HP Hewlett Packard Switch 2520G POE User Manual
HP ProCurve 2520G-PoE Switches  
Installation and Getting Started Guide  
Power over Ethernet  
Download from Www.Somanuals.com. All Manuals Search And Download.  
HP ProCurve 2520G-PoE Switches  
Installation and Getting Started Guide  
Download from Www.Somanuals.com. All Manuals Search And Download.  
© Copyright 2009 Hewlett-Packard Development  
Company, L.P.  
Disclaimer  
HEWLETT-PACKARD COMPANY MAKES NO WARRANTY  
OF ANY KIND WITH REGARD TO THIS MATERIAL,  
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED  
WARRANTIES OF MERCHANTABILITY AND FITNESS  
FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not  
be liable for errors contained herein or for incidental or  
consequential damages in connection with the furnishing,  
performance, or use of this material.  
Publication Number  
5992-4975  
The information contained herein is subject to change  
without notice. The only warranties for HP products and  
services are set forth in the express warranty statements  
accompanying such products and services. Nothing herein  
should be construed as constituting an additional warranty.  
HP shall not be liable for technical or editorial errors or  
omissions contained herein.  
October 2009  
Applicable Products  
HP ProCurve 2520G-8-PoE Switch  
HP ProCurve 2520G-24-PoE Switch  
(J9298A)  
(J9299A)  
Hewlett-Packard assumes no responsibility for the use or  
reliability of its software on equipment that is not furnished  
by Hewlett-Packard.  
Warranty  
See the Software License, Warranty and Support booklet  
included with the product.  
A copy of the specific warranty terms applicable to your  
Hewlett-Packard products and replacement parts can be  
obtained from your HP Sales and Service Office or  
authorized dealer.  
Safety  
Before installing and operating these products, please read  
the “Installation Precautions” in chapter 2, “Installing the  
Switch”, and the safety statements in appendix B, “Safety  
and EMC Regulatory Statements”.  
Hewlett-Packard Company  
8000 Foothills Boulevard, m/s 5551  
Roseville, California 95747-5551  
www.hp.com/go/procurve  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Contents  
1 Introducing the Switch  
Front of the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3  
Network Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3  
LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4  
Port LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6  
LED Mode Select Button and Indicator LEDs . . . . . . . . . . . . . . . . 1-7  
Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8  
Clear Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8  
Console Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8  
Back of the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9  
Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9  
Switch Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10  
Save Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11  
2 Installing the Switch  
Included Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
Installation Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3  
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4  
1. Prepare the Installation Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5  
2. Verify the Switch Passes Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6  
LED Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8  
3. Mount the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8  
Rack or Cabinet Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8  
Rack Mounting the Switch 2520G-24-PoE . . . . . . . . . . . . . . . . . . . 2-9  
Rack Mounting the Switch 2520G-8-PoE . . . . . . . . . . . . . . . . . . . 2-11  
Wall or Under-Table Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13  
Horizontal Surface Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14  
Using a Kensington Security Cable . . . . . . . . . . . . . . . . . . . . . . . . 2-15  
4. Connect the Switch to a Power Source . . . . . . . . . . . . . . . . . . . . . . 2-15  
5. Connect the Network Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17  
Using the RJ-45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17  
iii  
Download from Www.Somanuals.com. All Manuals Search And Download.  
6. Installing or Removing mini-GBICs . . . . . . . . . . . . . . . . . . . . . . . . . 2-18  
Installing the mini-GBICs: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18  
Removing the mini-GBICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19  
Connecting Cables to mini-GBICs . . . . . . . . . . . . . . . . . . . . . . . . . 2-19  
7. (Optional) Connect a Console to the Switch . . . . . . . . . . . . . . . . . . 2-20  
Terminal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20  
Direct Console Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21  
Sample Network Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22  
As a Desktop Switch Implementing PoE . . . . . . . . . . . . . . . . . . . . . . . 2-22  
As a Segment Switch Implementing PoE . . . . . . . . . . . . . . . . . . . . . . . 2-23  
Stacking the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25  
3 Configuring the Switch  
Recommended Minimal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1  
Using the Console Setup Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2  
Where to Go From Here . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3  
Using the IP Address for Remote Switch Management . . . . . . . . . . . . . . . . 3-5  
Starting a Telnet Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5  
Starting a Web Browser Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5  
4 Troubleshooting  
Basic Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
Diagnosing with the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4  
LED patterns for General Switch Troubleshooting . . . . . . . . . . . . . . . 4-4  
LED Patterns for PoE Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 4-8  
Proactive Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9  
Hardware Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10  
Testing the Switch by Resetting It . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10  
Checking the Switch LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10  
Checking Console Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10  
Testing Twisted-Pair Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11  
Testing Switch-to-Device Network Communications . . . . . . . . . . . . 4-11  
Testing End-to-End Network Communications . . . . . . . . . . . . . . . . . 4-11  
Restoring the Factory Default Configuration . . . . . . . . . . . . . . . . . . . . . . . 4-12  
Downloading New Switch Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13  
iv  
Download from Www.Somanuals.com. All Manuals Search And Download.  
HP Customer Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13  
Before Calling Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13  
A Specifications  
Switch Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1  
Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1  
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1  
Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1  
BTU Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2  
Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2  
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2  
Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3  
Cabling and Technology Information Specifications . . . . . . . . . . . . . . . . A-4  
Technology Distance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5  
Mode Conditioning Patch Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6  
Installing the Patch Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6  
Twisted-Pair Cable/Connector Pin-Outs . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8  
Straight-through Twisted-Pair Cable for  
10 Mbps or 100 Mbps Network Connections . . . . . . . . . . . . . . . . . . . A-10  
Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10  
Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10  
Crossover Twisted-Pair Cable for  
10 Mbps or 100 Mbps Network Connection . . . . . . . . . . . . . . . . . . . . A-11  
Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-11  
Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-11  
Straight-Through Twisted-Pair Cable for  
1000 Mbps Network Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12  
Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12  
Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-12  
B Safety and EMC Regulatory Statements  
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1  
EMC Regulatory Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8  
U.S.A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8  
Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8  
Australia/New Zealand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8  
v
Download from Www.Somanuals.com. All Manuals Search And Download.  
Japan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8  
Korea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9  
Taiwan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9  
European Community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10  
D Recycle Statements  
Waste Electrical and Electronic Equipment (WEEE) Statements . . . . . . D-1  
Index  
vi  
Download from Www.Somanuals.com. All Manuals Search And Download.  
1
Introducing the Switch  
TheHPProCurve2520G-PoESwitchesaremultiportswitchesthatcanbeused  
to build high-performance switched workgroup networks. These switches are  
store-and-forward devices that offer low latency for high-speed networking.  
The 2520G-PoE switches also support Power over Ethernet (PoE)  
technologies.  
HP ProCurve 2520G-8-PoE Switch (J9298A)  
HP ProCurve 2520G-24-PoE Switch (J9299A)  
Throughout this manual, these switches will be referred to as the Switch  
2520G-8-PoE and the Switch 2520G-24-PoE.  
■
■
■
The Switch 2520G-8-PoE has 8 auto-sensing 10/100/1000Base-T RJ-45  
ports with two Gigabit Uplink dual-personality ports (ports 9 and 10).  
The Switch 2520G-24-PoE has 24 auto-sensing 10/100/1000Base-T RJ-45  
ports, four of which are dual-personality ports (ports 21 through 24).  
Power-over-Ethernet or PoE power - Both 2520G-PoE switches  
support PoE technology, which allows IP telephones, wireless LAN  
Access Points and other appliances to receive power as well as data over  
existing LAN cabling, without needing to modify the existing Ethernet  
infrastructure. The Switch 2520G-24-PoE is designed with an internal PoE  
power supply capable of providing 195 watts of PoE power (67 watts on  
the Switch 2520G-8-PoE). Each Switch port can provide up to 15.4 watts  
(or 7.5 watts if all ports are used) of PoE power to connected devices. For  
further information regarding PoE power, see the PoE Planning and  
Implementation Guide, which is on the ProCurve Web site at  
www.hp.com/go/procurve/manuals.  
1-1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
       
Introducing the Switch  
Dual-personality ports use either the 10/100/1000Base-T RJ-45 connector, or a  
supported ProCurve mini-GBIC (Small Form Factor Pluggable (SFP)) for  
fiber-optic connection. By default, the RJ-45 connectors are enabled.  
These switches can be directly connected to computers, printers, and servers  
toprovide dedicated bandwidthto those devices, and youcanbuild a switched  
network infrastructure by connecting the switch to hubs, other switches, or  
routers. In addition, the 2520G-PoE switches offer full network management  
capabilities.  
Using ProCurve mini-GBICs, these products support optional network  
connectivity with the following speeds and technologies:  
Table 1-1. Optional Network Connectivity, Speeds and Technologies  
Transceiver Form-  
Factor and  
Connector  
Speed  
Technology  
Cabling1  
SFP ("mini-GBIC")  
Connector  
100-FX  
Fiber (multimode)  
LC  
LC  
LC  
LC  
LC  
LC  
100 Mbps  
100-BX  
1000-SX  
1000-LX  
1000-LH  
1000-BX  
Fiber (single mode)  
Fiber (multimode)  
Fiber (multimode or single mode)  
Fiber (single mode)  
1 Gbps  
Fiber (single mode)  
1 For supported transceivers, see www.hp.com/go/procurve/faqs. HP ProCurve Mini-  
GBICs and SFPs have links to a list of supported products (first question in the "General  
product information" category).  
For technical details of cabling and technologies see “Cabling and Technology Informa-  
tion Specifications” in the appendix A.  
1-2  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Introducing the Switch  
Front of the Switch  
Front of the Switch  
Power,  
Fault, and  
Locator  
LEDs  
Test and Status  
HP ProCurve 2520G-8-PoE Switch (J9298A)  
Switch port LEDs  
LEDs  
1
Console  
Port  
Reset and Clear  
buttons  
LED Mode select button  
and indicator LEDs  
Dual-personality ports  
10/100/1000Base-T RJ-45 ports  
2
(1000Base-T and mini-GBIC)  
Power, Fault,  
and Locator  
LEDs  
HP ProCurve 2520G-24-PoE Switch (J9299A)  
Switch port LEDs  
PoE, Fan and Test  
Status LEDs  
Dual-personality ports  
1
LED Mode select button  
and indicator LEDs  
Reset and Clear  
buttons  
10/100/1000Base-T RJ-45 ports  
Console  
Port  
2
(1000Base-T and Mini-GBIC)  
1
2
All 10/100/1000Base-T RJ-45 ports have the Auto-MDIX feature.  
Dual-personality ports, either RJ-45 10/100/1000Base-T ports or Mini-GBIC (SFP) slots.  
Network Ports  
■
8, or 24 auto-sensing 10/100/1000Base-T ports.  
All these ports have the “Auto-MDIX” feature, which means that you can  
use either straight-through or crossover twisted-pair cables to connect  
any network devices to the switch.  
■
Two, or four dual-personality ports for either 10/100/1000Base-T RJ-45  
uplinks, or mini-GBIC (SFP) slots for fiber uplinks.  
1-3  
Download from Www.Somanuals.com. All Manuals Search And Download.  
           
Introducing the Switch  
Front of the Switch  
LEDs  
On the 2520G-PoE switches, there are three groupings of LEDs:  
■
■
■
switch status LEDs (Table 1-2)  
port LEDs (Table 1-3)  
Port LED Mode indicator LEDs (near the selector button) (Table 1-4)  
Table 1-2. Switch Status LEDs  
Switch LEDs  
State  
On  
Meaning  
Power  
(green)  
The internal power supply is working properly.  
No power connection. The switch is NOT receiving power.  
The normal state; indicates there are no fault conditions on the switch.  
Off  
Fault  
(orange)  
Off  
2
Flashing  
A fault has occurred with a component on the switch. The Status LED for  
the component with the fault will flash simultaneously.  
On  
On briefly after the switch is powered on or reset, at the beginning of  
switch self test. If this LED is on for a prolonged time, the switch has  
encountered a fatal hardware failure, or has failed its self test. See  
chapter 4, “Troubleshooting” for more information.  
Locator  
(blue)  
On  
Flashing  
Off  
The Locator LED is used to locate a specific switch in an area full of  
switches. The LED can be set to be on solid or flash for a specified number  
of minutes (1-1440). The default is 30 minutes. Use the command  
“chassislocate”.  
PoE  
(green/orange)  
On green  
Flashing  
Normal operation. The switch is ready to supply PoE power  
One or more ports has experienced a fault condition for PoE delivery. The  
Fault LED will be flashing simultaneously. If it is a self test failure, the Test  
LED will be flashing simultaneously. When the switch is put in PoE LED  
Mode, the Mode LED for the port with the problem will also be flashing  
simultaneously.  
2
orange  
Flashing  
One or more ports has an alert condition for PoE delivery, for example, an  
oversubscription condition (not enough PoE power available). Only this  
LED will be flashing, the Fault LED is off. When the switch is put in PoE  
LED Mode, the Mode LEDs for the ports with the alert condition will also  
be flashing.  
1
orange  
Fan  
On green  
Flashing  
The cooling fan is operating normally.  
(green/orange)  
(Switch 2520G-  
24-PoE only)  
The cooling fan has failed. The switch Fault LED will be flashing  
simultaneously.  
2
orange  
1-4  
Download from Www.Somanuals.com. All Manuals Search And Download.  
             
Introducing the Switch  
Front of the Switch  
Switch LEDs  
State  
Off  
Meaning  
Test  
(green/orange)  
The normal operational state; the switch is not undergoing self test.  
On green  
The switch self test and initialization are in progress after the switch has  
been power cycled or reset. The switch is not operational until this LED  
goes off. The Test LED also comes on briefly when you “hot swap” a mini-  
GBIC into the switch; the mini-GBIC is tested when it is hot swapped.  
Flashing  
A component of the switch has failed its self test. The switch Fault LED,  
Test LED, and the failed component LED will flash simultaneously.  
2
orange  
1
The flashing behavior is an on/off cycle once every 0.8 seconds approximately, a fast flash.  
The flashing behavior is an on/off cycle once every 1.6 seconds approximately, a slow flash.  
2
1-5  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Introducing the Switch  
Front of the Switch  
Port LEDs  
The port LEDs provide information about the individual switch ports.  
Table 1-3. Port LEDs  
Switch LEDs  
State  
Meaning  
Port LEDs  
2
Link  
On  
The port is enabled and receiving a link indication from the connected  
device. In PoE mode, indicates that the port is configured to enable PoE  
power delivery to the connected device.  
(green)  
Off  
One of these condition exists:  
•
•
•
no active network cable is connected to the port  
the port is not receiving link beat or sufficient light  
the port has been disabled through the switch console, the Web  
browser interface, ProCurve Manager, or other network management  
tool.  
•
•
In PoE mode, indicates that the port is configured such that PoE power  
delivery is disabled.  
Save power mode is enabled.  
1
Flashing  
The port has failed self test. The switch Fault, and Self Test LEDs will flash  
simultaneously.  
2
Mode (green)  
Depending on the mode selected, displays the following:  
•
•
•
•
network activity information  
connection duplex mode  
connection speed information  
PoE power delivery status  
See “LED Mode Select Button and Indicator LEDs:” below for more information.  
Mini-GBIC LEDs  
2
Link  
Flashing  
green  
One of the following conditions exist:  
•
•
the mini-GBIC is not supported by the current software  
the mini-GBIC is not a genuine ProCurve Mini-GBIC and is not  
supported  
•
the mini-GBIC is an “A” version in a switch that requires a “B” version  
or later.  
2
Link and Mode  
(green)  
On for 2  
seconds  
Both the Link and Mode LED turn on solid for 2 seconds and then go to  
normal operation. This indicates the mini-GBIC has been recognized by  
the switch.  
1
The flashing behavior is an on/off cycle once every 1.6 seconds, approximately.  
These LEDs are turned off when Save Power mode is enabled. If Save Power mode is enabled and the  
2
LEDs are turned off, they can be turned on temporarily through the LED Mode button.  
1-6  
Download from Www.Somanuals.com. All Manuals Search And Download.  
       
Introducing the Switch  
Front of the Switch  
LED Mode Select Button and Indicator LEDs  
To optimize the amount of information that can be displayed for each of the  
switch ports in the limited space available, the 2520G-PoE switches use  
multiple-display LEDs for each port.  
Mode LED  
Link LED  
The 2520G-PoE switches, have two  
LEDs per port. The Link status is  
always shown by the Link LED. The  
operation of the Mode LED is  
controlled by the LED Mode select  
button, and the current setting is  
indicated by the LED Mode indicator  
LEDs near the button. Press the  
button to step from one view mode  
to the next. The default view is  
Activity (Act).  
LED Mode select button  
and indicator LEDs  
Table 1-4. Multiple-Display Port LEDs  
Switch LEDs  
Mode  
Act  
Meaning  
Port Mode  
indicator LEDs  
(4 green LEDs)  
Indicates the Port LEDs are displaying network activity information.  
Indicates the Port LEDs are lit for ports that are in full-duplex mode.  
FDx  
Spd  
Indicates the Port LEDs are displaying the connection speed at which each  
port is operating:  
•
•
•
if the Port LED is off, the port is operating at 10 Mbps.  
if the Port LED is flashing, the port is operating at 100 Mbps.  
if the Port LED is on continuously, the port is operating at 1000 Mbps.  
PoE  
Indicates the Port LEDs are lit for ports that are providing PoE power to the  
connected device.  
When Save Power mode is enabled and all port LEDs are off, press the LED  
Modeselectbuttontoturn theportLEDson.Pressthe LEDModeselectbutton  
again to step through each view mode. Press the LED Mode select button after  
the PoE view mode to turn LEDs off.  
If the port LEDs are left on when Save Power mode is enabled, they turn off  
automatically after 10 minutes.  
1-7  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Introducing the Switch  
Front of the Switch  
Reset Button  
This button is for:  
■
Resettingtheswitch-Whentheswitch ispoweredon. Thisaction clears  
any temporary error conditions that may have occurred and executes the  
switch self test.  
■
Restoring Factory Default Configuration - When pressed with the  
Clearbuttonina specific pattern,anyconfigurationchanges youmayhave  
made through the switch console, the Web browser interface, and SNMP  
management are removed, and the factory default configuration is  
restored to the switch. For the specific method to restore the factory  
default configuration, see “Restoring the Factory Default Configuration”  
on page 4-12 of this manual.  
Clear Button  
This button is used for:  
■
Deleting Passwords - When pressed by itself for at least one second, the  
button deletes any switch console access passwords that you may have  
configured. Use this feature if you have misplaced the password and need  
console access. This button is provided as a convenience, however if you  
areconcerned withthesecurityofthe switch configurationandoperation,  
you should make sure the switch is installed in a secure location. This  
button can be disabled by a CLI command.  
■
Restoring Factory Default Configuration - See Reset Button above.  
Console Port  
This port is used to connect a console to a 2520G-PoE Switch by using the  
RJ-45 to DB9 cable, supplied with the switch. This connection is described  
under “7. (Optional) Connect a Console to the Switch” on page 2-20 in  
chapter 2, “Installing the Switch.” The console can be a PC or workstation  
running a VT-100 terminal emulator, or a VT-100 terminal.  
1-8  
Download from Www.Somanuals.com. All Manuals Search And Download.  
               
Introducing the Switch  
Back of the Switch  
Back of the Switch  
HP ProCurve 2520G-8-PoE Switch (J9298A)  
DC power connector  
HP ProCurve 2520G-24-PoE Switch (J9299A)  
AC power connector  
Power Connector  
The Switch 2520G-24-PoE does not have a power switch; it is powered on  
when connected to an active AC power source. The switch automatically  
adjusts to any voltage between 100-127 and 200-240 volts and either 50 or  
60 Hz. There are no voltage range settings required.  
The Switch 2520G-8-PoE also does not have a power switch. It is powered on  
when the external AC/DC power adapter is connected to the switch and to a  
power source. The external AC/DC power adapter supplies 48 volts DC to the  
switch and automatically adjusts to any AC voltage between 100-240 volts and  
either 50 or 60 Hz. No voltage range settings are required.  
1-9  
Download from Www.Somanuals.com. All Manuals Search And Download.  
       
Introducing the Switch  
Switch Features  
Switch Features  
The features of the 2520G-PoE switches include:  
■
8, or 24 auto-sensing 10/100/1000Base-T RJ-45 ports with Auto-MDIX.  
■
Two, or four dual-personality uplink ports (1000Base-T RJ-45 or mini-  
GBIC).  
■
Power over Ethernet (PoE) operation—the switches are IEEE 802.3af  
compliant and provide up to 15.4W per port to power IP phones, wireless  
access points, Web cameras, and more. For more information, see the PoE  
Planning and Implementation Guide, which is on the ProCurve Web site  
at www.hp.com/go/procurve/manuals.  
■
■
The switches support some pre-standard PoE devices. However, the use  
of a cross-over cable may be required.  
Plug-and-play networking—all ports are enabled—just connect the  
network cables to active network devices and your switched network is  
operational.  
■
Auto-MDIX on all twisted-pair ports, meaning that all twisted-pair  
connectionscanbe made usingstraight-throughcables. Cross-over cables  
are not required, although they will also work.  
■
■
■
Automatic learning of the hardware addresses in each switch’s 8000-  
address forwarding table, (with configurable address aging value).  
Automatically negotiated full-duplex operation for the 10/100/1000 RJ-45  
ports when connected to other auto-negotiating devices.  
a “Save Power” mode option that keeps port LEDs turned off except for  
when the LED Mode select button is pressed.  
■
■
an automatic low-power mode for ports when a link is not present.  
Easy management of the switches through several available interfaces:  
•
console interface—a full featured, easy to use, VT-100 terminal  
interface that is especially good for out-of-band switch management  
or for Telnet access to the switch.  
•
•
Web browser interface—an easy to use built-in graphical interface  
that can be accessed from common Web browsers.  
ProCurve Manager—an SNMP-based, graphical network  
management tool that you can use to manage your entire network.  
■
■
Support for the Spanning Tree Protocol to eliminate network loops  
Support for up to 256 IEEE 802.1Q-compliant VLANs so you can divide  
the attached end nodes into logical groupings that fit your business needs.  
■
Download of new switch software for product enhancements or bug fixes.  
1-10  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Introducing the Switch  
Switch Features  
■
■
Variable speed fans ensure quiet operation on the Switch 2520G-24-PoE.  
Support for many advanced features to enhance network performance—  
for a description, see the Management and Configuration Guide, which  
isonthe ProCurve Website atwww.hp.com/go/procurve/manuals. (Youmay  
want to bookmark this Web page for easy access in the future.)  
Save Power Mode  
A Save Power mode feature can be configured through the console. Save  
Power mode can be used to turn off port LEDs unless the LED Mode button  
is pressed. In addition, it can configure the LAN ports to operate at low power  
if a link is not detected.  
1-11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Download from Www.Somanuals.com. All Manuals Search And Download.  
2
Installing the Switch  
This chapter provides installation information for the 2520G-PoE switches.  
Included Parts  
The 2520G-PoE switches have the following components:  
■
Documentation kit  
•
•
•
•
Read Me First  
Switch Quick Setup Guide  
Safety and Regulatory information  
Software License, Warranty, and Support information  
■
■
Console port serial cable (DB-9 to RJ-45)  
Accessory kits:  
Switch 2520G-24-PoE  
Switch 2520G-8-PoE  
Kit number 5069-6535  
Kit number 5070-6881  
Contains:  
Contains:  
1
•
•
two mounting brackets  
eight 8-mm M4 screws to attach the  
mounting brackets to the switch  
•
•
two mounting brackets  
four 8-mm M4 screws to attach the  
mounting brackets to the switch  
•
four 5/8-inch number 12-24 screws to  
attach the switch to a rack  
four rubber feet  
•
•
four rubber feet  
cable tie for power cord  
•
1
For wall mounting the Switch 2520G-8-PoE. For rack mounting, an optional bracket kit,  
5070-6570, is available. Visit www.hp.com/go/procurve-parts.  
2-1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
         
Installing the Switch  
Included Parts  
■
Switch 2520G-24-PoE AC power cords, one of the following:  
Australia/New Zealand  
8121-0833  
8120-8377  
8120-6802  
8120-6806  
8121-0772  
8120-6799  
8120-6804  
8120-6808  
8120-6807  
8121-0667  
8121-0964  
8120-8709  
8120-6805  
China  
Continental Europe  
Denmark  
India  
Israel  
Japan  
South Africa  
Switzerland  
Thailand  
Taiwan  
United Kingdom/Hong Kong/Singapore  
United States/Canada/Mexico  
■
Switch 2520G-8-PoE external AC/DC power adapters and power cords,  
one of the following:  
External AC/DC Power Adapter  
All countries/regions  
5070-6082  
Power Cords for AC/DC Power Adapter  
Australia  
8121-0838  
8121-0910  
8120-8861  
8120-8930  
8121-0564  
8121-1035  
8121-0875  
8120-8929  
8121-0908  
8121-0673  
8121-0909  
8121-0921  
China  
Continental Europe  
Denmark  
India  
Israel  
Japan  
South Africa  
Switzerland  
Thailand  
United Kingdom/Hong Kong/Singapore  
United States/Canada/Mexico  
J a p a n P o w e r  
C o r d Wa r n i n g  
2-2  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Installing the Switch  
Included Parts  
Installation Precautions  
WA R N I N G  
■
The rack or cabinet should be adequately secured to prevent it  
from becoming unstable and/or falling over.  
Devices installed in a rack or cabinet should be mounted as low as  
possible, with the heaviest devicesat thebottom and progressively  
lighter devices installed above.  
■
Wall-mount the Switch 2520G-8-PoE with network ports facing up  
(away from the floor). Do not wall-mount the switch with the  
network ports facing down (toward the floor) or ventilation ducts  
facing up or down.  
C a u t i o n s  
■
■
Use only the AC/DC power adapter supplied with the Switch 2520G-8-PoE  
for connection to an AC power source.  
Ensure the power source circuits are properly grounded, then use the  
power cord supplied with the switch to connect it to the power source.  
■
If your installation requires a different power cord than the one supplied  
with the switch, ensure the cord is adequately sized for the switch’s  
current requirements. In addition, be sure to use a power cord displaying  
the mark of the safety agency that defines the regulations for power cords  
in your country. The mark is your assurance that the power cord can be  
used safely with the switch. If the supplied power cord does not fit,  
contact ProCurve Networking support.  
■
■
When installing the switch, the AC outlet should be near the switch and  
should be easily accessible in case the switch must be powered off.  
Ensure the switch does not overload the power circuits, wiring, and over-  
current protection. To determine the possibility of overloading the supply  
circuits, add together the ampere ratings of all devices installed on the  
same circuit as the switch and compare the total with the rating limit for  
the circuit. Maximum ampere ratings are usually printed on the devices  
near the AC power connectors.  
■
■
Do not install the switch in an environment where the operating ambient  
temperature might exceed 50°C (122°F). This includes a fully-enclosed  
rack. Ensure the air flow around the sides and back of the switch is not  
restricted. Leave at least 7.6 cm (3 inches) for cooling.  
Ensure all port covers are installed when the port is not in use.  
2-3  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Installing the Switch  
Installation Procedures  
Installation Procedures  
These steps summarize your switch installation. The rest of this chapter  
provides details on these steps.  
1. Prepare the installation site (page 2-5). Make sure the physical  
environment into which you will be installing the switch is properly  
prepared, including having the correct network cabling ready to connect  
to the switch and having an appropriate location for the switch. See page  
2-3 for some installation precautions.  
2. Verify the switch passes self test (page 2-6). Plug the switch into a  
power source and observe that the LEDs on the switch’s front panel  
indicate correct switch operation.  
3. Mount the switch (page 2-8). The 2520G-PoE switches can be mounted  
in a 19-inch telco rack, in an equipment cabinet, on a wall, or on a  
horizontal surface.  
4. Connect power to the switch (page 2-15). Once the switch is mounted,  
plug it into the main power source.  
5. Connect the network devices (page 2-17). Using the appropriate  
network cables, connect the network devices to the switch ports.  
6. (Optional) Install mini-GBICs (page 2-18). The switch has two or four  
slotsforinstalling mini-GBICs.Depending onwhere youinstallthe switch,  
it may be easier to install the mini-GBICs first. Mini-GBICs can be hot  
swapped—they can be installed or removed while the switch is powered  
on.  
7. (Optional) Connect a console to the switch (page 2-20). You may  
wish to modify the switch’s configuration, for example, to configure an IP  
address so it can be managed using a Web browser, from an SNMP  
network management station, or through a Telnet session. Configuration  
changes can be made by using the included console cable to connect a PC  
to the switch’s console port.  
At this point, your switch is fully installed. See the rest of this chapter if you  
need more detailed information on any of these installation steps.  
2-4  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Installing the Switch  
Installation Procedures  
1. Prepare the Installation Site  
■
Cabling Infrastructure - Ensure the cabling infrastructure meets the  
necessary network specifications. See appendix A, “Cabling and  
Technology Information Specifications” for more information:  
■
Installation Location- Before installing the switch, plan its location and  
orientation relative to other devices and equipment:  
•
•
•
In the front of the switch, leave at least 7.6 cm (3 inches) of space for  
the twisted-pair and fiber-optic cabling.  
In the back of the switch, leave at least 3.8 cm (1 1/2 inches) of space  
for the power cord.  
On the sides of the switch, leave at least 7.6 cm (3 inches) for cooling.  
2-5  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Installing the Switch  
Installation Procedures  
2. Verify the Switch Passes Self Test  
Before mounting the switch in its network location, you should first verify it  
is working properly by plugging it into a power source and verifying it passes  
its self test.  
1. For the Switch 2520G-24-PoE, connect the power cord supplied with the  
switch to the power connector on the back of the switch, and then into a  
properly grounded electrical outlet.  
For the Switch 2520G-8-PoE, connect the AC/DC adapter’s power cord to  
the power connector on the back of the switch, and then plug the AC/DC  
power adapter into a nearby properly grounded electrical outlet.  
Switch 2520G-24-PoE  
Connectpowercordto  
the power connector  
Switch 2520G-8-PoE  
Connect AC/DC power adapter to the  
switch and an AC power outlet  
Figure 2-1. Connecting the power cord  
N o t e  
The Switch 2520G-24-PoE does not have a power switch. It is powered on  
when the power cord is connected to the switch and to a power source. For  
safety, the power outlet should be located near the switch installation.  
2-6  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Installing the Switch  
Installation Procedures  
The switch automatically adjusts to any voltage between 100-127 or 200-240  
volts and either 50 or 60 Hz. There are no voltage range settings required.  
The Switch 2520G-8-PoE also does not have a power switch. It is powered on  
when the external AC/DC power adapter is connected to the switch and the  
adapter power cord to a power source. The external AC/DC power adapter  
automatically adjusts to any voltage between 100-240 volts and either 50 or  
60 Hz.  
If your installation requires a different power cord than the one supplied with  
the switch, be sure the cord is adequately sized for the switch’s current  
requirements. In addition, be sure to use a power cord displaying the mark of  
the safety agency that defines the regulations for power cords in your country.  
The mark is your assurance that the power cord can be used safely with the  
switch. If the supplied power cord does not fit, contact ProCurve Networking  
support.  
C a u t i o n  
Use only the AC/DC power adapter and power cord (if applicable), supplied  
with the Switch 2520G-8-PoE. Use of other adapters or power cords, including  
those that came with other ProCurve Networking products, may result in  
damage to the equipment.  
2. Check the LEDs on the switch as described below.  
Power, Fault, and  
Switch port LEDs  
Locator LEDs  
Self Test LED  
Figure 2-2. Checking the LEDs  
When the switch is powered on, it performs its diagnostic self test. Self test  
takes approximately 50 seconds to complete.  
2-7  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Installing the Switch  
Installation Procedures  
LED Behavior  
During the self test:  
•
Initially, all the switch and port LEDs are on. Most of the LEDs go off  
and then may come on again during phases of the self test.  
•
For the duration of the self test, the Test LED stays on.  
When the self test completes successfully:  
•
The Power, PoE and Fan (Switch 2520G-24-PoE only) LEDs remain on.  
The Fault, Locator and Test LEDs stay off.  
•
•
•
The Act LED remains on indicating the default port LED mode.  
The port LEDs on the front of the switch go into their normal opera-  
tional mode:  
–
If the ports are connected to active network devices, the Link  
LEDs stay on and the Mode LEDs behave according to the mode  
selected. In the default mode (Act), the Mode LEDs should be  
blinking indicating port activity.  
–
If the ports are not connected to active network devices, the Link  
and Mode LEDs will stay off.  
If the LED display is different than what is described above, especially if  
the Fault and Test LEDs stay on for more than 60 seconds or they start  
flashing, the self test has not completed correctly. Refer to chapter 4,  
“Troubleshooting” for diagnostic help.  
3. Mount the Switch  
After the switch passes self test, it is ready to be mounted in a stable location.  
The switch can be mounted in these ways:  
■
■
■
in a rack or cabinet  
on a horizontal surface  
on a wall  
Rack or Cabinet Mounting  
The Switch 2520G-24-PoE is designed to be mounted in any EIA-standard 19-  
inch telco rack or communication equipment cabinet. The Switch 2520G-8-  
PoE can also be rack mounted using the optional bracket kit, 5070-6570 (not  
included).  
Note that the mounting brackets have multiple mounting holes and can be  
rotated allowing for a wide variety of mounting options. Secure the rack in  
accordance with the manufacture’s safety guidelines.  
2-8  
Download from Www.Somanuals.com. All Manuals Search And Download.  
                 
Installing the Switch  
Installation Procedures  
WA R N I N G  
For safe operation, please read the mounting precautions on  
page 2-3, before mounting a switch.  
E q u i p m e n t  
C a b i n e t  
N o t e  
The 12-24 screws supplied with the switch are the correct threading for  
standard EIA/TIA open 19-inch racks. If installing the switch in an equipment  
cabinet such as a server cabinet, use the clips and screws that came with the  
cabinet in place of the 12-24 screws that are supplied with the switch.  
Rack Mounting the Switch 2520G-24-PoE  
1. Use a #1 Phillips (cross-head) screwdriver and attach the mounting  
brackets to the switch with the included 8-mm M4 screws.  
Figure 2-3. Attaching mounting brackets  
WA R N I N G  
N o t e  
For safe reliable installation, only use the screws provided in the  
accessory kit to attach the mounting brackets to the switch.  
The mounting brackets have multiple mounting holes and can be rotated  
allowing for a wide variety of mounting options. These include mounting the  
switch so that its front face is flush with the face of the rack, or mounting it  
in a more balanced position.  
2-9  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Installing the Switch  
Installation Procedures  
2. Hold the switch with attached brackets up to the rack and move it  
vertically until rack holes line up with the bracket holes, then insert and  
tighten the four number 12-24 screws holding the brackets to the rack.  
Install 12-24  
screws  
Figure 2-4. Mounting in a rack  
2-10  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Installing the Switch  
Installation Procedures  
Rack Mounting the Switch 2520G-8-PoE  
N o t e  
Requires optional mounting bracket kit (not included).  
1. Use a #1 Phillips (cross-head) screwdriver and attach the mounting  
brackets to the switch with the included 8-mm M4 screws.  
8 mm  
M4 screws  
Figure 2-5. Attaching mounting brackets  
N o t e  
The mounting brackets have multiple mounting holes and can be rotated  
allowing for a wide variety of mounting options. These include mounting the  
switch so that its front face is flush with the face of the rack, or mounting it  
in a more balanced position.  
WA R N I N G  
For safe reliable installation, only use the screws provided in the  
accessory kit to attach the mounting brackets to the switch.  
2-11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Installing the Switch  
Installation Procedures  
2. Hold the switch with attached brackets up to the rack and move it  
vertically until rack holes line up with the bracket holes, then insert and  
tighten the four number 12-24 screws holding the brackets to the rack.  
Install 12-24  
screws  
Figure 2-6. Mounting in a rack  
2-12  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Installing the Switch  
Installation Procedures  
Wall or Under-Table Mounting  
You can mount the switch on a wall with either the front or rear panel facing  
up.  
WA R N I N G  
C a u t i o n  
For safe operation, do not install the switch with side ventilation or  
fan ducts facing up or down.  
For the Switch 2520G-8-PoE, the network ports must be facing up. Do  
not mount the switch with ports facing down.  
The switch should be mounted only to a wall or wood surface that is at least  
1/2-inch (12.7 mm) plywood or its equivalent.  
1. Use a #1 Phillips (cross-head) screwdriver and attach the mounting  
brackets to the switch with the included 8-mm M4 screws.  
2. Attach the switch to the wall or wood surface with two 5/8-inch number  
12 wood screws (not included).  
RJ-45 Ports  
Wall  
5/8-inch  
wood screws  
Figure 2-7. Wall Mounting the Switch 2520G-24-PoE  
2-13  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Installing the Switch  
Installation Procedures  
RJ-45 Ports  
Wall  
5/8-inch  
wood screws  
Figure 2-8. Wall Mounting the Switch 2520G-8-PoE  
Horizontal Surface Mounting  
Place the switch on a table or other horizontal surface. The switch comes with  
rubber feet in the accessory kit that can be used to help keep the switch from  
sliding on the surface.  
Attach the rubber feet to the four corners on the bottom of the switch within  
the embossed angled lines. Use a sturdy surface in an uncluttered area. You  
may want to secure the networking cables and switch power cord to the table  
leg or other part of the surface structure to help prevent tripping over the  
cords.  
C a u t i o n  
Ensure the air flow is not restricted around the sides and back of the switch.  
2-14  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Installing the Switch  
Installation Procedures  
Figure 2-9. Horizontal Surface Mounting  
Using a Kensington Security Cable  
To prevent unauthorized removal of the Switch 2520G-8-PoE, you can use a  
Kensington Slim MicroSaver security cable (not included) to attach the switch  
to an immovable object.  
Figure 2-10. Using a Security Cable  
4. Connect the Switch to a Power Source  
1. For the Switch 2520G-24-PoE, plug the included power cord into the  
switch’s power connector and into a nearby AC power source.  
For the Switch 2520G-8-PoE, plug the AC/DC adapter’s power cord into  
the switch, and then plug the AC/DC power adapter into a nearby AC  
power source.  
2-15  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Installing the Switch  
Installation Procedures  
2. Re-check the LEDs during self test. See “LED Behavior” on page 2-8.  
Figure 2-11. Connecting the power cord on the Switch 2520G-24-PoE  
3. For the Switch 2520G-8-PoE, use the included cable tie to secure the  
power cord to the switch.  
cable tie  
Figure 2-12. Securing the power cord on the Switch 2520G-8-PoE  
2-16  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Installing the Switch  
Installation Procedures  
5. Connect the Network Cables  
Connect the network cables, described under “Cabling Infrastructure” (page  
2-5), from the network devices or your patch panels to the fixed RJ-45 ports  
on the switch or to any mini-GBICs you have installed in the switch.  
Using the RJ-45 Connectors  
To connect:  
Push the RJ-45 plug into the RJ-45  
port until the tab on the plug clicks  
into place. When power is on for the  
switchandfortheconnecteddevice,  
the Link LED for the port should  
lighttoconfirmapowered-ondevice  
(for example, an end node) is at the  
other end of the cable.  
RJ-45 connector  
If the Link LED does not go on when  
the network cable is connected to  
the port, see “Diagnosing with the  
LEDs” in chapter 4,  
Unshielded twisted-pair cable:  
• Category 3, 4, or 5 for 10 Mbps ports  
• Category 5 or better for 100 Mbps ports  
• Category 5e or better for 1000 Mbps ports  
“Troubleshooting”.  
Maximum distance: 100 meters  
To disconnect:  
Press the small tab on the plug and  
pull the plug out of the port.  
Figure 2-13. Connecting network cables  
2-17  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Installing the Switch  
Installation Procedures  
6. Installing or Removing mini-GBICs  
You can install or remove a mini-GBIC from a mini-GBIC slot without having  
to power off the switch. Use only HP ProCurve mini-GBICs.  
C a u t i o n  
N o t e s  
Hot swapping transceivers is supported. You can install or remove a  
transceiver with the switch powered on, a reset will not occur. However, rapid  
hotswaps are not recommended. Wait a few seconds for the Mode LED to turn  
on (during initialization), and then turn off.  
■
■
The mini-GBIC slots areshared with10/100/1000Base-T RJ-45 ports. When  
a mini-GBIC is installed in a slot, the associated RJ-45 port is disabled and  
cannot be used.  
Ensure the network cable is NOT connected when you install or remove  
a mini-GBIC.  
C a u t i o n  
Use only supported genuine HP ProCurve mini-GBICs with your switch. Non-  
ProCurve mini-GBICs are not supported, and their use may result in product  
malfunction. Should you require additional HP ProCurve mini-GBICs, contact  
your ProCurve Networking Sales and Service Office or authorized dealer.  
Installing the mini-GBICs:  
Remove the protective plastic cover and retain it for later use. Hold the mini-  
GBIC by its sides and gently insert it into either of the slots on the switch until  
the mini-GBIC clicks into place.  
WA R N I N G  
The HP ProCurve mini-GBICs are Class 1 laser devices. Avoid direct  
eye exposure to the beam coming from the transmit port.  
2-18  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Installing the Switch  
Installation Procedures  
Figure 2-14. Installing a mini-GBIC (SFP)  
Removing the mini-GBICs  
N o t e  
Youshoulddisconnectthe networkcablefromthemini-GBICbeforeremoving  
it from the switch.  
Depending on when you purchased your ProCurve mini-GBIC, it may have  
either of three different release mechanisms: a plastic tab on the bottom of  
the mini-GBIC, a plastic collar around the mini-GBIC, or a wire bail.  
To remove the mini-GBICs that have the plastic tab or plastic collar, push the  
tab or collar toward the switch until you see the mini-GBIC release from the  
switch (you can see it move outward slightly), and then pull it from the slot.  
To remove the mini-GBICs that have the wire bail, lower the bail until it is  
approximately horizontal, and then using the bail, pull the mini-GBIC from the  
slot.  
Replace the protective plastic cover on the mini-GBIC.  
Connecting Cables to mini-GBICs  
If you have any mini-GBICs installed in the switch, the type of network  
connections you will need to use depends on the type of mini-GBICs you have  
installed. See the table on page 1-2, and appendix A, “Specifications”, for the  
mini-GBIC cabling information.  
2-19  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Installing the Switch  
Installation Procedures  
For mini-GBIC ports, and in general for all the switch ports, when a network  
cable from an active network device is connected to the port, the port LED  
for that port should go on. If the port LED does not go on when the network  
cable is connected to the port, see “Diagnosing with the LEDs” in chapter 4,  
“Troubleshooting”.  
7. (Optional) Connect a Console to the Switch  
The 2520G-PoE switches have a full-featured, easy to use console interface  
for performing switch management tasks including the following:  
■
monitor switch and port status and observe network activity statistics  
■
modify the switch’s configuration to optimize switch performance,  
enhance network traffic control, and improve network security  
■
■
■
read the event log and access diagnostic tools to help in troubleshooting  
download new software to the switch  
add passwords to control access to the switch from the console, Web  
browser interface, and network management stations  
The console can be accessed through these methods:  
■
Out-of-band: The 2520G-PoE switches come with a serial cable for  
connecting a PC or VT-100 terminal, to be used as a console, directly to  
the switch.  
■
In-Band: Access the console using Telnet from a PC or UNIX station on  
the network, and a VT-100 terminal emulator. This method requires that  
you first configure the switch with an IP addressand subnet maskby using  
either out-of-band console access or through DHCP/Bootp. For more  
information on IP addressing and on starting a Telnet session, see  
chapter 3, “Configuring the Switch”, in the Management and  
Configuration Guide, which is on the ProCurve Web site at www.hp.com/  
go/procurve/manuals.  
The 2520G-PoE switches can simultaneously support one out-of-band console  
session through the Console Port and in-band Telnet console sessions.  
Terminal Configuration  
To connect a console to the switch, configure the PC terminal emulator as a  
DEC VT-100 (ANSI) terminal or use a VT-100 terminal, and configure either  
one to operate with these settings:  
■
■
■
any baud rate from 1200 to 115200 (the switch senses the speed)  
8 data bits, 1 stop bit, no parity, and flow control set to Xon/Xoff  
for the Windows Terminal program, also disable (uncheck) the “Use  
Function, Arrow, and Ctrl Keys for Windows” option  
2-20  
Download from Www.Somanuals.com. All Manuals Search And Download.  
               
Installing the Switch  
Installation Procedures  
■
for the Hilgraeve HyperTerminal program, select the “Terminal keys”  
option for the “Function, arrow, and ctrl keys act as” parameter  
If you want to operate the console using a different configuration, make sure  
you change the settings on both the terminal and on the switch so they are  
compatible. Change the switch settings first, then change the terminal  
settings, then reboot the switch and reestablish the console session.  
Direct Console Access  
To connect a console to the  
switch, follow these steps:  
Console port  
1. Connect the PC or terminal  
totheswitch’sConsolePort  
using the console cable  
included with the switch.  
(If your PC or terminal has  
Console cable supplied  
a 25-pin serial connector,  
first attach a 9-pin to 25-pin  
straight-through adapter at  
one end of the console  
cable.)  
with the switch  
Connect to a PC  
running a terminal  
emulator program, or  
a VT-100 terminal  
2. TurnontheterminalorPC’s  
power and, if using a PC,  
start the PC terminal  
program.  
Figure 2-15. Connecting the console cable  
3. Press [Enter] two or three times and you will see the copyright page and  
the message “Press any key to continue”. Press a key, and you will then  
see the switch console command (CLI) prompt, for example:  
ProCurve_2520G-24-PoE#  
If you want to continue with console management of the switch at this time,  
see chapter 3, “Getting Started With Switch Configuration” for some basic  
configuration steps. For more detailed information, refer to the Management  
and Configuration Guide, which is on the ProCurve Web site at www.hp.com/  
go/procurve/manuals.  
2-21  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Installing the Switch  
Sample Network Topologies  
Sample Network Topologies  
This section shows a few sample network topologies for implementing the  
2520G-PoE switches. For more topology information, see the ProCurve  
networking products Web site, www.hp.com/go/procurve.  
As a Desktop Switch Implementing PoE  
Server with  
Gigabit  
Ethernet NIC  
Category 5e twisted-pair  
straight-through or  
crossover cable for 1000  
Mbps connection to server  
Switch 2520G-24-PoE  
Twisted-pair  
straight-through  
or crossover  
cables  
Figure 2-16. Basic desktop configuration  
The2520G-PoE switchesaredesignedto be usedasdesktopswitchestowhich  
end nodes, printers and other peripherals, and servers are directly connected,  
as shown in the above illustration. The switches can also supply PoE power  
to end devices such as IP telephones.  
2-22  
Download from Www.Somanuals.com. All Manuals Search And Download.  
       
Installing the Switch  
Sample Network Topologies  
As shown in the above illustration, the IP telephones can be connected in line,  
that is, between the switch and the end device, in this case a PC. The IP  
telephones have two ports, one in and one out. Therefore the phone receives  
voice andpower fromthe switch andthe PC can send and receive data through  
the phone to the switch.  
The end node devices are connected to the switch by straight-through or  
crossover twisted-pair cables. Either cable type can be used because of the  
Auto-MDIX feature on the 2520G-PoE switches.  
As a Segment Switch Implementing PoE  
Server  
Gigabit  
fiber-optic cable  
uplink  
Switch 2510G-24  
Gigabit  
fiber-optic cable  
uplink  
Switch 2520G-8-PoE  
Switch 2520G-24-PoE  
Twisted-pair straight-  
through or crossover cables  
Figure 2-17. Segment network configuration with PoE switches  
2-23  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
Installing the Switch  
Sample Network Topologies  
The 2520G-PoE switches also work well as segment switches. That is, with  
their high performance, they can be used for interconnecting network  
segments—simply connect the network devices that form those segments to  
the 2520G-PoE switches.  
In the illustration above, 2520G-PoE switches with PCs, printers, and local  
servers attached, are both connected to a non-PoE switch. The devices  
attached to the two 2520G-PoE switches can now communicate with each  
other through the non-PoE switch. They can also all communicate with the  
server that is connected to a 1000Base-T port on the Switch 2520G-24-PoE.  
As shown in the illustration above, the IP telephones have been inserted in  
between the Switch 2520G-24-PoE and the PCs, and wireless access points  
(WAPs) have been connected to the Switch 2520G-24-PoE and a Switch 2520G-  
8-PoE. Both the telephones and WAPs will receive PoE power from each of  
the switches. Only devices directly connected to PoE switches can receive  
PoE power. Devices connected to the non-PoE switch cannot receive PoE  
power.  
Because the 2520G-PoE switches have the Auto-MDIX feature, the  
connections between the switches and end nodes or servers can be through  
category 5 straight-through or crossover twisted-pair cable. Category 3 or 4  
cable can also be used if the connection is 10 Mbps only. In all cases, the device  
ports must be configured to auto negotiate the link characteristics for this  
feature to work.  
The connections between the switches are through fiber-optic cabling  
connected to Gigabit transceivers. All the devices on these network segments  
can access other network resources that are connected elsewhere on the  
network. Always remember when connecting fiber-optics that all components  
match in specification.  
2-24  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Installing the Switch  
Sample Network Topologies  
Stacking the Switch  
The 2520G-PoE switches can be connected together, through standard  
network connections, and managed through a single IP address. Up to 16  
switches can be connected together in such a “virtual stack”.  
You identify a 2520G-PoE Switch as the “Commander” and give that switch an  
IP address. Up to 15 other switches in the network can then easily be  
configured as Members of the stack and managed through the Commander’s  
IP address. The management includes Telnet access and Web browser  
interface access to the Commander and to each Member switch through the  
Commander.  
For more information on stacking your switch, see the Management and  
Configuration Guide, which is on the ProCurve Web site at www.hp.com/go/  
procurve/manuals.  
2-25  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Download from Www.Somanuals.com. All Manuals Search And Download.  
3
Configuring the Switch  
This chapter is a guide for using the console Switch Setup screen to quickly  
assign an IP (Internet Protocol) address and subnet mask to the switch, set a  
Manager password, and, optionally, configure other basic features.  
For more information on using the switch console and the Web browser  
interface, please see the Management and Configuration Guide, which is on  
the ProCurve Web site at www.hp.com/go/procurve/manuals.  
Recommended Minimal Configuration  
In the factory default configuration, the switch has no IP (Internet Protocol)  
address and subnet mask, and no passwords. In this state, it can be managed  
only through a direct console connection. To manage the switch through in-  
band (networked) access, you should configure the switch with an IP address  
and subnet mask compatible with your network. Also, you should configure  
a Manager password to control access privileges from the console and Web  
browser interface. Other parameters in the Switch Setup screen can be left at  
their default settings or you can configure them with values you enter.  
Many other features can be configured through the switch’s console interface,  
to optimize the switch’s performance, to enhance your control of the network  
traffic, and to improve network security. Once an IP address has been  
configured on the switch, these features can be accessed more conveniently  
through a remote Telnet session, through the switch’s Web browser interface,  
and from an SNMP network management station running a network  
management program. For a listing of switch features available with and  
without an IP address, refer to “How IP Addressing Affects Switch Operation”  
in the Management and Configuration Guide.  
For more information on IP addressing, refer to “IP Configuration” in the  
Management and Configuration Guide.  
N o t e  
By default, the switch is configured to acquire an IP address configuration  
from a DHCP or Bootp server. To use DHCP/Bootp instead of the manual  
method described in this chapter, see “DHCP/Bootp Operation” in the  
Management and Configuration Guide.  
3-1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
           
Configuring the Switch  
Recommended Minimal Configuration  
Using the Console Setup Screen  
The quickest and easiest way to minimally configure the switch for  
management and password protection in your network is to use a direct  
console connection to the switch, start a console session, and access the  
Switch Setup screen.  
1. Using the method described in the preceding section, connect a terminal  
device to the switch and display the switch console command line  
interface (CLI) prompt (the default display).  
The CLI prompt appears, for example:  
ProCurve_2520G-24-PoE#  
2. At the prompt, enter the setup command to display the Switch Setup  
screen. The following illustration shows the Setup screen with the default  
settings.  
Figure 3-1. Example console setup screen  
3. Use the [Tab] key to select the Manager Password field and enter a manager  
password of up to 16 printable ASCII characters.  
4. [Tab] to the IP Config (DHCP/Bootp) field and use the Space bar to select the  
Manual option.  
5. [Tab] to the IP Address field and enter the IP address that is compatible with  
your network.  
6. [Tab] to the Subnet Mask field and enter the subnet mask used for your  
network.  
7. Press [Enter], then [S] (for Save).  
3-2  
Download from Www.Somanuals.com. All Manuals Search And Download.  
           
Configuring the Switch  
Recommended Minimal Configuration  
Here is some information on the fields in the Setup screen. For more  
information on these fields, see the Management and Configuration Guide:  
Parameter  
Default  
System Name  
System Contact  
Manager Password  
Logon Default  
blank  
blank  
blank  
CLI  
Optional; up to 25 characters, including spaces  
Optional; up to 48 characters, including spaces  
Recommended; up to 16 characters (no blank spaces)  
The default setting selects the command line interface for console access.  
The alternative is the menu interface.  
Time Zone  
0 (none)  
public  
Optional; 1440 to -1440. The number of minutes your location is to the West (-)  
or East (+) of GMT.  
Community Name  
Default setting recommended.  
Spanning Tree Enabled No  
Default setting recommended unless STP is already running on your network  
or the switch will be used in complex network topologies.  
Default Gateway  
Time Sync Method  
TimeP Mode  
blank  
Optional; Enter the IP address of the next-hop gateway node if network traffic  
needs to be able to reach off-subnet destinations.  
None  
Optional; The protocol the switch uses to acquire a time signal. The options  
are SNTP and TimeP.  
Disabled  
Optional; The method the switch uses to acquire the TimeP server address.  
IP Config (DHCP/Bootp) DHCP/Bootp  
Set to Manual unless a DHCP/Bootp server is used on your network to  
configure IP addressing.  
IP Address  
xxx.xxx.xxx.xxx Recommended; If you set IP Config to Manual, then enter an IP address  
compatible with your network.  
Note: The IP address and subnet mask assigned for the switch must be compatible with the IP addressing used in  
your network. For more information on IP addressing, see the Management and Configuration Guide.  
Subnet Mask  
xxx.xxx.xxx.xxx Recommended; If you entered an IP address, then enter a subnet mask  
compatible with your network.  
Where to Go From Here  
The above procedure configures your switch with a Manager password, IP  
address, and subnet mask. As a result, with the proper network connections,  
you can now manage the switch from a PC equipped with Telnet, and/or a Web  
browser interface.  
Some basic information on managing your switch is included in the next  
section. For more information on the console, Web browser, and SNMP  
management interfaces and all the features that can be configured on the  
2520G-PoE switches, see the Management and Configuration Guide.  
3-3  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Configuring the Switch  
Recommended Minimal Configuration  
To Recover from a Lost Manager Password: If you cannot start a  
console session at the manager level because of a lost Manager password, you  
can clear all passwords and user names by getting physical access to the  
switch and pressing and holding the Clear button for a full second.  
3-4  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Configuring the Switch  
Using the IP Address for Remote Switch Management  
Using the IP Address for Remote Switch  
Management  
With your switch, you can use the switch’s IP address to manage the switch  
from any PC that is on the same subnet as the switch. You can use either a  
Telnet session or a standard Web browser to manage the switch.  
Starting a Telnet Session  
To access the switch through a Telnet session, follow these steps:  
1. Make sure the switch is configured with an IP address and that the switch  
is reachable from the PC that is running the Telnet session (for example,  
by using a Ping command to the switch’s IP address).  
2. Start the Telnet program on a PC that is on the same subnet as the switch  
and connect to the switch’s IP address.  
3. You will see the copyright page and the message “Press any key to  
continue”. Press a key, and you will then see the switch console command  
(CLI) prompt, for example:  
ProCurve_2520G-24-PoE#  
Enter help or ? to see a list of commands that can be executed at the  
prompt. Entering any command followed by help provides more detailed  
context help information about the command. Entering any command  
followed by ? displays a list of options that are available at that point in  
the command entry.  
Starting a Web Browser Session  
The 2520G-PoE switches can be managed through a graphical interface that  
you can access from any PC or workstation on the network by running your  
Web browser and typing in the switch’s IP address as the URL. No additional  
software installation is required to make this interface available; it is included  
in the switch’s onboard software.  
For more information on using the Web browser interface, please see the  
Management and Configuration Guide.  
An extensive help system is also available for the Web browser interface. To  
access the Help system, access to the Internet is required. Otherwise, the Help  
files must be downloaded to a local management server.  
3-5  
Download from Www.Somanuals.com. All Manuals Search And Download.  
       
Download from Www.Somanuals.com. All Manuals Search And Download.  
4
Troubleshooting  
This chapter describes how to troubleshoot your ProCurve 2520G-PoE  
Switches. This document describes troubleshooting mostly from a hardware  
perspective. You can perform more in-depth troubleshooting on these devices  
using the software tools available with the switches, including the full-  
featured console interface, the built-in Web browser interface, and ProCurve  
Manager, the SNMP-based network management tool. For more information,  
see the chapter “Troubleshooting” in the Management and Configuration  
Guide, which is on the ProCurve Web site at www.hp.com/go/procurve/manuals.  
This chapter describes the following:  
■
■
■
■
■
■
■
basic troubleshooting tips (page 4-1)  
diagnosing with the LEDs (page 4-4)  
proactive networking tools (page 4-9)  
hardware diagnostic tests (page 4-10)  
restoring the factory default configuration (page 4-12)  
downloading new software to the 2520G-PoE switches (page 4-13)  
HP Customer Support Services (page 4-13)  
Basic Troubleshooting Tips  
Most problems are caused by the following situations. Check for these items  
first when starting your troubleshooting:  
■
Connecting to devices that have a fixed full-duplex configuration.  
The RJ-45 ports are configured as “Auto”. That is, when connecting to  
attached devices, the switch operates in one of two ways to determine the  
link speed and the communication mode (half duplex or full duplex):  
•
If the connected device is also configured to Auto, the switch will  
automatically negotiate both link speed and communication mode.  
•
If the connected device has a fixed configuration, for example 100  
Mbps, at half or full duplex, the switch will automatically sense the  
link speed, but will default to a communication mode of half duplex.  
4-1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
             
Troubleshooting  
Basic Troubleshooting Tips  
C a u t i o n  
Because the 2520G-PoE switches behave in this way (in compliance with  
the IEEE 802.3 standard), if a device connected to the switch has a fixed  
configuration at full duplex, the device will not connect correctly to the  
switch. The result will be high error rates and very inefficient communi-  
cations between the switch and the device.  
Ensure all devices connected to the 2520G-PoE switches are configured  
to auto negotiate, or are configured to connect at half duplex (all hubs are  
configured this way, for example).  
■
■
Faulty or loose cables. Look for loose or obviously faulty connections.  
If the cables appear to be OK, make sure the connections are snug. If that  
does not correct the problem, try a different cable.  
Non-standard cables. Non-standard and miswired cables may cause  
network collisions and other network problems, and can seriously impair  
network performance. Use a new correctly-wired cable or compare your  
cable to the cable in appendix A, “Cabling and Technology Information  
Specifications” for pinouts and correct cable wiring. A category 5 cable  
tester is a recommended tool for every 100Base-TX and 1000Base-T  
network installation.  
■
Improper Network Topologies. It is important to make sure you have  
a valid network topology. Common topology faults include excessive  
cablelengthandexcessive repeaterdelaysbetweenendnodes. Ifyouhave  
network problems after recent changes to the network, change back to  
the previous topology. If you no longer experience the problems, the new  
topology is probably at fault. Sample topologies are shown at the end of  
chapter 2 in this book, and some topology configuration guidelines can  
be found online at the ProCurve Web site, www.hp.com/go/procurve.  
In addition, you should make sure that your network topology contains  
no data path loops. Between any two end nodes, there should be only  
one active cabling path at any time. Data path loops will cause broadcast  
storms that will severely impact your network performance.  
For your Switch, if you wish to build redundant paths between important  
nodes in your network to provide some fault tolerance, you should enable  
Spanning Tree Protocol support on the switch. This ensures that only  
one of the redundant paths is active at any time, thus avoiding data path  
loops. Spanning Tree can be enabled through the switch console or the  
Web browser interface.  
The 2520G-PoE switches also support Trunking, which allows multiple  
network cables to be used for a single network connection without  
causing a data path loop. For more information on Spanning Tree and  
Trunking, see the Management and Configuration Guide, which is on  
the ProCurve Web site at www.hp.com/go/procurve/manuals.  
4-2  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Troubleshooting  
Basic Troubleshooting Tips  
■
Check the port configuration. A port on your switch may not be  
operating as you expect because it has been put into a “blocking” state by  
Spanning Tree, GVRP (automatic VLANs), or LACP (automatic trunking).  
(Note that the normal operation of the Spanning Tree, GVRP, and LACP  
features may put the port in a blocking state.) Or, the port just may have  
been configured as disabled through software.  
Use the switch console to determine the port’s configuration and verify  
that there is not an improper or undesired configuration of any of the  
switch features that may be affecting the port. For more information, see  
the Management and Configuration Guide.  
For more information on possible network problems and their solutions, refer  
to the technical note “Troubleshooting LAN Performance and Intermittent  
Connectivity Problems”, which can be found on the ProCurve Web site,  
www.hp.com/go/procurve, in the Reference Library section, A-Z Index.  
4-3  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Troubleshooting  
Diagnosing with the LEDs  
Diagnosing with the LEDs  
Table 4-1 shows LED patterns on the switch that indicate problem conditions  
for general switch operation troubleshooting.  
Table 4-2 shows LED patterns that indicate problem conditions for PoE  
troubleshooting.  
LED patterns for General Switch Troubleshooting  
1. Check in the table for the LED pattern you see on your switch.  
2. Refer to the corresponding diagnostic tip on the next few pages.  
Table 4-1. LED Error Indicators  
LED Pattern Indicating Problems  
Power  
Fault  
Test  
Fan  
Port Link LED  
Diagnostic  
Tips  
1
1
1
1
Off with  
power cord  
plugged in  
➊
1
1
1
1
1
On  
On  
On  
On  
On  
Prolonged On Prolonged On  
➋
➌
➍
➎
➏
2
2
Flashing  
Flashing  
Off  
2
2
Flashing  
Flashing  
2
2
2
1
Flashing  
Flashing  
Off  
Flashing  
1
1
Off  
Off  
Off with cable  
connected  
On  
Off  
On, but the port is not  
communicating  
➐
1
2
This LED is not important for the diagnosis.  
The flashing behavior is an on/off cycle once every 1.6 seconds, approximately.  
4-4  
Download from Www.Somanuals.com. All Manuals Search And Download.  
         
Troubleshooting  
Diagnosing with the LEDs  
Diagnostic Tips:  
Tip  
Problem  
Solution  
The switch is not  
plugged into an  
active AC power  
source, or the  
switch’s power  
supply may have  
failed.  
1. Verify the power cord is plugged into an active power source and to the switch. Make  
sure these connections are snug.  
2. Try power cycling the switch by unplugging and plugging the power cord back in.  
3. If the Power LED is still not on, verify the AC power source works by plugging another  
device into the outlet. Or try plugging the switch into a different outlet or try a different  
power cord.  
If the power source and power cord are OK and this condition persists, the switch power  
supply may have failed. Call your ProCurve Networking authorized network reseller, or  
use the electronic support services from HP to get assistance. See the Software License,  
Warranty and Support booklet for more information.  
➊
A switch  
Try power cycling the switch. If the fault indication reoccurs, the switch may have failed.  
Call your ProCurve Networking authorized network reseller, or use the electronic support  
➋
➌
hardware failure  
has occurred. All services from HP to get assistance. See the Software License, Warranty and Support  
theLEDswillstay booklet for more information.  
on indefinitely.  
The switch has  
experienced a  
software failure  
during self test.  
1. Try resetting the switch by pressing the Reset button on the front of the switch, or by  
power cycling the switch.  
2. If the fault indication reoccurs, attach a console to the switch (as indicated in  
chapter 2) and configure it to operate at 9600 baud. Then, reset the switch. Messages  
should appear on the console screen and in the console log identifying the error  
condition. You can view the console log at that point by selecting it from the console  
Main Menu or by typing “Show log” at the Manager command prompt (#).  
If necessary to resolve the problem, contact your ProCurve Networking authorized  
network reseller, or use the electronic support services from HP to get assistance. See  
the Software License, Warranty and Support booklet for more information.  
One of the switch Try disconnecting power from the switch and wait a few moments. Then reconnect the  
➍
➎
cooling fans may  
have failed.  
(2520G-24-PoE  
Switch only)  
power to the switch and check the LEDs again. If the error indication reoccurs, one of the  
fans has failed. In switches with multiple fans the switch may continue to operate under  
this condition if the ambient temperature does not exceed normal room temperature, but  
for best operation, the switch should be replaced. Contact your ProCurve Networking  
authorized network reseller, or use the electronic support services from HP to get  
assistance. See the Software License, Warranty and Support booklet for more information.  
The network port Try power cycling the switch. If the fault indication reoccurs, the switch port may have  
forwhichtheLED failed. Call your ProCurve Networking authorized network reseller, or use the electronic  
is flashing has  
experienced a  
self test or  
initialization  
failure.  
support services from HP to get assistance. See the Software License, Warranty and  
Support booklet for more information.  
If the port is a mini-GBIC, verify that it is one of the mini-GBICs supported by the switch.  
Unsupported mini-GBICs will be identified with this fault condition. The supported  
mini-GBICs are listed in Chapter 2, “Installing the Switch” on page 2-18. The  
mini-GBICs are also tested when they are “hot-swapped”—installed or changed while  
the switch is powered on.  
To verify the port has failed, remove and reinstall the mini-GBIC without powering off the  
switch. If the port fault indication reoccurs, you will have to replace the mini-GBIC. Check  
the event log to see why the mini-GBIC failed.  
continued on the next page  
4-5  
Download from Www.Somanuals.com. All Manuals Search And Download.  
         
Troubleshooting  
Diagnosing with the LEDs  
Tip  
Problem  
Solution  
The network  
connection is not  
working  
Try the following procedures:  
➏
•
For the indicated port, verify that both ends of the cabling, at the switch and the  
connected device, are connected properly.  
properly.  
•
•
Verify the connected device and switch are both powered on and operating correctly.  
Verify you have used the correct cable type for the connection:  
–
For twisted-pair connections to the fixed 10/100 or 10/100/1000 ports, if the port is  
configured to “Auto” (auto negotiate), either straight-through or crossover cables  
can be used because of the switch’s “Auto-MDIX” feature and the Auto MDI/MDI-  
X feature of the 10/100/1000-T port.  
Note: If the switch port configuration is changed to one of the fixed configuration  
options (for example, 100 Mbps/Full Duplex), then the port operates as MDI-X only  
and you must use the correct type of cable for the connection. In general, for  
connecting an end node (MDI port) to the switch, use straight-through cable; for  
connecting to MDI-X ports on hubs, other switches, and routers, use crossover  
cable.  
–
For fiber-optic connections, verify the transmit port on the switch is connected to  
the receive port on the connected device, and the switch receive port is connected  
to the transmit port on the connected device.  
•
•
For the dual-personality 10/100/1000-T ports, be sure a mini-GBIC is not installed in the  
associated slot.  
For1000Base-Tconnections, verify thenetwork cablingcomplies withtheIEEE802.3ab  
standard. The cable should be installed according to the ANSI/TIA/EIA-568-A-5  
specifications. Cable testing should comply with the stated limitations for Attenuation,  
Near-End Crosstalk, Far-End Crosstalk, Equal-Level Far-End Crosstalk (ELFEXT),  
Multiple Disturber ELFEXT, and Return Loss.  
The cable verification process must include all patch cables from any end devices,  
including the switch, to any patch panels in the cabling path.  
•
•
Verify the port has not been disabled through a switch configuration change. You can  
use the console interface, or, if you have configured an IP address on the switch, use  
the Web browser interface to determine the state of the port and re-enable the port if  
necessary.  
Verify the switch port configuration matches the configuration of the attached device.  
For example, if the switch port is configured as “Auto”, the port on the attached device  
also MUST be configured as “Auto”. Depending on the port type, twisted-pair or fiber-  
optic, if the configurations don’t match, the results could be a very unreliable  
connection, or no link at all.  
•
Iftheotherproceduresdon’t resolvetheproblem, tryusingadifferentportoradifferent  
cable.  
4-6  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Troubleshooting  
Diagnosing with the LEDs  
Tip  
Problem  
Solution  
The port may be  
improperly  
Use the switch console to see if the port is part of a dynamic trunk (through the LACP  
feature) or to see if Spanning Tree is enabled on the switch, and to see if the port may  
have beenput intoa “blocking”statebythosefeatures. The showlacpcommanddisplays  
➐
configured, or  
theportmaybein the port status for the LACP feature; the show spanning-tree command displays the port  
a “blocking”  
state by the  
normaloperation  
of the Spanning  
Tree, LACP, or  
IGMP features.  
status for Spanning Tree.  
Also check the Port Status screen using the show interfaces command to see if the port  
has been configured as “disabled”.  
Other switch features that may affect the port operation include VLANs and IGMP. Use  
the switch console to see how the port is configured for these features.  
For software troubleshooting tips, see the chapter “Troubleshooting” in the Management  
and Configuration Guide, which is on the ProCurve Web site at www.hp.com/go/  
procurve/manuals.  
Ensure also, that the device at the other end of the connection is indicating a good link  
to the switch. If it is not, the problem may be with the cabling between the devices or the  
connectors on the cable.  
4-7  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Troubleshooting  
Diagnosing with the LEDs  
LED Patterns for PoE Troubleshooting  
If the PoE Status LED is flashing, that indicates a problem with the delivery  
of PoE power out one or more switch ports. Press the LED Mode button to  
put the switch into PoE mode and the port LEDs will show which ports are  
experiencing the problem. The following tables identify the specific problems  
that are shown by the LEDs.  
1. Check in the table for the LED pattern you see on your switch.  
2. Refer to the corresponding diagnostic tip.  
Table 4-2. LED Error Indicators  
LED Pattern Indicating Problems  
Fault  
PoE Status  
Port Link Port Mode  
Diagnostic  
Tips  
Off  
Fast Flash  
Orange  
Slow Flash  
Green  
Off  
Off  
➊
➋
Slow Flash  
Slow Flash Slow Flash  
Orange Green  
Diagnostic Tips:  
Tip  
Problem  
Solution  
PoE oversubscription  
condition. All available  
PoE power is already  
If possible add additional PoE power, or redefine port  
priorities.  
➊
taken by higher-priority  
ports.  
PoE hardware fault. A  
switch hardware  
component that is  
The switch must be replaced.  
➋
involved with PoE power  
delivery has failed.  
4-8  
Download from Www.Somanuals.com. All Manuals Search And Download.  
       
Troubleshooting  
Proactive Networking  
Proactive Networking  
TheProCurve2520G-PoESwitcheshave built-inmanagementcapabilitiesthat  
proactively help you manage your network including:  
■
finding and helping you fix the most common network error conditions  
(for example, faulty network cabling, and non-standard network  
topologies)  
■
■
informing you of the problem with clear, easy-to-understand messages  
recommending network configuration changes to enhance the  
performance of your network  
The following interfaces provide tests, indicators, and an event log that can  
be used to monitor the switch and its network connections and to help you  
take advantage of these proactive networking features:  
■
A graphical Web browser interface you can use to manage your switch  
from a PC running a supported Web browser, for example Microsoft  
Internet Explorer, and Netscape Communicator.  
■
Afull-featuredeasy-to-useconsoleinterfaceyoucanaccessbyconnecting  
a standard terminal or PC running a terminal emulator to the switch’s  
console port. The cable to make that connection is provided with your  
switch. The console interface is also accessible through a Telnet  
connection.  
For more information on using these software tools to diagnose and manage  
your switch, see the “Troubleshooting” chapter in the Management and  
Configuration Guide, which is on the ProCurve Web site at www.hp.com/go/  
procurve/manuals.  
4-9  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Troubleshooting  
Hardware Diagnostic Tests  
Hardware Diagnostic Tests  
Testing the Switch by Resetting It  
If you believe the switch is not operating correctly, you can reset the switch  
to test its circuitry and operating code. To reset a switch, either:  
■
unplug and plug in the power cord (power cycling)  
press the Reset button on the front of the switch  
■
Power cycling the switch and pressing the Reset button both cause the switch  
to perform its power-on self test. These reset processes also cause any  
network traffic counters to be reset to zero, and cause the System Up Time  
timer to reset to zero.  
Checking the Switch LEDs  
The self test passes if the Fault and Self Test LEDs on the front of the switch  
go off after approximately 50 seconds. If these LEDs stay on longer than 60  
seconds or begin flashing, there may be a problem with the switch.  
See “Diagnosing with the LEDs” on page 4-4 for information on interpreting  
the LED patterns.  
Checking Console Messages  
Useful diagnostic messages may be displayed on the console screen when the  
switch is reset. As described in chapter 2 under step 7, Connect a Console to  
the Switch connect a PC running a VT-100 terminal emulator program or a  
standard VT-100 terminal to the switch’s Console Port and configure it to run  
at 9600 baud, and with the other terminal communication settings shown on  
“Configuring the Switch”. Then, when you reset the switch, note the messages that  
are displayed. Additionally, you can check the switch event log, which can be  
accessed from the console using the show log command, or from the console  
Main Menu after entering the Menu command.  
4-10  
Download from Www.Somanuals.com. All Manuals Search And Download.  
               
Troubleshooting  
Hardware Diagnostic Tests  
Testing Twisted-Pair Cabling  
Network cables that fail to provide a link or provide an unreliable link between  
the switch and the connected network device may not be compatible with the  
IEEE 802.3 Type 10Base-T, 100Base-TX, or 1000Base-T standards. The twisted-  
pair cables attached to the switch must be compatible with the appropriate  
standards. To verify your cable is compatible with these standards, use a  
qualified cable test device.  
Testing Switch-to-Device Network Communications  
You can perform the following communication tests to verify the network is  
operating correctly between the switch and any connected device that can  
respond correctly to the communication test.  
■
Link Test—a physical layer test that sends IEEE 802.2 test packets to any  
device identified by its MAC address  
■
Ping Test—a network layer test used on IP networks that sends test  
packets to any device identified by its IP address  
These tests can be performed through the switch console interface from a  
terminal connected to the switch or through a Telnet connection, or from the  
switch’s Web browser interface. For more information, see the Management  
and Configuration Guide, which is on the ProCurve Web site at www.hp.com/  
go/procurve/manuals.  
Testing End-to-End Network Communications  
Both the switch and the cabling can be tested by running an end-to-end  
communications test—a test that sends known data from one network device  
to another through the switch. For example, if you have two PCs on the  
network that have LAN adapters between which you can run a link-level test  
or Ping test through the switch, you can use this test to verify that the entire  
communication path between the two PCs is functioning correctly. See your  
LAN adapter documentation for more information on running a link test or  
Ping test.  
4-11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
               
Troubleshooting  
Restoring the Factory Default Configuration  
Restoring the Factory Default  
Configuration  
As part of your troubleshooting process on the Switch, it may become  
necessary to return the switch configuration to the factory default settings.  
This clears any passwords, clears the console event log, resets the network  
counters to zero, performs a complete self test, and reboots the switch into  
its factory default configuration including deleting the IP address, if one is  
configured.  
N o t e  
This process removes all switch configuration changes that you have made  
from the factory default settings. This includes, for example, configuration of  
VLANs, Spanning Tree, trunks, and stacking. Returning the configuration of  
these features to their factory default settings (usually disabling them) may  
result in network connectivity issues.  
Ifthe switchhasa validconfiguration, andyou arerestoring the factory default  
settings for a reason other than configuration problems, you should save the  
switch configuration prior to performing the factory default reset. Then, after  
the reset and resolution of the original problem, you can restore the saved  
configuration to the switch. For both the save and restore processes, you can  
use the console copy command. For more information on this command, see  
the Management and Configuration Guide, which is on the ProCurve Web  
site at www.hp.com/go/procurve/manuals.  
You can restore the factory default configuration either on the switch itself,  
or through the switch console.  
To execute the factory default reset on the switch, perform these steps:  
1. Using pointed objects, simultaneously press both the Reset and Clear  
buttons on the front of the switch. The power and fault lights come on.  
2. Continue to press the Clear button while releasing the Reset button.  
3. When the Self Test LED begins to flash, release the Clear button.  
The switch will then complete its self test and begin operating with its  
configuration restored to the factory default settings.  
To restore the factory default configuration using the console, execute the  
erase startup-config command from the console command prompt.  
4-12  
Download from Www.Somanuals.com. All Manuals Search And Download.  
         
Troubleshooting  
Downloading New Switch Software  
Downloading New Switch Software  
When product enhancements occur for the 2520G-PoE switches, new  
software can be downloaded to the switch through several methods, for  
product enhancements and new features. For more information, see the  
Management and Configuration Guide.  
The new switch software would be available on the ProCurve Web site,  
www.hp.com/go/procurve/software.  
HP Customer Support Services  
Ifyouarestillhaving troublewithyourswitch,Hewlett-Packardofferssupport  
24 hours a day, seven days a week through the use of a number of automated  
electronic services. See the Software License, Warranty and Support booklet  
that came with your switch for information on how to use these services to  
get technical support. The ProCurve Web site, www.hp.com/go/procurve also  
provides up-to-date support information.  
Additionally, your HP-authorized network reseller can provide you with  
assistance, both with services that they offer and with services offered by HP.  
Before Calling Support  
Before calling your networking dealer or HP Support, to make the support  
process most efficient, you first should retrieve the following information:  
Information Item  
Information Location  
•
•
product identification, including mini-GBICs  
the front of the switch and on  
labels on the mini-GBICs  
details about the switch’s status including the  
software (OS) version, a copy of the switch  
configuration, a copy of the switch Event Log, and a  
copy of the switch status and counters information  
switch console: show tech  
command  
•
copy of your network topology map, including  
network addresses assigned to the relevant devices  
your network records  
4-13  
Download from Www.Somanuals.com. All Manuals Search And Download.  
       
Download from Www.Somanuals.com. All Manuals Search And Download.  
A
Specifications  
Switch Specifications  
Physical  
Width  
Depth  
Height  
Weight  
25.4 cm (10 in)  
16.5 cm (6.5 in)  
25.1 cm (9.88 in)  
4.4 cm (1.73 in)  
4.4 cm (1.73 in)  
0.91 kg (2.01 lbs)  
3.27 kg (7.21 lbs)  
2520G-8-PoE (J9298A)  
2520G-24-PoE (J9299A)  
44.3 cm (17.4 in)  
Electrical  
AC voltage  
Maximum current Frequency range  
2520G-8-PoE (J9298A)1  
2520G-24-PoE (J9299A)2  
100-240 volts  
1.5A  
3.3A  
50/60 Hz  
50/60 Hz  
100-127 volts  
200-240 volts  
1 Requires a connection to an external power adapter module 5070-6082.  
2 The switch automatically adjusts to any voltage between 100-127 or 200-240  
volts and either 50 or 60 Hz.  
Environmental  
Operating  
Non-Operating  
Temperature  
2520G-8-PoE  
0°C to 45°C (32°F to 113°F)  
0°C to 50°C (32°F to 122°F)  
-40°C to 70°C (-40°F to 158°F)  
-40°C to 70°C (-40°F to 158°F)  
2520G-24-PoE  
Relative humidity  
(non-condensing)  
15% to 95% at 40°C (104°F)  
15% to 95% at 65°C (149°F)  
Maximum altitude  
3.0 Km (10,000 ft)*  
4.57 Km (15,000 ft)  
* The operating maximum altitude should not exceed that of any accessory being connected  
to any 2520G-PoE Switch.  
A-1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
                   
Specifications  
Switch Specifications  
BTU Ratings  
1
Switch Model  
Combined BTU  
89  
2520G-8-PoE  
223  
2520G-24-PoE  
1
Includes switch and maximum number of PoE powered devices  
connected to the switch at 15.4 watts.  
Acoustics  
2520G-8-PoE (J9298A) No fans.  
2520G-24-PoE (J9299A)  
Geraeuschemission LpA=28.3 dB am fiktiven Arbeitsplatz nach DIN  
45635 T.19  
Noise Emission LpA=28.3 dB at virtual workspace according to DIN  
45635 T.19  
Safety  
Complies with:  
■
■
■
EN 60950-1:2001 + A11:2004  
IEC 60950-1:2001  
EN 60825-1:1994 +A1+A2 / IEC 60825-1:1993 +A2 Class 1  
A-2  
Download from Www.Somanuals.com. All Manuals Search And Download.  
           
Specifications  
Standards  
Standards  
Table A-1. Technology Standards and Safety Compliance  
Laser safety information  
Technology  
Compatible with these IEEE  
standards  
EN/IEC  
standard  
compliance  
SFP  
("mini-GBIC") Lasers  
10-T  
IEEE 802.3 10BASE-T,  
100-TX  
1000-T  
100-FX  
IEEE 802.3u 100BASE-TX,  
IEEE 802.3ab 1000BASE-T  
IEEE 802.3u 100BASE-FX  
EN/IEC 60825  
EN/IEC 60825  
EN/IEC 60825  
EN/IEC 60825  
EN/IEC 60825  
Class 1 Laser Product  
Laser Klasse 1  
100-BX  
IEEE 802.3ah 100BASE-BX10  
IEEE 802.3z 1000BASE-SX  
IEEE 802.3z 1000BASE-LX  
(not an IEEE standard)  
Class 1 Laser Product  
Laser Klasse 1  
1000-SX  
1000-LX  
1000-LH  
1000-BX  
Class 1 Laser Product  
Laser Klasse 1  
Class 1 Laser Product  
Laser Klasse 1  
Class 1 Laser Product  
Laser Klasse 1  
IEEE 802.3ah 1000BASE-BX10 EN/IEC 60825  
Class 1 Laser Product  
Laser Klasse 1  
A-3  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Specifications  
Cabling and Technology Information Specifications  
Cabling and Technology Information  
Specifications  
Table A-2. Cabling Specifications  
10 Mbps Operation  
Category 3, 4 or 5, 100-ohm unshielded twisted-pair (UTP) or  
shielded twisted-pair (STP) cable, complying with IEEE 802.3  
10BASE-T specifications.  
100 Mbps Operation  
1000 Mbps Operation  
Category 5, 100-ohm UTP or STP cable, complying with IEEE  
802.3u 100BASE-TX specifications.  
Twisted-pair copper  
Multimode fiber  
Category5, 100-ohm 4-pairUTP or STP cable, complying with IEEE  
802.3ab 1000BASE-T specifications—Category 5e or better is  
recommended. See Note on 1000BASE-T Cable Requirements  
below.  
62.5/125 μm or 50/125 μm (core/cladding) diameter, low metal  
content, graded index fiber-optic cables, complying with the  
ITU-T G.651 and ISO/IEC 793-2 Type A1b or A1a standards  
respectively.1  
9/125 μm (core/cladding) diameter, low metal content fiber-optic  
cables, complying with the ITU-T G.652 and  
ISO/IEC 793-2 Type B1 standards.  
Single mode fiber  
1
A mode conditioning patch cord may be needed for some Gigabit-LX installations.  
See “Mode Conditioning Patch Cord” on page A-6 for more information.  
Note on 1000BASE-T Cable Requirements. The Category 5 networking  
cables that work for 100BASE-TX connections should also work for  
1000BASE-T, as long as all four-pairs are connected. But, for the most robust  
connections, you should use cabling that complies with the Category 5e  
specifications, as described in Addendum 5 to the TIA-568-A standard (ANSI/  
TIA/EIA-568-A-5).  
Because ofthe increasedspeedprovided by 1000BASE-T (Gigabit-T), network  
cable quality is more important than for either 10BASE-T or 100BASE-TX.  
Cabling plants being used to carry 1000BASE-T networking must comply with  
the IEEE 802.3ab standards. In particular, the cabling must pass tests for  
Attenuation, Near-End Crosstalk (NEXT), and Far-End Crosstalk (FEXT).  
Additionally, unlike the cables for 100BASE-TX, the 1000BASE-T cables must  
pass tests for Equal-Level Far-End Crosstalk (ELFEXT) and Return Loss.  
When testing your cabling, be sure to include the patch cables that connect  
the switch and other end devices to the patch panels on your site. The patch  
cables are frequently overlooked when testing cable and they must also  
comply with the cabling standards.  
A-4  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Specifications  
Cabling and Technology Information Specifications  
Technology Distance Specifications  
Table A-3. Technology Distance Specifications  
Technology  
Supported cable type  
Multimode fiber  
modal bandwidth  
Supported distances  
100-FX  
100-BX  
1000-T  
1000-SX  
multimode fiber  
single mode fiber  
twisted-pair copper  
multimode fiber  
any  
up to 2,000 meters  
0.5 - 10,000 meters  
up to 100 meters  
2 - 220 meters  
N/A  
N/A  
160 MHz*km  
200 MHz*km  
400 MHz*km  
500 MHz*km  
400 MHz*km  
500 MHz*km  
N/A  
2 - 275 meters  
2 - 500 meters  
2 - 550 meters  
1000-LX  
multimode fiber  
2 - 550 meters  
2 - 550 meters  
single mode fiber  
single mode fiber  
single mode fiber  
2 - 10,000 meters  
10 - 70,000 meters1  
0.5 - 10,000 meters  
1000-LH  
1000-BX  
N/A  
N/A  
1 For distances less than 20km, a 10dB attenuator must be used. For distances between 20km and 40km, a 5dB attenuator  
must be used. Attenuators can be purchased from most cable vendors.  
A-5  
Download from Www.Somanuals.com. All Manuals Search And Download.  
       
Specifications  
Mode Conditioning Patch Cord  
Mode Conditioning Patch Cord  
The following information applies to installations in which multimode fiber-  
optic cables are connected to a Gigabit-LX port. Multimode cable has a design  
characteristic called “Differential Mode Delay”, which requires the  
transmission signals be “conditioned” to compensate for the cable design and  
thus prevent resulting transmission errors.  
Under certain circumstances, depending on the cable used and the lengths of  
the cable runs, an external Mode Conditioning Patch Cord may need to be  
installed between the Gigabit-LX and the multimode network cable to provide  
the transmission conditioning. If you experience a high number of  
transmission errors on those ports, usually CRC or FCS errors, you may need  
to install one of these patch cords between the fiber-optic port in your switch  
and your multimode fiber-optic network cabling, at both ends of the network  
link.  
The patch cord consists of a short length of single mode fiber cable coupled  
to graded-index multimode fiber cable on the transmit side, and only  
multimode cable on the receive side. The section of single mode fiber is  
connected in such a way that it minimizes the effects of the differential mode  
delay in the multimode cable.  
N o t e  
Most of the time, if you are using good quality graded-index multimode fiber  
cable that adheres to the standards listed in Appendix B, there should not be  
a need to use mode conditioning patch cords in your network. This is  
especially true if the fiber runs in your network are relatively short.  
Installing the Patch Cord  
As shown in the illustration below, connect the patch cord to the ProCurve  
transceiver with the section of single mode fiber plugged in to the Tx  
(transmit) port. Then, connect the other end of the patch cord to your network  
cabling patch panel, or directly to the network multimode fiber.  
If you connect the patch cord directly to the network cabling, you may need  
to install a female-to-female adapter to allow the cables to be connected  
together.  
A-6  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Specifications  
Mode Conditioning Patch Cord  
Gigabit-LX port  
To network  
multimode  
cabling  
Mode Conditioning  
Patch Cord  
Single mode section plugs into Tx  
port on Gigabit-LX Transceiver or  
Gigabit-LX mini-GBIC  
The multimode cable in the patch cord  
must match the characteristics ofyour  
network cable  
Figure A-1. Example: Connecting a Mode Conditioning Patch Cord for Gigabit-LX  
Make sure you purchase a patch cord that has appropriate connectors on each  
end, and has multimode fibers that match the characteristics of the multimode  
fiber in your network. Most important, the core diameter of the multimode  
patch cord must match the core diameter of the multimode cable  
infrastructure (either 50 or 62.5 microns).  
A-7  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Specifications  
Twisted-Pair Cable/Connector Pin-Outs  
Twisted-Pair Cable/Connector Pin-Outs  
The Auto-MDIX Feature: In the default configuration, “Auto”, the fixed 10/  
100/1000Base-T ports on the 2520G-PoE switches all automatically detect the  
type of port on the connected device and operate as either an MDI or  
MDI-X port, whichever is appropriate. So for any connection, a straight-  
through twisted-pair cable can be used—you no longer have to use crossover  
cables, although crossover cables can also be used for any of the connections.  
(The 10/100/1000-T ports support the IEEE 802.3ab standard, which includes  
the “Auto-MDIX” feature.)  
If you connect a 2520G-PoE switch twisted-pair port to another switch or hub,  
which typically have MDI-X ports, the 2520G-PoE switch port automatically  
operates as an MDI port. If you connect it to an end node, such as a server or  
PC, which typically have MDI ports, the 2520G-PoE switch port operates as  
an MDI-X port. In all cases, you can use standard straight-through cables or  
crossover cables.  
If you happen to use a correctly wired crossover cable, though, the switch will  
still be able to automatically detect the MDI/MDI-X operation and link  
correctly to the connected device.  
N o t e  
Using Fixed Configurations. If the port configuration is changed to any of  
the fixed configurations though, for example 100 Mbps/full duplex, the port  
operates as MDI-X only and the correct cable type must be used: for  
connections to MDI ports, such as end nodes, use a straight-through cable; for  
connections to MDI-X ports, such as on hubs and other switches, use a  
crossover cable.  
Other Wiring Rules:  
■
All twisted-pair wires used for 10 Mbps, and 100 Mbps operation must be  
twisted through the entire length of the cable. The wiring sequence must  
conform to EIA/TIA 568-B (not USOC). See “Twisted-Pair Cable Pin  
Assignments” later in this appendix for a listing of the signals used on each  
pin.  
■
■
For 1000Base-T connections, all four pairs of wires in the cable must be  
available for data transmission.  
For 10 Mbps connections to the ports, you can use Category 3, 4, or 5  
unshielded twisted-pair cable, as supported by the IEEE 802.3 Type  
10Base-T standard.  
A-8  
Download from Www.Somanuals.com. All Manuals Search And Download.  
         
Specifications  
Twisted-Pair Cable/Connector Pin-Outs  
■
For 100 Mbps connections to the ports, use 100-ohm Category 5 UTP or  
STP cable only, as supported by the IEEE 802.3u Type 100Base-TX  
standard.  
■
■
For 1000 Mbps connections, 100-ohm Category 5e or better cabling is  
recommended.  
To provide Power over Ethernet to the access point, all 4 pairs must be  
connected for any network cable attached to this port; the cable must  
meet ISO/DIS 11801 Class D requirements and IEEE 802.3af requirements.  
A-9  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Specifications  
Twisted-Pair Cable/Connector Pin-Outs  
Straight-through Twisted-Pair Cable for  
10 Mbps or 100 Mbps Network Connections  
Because of the Auto-MDIX operation of the 10/100 ports on the switch, for all  
network connections, to PCs, servers or other end nodes, or to hubs or other  
switches, you can use straight-through cables.  
If any of these ports are given a fixed configuration, for example 100 Mbps/  
Full Duplex, the ports operate as MDI-X ports, and straight-through cables  
must be then used for connections to PC NICs and other MDI ports.  
Cable Diagram  
N o t e  
Pins 1 and 2 on connector “A” must be wired as a twisted pair to pins 1 and 2  
on connector “B”.  
Pins 3 and 6 on connector “A” must be wired as a twisted pair to pins 3 and 6  
on connector “B”.  
Pins 4, 5, 7, and 8 are not used in this application, although they may be wired  
in the cable.  
.
Pin Assignments  
Switch End (MDI-X)  
Computer, Transceiver, or  
Other End  
Signal  
Pins  
Pins  
Signal  
receive +  
receive -  
transmit +  
transmit -  
1
2
3
6
1
2
3
6
transmit +  
transmit -  
receive +  
receive -  
A-10  
Download from Www.Somanuals.com. All Manuals Search And Download.  
         
Specifications  
Twisted-Pair Cable/Connector Pin-Outs  
Crossover Twisted-Pair Cable for  
10 Mbps or 100 Mbps Network Connection  
The Auto-MDIX operation of the 10/100 ports on the switch also allows you to  
use crossover cables for all network connections, to PCs, servers or other end  
nodes, or to hubs or other switches.  
If any of these ports are given a fixed configuration, for example 100 Mbps/  
Full Duplex, the ports operate as MDI-X ports, and crossover cables must be  
then used for connections to hubs or switches or other MDI-X network  
devices.  
Cable Diagram  
N o t e  
Pins 1 and 2 on connector “A” must be wired as a twisted pair to pins 3 and 6  
on connector “B”.  
Pins 3 and 6 on connector “A” must be wired as a twisted pair to pins 1 and 2  
on connector “B”.  
Pins 4, 5, 7, and 8 are not used in this application, although they may be wired  
in the cable.  
Pin Assignments  
Switch End (MDI-X)  
Hub or Switch Port, or Other  
MDI-X Port End  
Signal  
Pins  
Pins  
Signal  
receive +  
receive -  
transmit +  
transmit -  
1
2
3
6
6
3
2
1
transmit -  
transmit +  
receive -  
receive +  
A-11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
         
Specifications  
Twisted-Pair Cable/Connector Pin-Outs  
Straight-Through Twisted-Pair Cable for  
1000 Mbps Network Connections  
1000Base-T connections require that all four pairs of wires be connected.  
Cable Diagram  
N o t e  
Pins 1 and 2 on connector “A” must be wired as a twisted pair to pins 1 and 2  
on connector “B”.  
Pins 3 and 6 on connector “A” must be wired as a twisted pair to pins 3 and 6  
on connector “B”.  
Pins 4 and 5 on connector “A” must be wired as a twisted pair to pins 4 and 5  
on connector “B”.  
Pins 7 and 8 on connector “A” must be wired as a twisted pair to pins 7 and 8  
on connector “B”.  
.
Pin Assignments  
For 1000Base-T operation, all four pairs of wires are used for both transmit  
and receive.  
A-12  
Download from Www.Somanuals.com. All Manuals Search And Download.  
         
B
Safety and EMC Regulatory Statements  
Safety Information  
Documentation reference symbol. If the product is marked with this  
symbol, refer to the product documentation to get more information  
about the product.  
!
WARNING  
A WARNING in the manual denotes a hazard that can cause injury  
or death.  
Caution  
A Caution in the manual denotes a hazard that can damage equip-  
ment.  
Do not proceed beyond a WARNING or Caution notice until you  
have understood the hazardous conditions and have taken appro-  
priate steps.  
Grounding  
Thesearesafety classIproductsandhaveprotectiveearthingterminals. There  
must be an uninterruptible safety earth ground from the main power source  
to the product's input wiring terminals, power cord, or supplied power cord  
set. Whenever it is likely that the protection has been impaired, disconnect  
the power cord until the ground has been restored.  
For LAN cable grounding:  
■
If your LAN covers an area served by more than one power distribu-  
tion system, be sure their safety grounds are securely interconnected.  
■
LAN cables may occasionally be subject to hazardous transient volt-  
ages (such aslightning or disturbancesin the electrical utilities power  
grid). Handle exposed metal components of the networkwith caution.  
Servicing  
There are no user-serviceable parts inside these products. Any servicing,  
adjustment, maintenance, or repair mustbe performed only by service-trained  
personnel.  
These products do not have a power switch; they are powered on when the  
power cord is plugged in.  
B-1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
         
Safety and EMC Regulatory Statements  
Informations concernant la sécurité  
Informations concernant la sécurité  
Symbole de référence à la documentation. Si le produit est marqué de  
ce symbole, reportez-vous à la documentation du produit afin d'obtenir  
des informations plus détaillées.  
!
WARNING  
Dans la documentation, un WARNING indique un danger susceptible  
d'entraîner des dommages corporels ou la mort.  
Caution  
Un texte de mise en garde intitulé Caution indique un danger suscep-  
tible de causer des dommages à l'équipement.  
Ne continuez pas au-delà d'une rubrique WARNING ou Caution avant  
d'avoir bien compris les conditions présentant un danger et pris les  
mesures appropriées.  
Cet appareil est un produit de classe I et possède une borne de mise à la terre. La source  
d'alimentation principale doit être munie d'une prise de terre de sécurité installée aux  
bornes du câblage d'entrée, sur le cordon d'alimentation ou le cordon de raccordement  
fourni avec le produit. Lorsque cette protection semble avoir été endommagée,  
débrancher le cordon d'alimentation jusqu'à ce que la mise à la terre ait été réparée.  
Mise à la terre du câble de réseau local:  
■
si votre réseau local s'étend sur une zone desservie par plus d'un système de  
distribution de puissance, assurez-vous que les prises de terre de sécurité  
soient convenablement interconnectées.  
■
Les câbles de réseaux locaux peuvent occasionnellement être soumis à des  
surtensions transitoires dangereuses (telles que la foudre ou des perturba-  
tions dans le réseau d'alimentation public). Manipulez les composants  
métalliques du réseau avec précautions.  
Aucune pièce contenue à l'intérieur de ce produit ne peut être réparée par l'utilisateur.  
Tout dépannage, réglage, entretien ou réparation devra être confié exclusivement à un  
personnel qualifié.  
Cet appareil ne comporte pas de commutateur principal; la mise sous tension est  
effectuée par branchement du cordon d'alimentation.  
B-2  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Safety and EMC Regulatory Statements  
Hinweise zur Sicherheit  
Hinweise zur Sicherheit  
Symbol für Dokumentationsverweis. Wenn das Produkt mit diesem  
Symbol markiert ist, schlagen Sie bitte in der Produktdokumentation  
nach, um mehr Informationen über das Produkt zu erhalten.  
!
WARNING  
Eine WARNING in der Dokumentation symbolisiert eine Gefahr, die  
Verletzungen oder sogar Todesfälle verursachen kann.  
Caution  
Caution in der Dokumentation symbolisiert eine Gefahr, die dis Gerät  
beschädigen kann.  
Fahren Sie nach dem Hinweis WARNING oder Caution erst fort,  
nachdem Sie den Gefahrenzustand verstanden und die entsprech-  
enden Maßnahmen ergriffen haben.  
Dies ist ein Gerät der Sicherheitsklasse I und verfügt über einen schützenden Erdung-  
sterminal. Der Betrieb des Geräts erfordert eine ununterbrochene Sicherheitserdung  
von der Hauptstromquelle zu den Geräteingabeterminals, den Netzkabeln oder dem  
mit Strom belieferten Netzkabelsatz voraus. Sobald Grund zur Annahme besteht, daß  
der Schutz beeinträchtigt worden ist, das Netzkabel aus der Wandsteckdose  
herausziehen, bis die Erdung wiederhergestellt ist.  
Für LAN-Kabelerdung:  
■
Wenn Ihr LAN ein Gebiet umfaßt, das von mehr als einem Stromverteilungs-  
system beliefert wird, müssen Sie sich vergewissern, daß die  
Sicherheitserdungen fest untereinander verbunden sind.  
■
LAN-Kabel können gelegentlich gefährlichen Übergangsspannungen ausge-  
setzt werden (beispielsweise durch Blitz oder Störungen in dem  
Starkstromnetz des Elektrizitätswerks). Bei der Handhabung exponierter  
Metallbestandteile des Netzwerkes Vorsicht walten lassen.  
Dieses Gerät enthält innen keine durch den Benutzer zu wartenden Teile. Wartungs-,  
Anpassungs-, Instandhaltungs- oder Reparaturarbeiten dürfen nur von geschultem  
Bedienungspersonal durchgeführt werden.  
Dieses Gerät hat keinen Netzschalter; es wird beim Anschließen des Netzkabels  
eingeschaltet.  
B-3  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Safety and EMC Regulatory Statements  
Considerazioni sulla sicurezza  
Considerazioni sulla sicurezza  
Simbolo di riferimento alla documentazione. Se il prodotto è  
contrassegnato da questo simbolo, fare riferimento alla documen-  
tazione sul prodotto per ulteriori informazioni su di esso.  
!
WARNING  
La dicitura WARNINGdenota un pericolo che può causare lesioni o  
morte.  
Caution  
La dicituraCaution denota un pericolo che può danneggiare le attr-  
ezzature.  
NonprocedereoltreunavvisodiWARNINGodiCautionprimadiaver  
compreso le condizioni di rischio e aver provveduto alle misure del  
caso.  
Questo prodotto è omologato nella classe di sicurezza I ed ha un terminale protettivo  
di collegamento a terra. Dev'essere installato un collegamento a terra di sicurezza, non  
interrompibile che vada dalla fonte d'alimentazione principale ai terminali d'entrata,  
al cavo d'alimentazione oppure al set cavo d'alimentazione fornito con il prodotto.  
Ogniqualvolta vi sia probabilità di danneggiamento della protezione, disinserite il cavo  
d'alimentazione fino a quando il collegaento a terra non sia stato ripristinato.  
Per la messa a terra dei cavi LAN:  
■
se la vostra LAN copre un'area servita da più di un sistema di distribuzione  
elettrica, accertatevi che i collegamentia terra disicurezzasiano ben collegati  
fra loro;  
■
i cavi LAN possono occasionalmente andare soggetti a pericolose tensioni  
transitorie (ad esempio, provocate da lampi o disturbi nella griglia d'alimen-  
tazione della società elettrica); siate cauti nel toccare parti esposte in metallo  
della rete.  
Nessun componente di questo prodotto può essere riparato dall'utente. Qualsiasi  
lavoro di riparazione, messa a punto, manutenzione o assistenza va effettuato esclusi-  
vamente da personale specializzato.  
Questo apparato non possiede un commutatore principale; si mette scotto tensione  
all'inserirsi il cavo d'alimentazione.  
B-4  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Safety and EMC Regulatory Statements  
Consideraciones sobre seguridad  
Consideraciones sobre seguridad  
Símbolo de referencia a la documentación. Si el producto va  
marcado con este símbolo, consultar la documentación del  
producto a fin de obtener mayor información sobre el producto.  
!
WARNING  
Una WARNING en la documentación señala un riesgo que podría  
resultar en lesiones o la muerte.  
Caution  
Una Caution en la documentación señala un riesgo que podría  
resultar en averías al equipo.  
No proseguir después de un símbolo de WARNING o Caution hasta  
no haber entendido las condiciones peligrosas y haber tomado las  
medidas apropiadas.  
Este aparato se enmarca dentro de la clase I de seguridad y se encuentra protegido por  
una borna de puesta a tierra. Es preciso que exista una puesta a tierra continua desde  
la toma de alimentación eléctrica hasta las bornas de los cables de entrada del aparato,  
el cable de alimentación o el juego de cable de alimentación suministrado. Si existe la  
probabilidad de que la protección a tierra haya sufrido desperfectos, desenchufar el  
cable de alimentación hasta haberse subsanado el problema.  
Puesta a tierra del cable de la red local (LAN):  
■
Si la LAN abarca un área cuyo suministro eléctrico proviene de más de una  
red de distribución de electricidad, cerciorarse de que las puestas a tierra  
estén conectadas entre sí de modo seguro.  
■
Es posible que los cables de la LAN se vean sometidos de vez en cuando a  
voltajes momentáneos que entrañen peligro (rayos o alteraciones en la red  
de energía eléctrica). Manejar con precaución los componentes de metal de  
la LAN que estén al descubierto.  
Este aparato no contiene pieza alguna susceptible de reparación por parte del usuario.  
Todas las reparaciones, ajustes o servicio de mantenimiento debe realizarlos sola-  
mente el técnico.  
Este producto no tiene interruptor de potencia; se activa cuando se enchufa el cable  
de alimentación.  
B-5  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Safety and EMC Regulatory Statements  
Safety Information (Japan)  
Safety Information (Japan)  
J a p a n P o w e r  
C o r d W a r n i n g  
B-6  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Safety and EMC Regulatory Statements  
Safety Information (China)  
Safety Information (China)  
B-7  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Safety and EMC Regulatory Statements  
EMC Regulatory Statements  
EMC Regulatory Statements  
U.S.A.  
FCC Class A  
This equipment has been tested and found to comply with the limits for a Class  
A digital device, pursuant to Part 15 of the FCC Rules. These limits are  
designed to provide reasonable protection against interference when the  
equipment is operated in a commercial environment. This equipment gener-  
ates, uses, and can radiate radio frequency energy and, if not installed and  
used in accordance with the instruction manual, may cause interference to  
radio communications. Operation of this equipment in a residential area may  
cause interference in which case the user will be required to correct the  
interference at his own expense.  
Canada  
This product complies with Class A Canadian EMC requirements.  
Australia/New Zealand  
This product complies with Australia/New Zealand EMC Class A  
requirements.  
Japan  
VCCI Class A  
B-8  
Download from Www.Somanuals.com. All Manuals Search And Download.  
           
Safety and EMC Regulatory Statements  
EMC Regulatory Statements  
Korea  
Taiwan  
B-9  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
Safety and EMC Regulatory Statements  
EMC Regulatory Statements  
European Community  
B-10  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
Safety and EMC Regulatory Statements  
EMC Regulatory Statements  
B-11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
D
Recycle Statements  
Waste Electrical and Electronic  
Equipment (WEEE) Statements  
Disposal of Waste Equipment by Users in Private Household in the European Union  
This symbol on the product or on its packaging indicates that this product must not be disposed of with  
your other household waste. Instead, it is your responsibility to dispose of your waste equipment by  
handing it over to a designated collection point for the recycling of waste electrical and electronic  
equipment. The separate collection and recycling of your waste equipment at the time of disposal will  
help to conserve natural resources and ensure that it is recycled in a manner that protects human health  
and the environment. For more information about where you can drop off your waste equipment for  
recycling, please contact your local city office, your household waste disposal service or the shop where  
you purchased the product.  
Likvidace zařízení soukromými domácími uživateli v Evropské unii  
Tento symbol na produktu nebo balení označuje výrobek, který nesmí být vyhozen spolu s ostatním  
domácím odpadem. Povinností uživatele je předat takto označený odpad na předem určené sběrné  
místo pro recyklaci elektrických a elektronických zařízení. Okamžité třídění a recyklace odpadu  
pomůže uchovat přírodní prostředí a zajistí takový způsob recyklace, který ochrání zdraví a životní  
prostředí člověka. Další informace o možnostech odevzdání odpadu k recyklaci získáte na  
příslušném obecním nebo městském úřadě, od firmy zabývající se sběrem a svozem odpadu nebo v  
obchodě, kde jste produkt zakoupili.  
Bortskaffelse af affald fra husstande i den Europæiske Union  
Hvis produktet eller dets emballage er forsynet med dette symbol, angiver det, at produktet ikke må  
bortskaffes med andet almindeligt husholdningsaffald. I stedet er det dit ansvar at bortskaffe kasseret  
udstyr ved at aflevere det på den kommunale genbrugsstation, der forestår genvinding af kasseret  
elektrisk og elektronisk udstyr. Den centrale modtagelse og genvinding af kasseret udstyr i forbindelse  
med bortskaffelsen bidrager til bevarelse af naturlige ressourcer og sikrer, at udstyret genvindes på en  
måde, der beskytter både mennesker og miljø. Yderligere oplysninger om, hvor du kan aflevere kasseret  
udstyr til genvinding, kan du få hos kommunen, den lokale genbrugsstation eller i den butik, hvor du købte  
produktet.  
Seadmete jäätmete kõrvaldamine eramajapidamistes Euroopa Liidus  
See tootel või selle pakendil olev sümbol näitab, et kõnealust toodet ei tohi koos teiste majapidamisjäät-  
metega kõrvaldada. Teie kohus on oma seadmete jäätmed kõrvaldada, viies need elektri- ja elektroon-  
ikaseadmete jäätmete ringlussevõtmiseks selleks ettenähtud kogumispunkti. Seadmete jäätmete eraldi  
kogumine ja ringlussevõtmine kõrvaldamise ajal aitab kaitsta loodusvarasid ning tagada, et ringlussev-  
õtmine toimub viisil, mis kaitseb inimeste tervist ning keskkonda. Lisateabe saamiseks selle kohta, kuhu  
oma seadmete jäätmed ringlussevõtmiseks viia, võtke palun ühendust oma kohaliku linnakantselei,  
majapidamisjäätmete kõrvaldamise teenistuse või kauplusega, kust Te toote ostsite.  
D-1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
       
Recycle Statements  
Waste Electrical and Electronic Equipment (WEEE) Statements  
Laitteiden hävittäminen kotitalouksissa Euroopan unionin alueella  
Jos tuotteessa tai sen pakkauksessa on tämä merkki, tuotetta ei saa hävittää kotitalousjätteiden mukana.  
Tällöin hävitettävä laite on toimitettava sähkölaitteiden ja elektronisten laitteiden kierrätyspisteeseen.  
Hävitettävien laitteiden erillinen käsittely ja kierrätys auttavat säästämään luonnonvaroja ja varmista-  
maan, että laite kierrätetään tavalla, joka estää terveyshaitat ja suojelee luontoa. Lisätietoja paikoista,  
joihin hävitettävät laitteet voi toimittaa kierrätettäväksi, saa ottamalla yhteyttä jätehuoltoon tai liikkee-  
seen, josta tuote on ostettu.  
Élimination des appareils mis au rebut par les ménages dans l'Union européenne  
Le symbole apposé sur ce produit ou sur son emballage indique que ce produit ne doit pas être jeté avec  
les déchets ménagers ordinaires. Il est de votre responsabilité de mettre au rebut vos appareils en les  
déposant dans les centres de collecte publique désignés pour le recyclage des équipements électriques  
et électroniques. La collecte et le recyclage de vos appareils mis au rebut indépendamment du reste  
des déchets contribue à la préservation des ressources naturelles et garantit que ces appareils seront  
recyclés dans le respect de la santé humaine et de l'environnement. Pour obtenir plus d'informations  
sur les centres de collecte et de recyclage des appareils mis au rebut, veuillez contacter les autorités  
locales de votre région, les services de collecte des ordures ménagères ou le magasin dans lequel vous  
avez acheté ce produit.  
Entsorgung von Altgeräten aus privaten Haushalten in der EU  
Das Symbol auf dem Produkt oder seiner Verpackung weist darauf hin, dass das Produkt nicht über den  
normalen Hausmüll entsorgt werden darf. Benutzer sind verpflichtet, die Altgeräte an einer Rück-  
nahmestelle für Elektro- und Elektronik-Altgeräte abzugeben. Die getrennte Sammlung und ordnungs-  
gemäße Entsorgung Ihrer Altgeräte trägt zur Erhaltung der natürlichen Ressourcen bei und garantiert  
eine Wiederverwertung, die die Gesundheit des Menschen und die Umwelt schützt. Informationen dazu,  
wo Sie Rücknahmestellen für Ihre Altgeräte finden, erhalten Sie bei Ihrer Stadtverwaltung, den örtlichen  
Müllentsorgungsbetrieben oder im Geschäft, in dem Sie das Gerät erworben haben  
Απόρριψη άχρηστου εξοπλισμού από χρήστες σε ιδιωτικά νοικοκυριά στην Ευρωπαϊκή  
Ένωση  
Το σύμβολο αυτό στο προϊόν ή τη συσκευασία του υποδεικνύει ότι το συγκεκριμένο προϊόν δεν  
πρέπει να διατίθεται μαζί με τα άλλα οικιακά σας απορρίμματα. Αντίθετα, είναι δική σας ευθύνη να  
απορρίψετε τον άχρηστο εξοπλισμό σας παραδίδοντάς τον σε καθορισμένο σημείο συλλογής για την  
ανακύκλωση άχρηστου ηλεκτρικού και ηλεκτρονικού εξοπλισμού. Η ξεχωριστή συλλογή και  
ανακύκλωση του άχρηστου εξοπλισμού σας κατά την απόρριψη θα συμβάλει στη διατήρηση των  
φυσικών πόρων και θα διασφαλίσει ότι η ανακύκλωση γίνεται με τρόπο που προστατεύει την  
ανθρώπινη υγεία και το περιβάλλον. Για περισσότερες πληροφορίες σχετικά με το πού μπορείτε να  
παραδώσετε τον άχρηστο εξοπλισμό σας για ανακύκλωση, επικοινωνήστε με το αρμόδιο τοπικό  
γραφείο, την τοπική υπηρεσία διάθεσης οικιακών απορριμμάτων ή το κατάστημα όπου αγοράσατε το  
προϊόν.  
Készülékek magánháztartásban történő selejtezése az Európai Unió területén  
A készüléken, illetve a készülék csomagolásán látható azonos szimbólum annak jelzésére szolgál,  
hogy a készülék a selejtezés során az egyéb háztartási hulladéktól eltérő módon kezelendő. A  
vásárló a hulladékká vált készüléket köteles a kijelölt gyűjtőhelyre szállítani az elektromos és  
elektronikai készülékek újrahasznosítása céljából. A hulladékká vált készülékek selejtezéskori  
begyűjtése és újrahasznosítása hozzájárul a természeti erőforrások megőrzéséhez, valamint  
biztosítja a selejtezett termékek környezetre és emberi egészségre nézve biztonságos feldolgozását.  
A begyűjtés pontos helyéről bővebb tájékoztatást a lakhelye szerint illetékes önkormányzattól, az  
illetékes szemételtakarító vállalattól, illetve a terméket elárusító helyen kaphat.  
D-2  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Recycle Statements  
Waste Electrical and Electronic Equipment (WEEE) Statements  
Smaltimento delle apparecchiature da parte di privati nel territorio dell'Unione Europea  
Questo simbolo presente sul prodotto o sulla sua confezione indica che il prodotto non può essere  
smaltito insieme ai rifiuti domestici. È responsabilità dell'utente smaltire le apparecchiature consegnan-  
dole presso un punto di raccolta designato al riciclo e allo smaltimento di apparecchiature elettriche ed  
elettroniche. La raccolta differenziata e il corretto riciclo delle apparecchiature da smaltire permette di  
proteggere la salute degli individui e l'ecosistema. Per ulteriori informazioni relative ai punti di raccolta  
delle apparecchiature, contattare l'ente locale per lo smaltimento dei rifiuti, oppure il negozio presso il  
quale è stato acquistato il prodotto.  
Nolietotu iekārtu iznīcināšanas noteikumi lietotājiem Eiropas Savienības privātajās  
mājsaimniecībās  
Šāds simbols uz izstrādājuma vai uz tā iesaiņojuma norāda, ka šo izstrādājumu nedrīkst izmest kopā ar  
citiem sadzīves atkritumiem. Jūs atbildat par to, lai nolietotās iekārtas tiktu nodotas speciāli iekārtotos  
punktos, kas paredzēti izmantoto elektrisko un elektronisko iekārtu savākšanai otrreizējai pārstrādei.  
Atsevišķa nolietoto iekārtu savākšana un otrreizējā pārstrāde palīdzēs saglabāt dabas resursus un  
garantēs, ka šīs iekārtas tiks otrreizēji pārstrādātas tādā veidā, lai pasargātu vidi un cilvēku veselību.  
Lai uzzinātu, kur nolietotās iekārtas var izmest otrreizējai pārstrādei, jāvēršas savas dzīves vietas  
pašvaldībā, sadzīves atkritumu savākšanas dienestā vai veikalā, kurā izstrādājums tika nopirkts.  
Vartotojų iš privačių namų ūkių įrangos atliekų šalinimas Europos Sąjungoje  
Šis simbolis ant gaminio arba jo pakuotės rodo, kad šio gaminio šalinti kartu su kitomis namų ūkio  
atliekomis negalima. Šalintinas įrangos atliekas privalote pristatyti į specialią surinkimo vietą elektros ir  
elektroninės įrangos atliekoms perdirbti. Atskirai surenkamos ir perdirbamos šalintinos įrangos atliekos  
padės saugoti gamtinius išteklius ir užtikrinti, kad jos bus perdirbtos tokiu būdu, kuris nekenkia žmonių  
sveikatai ir aplinkai. Jeigu norite sužinoti daugiau apie tai, kur galima pristatyti perdirbtinas įrangos  
atliekas, kreipkitės į savo seniūniją, namų ūkio atliekų šalinimo tarnybą arba parduotuvę, kurioje  
įsigijote gaminį.  
Verwijdering van afgedankte apparatuur door privé-gebruikers in de Europese Unie  
Dit symbool op het product of de verpakking geeft aan dat dit product niet mag worden gedeponeerd bij  
het normale huishoudelijke afval. U bent zelf verantwoordelijk voor het inleveren van uw afgedankte  
apparatuur bij een inzamelingspunt voor het recyclen van oude elektrische en elektronische apparatuur.  
Door uw oude apparatuur apart aan te bieden en te recyclen, kunnen natuurlijke bronnen worden  
behouden en kan het materiaal worden hergebruikt op een manier waarmee de volksgezondheid en het  
milieu worden beschermd. Neem contact op met uw gemeente, het afvalinzamelingsbedrijf of de winkel  
waar u het product hebt gekocht voor meer informatie over inzamelingspunten waar u oude apparatuur  
kunt aanbieden voor recycling.  
Pozbywanie się zużytego sprzętu przez użytkowników w prywatnych gospodarstwach  
domowych w Unii Europejskiej  
Ten symbol na produkcie lub jego opakowaniu oznacza, że produktu nie wolno wyrzucać do zwykłych  
pojemników na śmieci. Obowiązkiem użytkownika jest przekazanie zużytego sprzętu do  
wyznaczonego punktu zbiórki w celu recyklingu odpadów powstałych ze sprzętu elektrycznego i  
elektronicznego. Osobna zbiórka oraz recykling zużytego sprzętu pomogą w ochronie zasobów  
naturalnych i zapewnią ponowne wprowadzenie go do obiegu w sposób chroniący zdrowie człowieka  
i środowisko. Aby uzyskać więcej informacji o tym, gdzie można przekazać zużyty sprzęt do  
recyklingu, należy się skontaktować z urzędem miasta, zakładem gospodarki odpadami lub sklepem,  
w którym zakupiono produkt.  
D-3  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Recycle Statements  
Waste Electrical and Electronic Equipment (WEEE) Statements  
Descarte de Lixo Elétrico na Comunidade Européia  
Este símbolo encontrado no produto ou na embalagem indica que o produto não deve ser descartado  
no lixo doméstico comum. É responsabilidade do cliente descartar o material usado (lixo elétrico),  
encaminhando-o para um ponto de coleta para reciclagem. A coleta e a reciclagem seletivas desse  
tipo de lixo ajudarão a conservar as reservas naturais; sendo assim, a reciclagem será feita de uma  
forma segura, protegendo o ambiente e a saúde das pessoas. Para obter mais informações sobre locais  
que reciclam essetipo de material, entre em contato com o escritório daHP em sua cidade, com o serviço  
de coleta de lixo ou com a loja em que o produto foi adquirido.  
Likvidácia vyradených zariadení v domácnostiach v Európskej únii  
Symbol na výrobku alebo jeho balení označuje, že daný výrobok sa nesmie likvidovať s domovým  
odpadom. Povinnosťou spotrebiteľa je odovzdať vyradené zariadenie v zbernom mieste, ktoré je  
určené na recykláciu vyradených elektrických a elektronických zariadení. Separovaný zber a  
recyklácia vyradených zariadení prispieva k ochrane prírodných zdrojov a zabezpečuje, že recyklácia  
sa vykonáva spôsobom chrániacim ľudské zdravie a životné prostredie. Informácie o zberných  
miestach na recykláciu vyradených zariadení vám poskytne miestne zastupiteľstvo, spoločnosť  
zabezpečujúca odvoz domového odpadu alebo obchod, v ktorom ste si výrobok zakúpili.  
Odstranjevanje odslužene opreme uporabnikov v zasebnih gospodinjstvih v Evropski uniji  
Ta znak na izdelku ali njegovi embalaži pomeni, da izdelka ne smete odvreči med gospodinjske  
odpadke. Nasprotno, odsluženo opremo morate predati na zbirališče, pooblaščeno za recikliranje  
odslužene električne in elektronske opreme. Ločeno zbiranje in recikliranje odslužene opreme  
prispeva k ohranjanju naravnih virov in zagotavlja recikliranje te opreme na zdravju in okolju neškodljiv  
način. Za podrobnejše informacije o tem, kam lahko odpeljete odsluženo opremo na recikliranje, se  
obrnite na pristojni organ, komunalno službo ali trgovino, kjer ste izdelek kupili.  
Eliminación de residuos de equipos eléctricos y electrónicos por parte de usuarios particulares en la  
Unión Europea  
Este símbolo en el producto o en su envase indica que no debe eliminarse junto con los desperdicios  
generales de la casa. Es responsabilidad del usuario eliminar los residuos de este tipo depositándolos  
en un "punto limpio" para el reciclado de residuos eléctricos y electrónicos. La recogida y el reciclado  
selectivos de los residuos de aparatos eléctricos en el momento de su eliminación contribuirá a  
conservar los recursos naturales y a garantizar el reciclado de estos residuos de forma que se proteja  
el medio ambiente y la salud. Para obtener más información sobre los puntos de recogida de residuos  
eléctricos y electrónicos para reciclado, póngase en contacto con su ayuntamiento, con el servicio de  
eliminación de residuos domésticos o con el establecimiento en el que adquirió el producto.  
Bortskaffande av avfallsprodukter från användare i privathushåll inom Europeiska Unionen  
Om den här symbolen visas på produkten eller förpackningen betyder det att produkten inte får  
slängas på samma ställe som hushållssopor. I stället är det ditt ansvar att bortskaffa avfallet genom att  
överlämna det till ett uppsamlingsställe avsett för återvinning av avfall från elektriska och elektroniska  
produkter. Separat insamling och återvinning av avfallet hjälper till att spara på våra naturresurser och  
gör att avfallet återvinns på ett sätt som skyddar människors hälsa och miljön. Kontakta ditt lokala  
kommunkontor, din närmsta återvinningsstation för hushållsavfall eller affären där du köpte produkten  
för att få mer information om var du kan lämna ditt avfall för återvinning.  
D-4  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Index  
cables  
connecting cables to switch ports … 2-17  
effects of non-standard cables … 4-2  
infrastructure requirements … 2-5  
serial, for direct console connection … 2-21  
cables, twisted pair  
Numerics  
10/100Base-TX ports  
location on switch … 1-3  
1000Base-BX … A-5  
fiber-optic cable specifications … A-5  
1000Base-LH … A-5  
category 3, 4, 5 … A-8  
fiber-optic cable specifications … A-5  
1000Base-T  
cross-over cable pin-out … A-11  
MDI-X to MDI connections … A-10, A-12  
MDI-X to MDI-X connections … A-11  
pin-outs … A-10, A-12  
1000Base-T  
fiber-optic cable specifications … A-5  
straight-through cable pin-out … A-10, A-12  
switch-to-computer connection … A-10, A-12  
switch-to-switch or hub connection … A-11  
cables, twisted-pair  
HP Auto-MDIX feature … A-8  
wiring rules … A-8  
cables, twisted-pair connector pin-outs … A-8  
cabling infrastructure … 2-5  
Clear button  
A
AC power connector  
location on back of switch … 1-9  
acoustic specifications … A-2  
auto MDI/MDI-X operation … A-10, A-12  
HP Auto-MDIX feature … A-8  
B
deleting passwords … 1-8  
description … 1-8  
location on switch … 1-3, 1-8  
restoring factory default configuration … 1-8,  
4-12  
back of switch  
description … 1-9  
power connector … 1-9  
backbone switch  
topology with … 2-25  
basic switch configuration  
IP address … 3-2  
manager password … 3-2  
subnet mask … 3-2  
Switch Setup screen … 3-2  
basic troubleshooting tips … 4-1  
Bootp  
automatic switch configuration … 3-1  
for in-band access … 2-20  
BTU ratings … A-2  
to delete password protection … 3-4  
CLI prompt, console  
displaying … 2-21  
configuration  
checking when troubleshooting … 4-3  
DHCP/Bootp … 3-1  
IP address … 3-2  
IP address, manually … 3-2  
manager password … 3-2  
restoring factory defaults … 1-8, 4-12  
subnet mask … 3-2  
Switch Setup screen … 3-2  
connecting the switch to a power source … 2-15  
buttons  
Clear button … 1-8  
Reset button … 1-8  
C
cabinet  
mounting the switch in … 2-8  
Index – 1  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
console  
checking messages during  
F
factory default configuration, restoring … 1-8, 4-12  
Fan Status LED … 1-4  
Fault LED … 1-4  
troubleshooting … 4-10  
displaying the CLI prompt … 2-21  
features … 2-20  
how to connect in-band … 2-20  
how to connect out-of-band … 2-20  
serial cable connection … 2-21  
Switch Setup screen … 3-2  
Telnet access … 3-5  
behavior during self test … 2-8  
behaviors … 1-4  
flashing definition … 1-5–1-6  
location on switch … 1-3  
showing error conditions … 4-4  
features  
terminal configuration … 2-20  
console … 2-20  
switch … 1-10  
console port  
definition … 1-8  
location on switch … 1-3  
cross-over cable  
pin-out … A-11  
fiber-optic cables  
1000Base-BX … A-5  
1000Base-LH … A-5  
1000Base-T … A-5  
flashing LEDs  
D
error indications … 4-4  
front of switch … 1-3  
10/100Base-TX ports … 1-3  
Clear button … 1-8  
deleting passwords … 1-8  
description  
back of switch … 1-9  
front of switch … 1-3  
LEDs … 1-4  
switch … 1-1  
description … 1-3  
LEDs … 1-4  
network ports … 1-3  
Reset button … 1-8  
desktop switch  
sample topology … 2-22  
DHCP  
full-duplex fixed configuration  
effects on network connections … 4-1  
automatic switch configuration … 3-1  
for in-band access … 2-20  
diagnostic tests … 4-10  
checking the console messages … 4-10  
checking the LEDs … 4-10  
end-to-end connectivity … 4-11  
testing the switch only … 4-10  
testing twisted-pair cabling … 4-11  
downloading new switch software … 4-13  
H
horizontal surface  
mounting switch on … 2-14  
HP Auto-MDIX  
feature description … A-8  
I
in-band … 3-1  
in-band console access  
types of … 2-20  
included parts … 2-1  
E
electrical specifications, switch … A-1  
EMC regulatory statements … B-8  
environmental specifications  
BTU ratings … A-2  
environmental specifications, switch … A-1  
2 – Index  
Download from Www.Somanuals.com. All Manuals Search And Download.  
installation  
connecting the switch to a power source … 2-15  
Multiple-Display Port LEDs … 1-7  
horizontal surface mounting … 2-14  
location considerations … 2-5  
network cable requirements … 2-5  
precautions … 2-3  
rack or cabinet mounting … 2-8  
site preparation … 2-5  
N
network cables  
HP Auto-MDIX feature … A-8  
required types … 2-5  
twisted-pair connector pin-outs … A-8  
twisted-pair, wiring rules … A-8  
network devices  
wall mounting … 2-13  
IP address  
connecting to the switch … 2-17  
network ports  
configuring … 3-2  
IP telephones … 2-23  
connecting to … 2-17  
location on switch … 1-3  
types of … 1-3  
L
LEDs  
non-standard network cables, effects … 4-2  
behavior during self test … 2-8  
checking during troubleshooting … 4-10  
descriptions of … 1-4  
error indications … 4-4  
Fan Status … 1-4  
O
out-of-band console access … 3-5  
Fault … 1-4  
P
behavior during self test … 2-8  
showing error conditions … 4-4  
flashing definition … 1-5–1-6  
location on switch … 1-3  
on switch … 1-4  
parts, included with the switch … 2-1  
password  
configuring … 3-2  
passwords  
deleting with the Clear button … 3-4  
if you lose the password … 3-4  
passwords, deleting … 1-8  
physical specifications, switch … A-1  
Ping test … 4-11  
port  
description … 1-6  
Power … 1-4  
behavior during self test … 2-8  
Self Test … 1-5  
pin-outs  
behavior during self test … 2-8  
link test … 4-11  
location for the switch, considerations … 2-5  
twisted-pair cables … A-8  
PoE LED patterns … 4-8  
PoE troubleshooting … 4-8  
port configuration  
checking when troubleshooting … 4-3  
port LEDs  
description … 1-6  
normal operation … 2-8  
ports  
M
MDI-X to MDI network cable … A-10, A-12  
MDI-X to MDI-X network cable … A-11  
mini-GBICs  
slot, location on switch … 1-3  
mounting the switch  
10/100Base-TX, location on switch … 1-3  
connecting to … 2-17  
console … 2-20  
in a rack or cabinet … 2-8  
precautions … 2-3  
HP Auto-MDIX feature … A-8  
network connections … 2-17  
power connector … 1-9  
on a horizontal surface … 2-14  
on a wall … 2-13  
precautions … 2-13  
Index – 3  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Power LED … 1-4  
behavior during self test … 2-8  
slots for mini-GBICs  
location on switch … 1-3  
specifications  
behaviors … 1-4  
location on switch … 1-3  
acoustic … A-2  
power source  
electrical … A-1  
connecting the switch to … 2-15  
Power-over-Ethernet  
environmental … A-1  
physical … A-1  
PoE power … 1-1  
safety … A-2  
precautions  
straight-through cable  
pin-out … A-10, A-12  
subnet mask  
configuring … 3-2  
switch  
mounting the switch … 2-3  
power requirements … 2-3  
preparing the installation site … 2-5  
Proactive Network tools  
diagnostics with … 4-9  
connecting to a power source … 2-15  
description … 1-1  
downloading new software … 4-13  
electrical specifications … A-1  
environmental specifications … A-1  
features … 1-10  
front panel description … 1-3  
included parts … 2-1  
R
rack  
mounting precautions … 2-3  
mounting the switch in … 2-8  
recycle statements … D-1  
regulatory statements … B-8  
Reset button  
LED descriptions … 1-4  
mounting in a rack or cabinet … 2-8  
mounting on a wall … 2-13  
mounting on horizontal surface … 2-14  
physical specifications … A-1  
switch operation  
description … 1-8  
location on switch … 1-3, 1-8  
restoring factory default configuration … 4-12  
resetting the switch  
factory default reset … 4-12  
location of Reset button … 1-8  
troubleshooting procedure … 4-10  
verifying after installation … 2-6  
Switch Setup screen … 3-2  
configuring a subnet mask … 3-2  
configuring an IP address … 3-2  
field descriptions … 3-3  
S
safety and regulatory statements … B-1  
safety specifications … A-2  
segment switch  
sample topology … 2-23  
self test  
T
Telnet access to the console … 3-5  
terminal configuration … 2-20  
testing  
Fault LED behavior … 2-8  
LED behavior during … 2-8  
Power LED behavior … 2-8  
Self Test LED … 1-5  
behavior during factory default reset … 4-12  
behavior during self test … 2-8  
serial cable  
checking the console messages … 4-10  
checking the LEDs … 4-10  
diagnostic tests … 4-10  
end-to-end communications … 4-11  
link test … 4-11  
Ping test … 4-11  
switch operation … 4-10  
switch-to-device communications … 4-11  
twisted-pair cabling … 4-11  
for direct console connection … 2-21  
SFP ports … 1-2  
4 – Index  
Download from Www.Somanuals.com. All Manuals Search And Download.  
tips for troubleshooting … 4-1  
topologies  
effects of improper topology … 4-2  
samples of … 2-22  
troubleshooting … 4-1  
basic tips … 4-1  
checking port configuration … 4-3  
checking the console messages … 4-10  
checking the LEDs … 4-10  
common network problems … 4-1  
connecting to fixed full-duplex devices … 4-1  
diagnostic tests … 4-10  
effects of improper topology … 4-2  
effects of non-standard cables … 4-2  
link test … 4-11  
Ping test … 4-11  
Proactive Network tools … 4-9  
restoring factory default configuration … 4-12  
testing connections to other devices … 4-11  
testing end-to-end communications … 4-11  
testing the switch … 4-10  
testing the twisted-pair cables … 4-11  
twisted-pair cable  
cross-over cable pin-out … A-11  
pin-outs … A-8, A-10, A-12  
straight-through cable pin-out … A-10, A-12  
switch-to-computer connection … A-10, A-12  
switch-to-switch or hub connection … A-11  
testing … 4-11  
twisted-pair ports  
HP Auto-MDIX feature … A-8  
V
VT-100 terminal  
serial cable connection for … 2-21  
W
wall  
mounting switch on … 2-13  
wiring rules for twisted-pair cables … A-8  
Index – 5  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ProCurve 5400zl Switches  
Installation and Getting Startd Guide  
Technology for better business outcomes  
To learn more, visit www.hp.com/go/procurve/  
© Copyright 2009 Hewlett-Packard Development Company, L.P. The information  
contained herein is subject to change without notice. The only warranties for HP products  
and services are set forth in the express warranty statements accompanying such products  
and services. Nothing herein should be construed as constituting an additional warranty.  
HP will not be liable for technical or editorial errors or omissions contained herein.  
Printed in China  
October 2009  
Manual Part Number  
5992-4975  
Download from Www.Somanuals.com. All Manuals Search And Download.  

Graco Baby Swing PD161994B User Manual
Graco Welding System 313258C User Manual
Haier TV DVD Combo 5115DVD User Manual
HANNspree Flat Panel Television LT0R 12U1 000 User Manual
HANNspree Flat Panel Television ST02 15U1 User Manual
Hans Grohe Indoor Furnishings 04167XX0 User Manual
Harman Car Amplifier HK 990 User Manual
Hotpoint Freezer FZ175X User Manual
HP Hewlett Packard Noise Reduction Machine HP8970b User Manual
Hunter Fan Air Cleaner 30846 User Manual