Baseline Switch 2226-SFP Plus
Baseline Switch 2426-PWR Plus
Baseline Switch 2250-SFP Plus
Installation and User Guide
Installations- und Bedienungsanleitung
3CBLSF26
3CBLSF26PWR
3CBLSF50
www.3Com.com
Part No. 10016622
Published May 2008
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CONTENTS
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ABOUT THIS GUIDE
This guide describes how to install your 3Com Switch
and perform initial management configurations. It
covers the following switches:
If release notes are shipped with your product and the
information there differs from the information in this
guide, follow the instructions in the release notes.
Baseline Switch 2226-SFP Plus (3CBLSF26)
Baseline Switch 2426-PWR Plus (3CBLSF26PWR)
Baseline Switch 2250-SFP Plus (3CBLSF50)
Most user guides and release notes are available in
Adobe Acrobat Reader Portable Document Format (PDF)
or HTML on the 3Com World Wide Web site:
www.3Com.com
Unless noted otherwise, the features, specifications and
procedures described hereafter are shared by all the
switch models covered in this guide. Device drawings,
screen captures and command line interface examples
are based on the 3CBLSF26PWR model. Where features
vary significantly between the switches, examples are
provided for each.
Conventions
Table 1 and Table 2 list conventions that are used
throughout this guide.
Table 1 Notice Icons
This guide is intended for use by those responsible for
installing and setting up network equipment;
consequently, it assumes a basic working knowledge of
LANs (Local Area Networks).
Icon
Notice Type
Description
Information note
Information that describes
important features or instructions
Caution
Warning
Information that alerts you to
potential loss of data or potential
damage to an application, system,
or device
Diese Anleitung ist für die Benutzung durch
Netzwerkadministratoren vorgesehen, die für die
Installation und Einstellung von Netzwerkkomponenten
verantwortlich sind; Erfahrung bei der Arbeit mit LANs
(Local Area Networks) ist vorausgesetzt.
Information that alerts you to
potential personal injury
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8
ABOUT THIS GUIDE
Please include the following information when
contacting us:
Table 2 Text Conventions
Convention
Description
■
■
■
Document title
The words “enter”
and “type”
When you see the word “enter” in this
guide, you must type something, and then
press Return or Enter. Do not press Return
or Enter when an instruction simply says
“type.”
Document part number (on the title page)
Page number (if appropriate)
Example:
Keyboard key names
If you must press two or more keys
simultaneously, the key names are linked
with a plus sign (+). Example:
■
■
■
Baseline Switch 2426-PWR Plus User Guide
Press Ctrl+Alt+Del
Part number: 10016622
Page 25
Words in italics
Italics are used to:
■
■
Emphasize a point.
Denote a new term at the place where it
is defined in the text.
Please note that we can only respond to comments and
questions about 3Com product documentation at this
e-mail address. Questions related to technical support or
sales should be directed in the first instance to your
network supplier.
■
Identify menu names, menu commands,
and software button names. Examples:
From the Help menu, select Contents.
Click OK.
Product Registration
Documentation Comments
You can now register your Baseline Switch on the 3Com
Web site to receive up-to-date information on your
product:
Your suggestions are very important to us. They will
help make our documentation more useful to you.
Please e-mail comments about this document to 3Com
at:
http://esupport.3Com.com
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INTRODUCING THE BASELINE SWITCH
1
This chapter provides an overview of the features and
capabilities of the 3Com Baseline Switch 2226-SFP Plus,
3Com Baseline Switch 2426-PWR Plus, and 3Com
Baseline Switch 2250-SFP Plus. It also identifies the
contents of the Switch package and helps you get to
know the physical features of the device.
Features and Capabilities
The Switch has 24 or 48 shielded RJ-45, 10/100 Mbps
auto-negotiating ports and 2 Gigabit combo ports
(comprised of a RJ-45 port and a Small Form Factor
Pluggable (SFP) transceiver slot) on the front panel for
easy, flexible connection to fiber-based Gigabit media. A
console port is also provided on the front panel to
enable out-of-band configuration.
Overview of the Baseline Switch
®
The 3Com Baseline Switch 2226-SFP Plus is a versatile,
easy-to-use configurable switch.
Autosensing of MDI/MDIX Connections
®
All ports on the Switch can autosense both medium
dependent interface (MDI) and medium dependent
interface crossover (MDIX) connections. This allows you
to connect network devices to each port using either a
normal straight-through TP (twisted pair) cable or a
‘crossover’ TP cable.
The 3Com Baseline Switch 2426-PWR Plus is a
versatile, easy-to-use configurable Power-over-Ethernet
(PoE) Switch.
®
The 3Com Baseline Switch 2250-SFP Plus is a versatile,
easy-to-use configurable switch.
Each Switch is ideal for users who want the high-speed
performance of 10/100 switching with the added
functionality of Gigabit copper and fiber links, but do
not need sophisticated management capabilities. The
Switch is shipped ready for use. No configuration is
necessary.
Any port can therefore be used to connect to another
switch port, server, or workstation without additional
configuration.
Autonegotiating 10/100 Mbps Ports
Each 10/100 Mbps port automatically determines the
speed and duplex mode of the connected equipment
and provides a suitable switched connection. The
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10
INTRODUCING THE BASELINE SWITCH
10/100 Mbps ports can operate in either half-duplex or
full-duplex mode.
Physical Features
Power-over-Ethernet Capability
the Switch. The numbers in these diagrams refer to
The Switch 2426-PWR Plus (3CBLSF26PWR) provides 24
front panel RJ-45 ports that support the IEEE 802.3af
Power-over-Ethernet (PoE) standard. Any 802.3af
compliant device attached to a port can directly draw
power from the Switch over the Ethernet cable without
requiring its own separate power source. This capability
gives network administrators centralized power control
for devices such as IP phones and wireless access points,
which translates into greater network availability.
Figure 1 3CBLSF26 Front and Rear Panels
The Switch also supports a pre-standard implementation
of 802.3at, delivering up to 29.6 W per port (measured
at the PD, assuming 100 m Cat 5E cable connected
between the PD and the Switch 2426-PWR), subject to
the maximum power budget available.
Figure 2 3CBLSF26PWR Front and Rear Panels
Gigabit Combo Ports (RJ-45/SFP)
The 2 Gigabit combo ports support fiber Gigabit
Ethernet short-wave (SX) and long-wave (LX) SFP
transceivers in any combination. This offers the flexibility
of using SFP transceivers to provide connectivity
between the Switch and a 1000 Mbps core network.
When an SFP port is in operation, the corresponding
1000BASE-T port is disabled. The 1000 Mbps
connections can only operate in full duplex mode.
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Physical Features
11
Figure 3 3CBLSF50 Front and Rear Panels
téléphonique central privé ou public. Raccorder
seulement connecteurs de données RJ-45, systèmes de
réseaux de téléphonie ou téléphones de réseaux à ces
prises.
Il est possible de raccorder des câbles protégés ou non
protégés avec des jacks protégés ou non protégés à ces
prises de données.
WARNHINWEIS: RJ-45-Porte. Diese Porte sind
geschützte Datensteckdosen. Sie dürfen weder wie
normale traditionelle Telefonsteckdosen noch für die
Verbindung der Einheit mit einem traditionellem
privatem oder öffentlichem Telefonnetzwerk gebraucht
werden. Nur RJ-45-Datenanscluße, Telefonnetzsysteme
or Netztelefone an diese Steckdosen anschließen.
Entweder geschützte oder ungeschützte Buchsen dürfen
an diese Datensteckdosen angeschlossen werden.
Front Panel
The front panel of the Switch contains a series of
indicator lights (LEDs) that help describe the state of
various networking and connection operations.
(1) RJ-45 10/100 Ports
The Switch has 24 or 48 10/100 Mbps auto-negotiating
ports. Each port supports automatic MDI/MDI-X
detection and can be connected to either a 10BASE-T,
or 100BASE-TX device.
WARNING: RJ-45 Ports. These are shielded RJ-45 data
sockets. They cannot be used as standard traditional
telephone sockets, or to connect the unit to a
traditional PBX or public telephone network. Only
connect RJ-45 data connectors, network telephony
systems, or network telephones to these sockets.
Either shielded or unshielded data cables with shielded
or unshielded jacks can be connected to these data
sockets.
For each port, the speed and duplex mode (half duplex
or full duplex for 10BASE-T and 100BASE-TX) are
automatically determined by the capabilities of the
connected device.
The 3CBLSF26PWR Switch also supports IEEE
AVERTISSEMENT: Points d’accès RJ-45. Ceux-ci sont
protégés par des prises de données. Ils ne peuvent pas
être utilisés comme prises de téléphone conventionnelles
standard, ni pour la connection de l’unité à un réseau
802.3af-2003 standard (802.3af) and pre-standard
P802.3at DTE Power via MDI Enhancements (PoE+).
Each port can detect connected 802.3af/at-compliant
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12
INTRODUCING THE BASELINE SWITCH
network devices, such as IP phones or wireless access
points, and automatically supply the required DC power,
up to a maximum of 29.6 W measured at the PD,
assuming 100 m Cat 5E cable connected between the
PD and the Switch 2426-PWR, subject to power being
available from the overall power budget.
(3) Console Port
The console port allows out-of-band access to the
Switch’s built-in Command Line Interface (CLI) that you
can use to reset the Switch to factory defaults, change
the IP address that is assigned to the Switch, set the
admin password, reboot the Switch, or upgrade the
Switch firmware via TFTP.
(2) Gigabit Combo Ports (RJ-45/SFP)
The Gigabit combo ports (RJ-45/Small Form Factor
Pluggable (SFP) ports) are numbered 25 and 26 on
3CBLSF26 and 3CBLSF26PWR, 49 and 50 on 3CBLSF50.
If the link connection on the SFP port is active, the
associated RJ-45 port of the same number is disabled.
To connect to the Console Port, you need the following:
■
The console cable provided in the Switch package,
connected to the console port of the Switch, and to
an available serial (com) port on your computer
■
■
A terminal emulation application capable of VT100
emulation, installed on your computer
The two SFP ports support fiber Gigabit Ethernet
short-wave (SX – 3CSFP91) and long-wave (LX –
3CSFP92) SFP transceivers in any combination. This
offers you the flexibility of using SFP transceivers to
provide connectivity between the Switch and remote
1000 Mbps workgroups or to create a high-capacity
aggregated link backbone connection. The default active
port is the SFP port. The selection of active ports can be
configured via the Web interface.
Configure the com port connection parameters in
your terminal emulator as follows:
■
Com port: Choose based on the computer serial
port to which the console cable is attached (often
COM1)
■
■
■
■
■
Speed (baud): 38400
Data bits: 8
The SFP port supports full duplex mode only.
Stop bits: 1
SFP ports are numbered 25 and 26 on 3CBLSF26 and
3CBLSF26PWR, 49 and 50 on 3CBLSF50. When an SFP
port is active it has priority over the 10/100/1000 port
of the same number. The corresponding 10/100/1000
port is disabled when an SFP link connection is active.
Parity: None
Flow Control: None
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Physical Features
13
(4) 10/100BASE-TX Link/Activity Status LEDs
(5) 10/100BASE-TX Duplex Status LEDs
(3CBLSF26 and 3CBLSF26PWR Only)
The top row (3CBLSF50) and the first (top) and third
rows (3CBLSF26/3CBLSF26PWR) of LEDs, which are
colored yellow or green, show the link, activity and
speed status of the related ports:
The second and fourth row of LEDs, which are colored
yellow, show the duplex status of the related ports:
Table 2 10/100BASE-TX Duplex Status LEDs
Table 1 10/100BASE-TX Link/Activity Status LEDs
Status Meaning
Status Meaning
Yellow
Off
The link is operating in full duplex mode.
Green
Yellow
The link is operating at 100 Mbps.
The link is operating at 10 Mbps.
The link is operating in half duplex mode.
■
The duplex status of the ports on 3CBLSF50
(and 3CBLSF26/3CBLSF26PWR) can also be
monitored from the user interface.
Flashing Packets are being received or transmitted on the
Green port at 100 Mbps.
(6) Gigabit Combo Port and Duplex Status LEDs
Flashing Packets are being received or transmitted on the
Yellow
port at 10 Mbps.
Each Gigabit combo port has two status LEDs which
indicate functions dependant upon whether a
connection has been made to the fixed 1000BASE-T
port, or if an SFP Module has been inserted.
Off
The link has not been established, nothing is
connected to the port, or there is a problem:
■
Check that the attached device is powered
on.
■
Check that the cable is the correct type, is
not faulty, and is inserted correctly.
If these checks do not identify the cause of the
problem, it may be that the unit or the device
connected to the port is faulty. Contact your
supplier for further advice.
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14
INTRODUCING THE BASELINE SWITCH
1000BASE-T Mode
1000BASE-T only operates in full-duplex mode.
10/100BASE-TX can operate in half- or full-duplex
mode.
Table 3 1000BASE-T Link/Activity Status LEDs
Link/Activity Meaning
SFP Mode
Green
The link is operating at 1000 Mbps.
Table 5 SFP Link/Activity Status LEDs
Yellow
The link is operating at 10 or 100 Mbps.
Link/Activity Meaning
Flashing Green
Packets are being received or
transmitted on the port at 1000 Mbps.
Green
The link is operating at 1000 Mbps.
Flashing Yellow Packets are being received or
transmitted on the port at 10 or 100
Mbps.
Flashing Green
Packets are being received or
transmitted on the port at 1000 Mbps.
Off
The link has not been established; Either
nothing is connected to the port, or
there is a problem:
Off
The link has not been established,
nothing is connected to the port, or
there is a problem:
■
■
■
Check that the attached device is
powered on.
■
Check that the attached device is
powered on.
Check that the SFP module is inserted
correctly.
■
Check that the cable is the correct
type, is not faulty, and is inserted
correctly.
Check that the fiber cable is the
correct type, is not faulty, and is
inserted correctly.
If these checks do not identify the cause
of the problem, it may be that the unit
or the device connected to the port is
faulty. Contact your supplier for further
advice.
■
Ensure that the transmit (TX) and
receive (RX) fiber cables are not
swapped. TX on the remote device
must be connected to RX on the local
device; likewise, RX on the remote
device must be connected to TX on
the local device.
Table 4 1000BASE-T SFP/Duplex Status LEDs
SFP/Duplex
Yellow
Meaning
If these checks do not identify the cause
of the problem, it may be that the unit
or the device connected to the port is
faulty. Contact your supplier for further
advice.
The link is operating at full duplex.
Off
The link is operating at half duplex, or
no link is established.
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Physical Features
15
Table 6 SFP Mode SFP/Duplex Status LEDs
Do not apply the pads if you intend to rack mount the
unit.
SFP/Duplex
Meaning
If the unit is to be part of a free-standing stack, apply
the pads to each marked corner area on the underside
of the unit. Place the unit on top of the lower unit,
ensuring that the pads locate within the recesses of the
lower unit.
Green
The SFP module is inserted, regardless of
the link status.
Off
The SFP module is not inserted.
The SFP module will only disable the 1000BASE-T
interface once there is a valid link on the module.
Rear Panel
The rear panel of the Switch contains the power supply
socket.
(7) Power LED
The Power LED shows the power status of the Switch.
(9) Power Socket
Table 7 Power Status LED
The Switch automatically adjusts to the supply voltage.
Only use the power cord that is supplied with the unit.
Status Meaning
Green
Yellow
The unit is powered on and ready for use.
Internal power, POST, or loopback test has
failed. Switch is in fail-safe mode.
Flashing The Switch is undergoing the power up
sequence, or a software upgrade is underway.
Off
The unit is not receiving power.
■
Check that the power cord is connected
correctly.
■
If the unit still does not operate, contact your
supplier.
(8) Self-adhesive Pads
The unit is supplied with four self-adhesive rubber pads.
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16
INTRODUCING THE BASELINE SWITCH
Package Contents
Before installing and using the Switch, verify that your
Switch package is complete. The Switch comes with:
■
■
■
■
■
■
■
One power cord
One console cable
Four standard height, self-adhesive rubber pads
One mounting kit (part number 123193-104)
Installation CD
This User Guide
Warranty flyer
The Switch is powered from the AC supply.
If any of the above items are damaged or missing,
contact your 3Com network supplier immediately.
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INSTALLING THE SWITCH
2
This chapter contains information that you need to
install and set up the Switch. It covers the following
topics:
Information (Translation for this would be: Informações
de Segurança e Regulatórias da Famila de Switches
3Com) incluido no produto. Este manual pode ser
encontrado no CD-ROM incluido com o seu switch ou
no site da 3Com: www.3Com.com
■
■
■
■
■
■
Viktig säkerhets information
Vänligen hänför till säkerhets informationen som är
inkluderad med denna produkt i 3Com Switch Family
Safety and Regulatory Information manualen. Du kan
hitta denna manual på den CD-ROM som följde med
din switch. Du kan även ladda ner denna från 3Com
hemsidan: www.3Com.com
Important Safety Information
Importantes informations de securité
Please refer to the safety information found in the
3Com Switch Family Safety and Regulatory Information
manual included with this product. You can find the
3Com Switch Family Safety and Regulatory Information
manual on the product CD-ROM that was included with
your switch. You can also download the safety manual
from the 3Com Web site: www.3Com.com
Veuillez consulter les informations de securité qui se
trouvent dans le manuel suivant 3Com Switch Family
Safety and Regulatory Information celui-ci est inclu avec
le produit. Vous pouvez trouver ce manuel sur le
CD-ROM qui a été livré avec votre switch. Vous pouvez
aussi le télécharger sur le site Web de 3Com à:
www.3Com.com
Informações Importantes de Segurança
Por favor, antes de manusear o produto, leia
cuidadosamente as instruções de segurança encontradas
no Manual 3Com Switch Family Safety and Regulatory
Wichtige Sicherheits Informationen
Bitte wenden Sie sich an die Sicherheitsinformationen in
der 3Com Switch Family Safety and Regulatory
Information Anleitung die mit diesem Produkt
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18
INSTALLING THE SWITCH
vorhanden ist. Sie können diese Sicherheitsanleitung auf
der CD-ROM finden die im Lieferumfang Ihres
Netzwerkschalters enthalten ist. Sie können die
Anleitungsdatei auch von der 3Com Webseite:
www.3Com.com herunterladen.
Positioning the Switch
The Switch is suitable for use in an office environment
where it can be free-standing or mounted in a standard
19-inch equipment rack.
Importante Avviso di Sicurezza
Alternatively, the Switch can be rack-mounted in a
wiring closet or equipment room. A mounting kit,
containing two mounting brackets and four screws, is
supplied with the Switch.
Vi preghiamo di leggere attentamente e seguire le
istruzioni indicate nel manuale di sicurezza "3Com
Switch Family Safety and Regulatory Information", che
troverete incluso a questo prodotto. Puó trovare il
suddetto manuale nel CD-ROM allegato al Vostro
Switch. Potete anche scaricarlo dal nostro sito:
www.3Com.com
When deciding where to position the Switch, ensure
that:
■
It is accessible and cables can be connected easily.
Information importante de seguridad
■
Cabling is away from sources of electrical noise.
These include lift shafts, microwave ovens, and air
conditioning units. Electromagnetic fields can
interfere with the signals on copper cabling and
introduce errors, therefore slowing down your
network.
Le rogamos lea y siga atentamente las instrucciones
indicadas en el manual de seguridad del 3Com Switch
Family Safety and Regulatory Information, incluido en
este producto. Puede encontrar el manual en el
CD-ROM adjunto a su switch.Alternativamente lo puede
bajar de la web de 3Com: www.3Com.com
■
■
Water or moisture cannot enter the case of the unit.
Istotne informacje dot. bezpieczeństwa
Air flow around the unit and through the vents on
the side of the case is not restricted (3Com
recommends that you provide a minimum of 25 mm
(1 in.) clearance).
Informacje dotyczące bezpieczeństwa są umieszczone
w Instrukcji obsługi 3Com Switch Family, która jest do
łączona do tego produktu. Wraz z prze łącznikiem
znajduje sie instrukcja na płycie CD-ROM. Istnieje
także możliwość pobrania instrukcji bezpośrednio ze
strony internetowej www.3Com.com
■
■
The air is as free from dust as possible.
Temperature operating limits are not likely to be
exceeded. It is recommended that the unit is installed
in a clean, air conditioned environment.
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Rack-Mounting or Free-Standing
19
It is always good practice to wear an anti-static wrist
strap when installing network equipment, connected to
a ground point. If one is not available, try to keep in
contact with a grounded rack and avoid touching the
unit's ports and connectors, if possible. Static discharge
can cause reliability problems in your equipment.
To rack-mount the Switch:
1
2
3
Place the unit the right way up on a hard, flat surface
with the front facing towards you.
Locate a mounting bracket over the mounting holes on
one side of the unit.
Insert the two screws supplied in the mounting kit and
fully tighten with a suitable screwdriver.
Rack-Mounting or Free-Standing
Figure 4 Rack Mounting the Unit
The unit can be mounted in a 19-inch equipment rack
using the mounting kit, or it can be free standing. Do
not place objects on top of the unit or stack.
CAUTION: If installing the Switch in a free-standing
stack of different size Baseline or Superstack 3 units, the
smaller units must be installed above the larger ones.
Do not have a free-standing stack of more than six
units.
Using the Mounting Kit
The Switch is supplied with two mounting brackets and
four screws. These are used for rack mounting the unit.
When mounting the unit, you should take note of the
The Switch is 1U (1.7 inches) high and will fit in a
standard 19-inch rack.
4
5
Repeat steps 2 and 3 for the other side of the unit.
Insert the unit into the 19-inch rack and secure with
suitable screws (not provided).
CAUTION: Disconnect all cables from the unit before
continuing. Remove the self-adhesive pads from the
underside of the unit, if already fitted.
6
Reconnect the cables.
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20
INSTALLING THE SWITCH
Montagesatz Anweisungen
Placing Units On Top of Each Other
Der Switch wird mit zwei Halterungen und vier
Schrauben geliefert. Diese werden für den Einbau in
einem Baugruppenträger benutzt. Bei der Montage der
Baugruppe beachten Sie die Anweisungen aus
If the Switch units are free-standing, up to six units can
be placed one on top of the other. If you are mixing a
variety of Baseline and SuperStack units, the smaller
units must be positioned at the top.
If you are placing Switch units one on top of the other,
you must use the self-adhesive rubber pads supplied.
Apply the pads to the underside of each Switch, sticking
one in the marked area at each corner.
Der Switch ist eine Baueinheit hoch und passt in einen
Standard 19'' (Zoll) Baugruppenträger.
ACHTUNG: Entfernen Sie alle Kabel, bevor Sie
fortsetzen. Entfernen Sie die selbstklebenden Polster
(Füße) von der Unterseite der Baugruppe, falls diese
bereits angebracht sind.
Place the Switch units on top of each other, ensuring
that the pads of the upper unit line up with the recesses
of the lower unit.
1
2
3
Platzieren Sie die Baugruppe aufrecht auf einer harten,
ebenen Fläche mit der Vorderseite Ihnen entgegen.
Supplying Power to the Switch
Ordnen Sie eine der Halterungen über den Löchern an
der Seite der Baugruppe an.
Power problems can be the cause of serious failures and
downtime in your network. Ensure that the power input
to your system is clean and free from sags and surges to
avoid unforeseen network outages. 3Com recommends
that you install power conditioning, especially in areas
prone to blackout, power dips and electrical storms.
Stecken Sie zwei der mitgelieferten Schrauben in die
Löcher und drehen Sie diese mit einem geeigneten
Schraubendreher fest.
4
5
Wiederholen Sie die letzten zwei Schritte auf der
anderen Seite der Baugruppe.
The unit is intended to be grounded. Ensure it is
connected to earth ground during normal use. Installing
proper grounding helps to avoid damage from lightning
and power surges.
Führen Sie die Baugruppe in den 19" (Zoll)
Baugruppenträger ein und sichern Sie die Baugruppe
mit geeigneten Schrauben. (Nicht im Lieferumfang
enthalten).
Before powering on the Switch, verify that the network
cables and the power cable are securely connected.
6
Schließen Sie alle Kabel wieder an.
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Supplying Power to the Switch
21
Table 8 Power LED POST Indications
Status Meaning
CAUTION: The Switch has no ON/OFF switch. The only
way to power on and power off the Switch is by
connecting and disconnecting the power cord. This is
called “power cycling”.
Green
Yellow
The unit is powered on and ready to use.
Power-on self-test or loopback test failed. The
Switch is in fail-safe mode. This can happen if a
port or ports fail when the Switch was powered
on.
To power on the Switch:
1
2
Plug the power cord into the power socket on the rear
page 15 for more information.
Off
The unit is not receiving power:
■
Verify that the power cord is connected cor-
rectly, and then try powering on the Switch
again
Plug the other end of the power cord into a power
outlet.
■
If the Switch still does not operate, contact
your 3Com network supplier
When the Switch is powered on, the Power LED lights
up. If the Power LED does not light up, refer to “(7)
If POST fails, try the following:
■
Power off the Switch, and then power it on again.
Checking for Correct Operation
Check the Power LED and see if POST was
successfully completed.
After you power on the Switch, it automatically
performs a power-on self-test (POST). During POST, the
Power LED on the front panel of the Switch flashes
green.
■
Reset the Switch. See “Resetting to Factory Defaults”
CAUTION: Resetting the Switch to its factory defaults
erases all your settings. You will need to reconfigure the
Switch after you reset it.
When POST is complete, the Power LED turns green. If
the Power LED turns yellow after POST, it means that
POST failed and the Switch has entered fail-safe mode.
If these do not resolve the issue:
The following summarizes the possible colors for the
Power LED after POST.
■
Check the 3Com Knowledgebase for a solution. To
visit the 3Com Knowledgebase Web site, start your
Web browser, and then enter
http://knowledgebase.3Com.com.
■
Contact your 3Com network supplier for assistance.
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22
INSTALLING THE SWITCH
■
■
1000BASE-SX SFP transceiver
Use this transceiver to connect the Switch directly
to a multimode fiber-optic cable.
Using SFP Tranceivers
The following sections describe how to insert an SFP
transceiver into an SFP slot.
1000BASE-LX SFP transceiver
Use this transceiver to connect the Switch directly
to a single mode fiber-optic cable or to multi-
mode fiber using a conditioned launch cable.
SFP transceivers are hot-insertable and hot-swappable.
You can remove them from and insert them into any
SFP port without having to power down the Switch.
If the SFP transceiver is faulty, it will not operate within
Approved SFP Transceivers
To activate the SFP port:
The following list of approved SFP transceivers is correct
at the time of publication:
1
Hold the transceiver so that the fiber connector is
toward you and the product label is visible, as shown in
Figure 5. Ensure the wire release lever is closed (in the
upright position).
■
3CSFP91 SFP (SX)
3CSFP92 SFP (LX)
■
To access the latest list of approved SFP transceivers for
the Switch on the 3Com Web site, enter this URL into
your Internet browser:
http://www.3Com.com
3Com recommends using 3Com SFPs in the Switch. If
you insert an SFP transceiver that is not supported, the
Switch will not recognize it.
Inserting an SFP Transceiver
To be recognized as valid, the SFP transceiver must have
the following characteristics:
■
1000BASE-SX or 1000BASE-LX media type:
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Performing Spot Checks
23
Figure 5 Inserting an SFP Transceiver
6
7
Connect the other end of the cable to a device fitted
with an appropriate Gigabit Ethernet connection.
Check the Module Active LEDs on the front of the
Switch to ensure that the SFP transceiver is operating
correctly.
Removing an SFP Transceiver
Removing an SFP transceiver does not require powering
off the Switch.
To remove an SFP transceiver:
1
2
Disconnect the cable from the transceiver.
Move the wire release lever downwards until it is
pointing toward you.
3
Pull the wire release lever toward you to release the
catch mechanism.
2
Gently slide the transceiver into the SFP slot until it
clicks into place.
The SFP transceiver should slide out easily.
CAUTION: SFP transceivers are keyed and can be
properly inserted only one way. If the transceiver does
not click when you insert it, remove it, turn it over, and
reinsert it.
Performing Spot Checks
At frequent intervals, you should visually check the
Switch. Regular checks can give you an early warning of
a possible failure; any problems can then be attended to
when there will be least effect on users.
3
4
5
Remove the plastic protective cover, if fitted.
Connect the fiber cable.
3Com recommends periodically checking the items listed
Attach a male duplex LC connector on the network
cable into the duplex LC connector on the transceiver.
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24
INSTALLING THE SWITCH
Table 9 Items to Check
Cabling
Check that all external cabling connec-
tions are secure and that no cables are
pulled taut.
Cooling fan
Where possible, check that the cooling fan
(3CBLSF26PWR is operating by listening to the unit. The
only)
fan is fitted near to the front right hand
side of the unit (when viewed from the
front).
If you experience any problems operating the Switch,
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CONNECTING TO THE WEB INTERFACE
3
The Switch has a built-in Web interface that you can
use to set the admin password, change the IP address
that is assigned to the Switch, and configure its
advanced settings.
■
■
Mozilla Firefox (V2.0 and subsequent releases)
Netscape (V7.0 and subsequent releases)
Requirements for Accessing the Web
Interface
If you only want the Switch to function as a basic layer
2 switch, you do not need to access the Web interface
and configure the Switch.
To connect to the Web interface, you need one or more
of the following:
This chapter provides information on how to gain
access to the Web interface using the Discovery applica-
tion. It also introduces the menu items and buttons that
are available on the Web interface.
■
■
The console cable that was supplied with your
Switch.
The 3Com Switch Detect application, that is
included on the CD-ROM that was supplied with
your Switch.
The following topics are covered:
■
■
■
■
■
■
A computer that is connected to the Switch and that
has a Web browser.
Using the Console Command Line
Interface (CLI)
In order to connect to the Web interface of the Switch,
it is necessary to know its IP address. The IP addressing
mode of the Switch is covered in Section 4
The Switch support the following browsers:
■
Microsoft Internet Explorer (V6.0 and subsequent
releases)
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26
CHAPTER 3: CONNECTING TO THE WEB INTERFACE
switch will try to obtain an IP address from a DHCP
server (assuming the Switch is connected into a
network where one is available). If there is no DHCP
server available, or you are configuring the Switch in a
stand-alone mode, the Switch will allocate itself an
“Auto IP” address of 169.254.xx.yy. These last two
numbers are taken from the last two numbers of the
MAC address. This default IP address can be seen on
the label attached to the top cover of your Switch.
■
Default gateway
The Switch will take up to two minutes to try to obtain
an IP address. During this time the above addresses will
be displayed as 0.0.0.0. Only after this period if the
Switch has not been able to obtain an IP address, will
Figure 6 CLI Summary with Default IP Address
In order to see the IP address that has been allocated to
the Switch by a DHCP server, or to manually assign one,
it is necessary to use the console interface. The CLI
Connect the supplied console cable to the console
socket, located on the front panel of the Switch. This
should be connected to a COM port on your PC (or
MAC). Configure a suitable terminal emulator
application for 38,400 baud, 8 data bits, no parity and
1 stop bit. Flow control should be disabled.
When the Switch has completed its power up sequence
and is ready to operate, pressing the carridge return on
your keyboard will result in a prompt on the console
interface. Enter the username admin with no password.
You will now be presented with a short menu of
commands.
If the Switch has obtained a DHCP lease, the IP address
will be shown. Make a note of it for use when you are
ready to use your Web browser to connect to the
Switch.
Enter summary to display the basic settings for the
If the 169.254.xx.yy address is not suitable, you can
change to a manually assigned IP address by entering
ipsetup manual and then entering the required values
after the prompts. Enter 1 in the VLAN ID. Enter
Switch. Included in this information is:
■
The IP address,
■
Subnet mask and
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Logging On to the Web Interface
27
what you should expect to see.
IP address. After the Web interface loads in your Web
browser, the first page that appears is the logon screen.
On this screen, you need to enter the administration
user name and password to gain access to the Web
interface.
Note that when a manual IP address has been assigned
it will not revert back to the DHCP mode on subsequent
re-boots.
You will now know either the DHCP or manual IP
address and you can now move on to using the Web
interface.
The browser’s address bar also displays the IP address
that the Switch is currently using.
Figure 8 Logon Dialog Box
Figure 7 CLI Summary with Assigned IP Address
To log on to the Web interface:
In User name, type admin.
Leave the Password field blank.
Click OK.
1
2
3
Logging On to the Web Interface
Using the IP address you have obtained in the previous
section, enter this into the URL field of your preferred
Web browser. There is no need to add http:// before the
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28
CHAPTER 3: CONNECTING TO THE WEB INTERFACE
Figure 10 3CBLSF26PWR Switch Screen Layout
Navigating the Web Interface
Sub-Menu Tabs
The Web interface has been designed to enable you to
easily perform advanced configuration tasks and view
information about the Switch.
Menu
The menu is located on the left side of the Web
interface. When you click an item on the menu, the
related screen appears in the main part of the interface.
Some menu items will give you sub-menu tabs to
choose from.
Figure 9 3CBLSF26 Switch Screen Layout
Sub-Menu Tabs
Menu
System Information
Menu
System Information
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Navigating the Web Interface
29
Figure 11 3CBLSF50 Switch Screen Layout LWP
Table 1 lists the available items on the menu.
Sub-Menu Tabs
Table 1 Available Menu Items
Menu Item
Description
Device Summary
Contains tabs that allow you to:
■
Provide a summary of the Switch’s basic
settings and versions of current
components.
■
■
Set the polling interval in seconds.
Display the description for each color
coded port.
Save Configuration
Administration
IP Setup
Saves the Switch’s configuration.
Manages the device.
Allows you to setup, modify, or view the IP
configuration parameters.
Backup & Restore
Allows you to backup and restore the
Switch’s configuration.
Firmware Upgrade
Reset
Upgrades the current firmware via HTTP.
Menu
System Information
Performs a system reboot and resets the
Switch to factory default settings.
System Access
Contains tabs that allow you to:
■
■
■
■
Display user summary information.
Create a new user.
Modify existing users.
Remove existing users.
System Name
System Time
Sets a name, location, and contact
information for the Switch
Allows you to set the system time.
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30
CHAPTER 3: CONNECTING TO THE WEB INTERFACE
Menu Item
SNMP
Description
Menu Item
Description
Contains tabs that allow you to:
VoIP Trafic Setting Contains tabs that allow you to:
■
■
■
Set SNMP Agent Status.
Add community strings.
Remove community strings.
■
Display a summary of Voice VLAN
settings.
■
■
■
■
■
Enable Voice VLANs.
Configure Voice VLAN port settings.
Display Voice VLAN port details.
Display the OUI list.
Device
Configures the device.
VLAN
Contains tabs that allow you to:
Modify the OUI list.
■
■
■
■
■
■
■
Create a VLAN.
Modify a VLAN.
PoE
Contains tabs that allow you to:
Modify VLAN membership for a port.
Rename a VLAN.
■
Display PoE summary.
Configure PoE settings.
■
Remove a VLAN.
Display VLAN membership for a port.
Display VLAN information.
Port
Configures the ports.
Administration
Contains tabs that allow you to:
■
Display selected port information for the
entire Switch.
Spanning Tree
Contains tabs that allow you to:
■
Display spanning tree information for
every port.
■
■
Display individual port information.
Modify the port settings.
■
■
Modify spanning tree global settings.
Modify spanning tree settings for ports.
Link Aggregation
Contains tabs that allow you to:
■
■
■
■
Display link aggregation summary.
Create an aggregation group.
Modify the port memberships.
Remove an aggregation group.
IGMP Snooping &
Query
Enables or disables IGMP snooping and
IGMP query mode.
Broadcast Storm
Allows you to enable and configure, or
disable rate limiting.
Statistics
Display statistics for a selected port.
Configures security settings.
QoS
Configures Quality of Service.
Security
Radius Client
Configures Radius Client settings and sets
authentication parameters.
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Accessing the Switch using the 3Com Switch Detect Application
31
Port Status
Menu Item
Description
There is an image of the Switch’s front panel in the
Device View page, which indicates ports that are
currently in use.
802.1X Settings
Contains tabs that allow you to:
■
Display an authentication summary for all
ports.
■
Configure system authentication settings.
To configure a port, click the port on the image for the
following configuration options:
Monitoring
Display Switch monitoring information.
Address Table
Displays MAC address table information for
ports and VLANs.
■
■
■
View detailed port information
Configure the port settings
View port statistics
Port Mirroring
Contains tabs that allow you to:
■
■
Displays and modifies the current port
traffic monitoring configuration.
Removes port traffic monitoring settings.
Cable Diagnostics
Contains tabs that allow you to:
Accessing the Switch using the 3Com
Switch Detect Application
■
Display cable diagnostics information for
all ports.
■
Perform cable diagnostics for selectd
ports.
The 3Com Switch Detect application works by automat-
ically locating your Switch, establishing what IP address
it is using and then launching your default web browser
to connect directly to it.
Help
Displays 3Com contact information and
describes how to use the online help system.
Log Out
Allows you to securely log off the Web
interface.
The application will only locate your Switch if it is on the
same subnet as the PC on which the application is run-
ning. It will not be able to locate your Switch if there is
a router between your PC and the Switch. The applica-
tion is only designed to run on Windows operating sys-
tems.
Buttons
Depending on the screen that is currently displayed, the
following buttons may appear:
■
Apply – Click to save and apply any changes that
you have made
■
Cancel – Click to discard any unsaved changes
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32
CHAPTER 3: CONNECTING TO THE WEB INTERFACE
Figure 12 The 3Com Switch Detect Welcome Screen
Running the 3Com Switch Detect Application
The 3Com Baseline Switch CD-ROM contains, in addi-
tion to the documentation, the 3Com Switch Detect
Application.
To use 3Com Switch Detect to connect to the Web
interface of your Switch, do the following:
1
On the computer that is connected to your Switch
(either directly or on a network that is on the same sub-
net), insert the CD-ROM into its CD drive.
If you have autorun enabled, you will be presented with
a menu showing the contents of the CD-ROM. Select
the 3Com Detect Application link to install the utility.
Follow the onscreen instructions.
If the auto-run program does not start, you should
browse to your CD-ROM drive, go to the /switch detect
directory and double click on setup.exe. Follow the
prompts that will take you through the installation pro-
cess.
2
3
If the computer has multiple network adapters, select
the adapter that connects the computer to the network
or Switch, click "Next."
Once installed, the 3Com Switch Detect Application can
be accessed from the Windows Start/Programs list.
You will then be offered the choice of searching the
same subnet that your PC is on for a connected switch
(default), or specifying an IP range. Note that specifying
a large range may take some time for the search to
complete.
When the 3Com Detect application starts, you will be
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Accessing the Switch using the 3Com Switch Detect Application
33
Figure 13 The 3Com Switch Detect Search Screen
Figure 14 The 3Com Switch Detect Discovered Devices
4
Once your Switch or Switches have been located, you
switch to which you want to connect and click on
"Open." Your default Web browser will open and con-
nect to the home page of the Switch.
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CHAPTER 3: CONNECTING TO THE WEB INTERFACE
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CONFIGURING THE SWITCH FROM THE WEB
INTERFACE
4
This chapter provides information on how to configure
the Switch’s advanced features. Topics include:
■
Upgrade the firmware
■
■
■
■
■
■
Device Summary Information
The Device Summary screen, which automatically loads
after you log on to the Web interface, provides a
snapshot of the Switch’s basic settings and versions of
current components.
Click Device Summary on the menu. A screen appears
with three tabs that include:
■
■
■
Device View
Polling Interval
Color Key
Configuration Overview
The Switch is shipped ready for use. If you only want
the Switch to function as a basic Layer 2 switch, you do
not need to access the Web interface and configure the
Switch.
You only need to access the Web interface if you want
to:
■
Set the administration password to the Web
interface
■
■
Assign an IP address to the Switch
Configure the Switch’s advanced features
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36
CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
Device View
Polling Interval
Contains fields that display the system, switch, and
management information to identify the Switch. The
fields include Product Description, System Location,
System Contact, Serial Number, Product 3C Number,
MAC Address, Software Version, Unit Uptime,
Bootroom Version, and Hardware Version.
Enter the interval in seconds you would like the Switch
to refresh. (Range: 10 to 180 seconds; 0 to disable
polling).
Figure 16 Polling Interval
Figure 15 Device View
To set the polling interval:
1
2
Click the Device Summary menu, then click Polling
Interval tab.
Enter a number between 10 to 180 seconds for the
polling interval. Enter a 0 to disable polling.
If you request for technical assistance from 3Com
Support, you may be asked to print out the information
on this screen.
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Administration Settings
37
■
■
■
System Name
System Time
SNMP
Color Key
Description of the color coding.
Figure 17 Color Key
Modifying the IP Address Settings
To enable devices on the network to communicate with
the Switch, you need to assign an IP address to it —
either by DHCP or by assigning a static IP address.
To enable devices on the network to communicate with
the Switch, the Switch will either obtain an IP address
from a DHCP server (default operation), or if this is not
successful, will allocate itself an IP address. You can use
the console interface or the 3Com Switch Detect
application (with certain limitations) to see what IP
address the Switch will use.
Automatic IP Configuration
When you power on the Switch for the first time, it will,
for a period of approximately 2 minutes, automatically
request an IP address from a DHCP server. This is
referred to as auto mode. If at the end of this period
there has been no response from the DHCP server (if
one is present in the network), it will allocate itself an
Auto IP address.
Administration Settings
The Administration menu includes eight administration
items:
■
■
■
■
■
IP Setup
Backup & Restore
Firmware Upgrade
Reset
The Switch will use the default IP address 169.254.x.y,
where x and y are the last two bytes of its MAC address.
System Access
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38
CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
To determine the exact IP address that the Switch
assigns to itself during auto IP configuration, refer to
the label on the top cover of the Switch. This label
contains the MAC address and default IP address of the
Switch.
If you change the IP address of the Switch it will be
necessary to use this new address in the web browser in
order to access the Switch at it's new IP address.
Figure 18 IP Setup Screen
For example, if the MAC address is 08004E000102, the
IP address would be 169.254.1.2. The Switch also
assigns the subnet mask 255.255.0.0 (default class B
mask) to itself.
3Com recommends assigning an IP address to the
Switch (either by using DHCP or a static IP address) to
ensure successful communication between the Switch
and other network devices.
IP Setup
Backup Configuration
Use these settings to change the IP addressing mode
and the IP address of the Switch.
To save the Switch configuration settings:
1
Click Administration, then Backup & Restore on the
menu. The Backup Configuration screen appears.
Be default, the IP address configuration method will be
DHCP. In this mode the Switch will obtain an IP address
from a DHCP server. The IP address, subnet mask and
default gateway details that have been allocated to the
Switch can be seen, but they cannot be altered (greyed
out).
Figure 19 Backup Configuration
To assign a manual IP address, select the manual button
and enter your specific details then click on Apply.
2
Click OK. You will be prompted to provide a location
where the configuration file will be saved.
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Administration Settings
39
Figure 21 Upgrade Screen
Restore Configuration
To reload configuration settings that you previously
saved to a file:
1
Click Administration, Backup & Restore, then the
Restore Configuration tab. The Restore Configuration
screen appears.
Figure 20 Restore Configuration
1
2
Click Administration, then Firmware Upgrade on the
menu. The Firmware Upgrade screen appears.
Once you have downloaded the firmware, use the
Browse button to locate the file on your computer, and
then click OK.
2
3
Click Browse to locate the backup file on your computer
to restore the configuration settings.
You may need to change the file type in the dialog box
displayed by your Web browser to *.* to be able to see
the file.
Click OK to copy the configuration back to the Switch.
For security purposes, restoring the configuration does
not change the password.
The file will be copied to the Switch, and once this has
completed, the Switch will restart. Although the
upgrade process has been designed to preserve your
configuration settings, 3Com recommends that you
make a backup of the configuration beforehand, in
case the upgrade process fails for any reason (for
example, the connection between the computer and
the Switch is lost while the new firmware is being
copied to the Switch).
Firmware Upgrade
The Upgrade facility allows you to install on the Switch
any new releases of system firmware that 3Com may
make available.
Newer versions of firmware can be downloaded via
HTTP and copied to the Switch; the Switch will restart
and apply the newer system firmware version.
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40
CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
A progress screen displays while the upgrade is taking
place.
Initialize, discard IP setting
Clicking on Initialize, discard IP setting will return the
Switch to the factory default configuration, including
the IP address mode which shall be returned to DHCP
enabled. The Switch shall be reset.
The upgrade procedure can take a few minutes, and is
complete when the progress bar has finished running
and the Power LED has stopped flashing and is
permanently green.
Selecting any of the 3 options above will result in the
Switch resetting. During this period any users
connected to the Switch will lose connectivity to the
rest of the network.
CAUTION: Do not interrupt power to the Switch during
the upgrade procedure. If you do, the firmware may be
corrupted and the Switch may not start up properly
afterwards.
System Access
Reset
Click Administration, then System Access on the menu.
A screen appears with four system access tabs:
To reset the Switch to factory default settings, click
Administration, then Reset on the menu.
■
■
■
■
Summary
Setup
Reboot
Modify
Remove
Clicking on Reboot will reset the Switch (the equivalent
of power cycling it). No configuration settings will be
lost.
To prevent unauthorized users from accessing the Web
interface and modifying the Switch’s settings, the
interface is password-protected.
Initialize, keep IP setting
Clicking on Initialize, keep IP setting will return the
Switch to the factory default configuration (i.e. any
configuration parameters you may have set up will be
deleted). However, the IP address of the switch will not
be altered, meaning you will not have to go through
the process of establishing what IP address the Switch
has taken. The Switch shall be reset.
The default admin account settings are:
■
User name – admin
■
Password – blank (no password)
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Administration Settings
41
To ensure that unauthorized users do not access the
Web interface, 3Com recommends that you set an
admin password when you first configure the Switch.
Create User
This page allows you to create a user and define the
access level and password for that user.
Even if you do not intend to actively manage the
Switch, 3Com recommends that you change the
password to prevent unauthorized access to your
network.
Figure 23 Create User Screen
The password can be up to 8 characters long and is
case-sensitive.
If you forget the administration password after you set
for information on how to regain access to the Web
interface.
User Summary
Displays the list of user names and their access level.
Figure 22 User Summary Screen
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42
CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
Modify User
Remove User
This page allows you to modify a user’s access level and
password.
To remove a user from the Switch, click on the user
name, then click Remove.
Figure 24 Modify User Screen
Figure 25 Remove User Screen
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Administration Settings
43
System Name
SNMP
Use these user definable fields to help identify your
switch.
Simple Network Management Protocol (SNMP) is a
communication protocol designed specifically for
managing devices on a network. Equipment commonly
managed with SNMP includes switches, routers and
host computers. SNMP is typically used to configure
these devices for proper operation in a network
environment, as well as to monitor them to evaluate
performance or detect potential problems.
Figure 26 System Name Screen
Click Administration, then SNMP on the menu. A screen
appears with three tabs:
■
■
■
Setup
SNMP Add
SNMP Remove
System Time
Setup
Click Administration, then System Time on the menu.
This screen allows you to set the system time. You can
set the Year, Month, Day, Hours, Minutes, and Seconds.
Enable or disable the SNMP Agent Status.
Figure 28 SNMP Setup Screen
Figure 27 System Time Screen
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CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
SNMP Add
SNMP Remove
This page allows you to create community strings for
management access.
This page allows you to remove community strings.
Figure 30 SNMP Remove Screen
Figure 29 SNMP Add Screen
Configuring VLANs
A virtual LAN (VLAN) is a collection of network nodes
that share the same collision domain, regardless of their
physical location or connection point in the network. A
VLAN serves as a logical workgroup with no physical
barriers, and allows users to share information and
resources as though located on the same LAN.
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Configuring VLANs
45
You can use the Switch to create VLANs to organize any
group of ports into separate broadcast domains. VLANs
confine broadcast traffic to the originating group and
help eliminate broadcast storms in large networks. This
also provides for a more secure and cleaner network
environment.
VLAN
Click Device, then VLAN on the menu. A screen appears
with seven tabs that include:
■
■
■
■
■
■
■
Setup
Modify VLAN
Modify Port
Rename
You can create up to 256 VLANs, add specific ports to a
chosen VLAN (so that the port can only communicate
with other ports on the VLAN), or configure a port
make it a member of multiple or even all VLANs.
Remove
Port Detail
VLAN Detail
Communication between different VLANs can only take
place if they are all connected to a router or layer 3
switch.
The Device menu includes five (or six for 3CBLS26PWR
only) items:
■
■
■
■
■
■
VLAN
Spanning Tree
IGMP Snooping and Query
Broadcast Storm
QoS
PoE
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CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
interface. If this happens, you will need to reset the
Switch to factory settings.
Setup
Use the Setup screen to create VLANs on the Switch. To
propagate information about VLAN groups used on this
Switch to external devices, you must specify a VLAN ID
for each VLAN.
By default, all ports belong to VLAN 1 as untagged
members. However, they can belong to multiple VLANs
as tagged members. Also, newly created VLANs will
initially have no ports associated with them.
Figure 31 Setup Screen
Modify VLAN
Use the Modify VLAN screen to change the VLAN to
which a port belongs, and configure the port to
communicate with all other VLANs, or a selected VLAN.
Figure 32 Modify VLAN Screen
Available options on the Setup screen include:
■
VLAN ID – ID of configured VLAN (1-4094, no
leading zeroes)
For examples on setting up VLANs, refer to “Sample
CAUTION: At least one port must always be an
untagged member of VLAN 1 (the management VLAN).
If you choose to connect all ports to VLANs other than
VLAN 1, you will no longer be able to access the Web
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Configuring VLANs
47
1
Enter a set of VLANs or select all VLANs to configure,
1
Select a membership use. Available options for each
then click Select.
port include (only one option can be associated with a
single port):
2
3
From the drop down menu, select a VLAN to modify.
■
■
■
Not a member
Tagged
Select a membership use. Available options for each
port include (only one option can be associated with a
single port):
Untagged
■
■
■
Tagged
2
3
Select a port to associate with the membership.
Untagged
Not a Member
Enter a VLAN to apply these changes to, then click
Apply.
4
Select ports to associate with the membership, then
click Apply.
Rename
Use the Rename screen to change the name of a VLAN.
Modify Port
Figure 34 Rename Screen
Use the Modify Port screen to modify the VLAN
membership of a port.
Figure 33 Modify Port Screen
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CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
1
2
Enter a set of VLANs or select all VLANs to add to the
rename list, then click Select.
Port Detail
Choose a port to display the tagged and untagged
VLAN memberships it is associated with.
From the list of selected VLANs, choose a VLAN to
rename. Enter a new VLAN name and click Apply.
Figure 36 Port Detail Screen
Remove
Use the Remove screen to remove a VLAN.
Figure 35 Remove Screen
1
2
Enter a set of VLANs or select all VLANs to add to the
remove list, then click Select.
From the list of selected VLANs choose a VLAN to
remove, or click the Select All button to select all the
VLANs. Click Remove to remove the VLAN.
To delete a VLAN, all port members must first be
removed from the VLAN.
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Configuring VLANs
49
■
When a port receives a tagged frame with a VLAN
ID and the port is a member (untagged or tagged) of
that VLAN, the frame is accepted. Otherwise the if
the port is not a member of that VLAN, the frame is
discarded.
VLAN Detail
Use this screen to display detailed VLAN information.
1
2
Enter a set of VLANs or select all VLANs to add to the
details list, then click Select.
From the drop down menu, choose a VLAN to display
the associated tagged and untagged member ports.
■
When a port receives an untagged frame and the
port is an untagged member of a VLAN, the frame is
accepted and assigned to that VLAN ID. Otherwise if
the port is not an untagged member of any VLAN,
the frame is discarded.
Figure 37 VLAN Detail Screen
The Switch will only forward a frame to ports that are
members (tagged or untagged) of the VLAN to which
the frame is assigned. If the port is an untagged
member, the egress frame will be stripped of the VLAN
tag and forwarded as untagged. However, if the port is
a tagged member, the egress frame is forwarded as
tagged.
Sample VLAN Configurations
To illustrate how you can segment network devices that
are connected to the Switch, the following sample
configurations are provided.
Forwarding Tagged/Untagged Frames
Each port on the Switch is capable of passing tagged or
untagged frames.
The following describes how the Switch will handle
tagged and untagged frames.
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50
CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
3
Click Apply.
Setting Up Two VLANs on the Same Switch
Figure 38 illustrates how you can set up a simple VLAN
on the Switch using desktop connections.
Ports 1, 3, and 26 now belong to VLAN2, and will not
communicate with any other ports, unless you add
other ports to the VLAN or change the port
configuration.
Figure 38 Desktop VLAN Configuration
Endstations
in VLAN 1
Endstations
in VLAN 2
Setting Up VLAN Across Two Switches
This example explains how you can set up a VLAN
across two Switches using Tagged ports. This enables
ports that are members of the same VLAN (but are on
different switches) to communicate, provided that a
port on each Switch is set to Tagged, and that these
ports are connected.
Baseline Switch
Server Server
in VLAN 1 in VLAN 2
If you want to add ports 1, 3, and 26 to VLAN2 (as
shown in Figure 38), so that the ports on the default
VLAN1 and the ports on VLAN2 cannot communicate
with each other, do the following:
1
2
Create a new VLAN and set the VLAN ID to 2. Refer to
“Setup” for instructions. VLAN1 is the default VLAN
and already exists.
Set ports 1, 3, and 26 to associate with the Untagged
membership in VLAN2.
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Configuring VLANs
51
Figure 39 Tagged VLAN Configuration
2
3
4
On Switch 1, set the ports that you want to be part of
VLAN2 to Untagged. Set one port (for example, port
16) to Tagged.
Click Apply.
On Switch 2, set the ports that you want to be part of
VLAN2 to Untagged. Set one port (for example, port 8)
to Tagged.
Click Apply.
Connect the Tagged port on Switch 1 (in this example,
port 16) to the Tagged port on Switch 2 (in this
example, port 8).
Those ports on Switch 1 that are members of VLAN2
can now communicate with those ports on Switch 2
that are members of VLAN2.
Spanning Tree
Spanning tree is a bridge-based system for providing
fault tolerance on networks and can be used to detect
and disable network loops. The spanning tree ensures
that the optimal path is maintained between spanning
tree-compliant networked devices by:
following:
■
Disabling redundant paths when the main paths are
operational.
1
Create VLAN2 on both Switch 1 and Switch 2. You
need not create VLAN1 since it exists by default.
■
Enabling redundant paths if the main paths fail.
Spanning tree uses a distributed algorithm to select a
bridging device that serves as the root of the spanning
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CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
tree network. The bridging device, known as the Root
Bridge, generates bridge protocol data units (BPDUs) on
all ports at a regular interval, known as the Hello Time.
All other spanning tree-compliant devices on the
network have a designated Root Port. This is the Port
nearest the Root Bridge and it is used for receiving the
BPDUs initiated by the Root Bridge. If a bridge does not
get a Hello BPDU after a predetermined interval, the
bridge assumes that the link to the Root Bridge is
down. This bridge will then initiate negotiations with
other bridges to reconfigure the network to reestablish
a valid network topology.
Summary
Use the Summary tab to display Status, Edged Port, Link
Type, Path Cost, State, or Port Priority for all the ports.
Figure 40 Spanning Tree Summary Screen
After all the bridges on the network have determined
the configuration of their ports, each bridge only
forwards traffic between the Root Port and the ports
that are the Designated Bridge Ports for each network
segment. All other ports are blocked, which means that
they are prevented from forwarding traffic.
Three tabs are available on the Spanning Tree page:
■
■
■
Summary
Setup
Port Setup
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Configuring VLANs
53
that the optimal path is maintained between spanning
tree-compliant networked devices by:
Setup
To use spanning tree, use the Setup tab and choose
Enabled from the State drop down menu, fill in the
setup parameters, and click Apply.
■
Disabling redundant paths when the main paths are
operational.
■
Enabling redundant paths if the main paths fail.
Figure 41 Spanning Tree Setup Screen
Spanning tree uses a distributed algorithm to select a
bridging device that serves as the root of the spanning
tree network. The bridging device, known as the Root
Bridge, generates BPDUs (Bridge Protocol Data Units) on
all ports at a regular interval, known as the Hello Time.
All other spanning tree-compliant devices on the
network have a designated Root Port. This is the Port
nearest the Root Bridge and it is used for receiving the
BPDUs initiated by the Root Bridge. If a bridge does not
get a Hello BPDU after a predetermined interval, the
bridge assumes that the link to the Root Bridge is down.
This bridge will then initiate negotiations with other
bridges to reconfigure the network to re-establish a
valid network topology.
After all the bridges on the network have determined
the configuration of their ports, each bridge only
forwards traffic between the Root Port and the ports
that are the Designated Bridge Ports for each network
segment. All other ports are blocked, which means that
they are prevented from forwarding traffic.
Port Setup
This administrative tool supports the configuration of
the Switch to forward, or block and discard 802.1D
spanning tree BPDU packets.
Spanning tree is a bridge-based system for providing
fault tolerance on networks and can be used to detect
and disable network loops. The spanning tree ensures
Use the Port Setup tab to configure the spanning tree
settings for each port. The following options are
available:
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54
CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
■
Status – Enables and disables spanning tree for the
port.
IGMP Snooping & Query
This switch uses IGMP (Internet Group Management
■
■
■
Edged Port – Enables and disables edged port for
the port.
Protocol) to query for any attached hosts that want to
receive a specific multicast service. It identifies the ports
containing hosts requesting to join the service and
sends data out to those ports only. It then propagates
the service request up to any neighboring multicast
switch/router to ensure that it will continue to receive
the multicast service. This procedure is called multicast
filtering.
Link Type – Choose between Point-to-Point, Shared,
or Auto for the link type.
Path Cost – The path cost is used to determine the
best path between devices. The path cost method is
used to determine the range of values that can be
assigned to each interface.
The purpose of IP multicast filtering is to optimize a
switched network’s performance, so multicast packets
will only be forwarded to those ports containing
multicast group hosts or multicast routers/switches,
instead of flooding traffic to all ports in the subnet
(VLAN).
■
Port Priority – Used in selecting the root device, root
port, and designated port. The device with the
highest priority becomes the STA root device.
However, if all devices have the same priority, the
device with the lowest MAC address will then
become the root device.
Choose Enabled or Disabled from the IGMP Snooping
Mode drop down menu.
If you modify any of these settings, click Apply to save
your changes.
Figure 43 IGMP Snooping & Query Setup Screen
Figure 42 Spanning Tree Port Setup Screen
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Configuring VLANs
55
Summary
Broadcast Storm
A broadcast storm occurs when an incorrect packet is
Use the Summary tab to display the broadcast mode
sent out on a network, causing most hosts to respond
all at once and typically with wrong answers that start
the process over again. Broadcast storms use substantial
network bandwidth and may cause network time-outs.
and rate for all the ports.
Figure 44 Broadcast Storm Summary Screen
Two tabs are available on the Broadcast Storm page:
■
Summary
Modify
■
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56
CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
■
■
■
■
■
Setup
Modify
Port Setup
Port Detail
OUI Summary
OUI Modify
Use the Modify tab to set the Switch’s broadcast storm
control and threshold limits.
The settings include:
■
Status – Enables and disables broadcast storm
control.
Summary
■
Packet Rate Threshold – Sets the broadcast storm
threshold (64 to 1000000 kilobits per second).
Use the Summary tab to display the Voice VLAN
settings for all the ports.
Figure 45 Broadcast Storm Modify Screen
Figure 46 QoS VoIP Summary Screen
QoS VoIP Traffic Settings
Using the Web interface, you can configure the Voice
over Internet Protocol (VoIP) settings.
The QoS VoIP Traffic Setting menu includes six tabs:
■
Summary
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Configuring VLANs
57
■
Voice VLAN Port Security – Enable or disable the
security.
Setup
Use the Setup tab to configure the global settings for
the Voice VLAN. The following options are available:
To configure the Voice VLAN settings for ports:
Select Voice VLAN Mode, and Security settings.
1
2
■
■
■
Voice VLAN Status – Enable or disable Voice VLAN
for the switch.
Select the ports you would like to apply these settings
to.
Voice VLAN ID – Input the Voice VLAN ID for the
switch.
3
Click Apply.
Voice VLAN Aging Time – Input the aging time.
Figure 48 QoS Port Setup Screen
You must first create a VLAN from the VLAN Setup page
before you can assign and configure a Voice VLAN.
Figure 47 QoS VoIP Setup Screen
Port Setup
Use the Port Setup tab to configure the port or trunk
setting for Voice VLAN. The following options are
available:
■
Voice VLAN Port Mode– Select between None,
Manual, or Auto.
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CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
Port Detail
OUI Add
Use the Port Detail tab to display the Voice VLAN
information for selected ports.
Use the OUI Modify tab to add to the list of
Organizational Unique Identifier. The following options
are available:
Figure 49 QoS Port Detail Screen
■
Telephony OUI – Input a new company identifier to
add to the list.
■
Description – Input a description for the new
company identifier.
To add to the OUI list:
1
2
Enter a Telephony OUI and description.
Click Add.
To remove an OUI from the list:
1
2
Select a Telephony OUI from the list.
OUI Summary
Click Remove.
Use the OUI Summary tab to display the list of
Organizational Unique Identifier for a company and
their description.
Figure 50 QoS OUI Summary Screen
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Configuring VLANs
59
Figure 51 QoS OUI Modify Screen
Summary
Use the Summary tab to display the device and port PoE
settings.
Figure 52 PoE Summary Screen
PoE (3CBLSF26-PWR only)
Click Device, then PoE on the menu. A screen appears
with two tabs that include:
Setup
■
Summary
Setup
Use the Setup tab to configure the device and port PoE
settings. The settings include:
■
■
PoE State – Enables and disables PoE for the switch.
■
Auto – Allows the switch to manage the PoE budget
for selected ports.
■
Guarantee – Manually input the maximum power
you would like a connected device to receive. Note
that this does not mean that the port has priority
over other ports. (Range: 3 - 29.6 Watts)
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CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
Note that the Switch operates a port based PoE priority
scheme. Lower numbered ports have priority over
higher numbered ones. If you need to ensure that
critical devices get power where you are likely to exceed
the total power budget available, you should connect
these to low port numbers and ensure these ports have
their Guarantee power set.
Configuring Port Settings
Using the Web interface, you can configure the
speed/duplex, flow control, and link aggregation
settings of each port. You can also view the current
connection status of each port or shut down or disable
ports.
The Port menu includes three items:
Figure 53 PoE Setup Screen
■
■
■
Administration
Link Aggregation
Statistics
Administration
Three tabs are available on the Port Administration
page:
■
■
■
Summary
Detail
Setup
Summary
Use the Summary tab to display Port State, Flow
Control, Speed, Default VLAN ID, and Duplex for all the
ports.
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Configuring Port Settings
61
Figure 54 Port Administration Summary Screen
Detail
Use the Detail tab to display detailed port setting
information for a port.
Figure 55 Port Administration Detail Screen
Setup
Use the Setup tab to configure the port settings. The
following options are available:
■
■
Port State – Enables and disables the port.
Flow Control – Enables and disables flow control on
the port. When flow control is enabled for the port,
the Switch regulates the packet flow so that a
sending device does not transmit more packets than
a receiving device can process. If flow control is
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62
CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
disabled, packets may be dropped under certain
periods of high traffic.
If you modify any of these settings, click Apply to save
your changes.
Flow control is disabled by default.
Figure 56 Port Administration Setup Screen
■
Speed – Sets the speed mode of the port. Available
options include auto, 10, 100, and 1000. For 1000
Mbps connections, see “Speed/Duplex for 1000
Mbps Connections” below.
Auto (or autonegotiation) sets the optimum
combination of speed and duplex that can be
supported by both ends of the link.
■
Duplex – Sets the duplex mode of the port. Available
options include Auto, Half, and Full.
CAUTION: It is advised not to enable Flow Control on
ports that will be connected to telephony and other
time sensitive traffic as it may hamper the QoS
performance.
Speed/Duplex for 1000 Mbps Connections
You cannot preset the speed to 1000 Mbps. To run a
port at 1000 Mbps, you must enable autonegotiation
for the port. When autonegotiation is enabled, the
Switch will automatically connect at 1000 Mbps,
providing the connected device also supports this
speed.
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Configuring Port Settings
63
1000 Mbps connections are always full-duplex.
Half-duplex connections are only available for 10 Mbps
and 100 Mbps settings.
switch or to an Internet backbone, you can aggregate
links on the Switch to increase throughput and prevent
packet loopback between switches.
For link aggregation to work, the trunks must be
configured on both ends (switches).
CAUTION: Before manually setting a port to
full-duplex, verify that the device connected to the port
is also manually set to the same speed and duplex
setting. If connecting link partners are left to
autonegotiate for a link manually set on this switch to
full-duplex, they will always negotiate to half-duplex,
resulting in a duplex mismatch. This can result in a
significant reduction in network performance. If you are
unsure of how to configure the speed/duplex setting,
simply enable autonegotiation for the port.
Four tabs are available on the Port Link Aggregation
page:
■
■
■
■
Summary
Create
Modify
Remove
You cannot modify the speed/duplex settings of ports
that are members of a trunk or aggregated link.
Guidelines for Creating Trunks
■
Any port on the Switch can be used for creating a
trunk.
Supported SFP transceivers only operate at 1000 Mbps
full-duplex. Inserting an SFP transceiver into a Gigabit
port only disables the corresponding RJ-45 port when
there is link on the SFP transceiver.
■
■
■
The Switch supports a maximum of four trunks.
Each trunk may contain up to eight members.
A port may only be a member of one trunk at any
one time.
Disabling a port that is delivering power will not disable
the power being delivered to a connected device.
■
■
All ports in a trunk must be configured in an
identical manner, including communication mode
(that is, speed, duplex mode and flow control).
Link Aggregation
Both 10/100 and Gigabit ports cannot be combined
as members in a single trunk.
Link aggregation, also called “trunking”, refers to
bonding multiple ports into a single group to effectively
combine the bandwidth into a single connection or a
“trunk”. If you are connecting the Switch to another
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CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
Summary
Create
Use the Summary tab to display a list of configured link
aggregation Group IDs and the associated member
Ports.
Use the Create tab to add ports to a group
membership.
Figure 58 Link Aggregation Create Screen
Figure 57 Link Aggregation Summary Screen
To create a new link aggregation group:
1
2
3
Enter a link aggregation group ID in the text box.
Select the ports to add to the goup.
Click Apply.
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Configuring Port Settings
65
Modify
Remove
Use the Modify tab to reassign member ports of a link
aggregation group.
Use the Remove tab to delete a link aggregation group.
Figure 60 Link Aggregation Remove Screen
Figure 59 Link Aggregation Modify Screen
To remove a link aggregation group:
1
2
From the link aggregation group list, select the
aggregated group to remove.
Click Remove.
To modify a link aggregation group:
1
2
3
Select the aggregation group to modify, then click
Select.
Select the ports to add to, and/or remove from, the
goup.
Click Apply.
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CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
Click Select None to remove all ports statistics.
Statistics
The Switch allows you to display detailed statistics of
one, several, or all ports.
Click Clear All Counters to set all port statistic counters
back to zero.
Figure 61 Port Statistics Screen
Security
Using the Web interface, you can configure the RADIUS
Client and 802.1X settings.
The Security menu includes two items:
■
RADIUS Client
■
802.1X Settings
RADIUS Client
Remote Authentication Dial-in User Service (RADIUS) is
a logon authentication protocol that uses software
running on a central server to control access to
RADIUS-aware devices on the network. An
authentication server contains a database of multiple
user name/password pairs with associated privilege
levels for each user or group that require management
access to a switch.
To display statistics for a port:
1
2
3
Access the Web interface. Click Port, then Statistics on
the menu. The Port Statistics Screen appears.
Select one port, multiple ports, or choose Select All,
and enter a refresh interval.
Click Apply.
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Security
67
Figure 62 RADIUS Client Configure Screen
Configure
The following parameters are available:
■
■
Max Retries – Sets the number of retries of sending
authentication requests.
Timeout – Sets the interval between sending
authentication requests.
■
■
IP Address – The IP address of the RADIUS server.
UDP port – The RADIUS server UDP port used for
authentication messages.
■
Key – Sets the RADIUS encryption key.
A primary RADIUS server IP address must be specified
for the Switch to implement IEEE 802.1X security. A
secondary RADIUS server may also be specified as a
backup should the primary server fail or become
inaccessible.
After you have filled in the parameters, click Apply to
save your changes.
802.1X Settings
The IEEE 802.1X standard defines a port-based access
control procedure that prevents unauthorized access to
a network by requiring users to first submit credentials
for authentication.
The 802.1X settings menu includes two tabs:
■
Summary
Setup
■
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CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
■
Operation Mode – Allows single or multiple hosts
(clients) to connect to an 802.1X-authorized port.
(Options: Single-Host, Multi-Host; Default:
Single-Host)
Summary
Use the Summary tab to display the 802.1X
authentication settings for all the ports.
Figure 63 802.1X Summary Screen
■
Single-Host: Only one host may authenticate and
pass traffic on a port.
■
Multi-Host: If at least one host authenticates on
the port, the port is "unlocked" and other, non
authenticated hosts can send and receive data.
■
Mode – Sets the authentication mode to one of the
following options:
■
■
■
Auto – Requires a dot1x-aware client to be
authorized by the authentication server. Clients
that are not dot1x-aware will be denied access.
Force-Authorized – Forces the port to grant
access to all clients, either dot1x-aware or
otherwise.
Force-Unauthorized – Forces the port to deny
access to all clients, either dot1x-aware or
otherwise.
Setup
■
■
Maximum Request – Sets the maximum number of
times the switch port will retransmit an EAP request
packet to the client before it times out the
Use the Setup tab to configure the 802.1X
authenticaion settings. The following fields are
available:
authentication session. (Range: 1-10; Default 2)
■
System Authentication – Sets the global setting for
802.1X. (Default: Disabled)
Mode Reauthentication – Sets the client to be
re-authenticated after the interval specified by the
Re-authentication Period. Re-authentication can be
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Monitoring
69
Figure 64 802.1X Setup Screen
used to detect if a new device is plugged into a
switch port. (Default: Disabled)
■
Max Count – The maximum number of hosts that
can connect to a port when the Multi-Host
operation mode is selected. (Range: 1-1024;
Default: 5)
■
■
Reauthentication Period – Sets the time period after
which a connected client must be re-authenticated.
(Range: 1-65535 seconds; Default: 3600 seconds)
Quiet Period – Sets the time that a switch port waits
after the Max Request Count has been exceeded
before attempting to acquire a new client. (Range:
1-65535 seconds; Default: 60 seconds)
■
Transmit Period – Sets the time period during an
authentication session that the switch waits before
re-transmitting an EAP packet. (Range: 1-65535;
Default: 30 seconds)
Monitoring
Using the Web interface, you can display address table
information, set up port mirroring, and perform cable
diagnostics.
After you have filled in the parameters, click Apply to
save your changes.
The Monitoring menu includes three items:
■
■
■
Address Table
Port Mirroring
Cable Diagnostics
Address Table
The Switch’s address table contains the MAC addresses
learned by monitoring the source address for traffic
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CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
entering the Switch. You can display the address table
to find specific MAC addresses, or view MAC addresses
associated with a specific port or VLAN.
Port Summary
Use the Port Summary tab to display the address table
information for selected ports.
The Address Table menu includes two tabs:
Figure 66 Address Table Port Summary Screen
■
Summary
■
Port Summary
Summary
Use the Summary tab to display the address table
information for all ports.
Clicking on any entry in the address table will copy the
entire contents of the address table into the clipboard
for use with other applications.
Figure 65 Address Table Summary Screen
Port Mirroring
The Switch allows you to monitor traffic going in and
out of a particular port. For traffic monitoring to work,
you need to attach a network analyzer to one port and
use it to monitor the traffic of other ports on the
Switch.
To set up traffic monitoring, you need to set a monitor
port (the port that is connected to the analyzer), and a
mirror port (the port that is to be monitored). Once the
pair is defined, and you enable traffic monitoring, the
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Monitoring
71
Switch takes all the traffic going in or out of the mirror
port and copies it to the monitor port.
To set up port mirroring:
Connect a network analyzer to a port.
1
2
Access the Web interface. Click Monitoring, then Port
Mirroring on the menu. The Port Mirroring Setup Screen
appears.
CAUTION: The monitor port should have a higher
bandwidth than the mirror port. Otherwise, the Switch
may not be able to copy all traffic effectively during
periods of high traffic.
3
4
Click Monitor as the port type, then select the port
number to which you connected the network analyzer.
Traffic to or from the selected mirrored port will be
forwarded to this port.
Two tabs are available on the Port Mirroring page:
■
Setup
■
Remove
Click Mirror as the port type, then select the port
number that you want to monitor. Traffic to or from this
port will be forwarded to the monitor port.
Setup
5
6
Select Mirror In to monitor a port’s incoming traffic, or
Mirror Out to monitor a port’s outgoing traffic.
Use the Setup tab to create a port mirror session.
Figure 67 Port Mirroring Setup Screen
Click Apply.
Remove
Use the Remove tab to delete a port mirroring session.
Figure 68 Port Mirroring Remove Screen
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72
CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
To remove a port mirror session:
Summary
Use the Summary tab to display information on Test
Result, Cable Fault Distance, or Last Update for every
port on the switch.
1
2
From the port mirror session list, select the session to
remove.
Click Remove.
Figure 69 Cable Diagnostic Summary Screen
Cable Diagnostics
The Switch provides a cable diagnostic utility, which
helps you detect and resolve issues with the attached
cables.
The Cable Diagnostics menu includes two tabs:
■
Summary
■
Diagnostics
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Monitoring
73
Diagnostics
Use the Diagnostics tab to display individual port
information on Test Result, Cable Fault Distance (in
meters), and Last Update.
Figure 70 Cable Diagnostic Screen
In the example: "0,0", the first digit refers to the length
of the transmit pairs. The second digit the length of the
receive pairs.
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74
CHAPTER 4: CONFIGURING THE SWITCH FROM THE WEB INTERFACE
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TROUBLESHOOTING
5
This chapter lists some issues that you may encounter
while installing, using, and managing the Switch, with
suggested courses of corrective action to take.
Do as instructed and wait for the remainder of the
switch initialization to complete.
You will then be presented with 4 options:
If you encounter an issue that is not listed here and you
cannot solve it, check the 3Com Knowledgebase at
http://knowledgebase.3com.combefore
■
■
■
■
Initialize
Password
Reboot
contacting your local technical support representative.
Upgrade
For more information on how to obtain support for
Selecting Initialize will delete all the stored configura-
tion information, including IP address modes and pass-
words.
Selecting Password will delete all stored passwords. The
default user name will now be admin with no pass-
word.
Resetting to Factory Defaults
If the Switch does not operate normally or if the firm-
ware becomes corrupted, you can reset the Switch to
factory defaults.
Selecting Reboot will restart the Switch without making
any changes
Connect to the console interface, as detailed elsewhere
in this user guide.
Selecting Upgrade will initiate a firmware download via
TFTP. Follow the instructions provided with your TFTP
server to upgrade the firmware using this interface.
During the power up sequence after the Power On Self
Test has completed, the following message will be dis-
played:
CAUTION: Resetting the Switch to factory defaults
erases all your settings. You will need to reconfigure the
Switch after you reset it.
Press Ctrl+C within 5 seconds to get into
FailSafe mode
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76
CHAPTER 5: TROUBLESHOOTING
The Switch will perform automatic IP configuration
page 37 for more information.
A link is connected, but the Link/Activity
LED for the port is off.
There is a problem with this connection. Verify that:
■
The device being connected to is powered on and
operating correctly.
Forgotten Static IP Address
■
■
■
The cable is connected at both ends.
The cable is not damaged.
If you have forgotten the static IP address that you have
assigned to the Switch and you need to access the Web
interface, you can use the console interface. Use the
summary command once you logged in to display the IP
settings of the switch. Alternately, use the 3Com Detect
work
If the connection is to a workstation, that the work-
station's network interface is installed and config-
ured correctly.
■
The correct category of cable is being used for the
required link speed. Category 3 cables can be used
for 10BASE-T operation only. Category 5 cable is
required for 100BASE-TX or 1000BASE-T. 3Com rec-
ommends Category 5e or 6 cables for 1000BASE-T
operation.
Solving LED Issues
This section lists some issues that are related to the LEDs
on the front panel of the Switch. For information on
basic LED checks, refer to the following topics in
A fiber cable is connected, but the Module
Active LED is off.
■
■
■
Verify that:
■
■
■
The fiber cable is in good condition.
The SFP module is correctly inserted.
A 3Com SFP module is being used. Refer to
“Approved SFP Transceivers” on page 22 for details.
■
The equipment at the far end is installed and cor-
rectly configured.
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If the Problem Persists
77
The Link/Activity LED is on, but network
performance is poor
If the Problem Persists
If the problem persists and the unit still does not oper-
ate successfully, contact your 3Com network supplier
with the following information before returning the
unit:
The Switch supports full-duplex autonegotiation. If the
connected device does not support autonegotiation,
ensure that it is configured for half-duplex operation
only. If the connected device has autonegotiation dis-
abled or overridden, and is configured as full-duplex,
the Switch will configure the link as half-duplex, caus-
ing a mismatch that will reduce network performance
when data is transmitting and receiving simultaneously
on the same link.
■
Product number and serial number (printed on a
label supplied with the unit).
■
A brief description of the issue
Ensure that the connected device has either:
■
Autonegotiation enabled, or
■
The ports are configured for half-duplex operation
All ports appear to show continual activity.
There may be broadcast storms on the network.
Remove port connections one at a time, waiting a few
seconds between each port. If the LEDs go off after
removing a port connection, the device that was con-
nected to that port is introducing an excessive amount
of broadcast frames to the network. Some pieces of
network equipment operate by sending out broadcast
frames regularly.
Refer to the documentation that accompanies the
device for information on disabling the broadcast
operation.
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78
CHAPTER 5: TROUBLESHOOTING
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OBTAINING SUPPORT FOR YOUR PRODUCT
A
are available to manage your installation with minimal
disruption to your network. Expert assessment and
implementation services are offered to fill resource gaps
and ensure the success of your networking projects.
More information on 3Com maintenance and
Register Your Product
Warranty and other service benefits start from the date
of purchase, so it is important to register your product
quickly to ensure you get full use of the warranty and
other service benefits available to you.
Professional Services is available at www.3com.com.
Contact your authorized 3Com reseller or 3Com for a
complete list of the value-added services available in
your area.
Warranty and other service benefits are enabled through
product registration. Register your product at
http://eSupport.3com.com/. 3Com eSupport
services are based on accounts that you create or have
authorization to access. First time users must apply for a
user name and password that provides access to a
number of eSupport features including Product
Registration, Repair Services, and Service Request. If you
have trouble registering your product, please contact
3Com Global Services for assistance.
Troubleshoot Online
You will find support tools posted on the 3Com Web
site at www.3com.com/
3Com Knowledgebase helps you troubleshoot 3Com
products. This query-based interactive tool is located at
http://knowledgebase.3com.com and
contains thousands of technical solutions written by
3Com support engineers.
Purchase Value-Added Services
To enhance response times or extend warranty benefits,
contact 3Com or your authorized 3Com reseller.
SM
Value-added services like 3Com Express and
Access Software Downloads
SM
Guardian can include 24x7 telephone technical
Software Updates are the bug fix/maintenance
releases for the version of software initially purchased
with the product. In order to access these Software
support, software upgrades, onsite assistance or
advance hardware replacement. Experienced engineers
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80
APPENDIX A: OBTAINING SUPPORT FOR YOUR PRODUCT
Updates you must first register your product on the
3Com Web site at http://eSupport.3com.com/.
■
A list of system hardware and software, including
revision level
■
■
Diagnostic error messages
First time users will need to apply for a user name and
password. A link to software downloads can be found
at http://eSupport.3com.com/, or under the
Product Support heading at www.3com.com/
Details about recent configuration changes, if
applicable
To send a product directly to 3Com for repair, you must
first obtain a return authorization number (RMA).
Products sent to 3Com, without authorization numbers
clearly marked on the outside of the package, will be
returned to the sender unopened, at the sender’s
expense. If your product is registered and under
warranty, you can obtain an RMA number online at
http://eSupport.3com.com/. First time users
will need to apply for a user name and password.
Software Upgrades are the feature releases that
follow the software version included with your original
product. In order to access upgrades and related
documentation you must first purchase a service
contract from 3Com or your reseller.
Telephone Technical Support and Repair
To obtain telephone support as part of your warranty
and other service benefits, you must first register your
product at http://eSupport.3com.com/
Contact Us
3Com offers telephone, e-mail and Internet access to
technical support and repair services. To access these
services for your region, use the appropriate telephone
number, URL or e-mail address from the list below.
Warranty and other service benefits start from the date
of purchase, so it is important to register your product
quickly to ensure you get full use of the warranty and
other service benefits available to you.
Telephone numbers are correct at the time of
publication. Find a current directory of support
telephone numbers posted on the 3Com Web site at
http://csoweb4.3com.com/contactus/
When you contact 3Com for assistance, please have the
following information ready:
■
Product model name, part number, and serial
number
■
Proof of purchase, if you have not pre-registered
your product
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Contact Us
81
.
Country
Telephone Number
Country
Telephone Number
From the following countries, call the appropriate number
Asia, Pacific Rim Telephone Technical Support and
Repair
Austria
0800 297 468
0800 71429
Belgium
Denmark
Finland
Australia
Hong Kong
India
1800 075 316
2907 0456
800 17309
0800 113153
0800 917959
0800 182 1502
06800 12813
1 800 553 117
180 945 3794
800 879489
000 800 440 1193
001 803 852 9825
03 3507 5984
1800 812 612
0800 450 454
1800 144 10220 or
029003078
France
Indonesia
Japan
Germany
Hungary
Ireland
Malaysia
New Zealand
Philippines
Israel
Italy
Luxembourg
Netherlands
Norway
Poland
Portugal
South Africa
Spain
800 23625
PR of China
Singapore
South. Korea
Taiwan
800 810 0504
800 448 1433
080 698 0880
00801 444 318
001 800 441 2152
0800 0227788
800 11376
00800 4411 357
800 831416
Thailand
0800 995 014
900 938 919
020 795 482
0800 553 072
0800 096 3266
Pakistan Call the U.S. direct by dialing 00 800 01001, then
dialing 800 763 6780
Sri Lanka Call the U.S. direct by dialing 02 430 430, then
dialing 800 763 6780
Sweden
Switzerland
U.K.
You can also obtain support in this region using this URL:
http://emea.3com.com/support/email.html
Vietnam Call the U.S. direct by dialing 1 201 0288, then
dialing 800 763 6780
You can also obtain non-urgent support in this region at
these email addresses:
Technical support and general requests:
Return material authorization: [email protected]
Contract requests: [email protected]
You can also obtain non-urgent support in this region at this
email address [email protected]
Or request a return material authorization number (RMA) by
FAX using this number: +61 2 9937 5048, or send an
email at this email address: [email protected]
Europe, Middle East, and Africa Telephone Technical
Support and Repair
From anywhere in these
regions not listed below, call:
+44 1442 435529
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82
APPENDIX A: OBTAINING SUPPORT FOR YOUR PRODUCT
Country
Telephone Number
Country
Telephone Number
Latin America Telephone Technical Support and Repair
From the Caribbean, Central and South America, call:
You can also obtain support in this region using the
following:
Spanish speakers, enter the URL:
http://lat.3com.com/lat/support/form.html
Antigua
1 800 988 2112
Portuguese speakers, enter the URL:
http://lat.3com.com/br/support/form.html
Argentina
Aruba
0 810 444 3COM
1 800 998 2112
Bahamas
Barbados
Belize
1 800 998 2112
English speakers in Latin America should send e-mail to:
1 800 998 2112
52 5 201 0010
Bermuda
Bonaire
1 800 998 2112
1 800 998 2112
US and Canada Telephone Technical Support and
Repair
Brazil
0800 13 3COM
Cayman
1 800 998 2112
Chile
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
1 800 998 2112
1 800 876 3266
Colombia
Costa Rica
Curacao
Ecuador
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
57 1 657 0888
AT&T +800 998 2112
1 800 998 2112
571 657 0888
Dominican Republic
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
01 800 849CARE
AT&T +800 998 2112
AT&T +800 998 2112
54 11 4894 1888
AT&T +800 998 2112
1 800 998 2112
Nicaragua
Panama
Paraguay
Peru
Puerto Rico
Salvador
Trinidad and Tobago
Uruguay
Venezuela
Virgin Islands
AT&T +800 998 2112
1 800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
57 1 657 0888
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TECHNICAL INFORMATION
B
Physical
3CBLSF26 Related Standards
44 cm (17.3 in)
Width
The Baseline Switch 2226-SFP Plus has been designed
to the following standards:
17.3 cm (6.8 in)
4.4 cm (1.7 in) or 1U
1.66 kg (3.66 lbs)
Depth
Height
IEEE 802.3 (Ethernet), IEEE 802.3u (Fast
Functional
Weight
Mounting
Ethernet), IEEE 802.3ab and IEEE 802.3z
(Gigabit Ethernet), IEEE 802.3x (Flow
Control), IEEE 802.1D 1993 (Bridging), IEEE
802.1Q 1998 (Virtual LAN)
Free standing, or 19 inch rack mounted
using the mounting kit supplied
8192
MAC Address
Safety
Electrical
UL 60950-1, EN 60950-1, CSA 22.2
#60950-1, IEC 60950-1
IEC 320
Power Inlet
50/60 Hz
AC Line Frequency
Input Voltage
Current Rating
EN61000-3-2 & EN61000-3-3, EN 55022
Class A, FCC Part 15 Subpart B Class A,
ICES-003 Class A, VCCI Class A, CISPR 22
Class A
EMC Emissions
100–240 VAC (auto range)
1 Amp (maximum)
30 W
Maximum Power
Consumption
EN 55024
Immunity
102 BTU/hr
Maximum Power
Dissipation
Environmental
0-40 °C (32–104 °F)
Operating
Temperature
-40-70 °C (-40-158 °F)
Storage
Temperature
0-95% (non-condensing)
Humidity
Standard
EN 60068 (IEC 68)—various parts
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84
APPENDIX B: TECHNICAL INFORMATION
Physical
3CBLSF26PWR Related Standards
44 cm (17.3 in)
Width
The Baseline Switch 2426-PWR Plus has been
designed to the following standards:
23.8 cm (9.4 in)
4.4 cm (1.7 in) or 1U
3.2 kg (7.05 lbs)
Depth
Height
Weight
Mounting
IEEE 802.3 (Ethernet), IEEE 802.3u (Fast
Ethernet), IEEE 802.3ab and IEEE 802.3z
(Gigabit Ethernet), IEEE 802.3x (Flow
Control), IEEE 802.1D 1993 (Bridging), IEEE
802.3af (Power over Ethernet), IEEE
802.3at (Power over Ethernet Plus)
Functional
Free standing, or 19 inch rack mounted
using the mounting kit supplied
Electrical
8192
MAC Address
Safety
IEC 320
Power Inlet
UL 60950-1, EN 60950-1, CSA 22.2
#60950-1, IEC 60950-1
50/60 Hz
AC Line Frequency
Input Voltage
Current Rating
100–240 VAC (auto range)
3.5 Amp (maximum)
240 W
EN 61000-3-2 & EN 61000-3-3, EN 55022
Class A, FCC Part 15 Subpart B Class A,
ICES-003 Class A, VCCI Class A, CISPR 22
Class A
EMC Emissions
Maximum Power
Consumption
EN 55024
Immunity
182 BTU/hr
190 W
Maximum Power
Dissipation
Environmental
Maximum
Pover-over-Ethernet
Budget
0-40 °C (32–104 °F)
Operating
Temperature
-40-70 °C (-40-158 °F)
Storage
Temperature
0-95% (non-condensing)
Humidity
Standard
EN 60068 (IEC 68)—various parts
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3CBLSF50 Related Standards
85
Physical
3CBLSF50 Related Standards
440 mm (17.3 in)
215 mm (8.5 in)
Width
The Baseline Switch 2250-SFP Plus has been designed
to the following standards:
Depth
41 mm (1.6 in) or 1U
1.9 kgs (4.19 lbs)
Height
ISO 8802-3, IEEE 802.3 (Ethernet), IEEE
802.3u (Fast Ethernet), IEEE 802.3ab and
IEEE 802.3z (Gigabit Ethernet), IEEE 802.3x
(Flow Control), IEEE 802.1D (Bridging)
Functional
Weight
Mounting
Free standing, or 19 inch rack mounted
using the mounting kit supplied
8192
MAC Address
Safety
UL 60950-1, EN 60950-1, CSA 22.2,
#60950-1, IEC 60950-1
Electrical
IEC 320
Power Inlet
EN61000-3-2 & EN 61000-3-3, EN 55022,
Class A, FCC Part 15, Subpart B Class A,
ICES-003 Class A, VCCI Class A, CISPR 22
Class A
EMC Emissions
50/60 Hz
AC Line Frequency
Input Voltage
Current Rating
100–240 VAC (auto range)
1 Amp (maximum)
30 W
EN 55024
Immunity
Maximum Power
Consumption
Environmental
184.3 BTU/hr
Maximum Power
Dissipation
0–40 °C (32–104 °F)
Operating
Temperature
-40-70 °C (-40-158 °F)
Storage
Temperature
0–95% (non-condensing)
Humidity
Standard
EN 60068 (IEC 68)—various parts
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86
APPENDIX B: TECHNICAL INFORMATION
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PIN-OUTS
C
Table 1 Console Cable Pinouts
RJ-45 Signal Direction DB9
Console Cable
DB9
(modem) (console)
A Console cable is an 8-conductor RJ45-to-DB9 cable.
One end of the cable has an RJ-45 plug for connecting
to the switch’s Console port, and the other end has a
DB-9 socket connector for connecting to the serial port
1
2
3
4
5
6
7
8
RTS
DTR
TXD
CD
—
—
—
—
—
—
—
—
7
4
3
1
5
2
6
8
8
6
2
5
5
3
4
7
Figure 71 Console Cable
Direction A
Pos 9
GND
RXD
DSR
RTS
Main label
Direction B
8
A
B
1
Pos 1
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88
APPENDIX C: PIN-OUTS
Null Modem Cable
Modem Cable
RJ-45 to RS-232 25-pin
RJ-45 to RS-232 25-pin
RS-232 Modem Port
Cable connector: 25-pin male
PC/Terminal
Cable connector: 25-pin male/female
only required if screen
Cable connector: RJ-45 female
Cable connector: RJ-45 female
Screen
TxD
Shell
1
2
3
4
5
Screen
TxD
Screen
TxD
Shell
1
Screen
3
2
7
8
6
3
2
5
7
8
3
RxD
always required
RxD
RxD
RxD
2
TxD
RTS
RTS
Ground
RTS
7
Ground
RTS
CTS
CTS
4
DSR
Ground
DCD
DTR
DSR
Ground
DCD
DTR
6
20
DTR
CTS
required for handshake
5
1
4
7
DSR
DCD
DTR
6
1
4
5
6
8
CTS
8
DSR
DCD
20
PC-AT Serial Cable
RJ-45 to 9-pin
PC-AT Serial Port
Cable connector: 9-pin female
Cable connector: RJ-45 female
only required if screen
Screen
DTR
Shell
Shell
Screen
DCD
RxD
Required for handshake
4
3
2
8
5
1
2
3
4
5
Always required
TxD
RxD
TxD
required for handshake
always required
CTS
DTR
Ground
DSR
RTS
Ground
DSR
RTS
6
7
1
6
7
8
required for handshake
DCD
CTS
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Ethernet Port RJ-45 Pin Assignments
89
Table 3 RJ-45 MDIX Pin Assignments
Ethernet Port RJ-45 Pin Assignments
Pin Number 10/100
1000
Table 2 RJ-45 MDI Pin Assignments
Ports configured as MDIX
Pin Number 10/100
1000
1
2
3
4
5
6
7
8
Receive Data +
Bidirectional Data B+
Bidirectional Data B-
Bidirectional Data A+
Bidirectional Data D+
Bidirectional Data D-
Bidirectional Data A-
Bidirectional Data C+
Bidirectional Data C-
Ports configured as MDI
Receive Data -
Transmit Data +
Not assigned
Not assigned
Transmit Data -
Not assigned
Not assigned
1
2
3
4
5
6
7
8
Transmit Data +
Bidirectional Data A+
Bidirectional Data A-
Bidirectional Data B+
Bidirectional Data C+
Bidirectional Data C-
Bidirectional Data B-
Bidirectional Data D+
Bidirectional Data D-
Transmit Data -
Receive Data +
Not assigned
Not assigned
Receive Data –
Not assigned
Not assigned
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90
APPENDIX C: PIN-OUTS
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3COM CLI REFERENCE GUIDE
D
This section describes using the Command Line Interface
6
Select Terminal keys for Function, Arrow, and Ctrl
keys. Ensure that the setting is for Terminal keys (not
Windows keys).
(CLI) to manage the device. The device is managed
through the CLI from a direct connection to the device
console port.
Logging on to the CLI
The Login process requires a User Name and Password.
The default user name for first time configuration is
admin. No password is required. User names and
passwords are case sensitive.
Getting Started with the Command Line
Interface
Using the CLI, network managers enter configuration
commands and parameters to configure the device.
Using the CLI is very similar to entering commands on a
UNIX system.
To logon to the CLI Interface:
1
Press Enter without typing in a username. The Login
prompt displays:
Console Port
Login:
To start using the CLI via a console port:
2
3
Enter your User Name at the Login prompt.
Press Enter. The Password prompt displays:
1
Connect the RJ-45 cable to the Console port of the
switch to the serial port of the terminal or computer
running the terminal emulation application.
Password:
2
3
Set the baud rate to 38400.
Set the data format to 8 data bits, 1 stop bit, and no
parity.
The Login information is verified, and displays the fol-
lowing CLI menu:
4
5
Set Flow Control to none.
Select menu option#
Under Properties, select VT100 for Emulation mode.
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92
APPENDIX D: 3COM CLI REFERENCE GUIDE
If the password is invalid, the following message
appears and Login process restarts.
CLI Commands
This Command section contains the following
commands:
Incorrect Password
■
■
■
■
■
■
■
■
■
?
Automatic Logout
Ping
The user session is automatically terminated after 30
minutes in which no device configuration activity has
occurred. The following message is displayed:
Summary
ipSetup
Upgrade
Initialize
Reboot
Logout
Password
Session closed by automatic logout.
Concurrent CLI Sessions
The command line interface supports one CLI session.
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CLI Commands
93
?
To return to a previous menu, type "q".
To return to the top level menu or abort an
action, press the [Esc] key.
The ? command displays a list of CLI commands on the
device.
-- Enter <CR> to continue --:
Syntax
?
Menu options: --------3Com Baseline Switch
2426-PWR Plus-----------------------
?
- Displays Help information
- Reset the device to factory
Default Configuration
initialize
default, except IP.
This command has no default configuration.
ipSetup
logout
ping
- Configures IP address.
- Logout from this session.
- Ping a remote station.
- Change password.
User Guidelines
There are no user guidelines for this command.
password
reboot
- Power cycles the device.
Example
summary
- Summarises IP setup and software
versions.
The following displays the list presented for the ?
command:
upgrade
- Software upgrade over TFTP.
Type ? for help.
Select menu option#?
-----------------3Com Baseli (1)--------------
Select menu option:
This command line console allows you to configure
and manage your system by making selections from
the displayed menu.
You can enter successive menu choices on the same
line instead of pressing the [Return] key after
each selection. For example, if you are at the
top level menu and wish to display the system
configuration, enter "system summary".
To specify a menu choice you need only type a
unique abbreviation.
For example, "system summary" can be abbreviated
"sy s".
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94
APPENDIX D: 3COM CLI REFERENCE GUIDE
Ping
Summary
The Ping command sends ICMP echo request packets to
The Summary command displays the current IP
another node on the network.
configuration and software versions running on the
device. It is intended for devices that support separate
runtime and bootcode Images.
Syntax
ping [IP address | URL| hostname]
Syntax
Parameters
Summary
■
■
■
IP Address — IP address to ping.
URL — URL address to ping.
Default Configuration
This command has no default configuration.
hostname — hostname to ping. (Range: 1 - 158
characters)
User Guidelines
There are no user guidelines for this command.
Default Configuration
This command has no default configuration.
Example
The following displays current IP configuration and
software versions running on the device:
User Guidelines
There are no user guidelines for this command.
Select menu option: summary
Example
IP Method:
manual
IP address:
192.168.1.1
255.255.255.0
192.168.1.254
0.00.00.11
12.26.13.43
The following displays the result of a Ping command:
Subnet mask:
Default gateway:
Runtime version:
Bootcode version:
Select menu option: ping 192.168.1.9
Starting ping, resolution of displayed time is 10
milli-seconds.
Response from 192.168.1.9: TTL=128. time=20ms
Select menu option:
Select menu option:
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CLI Commands
95
Example
ipSetup
The ipSetup command allows the user to define an IP
address on the device either manually or via a DHCP
server.
The following example displays an IP address configured
manually:
Select menu option: ipSetup
Enter configuration method (auto,manual)[auto]:
manual
Syntax
ipSetup
Enter IP Address
[0.0.0.0
]:
]:
192.168.1.1
Enter Subnet Mask
255.255.255.0
[255.255.0.0
Default Configuration
No default IP address is defined for interfaces.
Enter Default Gateway
[192.168.1.254 ]:
Select management VLAN ID (1)[1]:
This operation may take up to 30 seconds.
Select menu option:
User Guidelines
When the IP address is configured manually by the user,
the address must be in the range 0.0.0.0 through
223.255.255.255.
The following example displays an IP address obtained
via a DHCP server:
IP Addresses configured beyond the range of 224.0.0.0
are defined as multicast, experimental or broadcast
addresses.
Select menu option: ipSetup
If a default gateway is configured manually, the
IP-address and mask are required to be the same as the
gateway-address and mask.
Enter configuration method (auto,manual)[manual]:
auto
Select management VLAN ID (1)[1]:
This operation may take up to 30 seconds.
Select menu option:
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96
APPENDIX D: 3COM CLI REFERENCE GUIDE
Example
Upgrade
The Upgrade command starts a system download and
thereby allowing a system upgrade.
The following example upgrades the system software on
the Switch using a TFTP server:
Select menu option: upgrade
Syntax
TFTP Server Address [192.168.1.254]: 192.168.1.9
File Name [runtime2.bix]: bfs00_00_00_11.bin
upgrade
Software Upgrade has
Default Configuration
begun...........................................
................................................
................................................
................................................
................................................
................................................
................................................
................................................
................................................
...........................
This command has no default configuration.
User Guidelines
The Upgrade command prompts the user for required
information. The TFTP server IP address and the software
image file name on the server must be specified.
Upgrade Successful.
Select menu option:
During the upgrade process, a series of dots appear
representing the upgrade process in the CLI interface.
When the upgrade process is completed, the command
prompt reappears.
The Dual Software Image feature is supported, therefore
the next boot after the Upgrade command will always
use the newly downloaded image.
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CLI Commands
97
Initialize
Reboot
The Initialize command resets the device configuration
The Reboot command simulates a power cycle of the
to factory defaults, retaining the current IP
configuration.
device.
Syntax
reboot
Syntax
Initialize
Default Configuration
Default Configuration
This command has no default configuration.
This command has no default configuration.
User Guidelines
User Guidelines
There are no user guidelines for this command.
The system prompts for confirmation of the request. If
no response is entered within 15 seconds, timeout
occurs and the command is not executed.
Example
Select menu option: reboot
Are you sure you want to reset the system
(yes,no)[no]: yes
Example
Saving configuration......Saved config to all
units.
The following example resets the Switch to factory
defaults:
System rebooting..........
Select menu option: initialize
WARNING: This command initializes the system to
factory defaults (excluding Management IP
configuration) and causes a reset.
Do you wish to continue (yes,no)[no]: yes
Saving configuration.....Saved config to all
units.
System rebooting..........
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98
APPENDIX D: 3COM CLI REFERENCE GUIDE
Logout
Password
The Logout command terminates the CLI session.
The Password command changes the user’s password.
Syntax
logout
Syntax
password
Default Configuration
Default Configuration
This command has no default configuration.
This command has no default configuration.
User Guidelines
User Guidelines
There are no user guidelines for this command.
The user needs to login to the session in order to
change the password.
Example
Example
Select menu option: logout
Select menu option: password
Old password:
Enter new password:
Retype password:
The command line interface password has been
successfully changed.
Select menu option:
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REGULATORY NOTICES
FCC Statement
CE Statements (Europe)
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 harmful interference in a commerical environment. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause
harmful interference to radio communications, in which case the user will be required to
correct the interference at their own expense.
EU Representative:
3Com Europe Limited
Peoplebuilding 2, Peoplebuilding Estate
Maylands Avenue
Hemel Hempstead, Hertfordshire
HP2 4NW
United Kingdom
This product complies with the European Low Voltage Directive 73/23/EEC and EMC
Directive 89/336/EEC as amended by European EMC Directive 2004/108/EC.
Warning: This is a class A product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate measures.
Information to the User
If this equipment does cause interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
A copy of the signed Declaration of Conformity can be downloaded from the Product
Support web page for the Baseline Switch 2226-SFP Plus, 2426-PWR Plus and 2250-SFP
Plus at http://www.3Com.com.
■
■
■
■
Reorient the receiving antenna.
Also available at http://support.3com.com/doc/3CBLSF_EU_DOC.pdf
Relocate the equipment with respect to the receiver.
Move the equipment away from the receiver.
VCCI Statement
Plug the equipment into a different outlet so that equipment and receiver are
on different branch circuits.
If necessary the user should consult the dealer or an experienced radio/television
technician for additional suggestions. The user may find the following booklet prepared
by the Federal Communications Commission helpful:
How to Identify and Resolve Radio-TV Interference Problems
This booklet is available from the U.S. Government Printing Office, Washington, DC
20402, Stock No. 004-000-00345-4. In order to meet FCC emissions limits, this
equipment must be used only with cables which comply with IEEE 802.3.
Pre-Standard IEEE 802.3at and Cable Temperatures
3Com recommends that you do not operate your cables above 50°C (122°F) if you are
using the higher power mode capability of the 3CBLSF26PWR. This switch can deliver up
to 29.6 W per port (measured at the PD, assuming 100 m Cat 5E cable connected
between the PD and the Switch 2426-PWR, subject to power being available), and in
certain cable installations this may result in increased cable temperatures. If you are in
anyway unsure of how your cable installation is laid out, you should contact an approved
cable installation company for advice prior to using the higher power modes.
ICES Statement
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la Classe A est conforme à la norme NMB-003 du Canada.
This guidance is only applicable to pre-standard 802.3at operation. When operating in
802.3af (15.4 W) mode it is not necessary to run at lower than rated cable temperatures.
99
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100
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GLOSSARY
10BASE-T
Auto-negotiation
The IEEE specification for 10 Mbps Ethernet over
Category 3, 4 or 5 twisted pair cable.
Auto-negotiation is where two devices sharing a link,
automatically configure to use the best common speed.
The order of preference (best first) is: 1000BASE-T full
duplex, 100BASE-TX full duplex, 100BASE-TX half
duplex, 10BASE-T full duplex, and 10BASE-T half duplex.
Auto-negotiation is defined in the IEEE 802.3 standard
for Ethernet and is an operation that takes place in a
few milliseconds. Auto-negotiation must be enabled for
the 1000BASE-T ports to operate at 1000 Mbps, full
duplex.
100BASE-TX
The IEEE specification for 100 Mbps Fast Ethernet over
Category 5 twisted-pair cable.
1000BASE-LX
IEEE 802.3z specification for Gigabit Ethernet over 9/125
micron core single-mode fiber cable.
Bandwidth
1000BASE-SX
The information capacity, measured in bits per second,
that a channel can transmit. The bandwidth of Ethernet
is 10 Mbps, the bandwidth of Fast Ethernet is 100
Mbps and Gigabit Ethernet is 1000 Mbps.
IEEE 802.3z specification for Gigabit Ethernet over two
strands of 50/125 or 62.5/125 micron core multimode
fiber cable.
BPDU
1000BASE-T
Bridge Protocol Data Unit. A type of information packet
that ensures that data is efficiently exchanged between
Switches in a LAN. BPDU messages detect loops in a
network, and remove them by shutting down the bridge
causing the loop.
IEEE 802.3ab specification for Gigabit Ethernet over
100-ohm Category 5, 5e or 6 twisted-pair cable (using all
four wire pairs).
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102
GLOSSARY
Category 3 Cables
Client
One of five grades of Twisted Pair (TP) cabling defined
The term used to describe the desktop PC that is
by the EIA/TIA-568 standard. Category 3 is voice grade
cable and can only be used in Ethernet networks
(10BASE-T) to transmit data at speeds of up to 10
Mbps.
connected to your network.
DHCP
Dynamic Host Configuration Protocol. This protocol
automatically assigns an IP address for every computer
on your network. Windows 95, Windows 98 and
Windows NT 4.0 contain software that assigns IP
addresses to workstations on a network. These
assignments are made by the DHCP server software that
runs on Windows NT Server.
Category 5 Cables
One of five grades of Twisted Pair (TP) cabling defined
by the EIA/TIA-568 standard. Category 5 can be used in
Ethernet (10BASE-T) and Fast Ethernet networks
(100BASE-TX) and can transmit data at speeds of up to
100 Mbps. Category 5 cabling is better to use for
network cabling than Category 3, because it supports
both Ethernet (10 Mbps) and Fast Ethernet (100 Mbps)
speeds.
Ethernet
A LAN specification developed jointly by Xerox, Intel and
Digital Equipment Corporation. Ethernet networks use
CSMA/CD to transmit packets at a rate of 10 Mbps and
100 Mbps over a variety of cables.
Category 5e Cables
One of five grades of Twisted Pair (TP) cabling defined
by the EIA/TIA-568 standard. Category 5e can be used
in Ethernet (10BASE-T), Fast Ethernet (100BASE-TX) and
Gigabit Ethernet (1000BASE-T) networks, and can
transmit data at speeds of up to 1000 Mbps.
Ethernet Address
See MAC address.
Fast Ethernet
An Ethernet system that is designed to operate at 100
Mbps.
Category 6 Cables
One of five grades of Twisted Pair (TP) cabling defined
by the EIA/TIA-568-B standard. Category 6 can be used
in Ethernet (10BASE-T), Fast Ethernet (100BASE-TX) and
Gigabit Ethernet (1000BASE-T) networks, and can
transmit data at speeds of up to 1000 Mbps.
Gigabit Ethernet
An Ethernet system that is designed to operate at 1000
Mbps.
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103
Full Duplex
IETF
A system that allows packets to be transmitted and
Internet Engineering Task Force. An organization
received at the same time and, in effect, doubles the
potential throughput of a link.
responsible for providing engineering solutions for
TCP/IP networks. In the network management area, this
group is responsible for the development of the SNMP
protocol.
Half Duplex
A system that allows packets to be transmitted and
received, but not at the same time. Half duplex is not
supported for 1000 Mbps. Contrast with full duplex.
IP
Internet Protocol. IP is a layer 3 network protocol that
is the standard for sending data through a network. IP
is part of the TCP/IP set of protocols that describe the
routing of packets to addressed devices. An IP address
consists of 32 bits divided into two or three fields: a
network number and a host number or a network
number, a subnet number, and a host number.
IEEE
Institute of Electrical and Electronics Engineers. This
American organization was founded in 1963 and sets
standards for computers and communications.
IEEE 802.1D
IP Address
Specifies a general method for the operation of MAC
bridges, including the Spanning Tree Protocol.
Internet Protocol Address. A unique identifier for a
device attached to a network using TCP/IP. The address
is written as four octets separated with periods
(full-stops), and is made up of a network section, an
optional subnet section and a host section.
IEEE 802.1Q
VLAN Tagging - Defines Ethernet frame tags which carry
VLAN information. It allows switches to assign
endstations to different virtual LANs, and defines a
standard way for VLANs to communicate across
switched networks.
ISP
Internet Service Provider. An ISP is a business that
provides connectivity to the Internet for individuals and
other businesses or organizations.
IEEE 802.3ad
A standard that defines link aggregation. 802.3ad is
now incorporated into the relevant sections of the IEEE
Std. 802.3-2002.
LAN
Local Area Network. A network of end stations (such
as PCs, printers, servers) and network devices (hubs and
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104
GLOSSARY
switches) that cover a relatively small geographic area
(usually not larger than a floor or building). LANs are
characterized by high transmission speeds over short
distances (up to 1000 metres).
purpose of exchanging information or sharing resources.
Networks vary in size, some are within a single room,
others span continents.
Ping
Layer 2
Packet Internet Groper. An Internet utility used to
determine whether a particular IP address is online. It is
used to test and debug a network by sending out a
packet and waiting for a response.
Data Link layer in the ISO 7-Layer Data Communications
Protocol. This is related directly to the hardware
interface for the network devices and passes on traffic
based on MAC addresses.
Power over Ethernet
Link Aggregation
PoE technology describes a system to transmit electrical
See Trunking.
power, along with data, to remote devices over standard
twisted-pair cable in an Ethernet network. This
technology is useful for powering IP telephones, wireless
LAN access points, network cameras, network hubs,
embedded computers, and other appliances where it
would be inconvenient, expensive or infeasible to supply
power separately. It works with an unmodified Ethernet
cabling infrastructure.
MAC
Media Access Control. A protocol specified by the IEEE
for determining which devices have access to a network
at any one time.
MAC Address
Media Access Control Address. Also called the
Protocol
hardware, physical or Ethernet address. A layer 2
address associated with a particular network device.
Most devices that connect to a LAN have a MAC
address assigned to them as they are used to identify
other devices in a network. MAC addresses are 6 bytes
long.
A set of rules for communication between devices on a
network. The rules dictate format, timing, sequencing
and error control.
RJ-45
A standard connector used to connect Ethernet
networks. The "RJ" stands for "registered jack."
Network
A Network is a collection of computers and other
computer equipment that are connected for the
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105
Server
Switch
A computer in a network that is shared by multiple end
A device that interconnects several LANs to form a
single logical LAN that comprises of several LAN
segments. Switches are similar to bridges, in that they
connect LANs of a different type; however they connect
more LANs than a bridge and are generally more
sophisticated.
stations. Servers provide end stations with access to
shared network services such as computer files and
printer queues.
SFP
Small Form Factor Pluggable (SFP) Connectors are based
on an open standard that enables hot swapping of
various type of fiber optic and copper-based transceivers
into the host equipment.
TCP/IP
Transmission Control Protocol/Internet Protocol.
This is the name for two of the most well-known
protocols developed for the interconnection of
networks. Originally a UNIX standard, TCP/IP is now
supported on almost all platforms, and is the protocol
of the Internet.
Subnet Address
An extension of the IP addressing scheme that allows a
site to use a single IP network address for multiple
physical networks.
TCP relates to the content of the data travelling through
a network — ensuring that the information sent arrives
in one piece when it reaches its destination. IP relates to
the address of the end station to which data is being
sent, as well as the address of the destination network.
Subnet Mask
A subnet mask, which may be a part of the TCP/IP
information provided by your ISP, is a set of four
numbers configured like an IP address. It is used to
create IP address numbers used only within a particular
network (as opposed to valid IP address numbers
recognized by the Internet, which must assigned by
InterNIC).
Traffic Monitoring
Enables the monitoring of port traffic by attaching a
network analyzer to one switch port, in order to
monitor the traffic of other ports on the Switch.
Subnets
Trunking
A network that is a component of a larger network.
A method which specifies how to create a single
high-speed logical link that combines several
lower-speed physical links.
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106
GLOSSARY
VLAN
A Virtual LAN is a collection of network nodes that
share the same collision domain regardless of their
physical location or connection point in the network. A
VLAN serves as a logical workgroup with no physical
barriers, and allows users to share information and
resources as though located on the same LAN.
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108
INDEX
P
T
password
port settings
R
U
repair authorization number by FAX,
user name
V
viewing
S
SFP transceivers
Switch
W
Web interface
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