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
CONTENTS
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
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
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
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.
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
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
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.
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.
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.
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.
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
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.
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.
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.
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.
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).
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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:
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.
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,
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:
■
■
■
■
■
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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)
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
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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