3Com® Switch 4500 Family
Getting Started Guide
Switch 4500 26-Port
Switch 4500 50-Port
Switch 4500 PWR 26-Port
Switch 4500 PWR 50-Port
www.3Com.com
Part No. 10012034, Rev. AB
Published: April, 2007
3Com Corporation
350 Campus Drive
Marlborough, MA
USA 01752-3064
Copyright © 2006-2007, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any
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CONTENTS
ABOUT THIS GUIDE
Before You Start 7
Conventions 8
Related Documentation 8
Documentation Comments 8
1
INTRODUCING THE
SWITCH 4500 FAMILY
About the Switch 4500 12
Summary of Hardware Features 13
Switch 4500 — Front View Detail 13
10BASE-T/ 100BASE-TX Ports 15
Gigabit Ports 15
Console Port 16
Unit LED 17
LEDs 17
Switch 4500 — Rear View Detail 19
Power Socket 19
Open Book Warning Labels 19
Redundant Power System Socket 20
Default Settings 20
2
INSTALLING THE SWITCH
Package Contents 23
Important Steps Before Proceeding 24
Connecting a Redundant Power Supply to your Switch 4500 PWR
Specifying the Redundant Power System 27
Connecting the Switch to the Redundant Power System 28
Connecting the Earthing Cable 30
RPS LED 30
24
Using Power over Ethernet 30
The Power-up Sequence 32
Powering-up the Switch 4500 32
Checking for Correct Operation of LEDs 32
Choosing the Correct Cables for the 1000BASE-X SFP Ports
SFP Operation 34
Approved SFP Transceivers 34
Inserting an SFP Transceiver 35
Removing an SFP Transceiver 35
Packing and Shipping the Switch 4500 36
3
33
SETTING UP FOR MANAGEMENT
Methods of Managing a Switch 38
Command Line Interface Management 38
Command Line Interface Management using SSH 39
Web Interface Management 39
SNMP Management 39
Setting Up Overview 40
IP Configuration 41
Preparing for Management 42
Manually Configuring IP Information 43
Connecting to the Console Port 43
Connecting to a Front Panel Port 46
Viewing Automatically Configured IP Information 49
Using 3Com Network Director 50
Connecting to the Console Port 50
Setting Up Command Line Interface Management 52
User Interface Overview 52
CLI Management via the Console Port 52
CLI Management over the Network 52
Setting Up Command Line Interface Management using SSH
Setting Up Web Interface Management 54
Pre-requisites 54
Web Management Over the Network 55
Setting Up SNMP Management V1 or V2 55
Pre-requisites 56
Default Users and Passwords 56
53
4
CREATING A STACK
How To Interconnect Units 59
Guidelines For Interconnecting Units 60
Unit Numbering within the Stack 61
5
PROBLEM SOLVING
Solving Problems Indicated by LEDs 64
Solving Hardware Problems 65
Solving Communication Problems 67
Solving Stack Formation Problems 69
6
UPGRADING SOFTWARE
The Contents of the Executable File 72
Upgrading from the Command Line Interface
Introduction 72
Backup 74
TFTP 74
FTP
(via a network port) 76
XModem (via the console cable) 77
Upgrading from the Bootrom Interface 78
Introduction 78
TFTP 80
FTP 80
XModem 81
Bootrom Upgrade 82
Bootrom Upgrade
via TFTP 83
Bootrom Upgrade
via FTP 83
Bootrom Upgrade
via XModem 84
A
PIN-OUTS
Null Modem Cable 87
PC-AT Serial Cable 87
Modem Cable 88
72
Ethernet Port RJ-45 Pin Assignments
B
TECHNICAL SPECIFICATIONS
Switch 4500 (26 Port) 91
Switch 4500 (50 Port) 92
Switch 4500 PWR (26 Port)
Switch 4500 PWR (50 Port)
RPS 95
Earthing Lead 95
C
88
93
94
OBTAINING SUPPORT FOR YOUR PRODUCT
Register Your Product 97
Purchase Value-Added Services 97
Troubleshoot Online 98
Access Software Downloads 98
Telephone Technical Support and Repair
Contact Us 99
INDEX
98
ABOUT THIS GUIDE
This guide provides all the information you need to install and use the
following switches in their default state:
■
Switch 4500 26-Port (3CR17561-91)
■
Switch 4500 50-Port (3CR17562-91)
■
Switch 4500 PWR 26-Port (3CR17571-91)
■
Switch 4500 PWR 50-Port (3CR17572-91)
All procedures described in this guide apply to all models except where
stated.
The guide is intended for use by network administrators who are
responsible for installing and setting up network equipment;
consequently, it assumes a basic working knowledge of LANs (Local Area
Networks).
Before You Start
The Release Notes provide important information about the current
software release, including new features, modifications, and known
problems. You should read the Release Notes before installing the Switch
in your network.
If the information in the Release Notes differ from the information in this
guide, follow the instructions in the Release Notes.
The latest versions of user guides and release notes are available in Adobe
Acrobat Reader Portable Document Format (PDF) on the 3Com
World Wide Web site:
http://www.3com.com/
8
ABOUT THIS GUIDE
Conventions
Table 1 lists conventions that are used throughout this guide.
Table 1 Notice Icons
Icon
Related
Documentation
Description
Information note
Information that describes important features or
instructions
Caution
Information that alerts you to potential loss of data or
potential damage to an application, system, or device
Warning
Information that alerts you to potential personal injury
In addition to this guide, each Switch documentation set includes the
following:
■
Switch 4500 Configuration Guide
This guide contains information on the features supported by your
Switch and how they can be used to optimize your network.
■
Switch 4500 Quick Reference Guide
This guide contains:
■
■
Documentation
Comments
Notice Type
a list of the features supported by the Switch.
a summary of the command line interface commands for the
Switch. This guide is also available under the Help button on the
web interface.
■
Switch 4500 Command Reference Guide
This guide provides detailed information about the web interface and
command line interface that enable you to manage the Switch
■
Release Notes
These notes provide information about the current software release,
including new features, modifications, and known problems. The
Release Notes are supplied in hard copy with your Switch.
Your suggestions are very important to us. They will help make our
documentation more useful to you. E-mail comments about this
document to 3Com at:
pddtechpubs_comments@3com.com
Documentation Comments
9
Please include the following information when commenting:
■
Document title
■
Document part number (on the title page)
■
Page number (if appropriate)
Example:
Part Number 10015034 Rev. AB
Switch 4500 Family Getting Started Guide
Page 21
We can only respond to comments and questions about 3Com product
documentation at this e-mail address. Please direct all questions related
to technical support or sales in the first instance to your network supplier.
10
ABOUT THIS GUIDE
1
INTRODUCING THE
SWITCH 4500 FAMILY
This chapter contains introductory information about the Switch 4500
and how it can be used in your network. It covers summaries of hardware
and software features and also the following topics:
■
About the Switch 4500
■
Switch 4500 — Front View Detail
■
Switch 4500 — Rear View Detail
■
Default Settings
CHAPTER 1: INTRODUCING THE SWITCH 4500 FAMILY
The Switch 4500 Family are mixed media devices. Table 2 summarizes
what each Switch consists of:
48
2*
-48V DC RPS Input
Switch 4500 50 Port
2*
RJ-45 Console Port
24
1000BASE-T SFP Transceiver
Switch 4500 26 Port
1000BASE-X SFP Ports
Switch 4500 Family
10BASE-T\1000BASE-TX\1000BASE-T Ports
Table 2 Switch 4500 Family Hardware
10BASE-T\100BASE-TX PoE Ports
About the Switch
4500
10BASE-T\100BASE-TX Ports
12
1
2*
2*
2†
1
Switch 4500 PWR 26 Port
24
2*
2*
2†
1
1
Switch 4500 PWR 50 Port
48
2*
2*
2†
1
1
* Combo SFP and 10/100/1000 Ports
† 1000BASE-T SFP transceiver installed in last two 1000BASE-X SFP ports
The Switch 4500 Family provides workgroup connectivity at 10- and
100-Mbps, and high-speed Gigabit ports for stacking, uplinks to a
backbone, or for server connections. With stacking, you can add
additional Switch 4500s as your network grows while preserving ease of
management.
For information about using the software features of the Switch, refer to
the “Command Reference Guide” on located on 3Com’s Web site at
www.3com.com.
Switch 4500 — Front View Detail
Summary of
Hardware Features
13
Table 3 summarizes the hardware features that are supported by the
Switch 4500.
Table 3 Hardware Features
Feature
Switch 4500
Addresses
Up to 8,000 supported
Auto-negotiation
Supported on all non-SFP ports
Forwarding Modes
Store and Forward
Duplex Modes
Half and full duplex on all ports
Auto MDI/MDIX
Supported on all ports. If fiber SFP transceivers are
used, Auto MDIX is not supported.
Flow Control
In full duplex operation all ports are supported
Traffic Prioritization
Supported (using the IEEE Std 802.ID, 1998 Edition):
Eight traffic queues per port
Power over Ethernet
Supported on 10/100 ports (3CR17571-91 and
3CR17572-91 only)
Ethernet and Fast Ethernet Auto-negotiating 10BASE-T/100BASE-TX ports
Ports
Switch 4500 —
Front View Detail
Gigbait Ethernet Ports
Auto-neogotiating 10BASE-T/100BASE-TX/
1000BASE-T ports (3CR17561-91) only
SFP Ethernet Ports
Supports fiber Gigabit Ethernet short-wave (SX),
long-wave (LX), long-haul (LH70) and copper (T)
transceivers in any combination.
RPS Supplemental
PoE Power
Connects to -48v DC supply (3CR17571-91 and
3CR17572-91 only)
Mounting
19-inch rack or stand-alone mounting
Figure 1 Switch 4500 26-Port — front view
Port Status LEDs
Speed: (100Base-TX) Green = 100Mbps Yellow = 10Mbps (1000Base-X) Green = 1000Mbps Yellow = 10/100Mbps
Console Port
Unit LED
3CR17561-91 SuperStack 3 Switch 4500 26-Port
Duplex: Green = Full Duplex, Yellow = Half Duplex
25
10/100BASE-TX
10/100BASE-TX Ports
26
1000BASE-X
27/25
28/26
10/100/1000BASE-T
1000BASE-X
Combo Port
Pair
10/100/1000BASE-T
Combo Port Pair
Power LED
14
CHAPTER 1: INTRODUCING THE SWITCH 4500 FAMILY
Figure 2 Switch 4500 50-Port — front view
Port Status LEDs
Speed:Green = 100Mbps, Yellow = 10Mbps
Console Port
Unit LED
PWR LED
3CR17562-91 SuperStack 3 Switch 4500 50-Port
Duplex:Green = Full Duplex, Yellow = Half Duplex
49
51/49
50
52/50
PWR
RPS
RPS LED
1000BASE-X SFP Ports
(Two pairs of Combo Ports
fitted with two1000BASE-T SFP
transceivers in last two ports)
10/100BASE-TX Ports
Figure 3 Switch 4500 26-Port PWR - front view
Port Status LEDs
Speed: (100Base-TX) Green = 100Mbps Yellow = 10Mbps
Duplex: Green = Full Duplex, Yellow = Half Duplex
RPS LED
Console Port
Unit LED
3CR17571-91 SuperStack 3 Switch 4500 PWR 26-Port
Power: Green = Delivering Power, Yellow = Fault, Flashing Green = Over Budget
25
26
27/25
28/26
Mode
Green=Speed
Yellow=Duplex
Flashing=PoE
RPS
PWR
10/100BASE-TX
1000Base-X SFP Ports
10/100BASE-TX Ports
(Two pairs of Combo Ports
fitted with two 1000BASE-T
SFP transceivers in last two ports)
Mode LED
Power LED
Console Port
Unit LED
Figure 4 Switch 4500 50-Port PWR - front view
Port Status LEDs
Speed:Green = 100Mbps, Yellow = 10Mbps
Duplex:Green = Full Duplex, Yellow = Half Duplex
Power:Green = Deliverng Power. Yellow=Fault, Flashing Green=Over Budget
PWR LED
Mode LED
Mode
Green=Speed
Yellow=Duplex
Flashing=PoE
3CR17572-91 SuperStack 3 Switch 4500 PWR 50-Port
49
50
51/49
52/50
PWR
RPS
RPS LED
1000BASE-X SFP Ports
10/100BASE-TX Ports
(Two pairs of Combo Ports
fitted with two 1000BASE-T
SFP transceivers in last two ports)
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.
Switch 4500 — Front View Detail
15
10BASE-T/
100BASE-TX Ports
The Switch 4500 has 24 or 48 auto-negotiating 10BASE-T/100BASE-TX
ports configured as Auto MDIX (cross-over). These ports automatically
provide the appropriate connection. Alternatively, you can manually set
these ports to 10BASE-T half-duplex, 10BASE-T full0-duplex, 100BASE-TX
half-duplex or 100BASE-TX full-duplex. The maximum segment length is
100 m (328 ft) over Category 5 twisted pair cable.
Gigabit Ports
Switch 4500 10/100 Ethernet models support two simultaneous Gigabit
connections. Each switch has four Gigabit ports, arranged in two pairs
called “dual-personality combo port pairs.” Only one port in each pair
can be activeat a time.
The paired ports for the Switch 4500 26 Port and PWR 26 Port are:
■
25 and 27
■
26 and 28
The paired ports for the Switch 4500 50 Port and PWR 50 Port are:
■
49 and 51
■
50 and 52
By default, the ports are enabled as follows for the 26-Port switches:
■
Port 25 = active; Port 27 = inactive
■
Port 26 = active; Port 28 = inactive
By default, the ports are enabled as follows for the 50-Port switches:
■
Port 49 = active; Port 51 = inactive
■
Port 50 = active; Port 52 = inactive
To change which port is active, issue the undo shutdown command on
the inactive port. This will enable the previously inactive port and disable
its pair. Issuing this command will cause the switch to reboot.
A Gigabit connection can be either copper-based 1000Base-T or
SFP-based fiberoptic connection. On the Switch 4500 10/100 26 Port
unit, there are two SFP slots and two 1000Base-T ports. On the Switch
4500 PWR 26 Port, 50 Port, and PWR 50 Port models all the physical
Gigabit ports are SFP slots.
16
CHAPTER 1: INTRODUCING THE SWITCH 4500 FAMILY
Two 1000Base-T SFP transceivers are included with these units. These SFP
transceivers can be inserted in any of the four SFP slots to provide copper
Gigabit connectivity. If you install these in the inactive ports, then you will
need to issue the undo shutdown command on those ports to make
them active.
SFP (Small Form Factor Pluggable, or mini-GBIC) ports support fiber
Gigabit Ethernet short-wave (SX), long-wave (LX), long-haul (LH70) and
copper (T) 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.
The default state for these ports is auto-negotiation enabled, where the
speed, duplex and flow control modes are negotiated. As the speed and
duplex modes are fixed by the media type, only the flow control is
negotiated with the link partner. Alternatively, auto-negotiation can be
disabled (except 1000BASE-T which auto-negotiation is mandatory) and
the flow control setting can be manually configured.
Console Port
The console port allows you to connect a terminal and perform remote or
local out-of-band management. As the console port on the Switch is an
RJ-45 port, you will need to connect an RJ-45 to DB9 converter cable to a
standard null modem cable in order to connect a terminal.
Switch 4500 — Front View Detail
17
Unit LED
The Unit LED is a seven segment display visible on the front of the Switch.
The Unit LED can be used to indicate the unit number in a fabric, POST
test ID and software upgrade information. In the unlikely event of a
hardware fault occurring, the Unit LED may be used to help diagnose the
problem. For information on using the Unit LED for problem solving, see
“Solving Problems Indicated by LEDs” on page 64
LEDs
Table 4 lists LEDs visible on the front of the Switch, and how to read their
status. For information on using the LEDs for problem solving, see
“Solving Problems Indicated by LEDs” on page 64.
Table 4 LED Behavior
LED
Color
Indicates
Unit LED
Green
Power On Self Test (POST) is in progress. During POST a the
test ID number appears in the Unit LED (seven segment
display).
or
Software download is in progress. During software
download, a clockwise cycling bar appears in the Unit LED.
Green flashing
The Switch has failed POST. The Unit LED flashes the
number of the test that has failed.
Green flashing ‘f’ There has been a fan failure.
Green flashing ‘t’ The Switch is over temperature and unit temperature is
critical.
PWR LED
Green
The Switch is powered-up and operating normally.
Green flashing
Self Test (POST) or Software Download is in progress.
Yellow flashing
One or more ports have failed POST.
Red
The Switch has failed its Power On Self Test.
Off
The Switch is not receiving power or there is a fault with the
Power Supply Unit.
Mode LED (3CR17571-91 and 3CR17572-91 only)
Speed Green
10/100 Port Speed and Activity, 1000 SFP Status and
Activity, or Stack Status and Activity.
Duplex Yellow
10/100 Duplex and Activity, 1000 SFP Duplex and Activity,
or Stack Activity
PoE
10/100 Port showing PoE Information
Red
18
CHAPTER 1: INTRODUCING THE SWITCH 4500 FAMILY
LED
Color
Indicates
RPS LED (3CR17571-91 and 3CR17572-91 only)
Green
AC and RPS supply connected.
Yellow
AC failed or not connected. RPS supply is OK.
Off
There is no RPS supply connected.
10BASE-T/100-TX Port LEDs
Speed Green
A high speed (100 Mbps) link is present, blinking off for
every packet received or transmitted.
Yellow
A low speed (10 Mbps) link is present, blinking off for every
packet received or transmitted.
Yellow Flashing
The port has failed POST.
Off
No link is present.
Duplex (3CR17571-91 and 3CR17572-91 only)
Green
Full duplex, blinking off for every packet received or
transmitted.
Yellow
Half duplex, blinking off for every packet received or
transmitted.
Yellow flashing
The port has failed POST.
Off
No link is present.
PoE (3CR17571-91 and 3CR171572 only)
Green
Power is being delivered to the port.
Green flashing
Port power has exceeded limit or is unable to supply power
due to unit being over budget.
Yellow
PoE error, no power supplied on port.
Yellow flashing
The port has failed post.
Off
No power is being delivered.
1000BASE-X SFP Port LEDs
Speed Green
A high speed (1000 Mbps) link is present.
Yellow Flashing
Port failed POST.
Off
No link is present.
Duplex (3CR17571-91 and 3CR17572-91 only)
Green
Full duplex packets are being transmitted/received on the
port.
Yellow
Half duplex packets are being transmitted/received on the
port.
Yellow flashing
Port failed POST.
Off
No link is present.
Switch 4500 — Rear View Detail
Switch 4500 — Rear
View Detail
19
Figure 5 Switch 4500 — rear view
Open Book Warning Labels
Power Socket
~100-240V; 50/60Hz; 1A
Earthing Screw
Figure 6 Switch 4500 PWR - rear view
Open Book Warning Labels
Power Socket
NULL
~100-240V; 50/60Hz; 7.0A
-53 -55V;19.5A
Redundant Power System Socket
Earthing Screw
Power Socket
The Switch automatically adjusts its power setting to any supply voltage
in the range 100-240 VAC.
Open Book Warning
Labels
Before installing or removing any components from the Switch 4500 or
carrying out any maintenance procedures, you must read the safety
information provided in Appendix A of this guide.
AVERTISSEMENT: Avant d'installer ou d'enlever tout composant des
commutateurs de la gamme Switch 4500 ou d'entamer une procédure
de maintenance, lisez les informations relatives à la sécurité qui se
trouvent dans l'annexe A de ce guide.
VORSICHT:Bevor Sie Komponenten der Switch 4500-Baureihe
installieren oder deinstallieren und bevor Sie Wartungsarbeiten
ausführen, müssen Sie die in Anhang A dieses Handbuchs aufgeführten
Sicherheitshinweise lesen.
ADVERTENCIA: Antes de instalar o extraer cualquier componente del
Switch 4500 Family o de realizar tareas de mantenimiento, debe leer la
información de seguridad facilitada en el Apéndice A de esta guía.
20
CHAPTER 1: INTRODUCING THE SWITCH 4500 FAMILY
AVVERTENZA: Prima di installare o rimuovere qualsiasi componente
dello Switch 4500 Family o di eseguire qualsiasi procedura di
manutenzione, leggere le informazioni di sicurezza riportate
nell'Appendice A di questa guida.
OSTRZEŻENIE: Przed instalacją lub usunięciem jakichkolwiek
elementów z przełącznika z rodziny 4500 lub przeprowadzeniem prac
konserwacyjnych należy zapoznać się z informacjami o bezpieczeństwie
zawartymi w Załączniku A niniejszego podręcznika.
Redundant Power
System Socket
Default Settings
Provides supplemental power for PoE ports (up to 15.4w on all ports) and
redundant power for powered devices and the Switch itself.
Table 5 shows the default settings for the Switch 4500 Family:
Table 5 Default Settings
Feature
Switch 4500
Automatic IP Configuration
Enabled
Port Status
Enabled
Port Speed
Auto-negotiated
Duplex Mode
Auto-negotiated
Power over Ethernet
Enabled (3CR17571-91 and 3CR17572-91 only)
Flow Control
Auto-negotiated
Broadcast Storm Control
Enabled
Virtual LANs (VLANs)
All ports belong to the untagged Default VLAN
(VLAN 1) with IEEE Std 802.1Q-1998 learning
operational
Management VLAN
Any VLAN for all units.
Link Aggregation Control
Protocol (LACP)
Disabled per port
IP Multicast Filtering
Filtering enabled
Rapid Spanning Tree Protocol Enabled
Fast Start
Enabled on front panel ports
RMON Alarm
Enabled
Default Settings
21
Feature
Switch 4500
Traffic Prioritization
All ports prioritize NBX VoIP traffic (LAN and IP).
All ports set to “best effort” for all other traffic.
Port Security
Disabled per port
Configuration Save and
Restore
Disabled
22
CHAPTER 1: INTRODUCING THE SWITCH 4500 FAMILY
2
INSTALLING THE SWITCH
This chapter contains supplemental information on setting up your Switch
4500. These details are intended to be read together with the printed
documents that accompany your switch.
Package Contents
■
Switch unit
■
Unit Information Labels
■
Warranty Information
■
RPS Flyer
■
Power Cord
■
Console Cable (RJ-45)
■
RPS -48V DC Connector and backshell (3CR17571-91 and
3CR17572-91 only)
■
RPS Connector Cable Tie
■
Earthing Lead
■
2 x Front securing brackets
■
4 x Screws
■
2 x Back securing brackets and 2 x Screws (3CR17571-91 and
3CR17572-91 only)
■
4 x Rubber feet
■
Important Information Notice
■
Safety and Regulatory Information
24
CHAPTER 2: INSTALLING THE SWITCH
Important Steps
Before Proceeding
Connecting a
Redundant Power
Supply to your
Switch 4500 PWR
Before proceeding, make sure to access the Switch 4500 information on
3Com’s Web site at www.3Com.com and:
■
Read the document entitled “3Com Switch Family Safety and
Regulatory Information,” which contains information on how to
set-up your Switch 4500 and all the safety and regulatory warnings.
■
Refer to the document entitled “Important Information” for
instructions on how to retrieve the latest documentation and software
for your switch.
■
Set-up your switch in the desired location.
■
Download the documentation to your local hard-drive or to an
accessible server.
The Switch 4500 PWR 26 and 50 port have a -48V DC Redundant Power
Supply socket that can be used in addition to the standard AC connection
of the switch. If you intend to use this DC connection, please read this
section.
WARNING: The installation of the Redundant Power Supply (RPS) should
only be carried out by properly trained and qualified personnel.
WARNING: These instructions must be read in conjunction with the RPS
flyer and the safety and installation instructions supplied with your RPS.
WARNING: When powering any Switch 4500 PWR from an RPS, the unit
must be earthed (grounded). This can be achieved by either connecting
the power cord to the unit or by connecting the earth terminal on the
rear of the unit to a reliable electrical earth, or by connecting both. You
must ensure that the earth connection is made before connecting the DC
supply from the RPS.
3Com Switches which support -48V DC RPS inputs, that are PoE enabled,
can only be powered by an RPS which complies with the isolation
requirements of IEEE-Std 802.3af. Non PoE enabled switches do not have
this restriction.
WARNING: A standard 'positive-earthed' -48V redundant power system
suitable for use with telecommunications equipment should not be used
Connecting a Redundant Power Supply to your Switch 4500 PWR
25
with the 3Com Power-over-Ethernet (PoE) network switches. In order to
meet the IEEE 802.3af (PoE) specification, the -48V output must be
isolated from earth (ground) and meet the isolation requirements in that
specification.
26
CHAPTER 2: INSTALLING THE SWITCH
WARNING: Any RPS must be approved as a SELV output in accordance
with IEC 60950-1/UL 60950-1/EN 60950-1.
WARNING: The characteristics of the Switch 4500 DC supply input are
given in Appendix B on page 91.
The Switch 4500 PWR units can be powered in three different ways:
■
AC Mains only — does not offer any power redundancy. If the AC
mains supply or the AC power supply fail, the Switch will power off.
■
AC Mains and -48V DC (primary supply) — the internal AC supply
acts as the backup in the event of a DC power failure.
■
DC only — the Switch does not need an AC supply and the resiliency
is provided by the DC supply. This is useful in an environment where
only DC power is available.
The RPS provides three main benefits to the customer:
■
Power Redundancy — if a Switch is powered from the mains supply
unit, a failure of the internal power supply will cause the Switch to fail.
This can be overcome by connecting both the AC and DC RPS supplies
to the Switch. Additional redundancy can also be added to the DC
power by using (N+1) DC power supplies to further increase the
availability of the system.
■
Uninterruptible Power — the system allows easy connection and
maintenance of batteries to the RPS shelf to further increase the
availability of the system.
■
Additional Power to PoE Ports — the internal AC Power Supply of
a PoE Switch can provide enough power for most network
applications. The RPS can be used to supplement additional power (up
to a maximum of 15.4W), including full backup of all PoE devices on
the network.
Table 6 below, outlines the behavior of the Switch when changes occur to
the power system, such as removing the AC mains cable when the RPS is
attached. The responses to the different power inputs are controlled by
the Switch’s internal power supply and not by the RPS.
Connecting a Redundant Power Supply to your Switch 4500 PWR
27
Table 6 Switch Power Inputs
Power Input before Power Input after
User Intervention
User Intervention
Correct Response
AC mains and RPS
RPS only
The unit remains powered by the RPS.
AC mains and RPS
AC mains only
The unit is powered by the AC mains.
PoE dropped on all ports, however
the unit does not reset. PoE restarts
powered by the remaining power
from the AC mains. PoE ports will be
dropped depending on their preset
priority level.
The total power available to the
Switch may be less than when
powered from the RPS. Some PoE
ports may be dropped as they are
unable to obtain the power they
require.
Specifying the
Redundant Power
System
RPS only
AC mains and RPS
The unit remains powered by the RPS.
AC mains
AC mains and RPS
The unit is powered by the RPS. PoE
ports can be added.
3Com’s redundant power solution allows the use of any off-the-shelf
-48V DC RPS that meets the requirements defined in Appendix B on
page 91.
For an approved vendor list, more details about purchasing the 3Com
recommended RPS and a full set of requirements go to:
http://www.3Com.com/RPS
The 3Com recommended RPS generates -48V DC power using power
supply units (or rectifiers). The outputs of the rectifier(s) are connected
together so that the total -48V power available can be increased by
adding additional rectifiers. For example, three 1500W rectifiers can
provide up to 4500W. Hot removal or insertion of a rectifier will not affect
the -48V DC output voltage.
Table 7 shows an example of the total power available from a number of
1500W rectifiers.
A minimum of two rectifiers are required for each shelf to provide N+1
rectifier redundancy.
28
CHAPTER 2: INSTALLING THE SWITCH
Table 7 Power Availability
Rectifiers
1
2
3
4
5
6
No Rectifier
Redundancy
1500W
3000W
4500W
6000W
7500W
9000W
N+1 Rectifier
Redundancy
-
1500W
3000W
4500W
6000W
7500W
The -48V DC power distribution provides the mechanism to connect to
the Switch 4500 PWR. The distribution consists of a number of circuit
breakers and connection terminals for the positive (common) and
negative -48V outputs. Each Switch 4500 PWR must be individually
connected to a circuit breaker terminal.
A battery can also be connected to battery terminals prior to the DC
power distribution to provide uninterrupted power in order to protect
against the loss of AC mains power.
3Com’s RPS solution uses -48V DC power distribution. The RPS system
provides bulk -48V DC power that is separately distributed to a number
of network switches.
Each RPS consists of a shelf which can house from one to six rectifiers, a
Distribution Module and a Management Module.
Connecting the
Switch to the
Redundant Power
System
When connecting the RPS to the Switch, the circuit breaker and 2-core
cable need to be matched to the power rating of the Switch. Table 8
shows the recommended circuit breaker and cable rating for the Switch
4500. The recommended cable length should not exceed 3 metres (9.84
feet).
Table 8 Switch 4500 Circuit Breaker and Cable Ratings
Circuit Breaker Minimum 2-Core Cable Diameter
Non PoE
6A C type
18 AWG (solid or stranded cable)
PoE
25A C type
12 AWG (solid or stranded cable)
WARNING: RPS Manufacturers recommendations must be followed
when connecting the cable to the RPS.
Connecting a Redundant Power Supply to your Switch 4500 PWR
29
WARNING: Ensure that the circuit breaker in the RPS is in the open (off)
position when connecting the cable to the RPS and the cable and
connector to the Switch.
WARNING: You must ensure that the positive terminal on the Switch is
connected to the positive (common) terminal of the RPS and that the
negative terminal on the Switch is connected to the negative (circuit
breaker) terminal of the RPS.
Figure 7 shows how to connect the power supply to the RPS socket in the
back of the Switch. Use the cable tie supplied with your Switch to support
the cable at the rear of the RPS connector as shown.
Figure 7 RPS Connection to the Switch
+ -
NULL
.0A
A
Hz;1.0
0V;2
-48 -6
60
0V;50/
100-24
~
Cable Tie
NULL
-48 -60V;2 0A
Null
Pinout
+
When the RPS is connected to the Switch, the circuit breaker in the RPS
can be moved to the closed (on) position and the Switch will be powered
by the -48V DC power.
30
CHAPTER 2: INSTALLING THE SWITCH
The -48V DC power will take priority over the AC mains and will power
the Switch if it is connected.
Connecting the
Earthing Cable
Use the earthing cable that accompanies your Switch if the length is
suitable. Alternatively use the earthing cable specification as defined in
Appendix B on page 91.
The earthing cable is only required if the Switch is powered by the RPS
only.
The recommended cable length should not exceed 3 metres (9.84 feet).
RPS LED
The RPS status LED on the front of the Switch 4500 PWR indicates the
status of the RPS and AC supplies as shown in Table 9.
Table 9 RPS LED Colors
Using Power over
Ethernet
Color
State
Green
AC and RPS supply connected.
Yellow
AC failed or not connected. RPS supply is ok.
Off
There is no RPS supply connected.
The Switch 4500 Power over Ethernet (PoE) units can supply power to
any IEEE 802.3af compliant device through any of its 10/100 ports over a
Category 5 or Category 5e Ethernet cable. The same cable connects the
device to the network.
Power over Ethernet is a self-configuring protocol. When you plug a PoE
compliant device into one of the ports on the Switch, the Switch will
supply the power required to the device, providing that the total power
budget for the Switch would not be exceeded by doing so.
A PoE Switch combines the functionality of a standard Ethernet Switch
with a single power supply that can power multiple devices. Using a PoE
Switch has the following advantages over an unpowered network:
■
Reduced Cabling — a PoE (802.3af) compliant device which has its
power supplied over its ethernet cable does not require a separate
power supply. If, for example, the Switch is used to connect a 3Com
11 Mbps Wireless LAN Access Point 8500 to the network, then only a
Connecting a Redundant Power Supply to your Switch 4500 PWR
31
network cable is required to provide both power and network
connectivity.
■
Increased Reliability — a device powered by a PoE Switch will be
able to take advantage of the facilities available to the Switch. The
Switch can be fitted with a redundant power supply or uninterruptible
power supply, increasing its uptime.
The Switch supports resistor detection according to IEEE 802.3af and
pre-standard detection methods.
The Switch 4500 supports 3Com 802.3af equipment. For the latest list of
supported devices, refer to the product page on the 3Com web site at
http://www.3com.com/
For further information on Power over Ethernet, refer to the Power over
Ethernet Configuration chapter in the Configuration Guide available on
3Com’s Web site. Power over Ethernet management is available using the
web interface or the command line interface (CLI).
32
CHAPTER 2: INSTALLING THE SWITCH
The Power-up
Sequence
Powering-up the
Switch 4500
The following sections describe how to get your Switch 4500
powered-up and ready for operation.
Use the following sequence of steps to power-up the Switch.
1 Plug the power cord into the power socket at the rear of the Switch.
2 Plug the other end of the power cord into your power outlet.
The Switch powers-up and runs through its Power On Self Test (POST),
which takes approximately one minute.
Checking for Correct
Operation of LEDs
During the Power On Self Test, all ports on the Switch are disabled and
the LEDs light. The PWR LED will flash green during the POST.
When the POST has completed, check the PWR LED to make sure that
your Switch is operating correctly. Table 10 shows possible colors for the
LED.
Table 10 Unit Status Colors
Color
State
Green
The Switch is powered-up and operating normally.
Green flashing
Self Test (POST) or Software Download is in progress
Red
The Switch has failed its Power On Self Test (POST).
Off
The Switch is not receiving power.
If there is evidence of a problem, see “Solving Problems Indicated by
LEDs” on page 64 for a list of suggested solutions.
CAUTION: The Switch has no ON/OFF switch; the only method of
connecting or disconnecting mains power is by connecting or
disconnecting the power cord.
WARNING: The Switch 4500 PWR supports Power over Ethernet on
10/100 ports only. These ports should only be used for Ethernet wiring
within the same building.
The Power-up Sequence
Choosing the Correct
Cables for the
1000BASE-X SFP Ports
33
The 1000BASE-SX SFP transceiver supports a direct connection to a
multi-mode fiber-optic cable. The 1000BASE-LX SFP transceiver supports
a direct connection to single-mode and multi-mode fiber-optic cables.
The 1000BASE-LH70 SFP transceiver supports a direct connection to a
single-mode fiber-optic cable and the 1000BASE-T SFP transceiver uses
Category 5 copper cabling with RJ-45 connectors and supports segment
lengths of up to 100 m (328 ft). Table 14 shows the range for each
connection:
Table 11 1000BASE-X SFP Port Cable Range
Fiber Type
Diameter
Modal
Transmission Range in meters
(microns) Bandwidth
(in feet)
(MHz . km)
1000BASE-SX
Multi-mode
62.5
160
2m - 220m (6.6 ft - 721.8 ft)
Multi-mode
62.5
200
2m - 275m (6.6 ft - 902.3 ft)
Multi-mode
50
400
2m - 500m (6.6 ft - 1640.5 ft)
Multi-mode
50
500
2m - 550m (6.6 ft - 1804.6 ft)
Multi-mode
62.5
500
2m - 550m (6.6 ft - 1804.6 ft)
Multi-mode
50
400
2m - 550m (6.6 ft - 1804.6 ft)
Multi-mode
50
500
2m - 550m (6.6 ft - 1804.6 ft)
Single-mode
9
-
2m - 10,000m (6.6 ft - 32, 810 ft)
9 core
-
2m - 70 km (6.6 ft - 43 miles)
1000BASE-LX
1000BASE-LH70
Single-mode
34
CHAPTER 2: INSTALLING THE SWITCH
SFP Operation
Approved SFP
Transceivers
The following sections describes how to select and use an SFP transceiver
in an SFP port.
The following list of approved Gigabit Ethernet SFP transceivers is correct
at the time of publication.
■
■
■
■
■
3CSFP91 SFP (1000BASE-SX)
3CSFP92 SFP (1000BASE-LX)
3CSFP93 SFP (1000BASE-T)
3CSFP93-4500 SFP (1000BASE-T)
3CSFP97 SFP (1000BASE-LH70)
The 3CSFP93-4500 is approved for use in the Switch 4500 only.
To access the latest list of approved SFP transceivers for the Switch on the
3Com Corporation World Wide Web site, enter this URL into your
internet browser: http://www.3com.com/transceiver
1000BASE-SX, 1000BASE-LX, 1000BASE-LH70 or 1000BASE-T SFP
transceivers must be matched with the correct cable type as follows:
■
1000BASE-SX SFP transceiver
Use this transceiver to connect Gigabit Ethernet SFP ports on the
Switch directly to a multimode fiber-optic cable.
■
1000BASE-LX SFP transceiver
Use this transceiver to connect Gigabit Ethernet SFP ports on the
Switch directly to a single-mode fiber-optic cable or to a multimode
fiber using a conditional launch cable.
■
1000BASE-LH70 SFP transceiver
Use this transceiver to connect Gigabit Ethernet SFP ports on the
Switch directly to a single-mode fiber-optic cable.
■
1000BASE-T SFP transceiver
This transceiver uses Category 5 copper cabling with RJ-45 connectors
and supports segment lengths of up to 100 m (328 ft).
If the SFP transceiver is faulty, it will not operate within the Switch. See
“Solving Hardware Problems” on page 65.
3Com recommends that you only use Gigabit Ethernet SFPs supplied by
3Com. If the SFP transceiver is invalid it will not be recognized by the
Switch.
SFP Operation
Inserting an SFP
Transceiver
35
Use the following sequence of steps to activate the SFP ports:
SFP transceivers are hot-insertable and hot-swappable. You can remove
them from and insert them into an appropriate SFP port without having
to power down the Switch.
1 The SFP transceiver is keyed and there is only one way in which it can be
installed correctly. It is not necessary to power-down your Switch.
2 Hold the transceiver so that the connector is toward you and the product
label is visible. Ensure the wire release lever is closed (in the upright
position).
3 Gently slide the transceiver into the SFP port until it clicks. If the
transceiver does not click into place, remove it, turn it over and re-insert.
4 Remove the plastic protective cover if fitted.
Figure 8 Inserting an SFP Transceiver
Product
label
Suitable port
on host Switch
5 Check the LEDs on the front of the Switch to ensure that it is operating
correctly. Refer to “LEDs” on page 17 for more information.
Removing an SFP
Transceiver
If you wish to remove the transceiver (it is not necessary to power-down
your Switch):
1 Disconnect the cable from the transceiver.
2 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;
the transceiver will then easily slide out.
36
CHAPTER 2: INSTALLING THE SWITCH
Packing and
Shipping the Switch
4500
This section describes how to correctly package your Switch 4500 should
you need to return the Switch to 3Com.
WARNING: The unit should be packaged safely to ensure that you do
not invalidate the repair.
Follow these steps to ensure that you package your unit correctly:
1 Orientate your Switch so that the back panel is on the left side (looking
down at the top of the unit) as shown in Figure 9.
2 Secure one of the polystyrene supports to the back panel side of the unit.
Secure the other support to the front panel side of the unit.
3 Place the unit in the box with the back panel next to the cable packaging.
Figure 9 Correct Orientation When Packing the Switch 4500
Polystyrene Supports
Cable Packaging
Back
Panel Side
of Unit
Front
Panel Side
of Unit
3Com Switch Unit
3
SETTING UP FOR MANAGEMENT
To make full use of the features offered by your Switch, and to change
and monitor the way it works, you have to access the management
software that resides on the Switch. This is known as managing the
Switch.
Managing the Switch can help you to improve the efficiency of the
Switch and therefore the overall performance of your network.
This chapter explains the initial set up of the Switch and the different
methods of accessing the management software to manage a Switch. It
covers the following topics:
■
Methods of Managing a Switch
■
Setting Up Overview
■
Manually Configuring IP Information
■
Viewing Automatically Configured IP Information
■
Setting Up Command Line Interface Management
■
Setting Up Command Line Interface Management using SSH
■
Setting Up Web Interface Management
■
Setting Up SNMP Management V1 or V2
■
Default Users and Passwords
38
CHAPTER 3: SETTING UP FOR MANAGEMENT
Methods of
Managing a Switch
Command Line
Interface
Management
To manage your Switch you can use one of the following methods:
■
Command line interface management
■
Command line interface management using SSH
■
Web interface management
■
SNMP management
Each Switch has a command line interface (CLI) that allows you to
manage the Switch from a workstation, either locally via a console port
connection (see Figure 10), or remotely over the network (see Figure 11).
Figure 10 CLI Management via the Console Port
Workstation
(with terminal emulation
software installed)
Switch
Console Port
Connection
Console Cable
Figure 11 CLI Management over the Network
Switch
Workstation
Connect over Network
via Telnet
Refer to “Setting Up Command Line Interface Management” on
page 52.
There are two main views in the CLI:
User View — this view is shown when you first connect to the Switch
and shows basic information about operation and statistics. The prompt
for user view is <4500>.
System View — this view enables you to configure the system
parameters. To display this view, from user view enter system-view.
The prompt for system view is [4500].
Methods of Managing a Switch
Command Line
Interface
Management using
SSH
Web Interface
Management
39
The Switch 4500 supports Secure Shell version 2.0 (SSHv2.0), allowing
secure access to the Command Line Interface of the Switch.
If you use SSH to administer your Switch and the network traffic is
intercepted, no passwords or configuration information will be visible in
the data. To securely administer the Switch using the Command Line
Interface you need a third party SSH client.
Each Switch has an internal set of web pages that allow you to manage
the Switch using a Web browser remotely over an IP network (see
Figure 12).
Figure 12 Web Interface Management over the Network
Switch
Workstation
Connect over Network
via web browser
Refer to “Setting Up Web Interface Management” on page 54.
SNMP Management
You can manage a Switch using any network management workstation
running the Simple Network Management Protocol (SNMP) as shown in
Figure 13. For example, you can use the 3Com Network Director
software, available from the 3Com website.
Figure 13 SNMP Management over the Network
SNMP Network Management
Workstation
Switch
Connect over Network
using SNMP
Refer to “Setting Up SNMP Management V1 or V2” on page 55.
CHAPTER 3: SETTING UP FOR MANAGEMENT
This section gives an overview of what you need to do to get your Switch
set up and ready for management when it is in its default state. The
whole setup process is summarized in Figure 14. Detailed procedural
steps are contained in the sections that follow. In brief, you need to:
■
Configure IP information manually for your Switch or view the
automatically configured IP information
■
Prepare for your chosen method of management
Figure 14 Initial Switch Setup and Management Flow Diagram
Plug and Play Setup
Power Up the Switch.
IP Information is automatically configured via
DHCP
See page 41
Do you want to manually
configure the IP information?
Yes
Initial IP Information Setup
Setting Up
Overview
How do you want to view the automatically
configured IP information?
How do you want to connect to the Switch?
Connect to the console port and use the
Command Line Interface.
See page 43
No
Connect to a front panel port
and use the Web Interface or
Command Line
Interface.
See page 43
Use 3Com Network
Director (3ND).
See page 50
Connect to the console
port and use the
Command Line
Interface.
See page 50
How do you want to manage your Switch? See page 38
Feature Management
40
Command Line Interface
Connect via the
console port.
See page 52
SNMP
See page 55
Connect over the
network via Telnet.
See page 52
Web Interface
Connect over the
network.
See page 55
Setting Up Overview
41
CAUTION: To protect your Switch from unauthorized access, you must
change all three default passwords as soon as possible, even if you do not
intend to actively manage your Switch. For more information on default
users and changing default passwords, see “Default Users and
Passwords” on page 56.
IP Configuration
You can use one of the following methods to allocate IP information to
your Switch (essential if you wish to manage your Switch across the
network).
Manual IP Configuration
When you configure the IP information, the Switch remembers the
information that you enter until you change it again.
You should use the Manual IP configuration method if:
■
you do not have a DHCP server on your network, or
■
you want to remove the risk of the IP address ever changing, or
■
your DHCP server does not allow you to allocate static IP addresses.
(Static IP addresses are necessary to ensure that the Switch is always
allocated the same IP information.)
For most installations, 3Com recommends that you configure the Switch
IP information manually. This makes management simpler and more
reliable as it is not dependent on a DHCP server, and eliminates the risk of
the IP address changing.
To manually enter IP information for your Switch, work through the
“Manually Configuring IP Information” section on page 43.
Automatic IP Configuration via DHCP
By default the Switch tries to configure itself with IP Information without
requesting user intervention. It tries to obtain an IP address from a DHCP
server on the network.
When using automatic IP configuration it is important that the IP address
of the Switch is static, otherwise you will not know what the IP address is
and it will be difficult to manage. Most DHCP servers allow static IP
addresses to be configured so that you know what IP address will be
allocated to the Switch. Refer to the documentation that accompanies
your DHCP server.
42
CHAPTER 3: SETTING UP FOR MANAGEMENT
For a detailed description of how automatic IP configuration operates,
refer to the Configuration Guide available on 3Com’s Web Site at
www.3com.com.
You should use the automatic IP configuration method if:
■
your network uses DHCP to allocate IP information, or
■
flexibility is needed. If the Switch is deployed onto a different subnet,
it will automatically reconfigure itself with an appropriate IP address,
instead of you having to manually reconfigure the Switch.
If the Switch is not allocated with an automatic IP address, the IP
configuration will be blank or shown as ‘’’’.
If you use the automatic IP configuration method, you need to discover
the automatically allocated IP information before you can begin
management. Work through the “Viewing Automatically Configured IP
Information” section on page 49.
Preparing for
Management
Once your Switch’s initial set up is complete you can set up your chosen
management method as described in “Methods of Managing a Switch”
on page 38.
For detailed information about the specific web interface operations and
command line interface commands and problem solving, refer to the
“Command Reference Guide” available on 3Com’s Web site at
www.3com.com.
Manually Configuring IP Information
Manually
Configuring IP
Information
Connecting to the
Console Port
43
You can manually configure the Switch IP information in the following
ways:
■
Connecting to the console port — connect a workstation using a
console cable to the console port of the Switch. You can then
manually enter IP information using the command line interface (CLI).
■
Connecting to a front panel port — connect a workstation using an
Ethernet cable to a front panel port of the Switch. You can then
manually enter IP information using the web interface or the
command line interface (CLI).
To set up your Switch manually you can make a connection to the console
port, (this example describes a local connection to the console port,
rather than one via a modem). You can do this whilst the Switch is offline,
that is, before you connect the Switch to a network, or whilst the Switch
is online, that is, connected to a network.
Pre-requisites
■
A workstation with terminal emulation software installed, such as
Microsoft Hyperterminal. This software allows you to communicate
with the Switch via the console port directly.
■
Documentation supplied with the terminal emulation software.
■
The console cable (RJ-45) supplied with your Switch.
You can find pin-out diagrams for the cable in Appendix A on page 87.
■
You need to have the following so that you can manually set up the
Switch with IP information:
■
IP address
■
subnet mask
■
default gateway
■
management VLAN ID, normally set to the default value (1)
44
CHAPTER 3: SETTING UP FOR MANAGEMENT
Connecting the Workstation to the Switch
1 Connect the workstation to the console port using the console cable as
shown in Figure 15.
Figure 15 Connecting a Workstation to the Switch via the Console Port
Workstation
(with terminal emulation
software installed)
Switch
Console Port
Connection
Console Cable
To connect the cable:
a Attach the RJ-45 connector on the cable to the console port of the
Switch.
b Attach the other end of the cable to the workstation and tighten the
retaining screws on the cable to prevent it from being loosened.
2 Open your terminal emulation software and configure the COM port
settings to which you have connected the cable. The settings must be set
to match the default settings for the Switch, which are:
■
19,200 baud (bits per second)
■
8 data bits
■
no parity
■
1 stop bit
■
no hardware flow control
Refer to the documentation that accompanies the terminal emulation
software for more information.
3 Power up the Switch. The Power on Self Test (POST) will now be
performed.
Setting Up the Switch with IP Information
You are now ready to manually set up the Switch with IP information
using the command line interface.
1 The command line interface login sequence begins as soon as the Switch
detects a connection to its console port.
If the login prompt does not begin immediately, press Return a few times
until it starts.
Manually Configuring IP Information
45
2 At the login and password prompts, enter admin as your user name and
press Return and at the password prompt press Return again. If you have
logged on correctly, <4500> should be displayed as shown in Figure 16.
Once you have logged in you will automatically be in User View.
Figure 16 User View Login
3 Enter the system-view command and Enter.
To confirm that you are in the System View, the following should be
displayed:
[4500]
4 Enter interface vlan 1 and Enter.
5 Enter the IP address and subnet mask for the Switch as follows:
ip address xxx.xxx.xxx.xxx mmm.mmm.mmm.mmm
and Enter.
(where xxx.xxx.xxx.xxx is the IP address and mmm.mmm.mmm.mmm is
the subnet mask of the Switch)
6 Select the quit command and enter the default gateway for the Switch:
ip route-static 0.0.0.0 0.0.0.0 xxx.xxx.xxx.xxx
(where xxx.xxx.xxx.xxx is the IP address of the default gateway)
7 From the User View, enter the save command to save the configuration
to your Switch as the configuration is not saved automatically when the
Switch is powered down.
The initial set up of your Switch is now complete and the Switch is ready
for you to set up your chosen management method. See “Methods of
Managing a Switch” on page 38.
46
CHAPTER 3: SETTING UP FOR MANAGEMENT
If you do not intend to use the command line interface via the console
port to manage the Switch, you can disconnect the serial cable and close
the terminal emulator software.
Connecting to a Front
Panel Port
To set up your Switch manually you can, alternatively, make a connection
to a front panel port. To do this you will need an IP address, refer to
“Viewing Automatically Configured IP Information” on page 49 for more
information.
The procedure described in this section assumes the unit has been
powered up in standalone mode.
Pre-requisites
■
A workstation running a suitable operating system — refer to
“Choosing a Browser” on page 54.
■
A Network Interface Card (NIC).
■
A Category 5 twisted pair Ethernet cable with RJ-45 connectors at
both ends.
■
A suitable Web browser — refer to “Choosing a Browser”on page 54.
■
Existing IP address of the Switch.
■
You need to have the following so that you can manually set up the
Switch with IP information:
■
IP address
■
subnet mask
■
default gateway
■
management VLAN ID, normally set to the default value (1)
Manually Configuring IP Information
47
Connecting the Workstation to the Switch
1 Connect the workstation to a front panel port using an Ethernet cable as
shown in Figure 17.
Figure 17 Connecting a Workstation to the Switch via a Front Panel Port
Switch
Workstation
(with a Network
Interface Card
installed)
Ethernet Cable
Front Panel
Port Connection
To connect the cable:
a Attach an RJ-45 connector at one end of the Ethernet cable to the
Network Interface Card (NIC) in the workstation.
b Connect the RJ-45 connector at the other end of the cable to one of
the front panel ports on the Switch.
Do not interconnect the Switch to any other unconfigured Switch.
Setting Up the Switch with IP Information
You are now ready to manually set up the Switch with IP information. You
can do this using the Web interface or the command line interface (CLI)
via telnet.
Using the Web Interface
1 Power-up the Switch. This takes approximately one minute.
2 Open a suitable Web browser and enter the IP address of your Switch in
the Address field.
If there is no response, wait for one minute then re-enter the IP address.
If a pop up message appears displaying download and install simplified
Chinese information, click Cancel.
3 At the login and password prompts, enter admin as your user name and
press Return and at the password prompt (default user name and
password) press Return again. If you have logged on correctly, the Device
View of the Switch is displayed.
48
CHAPTER 3: SETTING UP FOR MANAGEMENT
4 To enter basic setup information for the Switch, select Administration > IP
Setup and then follow the wizard through various system screens to enter
the IP address and subnet mask that you want the Switch to use when it
is connected to the network. The final page displays a summary of the
information entered.
5 Select Save Configuration to save the configuration to your Switch.
The initial set up of your Switch is now complete and the Switch is ready
for you to set up your chosen management method. See “Methods of
Managing a Switch” on page 38.
Using Command Line Interface via Telnet
1 To start a Telnet session to the unit, click Start in Microsoft Windows
95/98/2000/NT/XP.
a Click Run.
b In the dialogue box that appears type the IP address of the unit, that
is: Telnet xxx.xxx.xxx.xxx
(where xxx.xxx.xxx.xxx is the IP address of the Switch)
c Click OK.
2 Press Enter to open a login prompt.
If the login prompt does not begin immediately, press Return a few times
until it starts.
3 At the login and password prompts, enter admin as your user name and
press Return at the password prompt. If you have logged on correctly,
<4500> is displayed as shown in the example in Figure 18.
Viewing Automatically Configured IP Information
49
Figure 18 User View Login via Telnet
4 Enter the system-view command and Enter.
5 Enter interface vlan 1 and Enter.
6 Enter the IP address and subnet mask for the Switch as follows:
ip address xxx.xxx.xxx.xxx mmm.mmm.mmm.mmm
(where xxx.xxx.xxx.xxx is the IP address and mmm.mmm.mmm.mmm is
the subnet mask of the Switch)
7 Enter the default gateway for the Switch:
ip route-static 0.0.0.0 0.0.0.0 xxx.xxx.xxx.xxx
(where xxx.xxx.xxx.xxx is the IP address of the default gateway)
8 From the User View, enter the save command to save the configuration
to your Switch as the configuration is not saved automatically when the
Switch is powered down.
The initial set up of your Switch is now complete and the Switch is ready
for you to set up your chosen management method. See “Methods of
Managing a Switch” on page 38.
Viewing
Automatically
Configured IP
Information
If you allow the Switch to automatically configure its own IP information
you need to discover and view the IP information before you can begin to
manage the Switch. You can discover the IP information in two ways:
■
Using 3Com Network Director — this application will auto-discover
the Switch and display the automatically allocated IP information
assigned to the Switch.
50
CHAPTER 3: SETTING UP FOR MANAGEMENT
■
Using 3Com Network
Director
Connecting to the Console Port — connect a workstation using a
console cable to the console port of the Switch. You can then view the
IP information automatically assigned to the Switch using the
command line interface (CLI).
You can use the 3Com Network Director application (available from the
3Com website) to discover the automatically allocated IP information.
1 Connect your Switch to the network.
2 Power-up the Switch and wait for two minutes.
3 Launch 3Com Network Director and run the Auto-discovery wizard.
3Com Network Director will auto-discover the new Switch and display
the IP information that has been automatically allocated to the Switch.
Most DHCP and BootP servers allow static IP addresses to be configured
so that you know what IP address the Switch will be given. Refer to the
documentation that accompanies your DHCP or BootP server.
If your network does not have a DHCP or BootP server, the workstation
running 3Com Network Director must be on the same subnet as the
Switch, because Auto-IP addresses are non-routable.
Connecting to the
Console Port
Alternatively, you can view the automatically configured IP information
via the command line interface (CLI) through a connection to the console
port. (This example describes a local connection to the console port,
rather than a remote one via a modem.) For further information on
connecting via the console port see “Connecting the Workstation to the
Switch”on page 44.
Viewing IP Information via the Console Port
You are now ready to view the automatically allocated IP information
using the command line interface.
1 Connect your Switch to the network using the Ethernet cable. As soon as
a network connection is made the Switch begins the automatic IP
configuration process.
The automatic IP configuration process usually completes within one
minute.
2 The command line interface login sequence begins as soon as the Switch
detects a connection to its console port.
Viewing Automatically Configured IP Information
51
If the login prompt does not begin immediately, press Return a few times
until it starts.
3 At the login and password prompts, enter admin as your user name and
press Return at the password prompt. If you have logged on correctly,
<4500> is displayed as shown in the example in Figure 19.
Figure 19 User View Login
4 Enter display ip interface br to view a summary of allocated IP
addresses.
The initial set up of your Switch is now complete and the Switch is ready
for you to set up your chosen management method. See “Methods of
Managing a Switch” on page 38.
If you do not intend to use the command line interface via the console
port to manage the Switch, you can logout, disconnect the serial cable
and close the terminal emulator software.
52
CHAPTER 3: SETTING UP FOR MANAGEMENT
Setting Up
Command Line
Interface
Management
User Interface
Overview
This section describes how you can set up command line interface
management using a local console port connection or over the network.
User interface configuration is provided by the Switch to configure and
manage the port data. There are two types of user interfaces:
AUX User Interface — used to log in to your Switch via the console port.
A fabric can have up to eight AUX user interfaces.
VTY User Interface — used to Telnet to the Switch. The Switch can have
up to five VTY user interfaces.
CLI Management via
the Console Port
To manage a Switch using the command line interface via the local
console port connection:
1 Ensure you have connected your workstation to the console port correctly
as described in “Connecting to the Console Port” on page 43.
2 Your Switch is now ready to continue being managed and/or configured
through the CLI via its console port.
CLI Management over
the Network
To manage a Switch using the command line interface over a network
using Telnet:
1 Ensure you have already set up the Switch with IP information as
described in “Methods of Managing a Switch” on page 38.
2 Check that you have the IP protocol correctly installed on your
management workstation. You can check this by trying to browse the
World Wide Web. If you can browse, the IP protocol is installed.
3 Check you can communicate with the Switch by entering a ping
command at the DOS prompt in the following format:
c:\ ping xxx.xxx.xxx.xxx
(where xxx.xxx.xxx.xxx is the IP address of the Switch)
If you get an error message, check that your IP information has been
entered correctly and the Switch is powered up.
4 To open a Telnet session via the DOS prompt, enter the IP address of the
Switch that you wish to manage in the following format:
>telnet xxx.xxx.xxx.xxx
Setting Up Command Line Interface Management using SSH
53
(where xxx.xxx.xxx.xxx is the IP address of the Switch)
If opening a Telnet session via third party software you will need to enter
the IP address in the format suitable for that software.
5 At the login and password prompts, enter admin as your user name and
press Return at the password prompt (or the password of your choice if
you have already modified the default passwords).
If the login prompt does not display immediately, press Return a few
times until it starts.
6 If you have logged on correctly, the Switch you wish to manage is
displayed as <4500> (as shown in l on page 45).
Setting Up
Command Line
Interface
Management using
SSH
This section describes how you can set up Command Line Interface
management using SSH over a network.
To manage a Switch using the command line interface over a network
using SSH:
1 Ensure you have already set up the Switch with IP information as
described in “Methods of Managing a Switch” on page 38.
2 Check that you have the IP protocol correctly installed on your
management workstation. You can check this by trying to browse the
World Wide Web. If you can browse, the IP protocol is installed.
3 Check you can communicate with the Switch by entering a ping
command at the DOS prompt in the following format:
c:\ ping xxx.xxx.xxx.xxx
(where xxx.xxx.xxx.xxx is the IP address of the Switch)
If you get an error message, check that your IP information has been
entered correctly and the Switch is powered up.
The switch automatically generates a host key pair when it is powered up
for the first time, or after any reset to factory defaults. Host key
generation may take a while, during which time SSH connections to the
switch will be refused.
4 Install an SSH client application on the workstation you want to use to
access the switch.
3Com recommends the following SSH clients; PuTTY, OpenSSH and SSH
Communications Security Corp Secure Shell.
54
CHAPTER 3: SETTING UP FOR MANAGEMENT
5 Open an SSH session and access the Switch using the Switch’s IP address
and port number.
The first time you connect to the switch the client will ask you to confirm
that the host key is correct for the device.
6 The Switch and the SSH client will authenticate each other and a secure
connection will be established.
7 Enter your usual username and password to access the CLI commands.
For increased security please change the default password when using
SSH for the first time.
For further information on generating a host key on your switch and
transferring keys to the Switch using TFTP server please refer to the
Configuration Guide that is supplied with your Switch.
Setting Up Web
Interface
Management
Pre-requisites
This section describes how you can set up web interface management
over the network.
■
Ensure you have already set up the Switch with IP information as
described in “Methods of Managing a Switch” on page 38.
■
Ensure that the Switch is connected to the network using a Category
5 twisted pair Ethernet cable with RJ-45 connectors.
■
A suitable Web browser.
Choosing a Browser
To display the web interface correctly, use one of the following Web
browser and platform combinations:
Table 12 Supported Web Browsers and Platforms
Netscape 7.1
Internet Explorer 5.5
Internet Explorer 6.0
Mozilla 1.4
Windows
2000
Windows XP
Windows
Server 2003
✓
✓
✓
✕
✓
✓
✓
✕
✕
✓
✓
✕
Red Hat
Linux 9
Solaris
7/9
✕
✕
✓
✓
✕
✕
✓
✕
Setting Up SNMP Management V1 or V2
55
For the browser to operate the web interface correctly, JavaScript™ and
Cascading Style Sheets must be enabled on your browser. These features
are enabled on a browser by default. You will only need to enable them if
you have changed your browser settings.
Web Management
Over the Network
To manage a Switch using the web interface over an IP network:
1 Check that you have the IP protocol correctly installed on your
management workstation. You can check this by trying to browse the
World Wide Web. If you can browse, the IP protocol is installed.
2 Check you can communicate with the Switch by entering a ping
command at the DOS prompt in the following format:
c:\ ping xxx.xxx.xxx.xxx
(where xxx.xxx.xxx.xxx is the IP address of the Switch)
If you get an error message, check that your IP information has been
entered correctly and the Switch is powered up.
3 Open your web browser and enter the IP address of the Switch that you
wish to manage in the URL locator, for example, in the following format:
http://xxx.xxx.xxx.xxx
4 At the login and password prompts, enter admin as your user name and
press Return at the password prompt (or the password of your choice if
you have already modified the default passwords).
5 Click on the Device View button to display the web management options.
Setting Up SNMP
Management V1 or
V2
Any network management application running the Simple Network
Management Protocol (SNMP) can manage a Switch if:
■
The correct Management Information Bases (MIBs) are installed on the
management workstation.
■
The management workstation is connected to the Switch using a port
in VLAN 1 (the Default VLAN). By default, all ports on the Switch are in
VLAN 1.
You can use the 3Com Network Director application that is available from
the 3Com website to provide SNMP management for your Switch. If you
use 3Com Network Director it automatically loads the correct MIBs and
necessary files onto your workstation.
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CHAPTER 3: SETTING UP FOR MANAGEMENT
Pre-requisites
■
Documentation supplied with the SNMP network management
application software.
The default read community string is public. To change this setting in
System View, enter display snmp community.
The default write community string is private. To change this setting in
System View, enter display snmp community.
To manage your Switch using an SNMP network management
application, you need to specify SNMP community strings for the users
defined on the Switch. You can do this using the command line interface
system management snmp community command — refer to the
command line interface section of the “SuperStack 4 Switch Command
Reference Guide” for more information.
SNMP V3 is on as default. All commands are in snmp menu in System
View.
Default Users and
Passwords
If you intend to manage the Switch using the web interface or the
command line interface, or to change the default passwords, you need to
log in with a valid user name and password. The Switch has three default
user names, and each user name has a different password and level of
access. These default users are listed in Table 13.
CAUTION: To protect your Switch from unauthorized access, you must
change all three default passwords as soon as possible, even if you do not
intend to actively manage your Switch.
Table 13 Default Users
User
Name
Default
Password Access Level
monitor
monitor
monitor — the user can view all manageable parameters,
except special/security features, but cannot change any
manageable parameters
manager
manager
manager — the user can access and change the
operational parameters but not special/security features
admin
(no
password)
security — the user can access and change all manageable
parameters
Default Users and Passwords
57
Use the admin default user name (no password) to login and carry out
initial Switch setup.
To set a password for the admin user in the CLI, enter the following from
system view:
[4500]local-user admin <cr>
[4500-luser-admin]password simple xxxxxxxx
(where xxxxxxxx is your chosen password).
Save the configuration in the User View.
For information on the lost password procedure please refer to the
Configuration Guide that is supplied with your Switch.
58
CHAPTER 3: SETTING UP FOR MANAGEMENT
4
CREATING A STACK
This chapter contains the information you need to create a stack. It covers
the following topics:
How To
Interconnect Units
■
How To Interconnect Units
■
Guidelines For Interconnecting Units
■
Unit Numbering within the Stack
Up to eight 3Com Switch 4500 units can be interconnected to create a
stack and then treated as a single manageable unit with one IP address.
You can interconnect your Switches to create a stack using a standard
1000 Mbps Ethernet connection.
You can only create a stack by interconnecting a 3Com Switch 4500 with
other 3Com Switch 4500s.
This section assumes you have either set up your units for management
as detailed in Chapter 3 “Setting Up for Management”or that you are
using a console cable connected to the console port to set up and
allocate IP addresses and so on.
3Com recommends that you do not physically connect the cables on your
stack ports until you have carried out the initial configuration of the stack
ports as detailed below.
1 Ensure that the Switch units that you wish to interconnect have the latest
software agent installed. You can use the display version
command to check this.
2 Enable the ‘up port’ and the ‘down port’ on each Switch to operate in
stack mode using the following CLI command. From the System View
enter stack-port gigabitethernet 1/0/51 enable, for
example.
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CHAPTER 4: CREATING A STACK
As with all Switch 4500 CLI commands, the format for entering a portspecific command is x/y/z, where x = unit number, y = module number (in
the case of the Switch 4500 this will always be 0), z = port number.
3 Connect the stack-enabled ‘up’ port on one Switch 4500 unit to the
stack-enabled ‘down’ port on another Switch 4500 unit using the
appropriate connection method for your Switch.
4 Save all configuration settings. From the User View, enter the save
command to save the configuration to your Switch.
Guidelines For
Interconnecting
Units
This section offers some guidelines for creating a stack. Using these
guidelines will help prevent problems arising when setting up your stack.
The 3Com Switch 4500 supports stacking by daisy-chaining from unit to
unit over standard Gigabit Ethernet connections. Resilient stacking, with
a return loop from bottom to top of a stack, is not supported and will
disable stack operation.
■
The maximum number of Switch units that can be interconnected is
eight.
■
You can only create a stack by interconnecting a 3Com Switch 4500
with other 3Com Switch 4500s.
■
Stacking is only supported using Gigabit ports.
■
The stacking connections must be from one combo port pair on a unit
to the opposite combo port pair on the next unit. Refer to Figure 20 to
see how this looks in a stack of units.
■
The stacking ports must be configured for “fabric mode” before they
can be used for stacking. By default, fabric mode is enabled for ports
25/26 and 49/50. The configuration can be changed to move fabric
mode to the other port pair; this requires a reboot of the system.
■
3Com strongly recommends that you upgrade all Switches to be
interconnected to the latest software agent.
■
3Com recommends that you remove the configuration file from a
Switch unit that has previously been used elsewhere in your network
before you interconnect to an existing unit. If you do not do this,
problems may be caused by conflicting Switch configurations. Use the
dir command from the User View to display the configuration files
stored on the Switch and locate the [filename].cfg file. Do NOT
under any circumstances remove the 3comoscfg.def file (this is the
default configuration file).
Unit Numbering within the Stack
■
61
When a port is operating in stack mode it will no longer be
configurable in the normal way, that is, you cannot control port
features such as auto-negotiation, VLANs, static addresses, STP,
Aggregated Links, Resilient Links, and so on. However, it is possible to
specify the stack VLAN.
Figure 20
Speed:Green = 100Mbps, Yellow = 10Mbps
Stack example (using 4 units)
3CR17562-91 SuperStack 3 Switch 4500 50-Port
Duplex:Green = Full Duplex, Yellow = Half Duplex
49
50
49
50
PWR
RPS
Speed: (100Base-TX) Green = 100Mbps Yellow = 10Mbps (1000Base-X) Green = 1000Mbps Yellow = 10/100Mbps
3CR17561-91 SuperStack 3 Switch 4500 26-Port
Duplex: Green = Full Duplex, Yellow = Half Duplex
25
10/100BASE-TX
Speed: (100Base-TX) Green = 100Mbps Yellow = 10Mbps (1000Base-X) Green = 1000Mbps Yellow = 10/100Mbps
3CR17561-91 SuperStack 3 Switch 4500 26-Port
26
25
26
10/100/1000BASE-T
1000BASE-X
3CR17561-91 SuperStack 3 Switch 4500 26-Port
Duplex: Green = Full Duplex, Yellow = Half Duplex
2
25
Unit Numbering
within the Stack
26
10/100/1000BASE-T
1000BASE-X
10/100BASE-TX
10/100BASE-TX
25
Duplex: Green = Full Duplex, Yellow = Half Duplex
2
25
Speed: (100Base-TX) Green = 100Mbps Yellow = 10Mbps (1000Base-X) Green = 1000Mbps Yellow = 10/100Mbps
26
1000BASE-X
26
25
26
10/100/1000BASE-T
When a stack is created using the Switch 4500 the unit numbering can
be determined in two ways.
■
You can manually assign unit IDs 1 to 8 to specific units using the
change[self-unit, unit-id] to [1-8,
auto-numbering] command from the System View. If you
manually assign unit IDs to a Switch via the change command the IDs
will be retained after a power cycle.
If you add a unit to a stack that has previously been manually
configured with a unit ID and this conflicts with an ID already within
the stack, then the Switch with the lowest MAC address assumes the
ID in question and the other unit will automatically renumber.
3Com recommends that you manually assign the unit IDs within the stack
if you wish to have predictability of knowing which units have which IDs
at all times.
■
Stack topology is ‘discovered’ and the units auto-number their IDs.
Adding and removing units from the stack does not cause any
renumbering to occur and the stack will continue to work normally.
62
CHAPTER 4: CREATING A STACK
Renumbering only occurs when the stack is next power cycled if the units
are configured to auto-number.
The unit LEDs will display the unit number in the stack, from 1 to 8.
If you are having problems, refer to “Solving Stack Formation Problems”
on page 69.
5
PROBLEM SOLVING
This chapter helps you to diagnose and solve problems you may have
with the operation of your Switch. There is also an explanation of IP
addressing and upgrading software.
The topics covered are:
■
Solving Problems Indicated by LEDs
■
Solving Hardware Problems
■
Solving Communication Problems
■
Solving Stack Formation Problems
If you experience a problem that is not listed here, it may be included in
the Support section of the Switch 4500 Command Reference Guide
available on 3Com’s Web site at www.3com.com.
For Technical Support information, see Appendix C.
64
CHAPTER 5: PROBLEM SOLVING
Solving Problems
Indicated by LEDs
If the LEDs on the Switch indicate a problem, refer to the list of suggested
solutions below.
The PWR LED does not light
Check that the power cable is firmly connected to the Switch and to the
supply outlet. If the connection is secure and there is still no power, you
may have a faulty power cord or an internal fault. Firstly, check the power
cord by:
■
testing it in another device.
■
connecting a working power cord to the ‘problem’ device then
contact your supplier for advice.
On powering-up, the PWR LED lights Red
The Switch unit has failed its Power On Self Test (POST) because of an
internal problem. The fault type will be indicated on the unit LEDs.
Contact your supplier for advice.
On powering-up, the PWR LED is flashing yellow
A port has failed and has been automatically disabled. You can verify this
by checking that the Port LED is quickly flashing Yellow. If a port fails, the
Switch passes its Power On Self Test and continues to operate normally.
A Port LED is flashing yellow
The port has failed and has been automatically disabled. The Switch
passes its Power On Self Test and continues to operate normally, even if
one or more ports are disabled.
A link is connected and yet the Port LED does not light
Check that:
■
The Switch and the device at the other end of the link (or cable) are
connected securely.
■
The devices at both ends of the link are powered-up
■
The quality of cable is satisfactory
■
Auto-negotiation settings are the same at both ends.
Solving Hardware Problems
65
Auto-negotiation problems will occur with 10BASE-T or 100BASE-T
where auto-negotiation is disabled and incorrect cables are being used
(cross-over or straight)
Auto-negotiation problems will occur with fiber if:
■
■
■
Solving Hardware
Problems
The Receiver (RX) and Transceiver (TX) cable connectors are
swapped
Fibers are broken
Auto-negotiation differs at either end (a link appears at the ‘fixed’
end and not at the auto-negotiation end)
In the rare event of your Switch unit experiencing a hardware failure,
refer to the list of suggested solutions below.
A fan failure warning message is received
Your Switch has a fan monitoring system that will generate fan failure
warning messages. Fan failure could potentially reduce the lifetime of the
Switch. The monitoring system polls the fan status at periodic intervals
while the unit is powered up.
If one fan has failed in the Switch, a warning message will be generated
in the following ways:
■
Unit LED — the seven segment display will show a green flashing ‘f’.
■
RMON Trap — if configured, an RMON trap is generated and sent to
the management workstation.
■
Command Line Interface — an indication of a general hardware
failure is provided through the Top level menu displayed when logging
on to the CLI. For more detailed information about the failure select
the display logbuffer command.
■
Web interface — an indication of fan failure is provided through the
Device Summary table for the specific unit. In addition all Summary
tables turn red to indicate the fan failure.
If a fan failure warning message is generated:
1 Power off the unit.
2 Check that the air vents are not obstructed.
66
CHAPTER 5: PROBLEM SOLVING
3 Power cycle the unit. To do this, remove and reconnect the AC mains
supply. If the unit has no AC main supply, remove and reconnect the DC
RPS supply.
4 If another fan failure warning message is generated via the Command
Line Interface or the Web interface, return the unit to 3Com.
Unit fails, no SNMP fan failure message is received
1 Power cycle the unit. To do this, remove and reconnect the AC mains
supply. If the unit has no AC mains supply, remove and reconnect the DC
RPS supply.
2 Check the command line interface (display logbuffer command)
to determine whether a thermal shutdown has occurred.
3 If no, return the unit:
If yes, check that:
■
The air vents are not obstructed.
■
The ambient temperatures and environmental conditions meet those
specified in Appendix B.
4 Power cycle the unit. If a further thermal shutdown occurs, and all
environmental conditions are satisfactory, return the unit to 3Com.
Error message indicating that the SFP transceiver is invalid
The Switch has identified that the SFP does not meet the minimum
requirements for the Switch and has disabled the port. To correct this
problem, completely remove the SFP and replace it with a 3Com
approved SFP. See “Approved SFP Transceivers” on page 34.
Error message indicating that the SFP transceiver is faulty
To correct this problem, completely remove the SFP and then reinsert it.
Alternatively, insert another identical SFP. If the problem persists, contact
3Com Technical Support.
Solving Communication Problems
Solving
Communication
Problems
67
If you experience communication problems with the Switch, ensure that:
■
The Switch IP address and Management VLAN ID has been
configured.
■
If the Switch is separated from your management application by a
router, ensure that the default gateway IP address within the Switch is
the same as the IP address of the router.
■
The Switch’s IP address has been entered correctly in your network
management application (such as 3Com Network Director).
The following is a brief overview of IP addressing, and how to obtain a
registered IP address.
IP Addressing
To be managed correctly, each device on your network (for example a
Switch or Hub) must have a unique IP address. IP addresses have the
format n.n.n.n where n is a decimal number between 0 and 255. An
example IP address is 192.168.100.8.
The IP address is split into two parts:
■
The first part (‘192.168.100’ in the example) identifies the network on
which the device resides
■
The second part (‘.8’ in the example) identifies the device within the
network
The natural subnet mask for this example is 255.255.255.0.
If your network has a connection to the external IP network, that is, you
access the Internet, you must apply for a registered IP address.
How do you obtain a registered IP Address?
The IP registration system ensures that every IP address used is unique; if
you do not have a registered IP address, you may be using an identical
address to someone else and your network will not operate correctly.
InterNIC Registration Services is the organization responsible for
supplying registered IP addresses. The following contact information is
correct at time of publication:
World Wide Web site: http://www.internic.net
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CHAPTER 5: PROBLEM SOLVING
If your IP network is internal to your organization only, that is, you do not
access the Internet, you may use any arbitrary IP address as long as it is
not being used by another device on your network. 3Com suggests you
use addresses in the range 192.168.0.0 to 192.168.255.255 with a
subnet mask of 255.255.255.0.
These suggested IP addresses are part of a group of IP addresses that
have been set aside specially for use ‘in house’ only.
A device is connected to a Switch 4500 PWR but power is not
being supplied
If power is not being supplied to a device connected to a Switch 4500
PWR, you should do the following checks:
■
Check that the device is compliant with the 802.3af standard ref. [18].
The 4500 PWR will only supply power through the front panel port to
802.3af compliant devices.
■
Check that power budget for the Switch has not been exceeded.
If the power budget has been exceeded, then by default, the powered
device connected to the Power over Ethernet port with the lowest
priority port will lose power. However, if all the devices connected to
the Switch have equal priority levels, then the port with the highest
number will lose power.
By default, the Switch will allow a device to receive power as long as
Power over Ethernet power supply has 18 watts spare in its power
budget. If this much power is not available, the device will not be
powered (unless it has a higher priority than existing powered ports)
and a PoE fault will be reported for that port. If enough power
subsequently becomes available, the port will be powered.
■
Check that the port has not had a power limit imposed on it.
Solving Stack Formation Problems
Solving Stack
Formation
Problems
69
If you are having problems with correctly forming a stack, first ensure that
Spanning Tree is enabled. If it is enabled, do the following:
1 Power off all units in the stack.
2 Check all the cable connections in the stack.
3 Check the ports have been enabled as stack ports.
4 Power on all units in the stack.
70
CHAPTER 5: PROBLEM SOLVING
6
UPGRADING SOFTWARE
This chapter describes how to upgrade software to your Switch 4500. It
covers the following topics:
■
The Contents of the Executable File
■
Upgrading from the Command Line Interface
■
Upgrading from the Bootrom Interface
■
Bootrom Upgrade
72
CHAPTER 6: UPGRADING SOFTWARE
The Contents of the
Executable File
The self extracting executable file (xxxxxxxx.exe — where xxxxxxxx is the
file name of your Switch) contains the following:
■
End User License
■
Release Notes
■
Application Software
■
Web Software
■
Bootrom Software
■
Bundled File used with 3ND upgrade wizard — e.g.
s3n03_01_04s56NetMan.zip
Bundled files with the extension NetMan.zip, can be used to upgrade
your Switch using the 3Com Network Director Agent Update. Any
attempt to upgrade individual .web, .btm or .app files using 3Com
Network Director will fail. These files should be used to upgrade your
Switch as described below.
Any attempt to upgrade the Switch directly with xxxxxxxx.exe and
xxxxxxxxNetMan.zip will fail. The individual .web, .btm or .app
files should be used to upgrade your Switch as described below.
The Switch 4500 ships with software supporting 56-bit encryption.
Check on www.3Com.com for more recent software or to access the
available 168-bit encryption version (where allowed by applicable laws).
Upgrading from the
Command Line
Interface
This section describes how to upgrade files to your Switch from the
Command Line Interface (CLI).
Introduction
Before upgrading the software to your Switch from the CLI, it is
important to check the contents of the flash to ensure that there is
enough space to download the new files.
The flash space needed for the new files is approximately 5.5 MB.
1 To check the contents of the flash, logon to your Switch either via a telnet
connection or directly via the console to display the User View in the CLI
and enter the following:
dir unit1>flash:
Upgrading from the Command Line Interface
73
A file list similar to the following is displayed:
Directory of unit1>flash:/
0
-rw-
714784
Apr 02 2005 01:36:16
s3p03_01_00.zip
1
-rw-
11043
Apr 02 2005 01:37:17
3ComOScfg.def
2
-rw-
11427
Apr 02 2005 00:01:01
3ComOScfg.cfg
3
-rw-
4529259 Apr 02 2005 01:39:57
s3n03_01_00s168.app
15367 KB total (10215 KB free)
2 You can check the contents of the flash for the remaining units in the
fabric by entering:
dir
dir
dir
dir
dir
dir
unit2>flash:
unit3>flash:
unit4>flash:
unit5>flash:
unit6>flash:
unit7>flash:
The file list should contain one of each file type (.zip, .def, .cfg
and .app).
3 Any additional files should be considered for deletion to allow maximum
space for downloading the new files. To delete a file from the list enter:
delete/unreserved unit1>flash:/filename
To delete files from the list for the remaining units in a fabric, replace
unit1 with unit2 (on the next line) and so on for each Switch in the
fabric.
4 The /unreserved option will cause the file to be deleted from both the
flash and the recycle-bin. To check that deleted files have been removed
from the recycle-bin enter the following:
reset recycle-bin unit1>flash:/
If the recycle-bin is empty the following is displayed:
% File can’t be found “unitN>flash:/”
74
CHAPTER 6: UPGRADING SOFTWARE
To check that deleted files have been removed from the recycle-bin for
the remaining units in a fabric, replace unit1 with unit2 and so on for
each Switch in the fabric.
Backup
The following steps enable you to backup each Switch in the fabric:
1 To back up the default configuration file on each Switch in the fabric,
enter:
copy unit1>flash:/3ComOScfg.def
unit1>flash:/030100cfg.def
Replace unit1 with unit2 and so on for each Switch in the fabric.
2 To back up the active configuration file on each Switch in the fabric,
enter:
copy unit1>flash:/3ComOScfg.cfg
unit1>flash:/030100cfg.cfg
Replace unit1 with unit2 and so on for each Switch in the fabric.
3 To back up the Web user interface file on each Switch in the fabric, enter:
copy unit1>flash:/s3p03_01_00.web
unit1>flash:/030100http.zip
Replace unit1 with unit2 and so on for each Switch in the fabric.
TFTP
To upgrade software to your Switch via TFTP do the following:
1 To download the application file, enter:
tftp aaa.aaa.aaa.aaa get s3n03_01_00s168.app
(where aaa.aaa.aaa.aaa is the IP address of the TFTP server)
s4n indicates the Switch filename, see Table 14 for further details:
Table 14 Switch 4500 Filenames
Filename Prefix
Switch
s3n
SuperStack 3 Switch 4500 software
s3o
SuperStack 3 Switch 4500 bootrom software
2 To download the Web user interface file, enter:
tftp aaa.aaa.aaa.aaa get s3p03_01_00.web
Upgrading from the Command Line Interface
75
3 To download the default configuration file, enter:
tftp aaa.aaa.aaa.aaa get 3ComOScfg.def
4 To download the bootrom file, enter:
tftp aaa.aaa.aaa.aaa get s3o002_012_000.btm
The bootrom firmware may not require upgrading for every software
upgrade, therefore there may not be a new bootrom (.btm) file to
download.
File Distribution
The following commands enable you to distribute your downloaded files
to the remaining Switches in the fabric:
1 To copy the new software file to each Switch in the fabric, enter:
copy unit1>flash:/s3n03_01_00s168.app unit2>flash:/
Replace unit2 with unit3 and so on for each Switch in the fabric.
2 To copy the new default configuration file to each Switch in the fabric,
enter:
copy unit1>flash:/3ComOScfg.def unit2>flash:/
Replace unit2 with unit3 and so on for each Switch in the fabric.
3 To copy the new Web user interface file to each Switch in the fabric,
enter:
copy unit1>flash:/s3p03_01_00.web unit2>flash:/
Replace unit2 with unit3 and so on for each Switch in the fabric.
4 To copy the new Bootrom firmware file to each Switch in the fabric,
enter:
copy unit1>flash:/s3o002_012_000.btm unit2>flash:/
Replace unit2 with unit3 and so on for each Switch in the fabric.
Command Line Interface Switch Setup
1 To set the Switch to boot from the new software you have downloaded,
enter the following:
boot boot-loader unit1>flash:/s3n03_01_00s168.app
76
CHAPTER 6: UPGRADING SOFTWARE
To set the remaining Switches in the fabric to boot from the new
software, replace unit1 with unit2 and so on for each Switch in the
fabric.
2 To set the Switch to load the new bootrom firmware, enter:
boot bootrom unit1>flash:/s3o002_012_000.btm
To set the remaining Switches in the fabric to load the new bootrom
firmware, replace unit1 with unit2 and so on for each Switch in the
fabric.
3 You will now need to reboot the fabric for the changes to take effect. The
Switch will upgrade the bootrom firmware and boot from the specified
software .app file.
The files that you have saved in the backup phase should be deleted once
the upgrade has completed successfully.
FTP
(via a network port)
To upgrade software to your Switch via FTP do the following:
1 Enter the following command from User View:
ftp aaa.aaa.aaa.aaa
(where aaa.aaa.aaa.aaa is the IP address of the FTP server)
If the FTP server has been successfully located, the following information
is displayed:
Trying...
Press CTRL+K to abort
Connected
Information on your FTP server is displayed, logon with your username
and password.
2 To download the configuration file, enter:
get 3ComOScfg.def
The following information is displayed if the download has been
successful:
Upgrading from the Command Line Interface
77
200 PORT command successful.
150 Opening ASCII mode data connection for
vrpcfg.def(10986 bytes).......226 Transfer complete.
FTP: 10986 byte(s) received in 8.046 second(s) 1000.00
byte(s)/sec.
3 Enter quit to exit.
XModem (via the
console cable)
To upgrade software to your Switch via XModem do the following:
1 From the User View, enter:
xmodem get unit1>flash:/3ComOScfg.def
The following information is displayed:
**** WARNING ****
xmodem is a slow transfer protocol limited to the
current speed
settings of the auxiliary ports.
During the course of the download no exec input/output
will be available!
Proceed?[Y/N]y
Destination filename [unit1>flash:/vrpcfg.def]?
Before pressing ENTER you must choose ‘YES’ or
‘NO’[Y/N]:
2 Enter y to display the following message:
Download with XMODEM protocol...
...C..
3 As the file is downloading, start the XModem send file process with
terminal emulation software, such as Microsoft Hyperterminal.
When the file download is complete the message Download
successful! is displayed.
4 Repeat steps 1 to 3 for each of the remaining files.
78
CHAPTER 6: UPGRADING SOFTWARE
Upgrading from the
Bootrom Interface
This section describes how to upgrade your Switch from the Bootrom
Interface.
Introduction
When the Switch is running the initial boot phase via the console, the
following prompt is displayed with a five second countdown timer:
Press CTRL-B to enter Boot Menu... 4
followed by a password prompt:
password:
1 Select Enter (the default is no password) to display the following boot
menu:
BOOT
1.
2.
3.
4.
5.
6.
7.
8.
9.
0.
MENU
Download application file to flash
Select application file to boot
Display all files in flash
Delete file from flash
Modify bootrom password
Enter bootrom upgrade menu
Skip current configuration file
Set bootrom password recovery
Set switch startup mode
Reboot
Enter your choice(0-9):
2 Enter the appropriate menu number to select a specific option.
Before upgrading the software to your Switch from the Bootrom
Interface it is important to check the contents of the flash to ensure that
there is enough space to download the new files.
Upgrading from the Bootrom Interface
79
3 Select option 3 from the Boot Menu. A file list similar to the following is
displayed:
Boot menu choice: 3
File Number
File Size(bytes) File Name
====================================================
1
4
snmpboots
2
151
private-data.txt
3(*)
4649088
s3n03_01_00s168.app
4
576218
s3p03_01_03_0024.zip
5
10301
3comoscfg.def
6
10369
3comoscfg.cfg
7
10369
[test.cfg]
Free Space: 10469376 bytes
The current application file is s3n03_01_00s168.app
(*)-with main attribute; (b)-with backup attribute
(*b)-with main and backup attribute
This option displays all the files in flash and also indicates the file that the
Switch is currently set to boot from (marked with an asterix). A ‘b’ by the
file number indicates the file is a backup boot file.
The files which are required by the Switch are:
s3p03_01_0024.zip
3comoscfg.def
3comoscfg.cfg
s3n03_01_00s168.app
The s3n03_01_00s168.app file is the boot software. The name of this
file will vary depending on the Switch type and the release version.
If the filename is in brackets, for example [test.cfg], this indicates
that the file has been deleted from the CLI but is still present in the
recycle-bin.
Any additional files should be considered for deletion to allow maximum
space for downloading the new files.
4 To delete a file from the list select option 4 from the Boot Menu and
select the file number you wish to delete.
80
CHAPTER 6: UPGRADING SOFTWARE
TFTP
To upgrade software to your Switch via TFTP, do the following:
1 From the Boot Menu, select option 1 (Download application file to flash)
to display the following:
1.
2.
3.
0.
Set TFTP protocol parameter
Set FTP protocol parameter
Set XMODEM protocol parameter
Return to boot menu
Enter your choice(0-3):
2 Select option 1 to display the following:
Load File name:
Switch IP address:
Server IP address:
3 Enter the file name, Switch IP address and Server IP address to display the
following:
Are you sure to download file to flash? Yes or No(Y/N)
4 Enter y and the following information is displayed to indicate the file is
downloading:
Attached TCP/IP Interface to netdrv0
Attaching network interface lo0...done
Loading.....done
Free flash Space: 10456064 bytes
Writing flash....done!
Please input the file attribute (main/backup/none):none
done!
5 Repeat steps 1 to 4 for each of the remaining files.
FTP
To upgrade software to your Switch via FTP, do the following:
1 From the Boot Menu, select option 1 (Download application file to flash)
to display the following:
1.
2.
3.
0.
Set TFTP protocol parameter
Set FTP protocol parameter
Set XMODEM protocol parameter
Return to boot menu
Enter your choice(0-3):
2 Select option 2 to display the following:
Load File name:
Switch IP address:
Upgrading from the Bootrom Interface
81
Server IP address:
FTP User Name:
FTP User Password:
3 Enter the file name, Switch IP address, Server IP address and FTP user
name and password to display the following:
Are you sure to download file to flash? Yes or No(Y/N)
4 Enter y and the following information is displayed to indicate the file is
downloading:
Loading.....done
Free flash Space: 10456064 bytes
Writing flash....done!
Please input the file attribute (main/backup/none):none
done!
5 Repeat steps 1 to 4 for each of the remaining files.
XModem
To upgrade software to your Switch via XModem, do the following:
1 From the Boot Menu, select option 1 (Download application file to flash)
to display the following:
1.
2.
3.
0.
Set TFTP protocol parameter
Set FTP protocol parameter
Set XMODEM protocol parameter
Return to boot menu
Enter your choice(0-3):
2 Select option 3 to display the following:
Please select your download baudrate:
1. 9600
2.*19200
3. 38400
4. 57600
5. 115200
0. Return
Enter your choice(0-5):
3 Select option 2 to set the baudrate to 19200.
You will also need to change the baudrate on Hyperterminal to 19200
bps and select XModem protocol.
4 Press Enter to start the download. The following information is displayed:
82
CHAPTER 6: UPGRADING SOFTWARE
Now please start transfer file with XMODEM protocol
If you want to exit, Press <Ctrl+X>
Loading...CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
5 As the file is downloading, start the XModem send file process with
terminal emulation software, such as Microsoft Hyperterminal.
When the download is complete, the following information is displayed:
Please input the file attribute (main/backup/none):none
done!
6 Repeat steps 1 to 5 for each of the remaining files.
Bootrom Upgrade
This section describes how to indicate which file the Switch is to boot
from once the software has been loaded.
1 From the Boot menu, select option 2 to display the following:
Select applicaton file to boot:
1. set application file to boot
2. set configuration files
3. set web files
0. return
Enter your choice (0-3):
2 Select option 2 to display a file list similar to the following:
Boot menu choice: 2
File Number
File Size(bytes) File Name
====================================================
1(*)
4649088
s3n03_01_00s168.app
Free Space: 10491904 bytes
The current application file is s3n03_01_00s168.app
(*)-with main attribute;(b)-with backup attribute
(*b)-with both main and backup attribute
Please input the file number to change:
An asterisk (*) indicates the current main boot file.
A similar screen will be displayed for the configuration files and the web
files.
In each case, the file is given the attribute “main” or “backup”
Bootrom Upgrade
Bootrom Upgrade
via TFTP
83
To upgrade the bootrom firmware from the Boot menu via TFTP do the
following:
1 From the Boot menu, select option 6 to display the bootrom upgrade
menu as shown:
Bootrom update menu:
1. Set TFTP protocol parameter
2. Set FTP protocol parameter
3. Set XMODEM protocol parameter
0. Return to boot menu
Enter your choice(0-3):
2 Select option 1 to display the following:
Load File name:
Switch IP address:
Server IP address:
3 Enter the file name, Switch IP address and Server IP address to display the
following:
Are you sure to update your bootrom? Yes or No(Y/N)
4 Enter y and the following information is displayed to indicate the file is
downloading:
Attached TCP/IP interface to netdrv0
Attaching network interface Io0...done
Loading.................................
...............done
Bootrom updating............done!
Bootrom Upgrade
via FTP
To upgrade the bootrom firmware from the Boot menu via FTP do the
following:
1 From the Boot menu, select option 6 to display the bootrom upgrade
menu as shown:
Bootrom update menu:
1. Set TFTP protocol parameter
2. Set FTP protocol parameter
3. Set XMODEM protocol parameter
0. Return to boot menu
Enter your choice(0-3):
2 Select option 2 to display the following:
84
CHAPTER 6: UPGRADING SOFTWARE
Load File name:
Switch IP address:
Server IP address:
FTP User Name:
FTP User Password:
3 Enter the file name, Switch IP address, Server IP address, FTP user name
and password to display the following:
Are you sure to update your bootrom? Yes or No(Y/N)
4 Enter y and the following information is displayed to indicate the file is
downloading:
Attached TCP/IP interface to netdrv0
Attaching network interface Io0...done
Loading.................................
...............done
Bootrom updating............done!
Bootrom Upgrade
via XModem
To upgrade the bootrom firmware from the Boot menu via XModem do
the following:
1 From the Boot Menu, select option 6 to display the following:
1.
2.
3.
0.
Set TFTP protocol parameter
Set FTP protocol parameter
Set XMODEM protocol parameter
Return to boot menu
Enter your choice(0-3):
2 Select option 3 to display the following:
Please select your download baudrate:
1. 9600
2.*19200
3. 38400
4. 57600
5. 115200
0. Return
Enter your choice(0-5):
3 Select option 2 to set the baudrate to 19200.
You will also need to change the baudrate on Hyperterminal to 19200
bps and select XModem protocol.
Bootrom Upgrade
85
4 Press Enter to start the download. The following information is displayed:
Now please start transfer file with XMODEM protocol
If you want to exit, Press <Ctrl+X>
Loading
...CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
5 As the file is downloading, start the XModem send file process with
terminal emulation software, such as Microsoft Hyperterminal.
When the download is complete, the following information is displayed:
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCdone!
Bootrom updating.........done!
86
CHAPTER 6: UPGRADING SOFTWARE
A
Null Modem Cable
PIN-OUTS
RJ-45 to RS-232 25-pin
Switch 4500
Cable connector: RJ-45 female
PC-AT Serial Cable
PC/Terminal
Cable connector: 25-pin male/female
Screen
TxD
RxD
Ground
RTS
CTS
Shell
3
2
5
7
8
1
3
2
7
4
20
Screen
RxD
TxD
Ground
RTS
DTR
DSR
DCD
DTR
6
1
4
5
6
8
CTS
DSR
DCD
only required if screen
always required
required for handshake
RJ-45 to 9-pin
Switch 4500
Cable connector: RJ-45 female
PC-AT Serial Port
Cable connector: 9-pin female
Screen
DTR
TxD
RxD
CTS
Ground
Shell
4
3
2
8
5
Shell
1
2
3
4
5
DSR
RTS
DCD
6
7
1
6
7
8
Screen
DCD
RxD
TxD
DTR
Ground
DSR
RTS
CTS
only required if screen
Required for handshake
Always required
required for handshake
always required
required for handshake
88
APPENDIX A: PIN-OUTS
Modem Cable
RJ-45 to RS-232 25-pin
Switch 4500
Cable connector: RJ-45 female
Ethernet Port RJ-45
Pin Assignments
Screen
TxD
RxD
RTS
CTS
DSR
Shell
3
2
7
8
6
Ground
DCD
DTR
5
1
4
RS-232 Modem Port
Cable connector: 25-pin male
1
2
3
4
5
6
7
8
20
Screen
TxD
RxD
RTS
CTS
DSR
Ground
DCD
DTR
10/100 and 1000BASE-T RJ-45 connections.
Table 10 Pin assignments
Pin Number
10/100
1000
1
Transmit Data +
Bidirectional Data A+
2
Transmit Data –
Bidirectional Data A-
3
Receive Data +
Bidirectional Data B+
4
Not assigned
Bidirectional Data C+
5
Not assigned
Bidirectional Data C-
6
Receive Data –
Bidirectional Data B-
7
Not assigned
Bidirectional Data D+
8
Not assigned
Bidirectional Data D-
Ports configured as MDI
Ethernet Port RJ-45 Pin Assignments
Table 11 Pin assignments
Pin Number
10/100
1000
Ports configured as MDIX
1
Receive Data +
Bidirectional Data B+
2
Receive Data -
Bidirectional Data B-
3
Transmit Data +
Bidirectional Data A+
4
Not assigned
Bidirectional Data A-
5
Not assigned
Bidirectional Data D+
6
Transmit Data –
Bidirectional Data D-
7
Not assigned
Bidirectional Data C+
8
Not assigned
Bidirectional Data C-
89
90
APPENDIX A: PIN-OUTS
B
TECHNICAL SPECIFICATIONS
Switch 4500 (26 Port)
Physical Dimensions
Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.)
Weight: 4.4kg (9.72 Ibs)
Environmental Requirements
Operating Temperature
0 ° to 40 °C (32 ° to 104 °F)
Storage Temperature
–10 ° to +70 °C (14 ° to 158 °F)
Operating Humidity
95% non-condensing
Standards
EN60068 to 3Com schedule (Package testing: paras 2.1, 2.2, 2.30, and 2.32.
Operational testing: paras 2.1, 2.2, 2.30 and 2.13).
Safety
Agency Certifications
UL 60950, EN60950, CSA 22.2 No. 60950, IEC 60950
EMC
Emissions
CISPRR 22 Class A, EN55022 Class A, FCC Part 15 Subpart B Class A,
ICES-003 Class A, EN61000-3-2, EN61000-3-3
Immunity
EN 55024
Power Consumption
35 watts maximum
Heat Dissipation
120 BTU/hour maximum
Power Supply
AC
Line Frequency
50/60Hz
Input Voltage
100-240 VAC
Current Rating
1.0A (amps) maximum
92
APPENDIX B: TECHNICAL SPECIFICATIONS
Switch 4500 (50 Port)
Physical Dimensions
Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.)
Weight: 4.7kg (10.9 lbs)
Environmental Requirements
Operating Temperature
0 ° to 40 °C (32 ° to 104 °F)
Storage Temperature
–10 ° to +70 °C (14 ° to 158 °F)
Operating Humidity
95% non-condensing
Standards
EN60068 to 3Com schedule (Package testing: paras 2.1, 2.2, 2.30, and 2.32.
Operational testing: paras 2.1, 2.2, 2.30 and 2.13).
Safety
Agency Certifications
UL60950, EN60950, CSA 22.2 No. 60950, IEC 60950
EMC
Emissions
CISPR 22 Class A, EN55022 Class A, FCC Part 15 Subpart B Class A,
ICES-003 Class A, VCCI Class A,
EN61000-3-2, EN61000-3-3
Immunity
EN 55024
Power Consumption
45 watts maximum
Heat Dissipation
155 BTU/hour maximum
Power Supply
AC
Line Frequency
50/60Hz
Input Voltage
100-240 VAC
Current Rating
1.0A (amps) maximum
Switch 4500 PWR (26 Port)
93
Switch 4500 PWR (26 Port)
Physical Dimensions
Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.)
Weight: 4.4kg (9.72 Ibs)
Environmental Requirements
Operating Temperature
0 ° to 40 °C (32 ° to 104 °F)
Storage Temperature
–10 ° to +70 °C (14 ° to 158 °F)
Operating Humidity
95% non-condensing
Standards
EN60068 to 3Com schedule (Package testing: paras 2.1, 2.2, 2.30, and 2.32.
Operational testing: paras 2.1, 2.2, 2.30 and 2.13).
Safety
Agency Certifications
UL60950, EN60950, CSA 22.2 No. 60950, IEC 60950
EMC
Emissions
CISPR 22 Class A, EN55022 Class A, FCC Part 15 Subpart B Class A,
ICES-003 Class A, VCCI Class A,
EN61000-3-2, EN61000-3-3
Immunity
EN 55024
Power Consumption
60 watts maximum (not including PoE load)
Heat Dissipation
205 BTU/hour maximum (not including PoE load)
Power Supply
AC
Line Frequency
50/60Hz
Input Voltage
100-240 VAC
Current Rating
7.0A (amps) maximum (at maximum PoE load)
DC
Input Voltage
-53 - -55 VDC
Current Rating
12A (amps) maximum (at maximum PoE load)
Characteristics
SELV (Safety Extra Low Voltage), isolated from earth according to requirements
of IEEE-Std 802.3af
94
APPENDIX B: TECHNICAL SPECIFICATIONS
Switch 4500 PWR (50 Port)
Physical Dimensions
Height: 44 mm (1.7 in.) x Width: 440 mm (17.3 in.) x Depth: 274 mm (10.8 in.)
Weight: 4.7kg (10.9 lbs)
Environmental Requirements
Operating Temperature
0 ° to 40 °C (32 ° to 104 °F)
Storage Temperature
–10 ° to +70 °C (14 ° to 158 °F)
Operating Humidity
95% non-condensing
Standards
EN60068 to 3Com schedule (Package testing: paras 2.1, 2.2, 2.30, and 2.32.
Operational testing: paras 2.1, 2.2, 2.30 and 2.13).
Safety
Agency Certifications
UL60950, EN60950, CSA 22.2 No. 60950, IEC 60950
EMC
Emissions
CISPR 22 Class A, EN55022 Class A, FCC Part 15 Subpart B Class A,
ICES-003 Class A, VCCI Class A,
EN61000-3-2, EN61000-3-3
Immunity
EN 55024
Power Consumption
70 watts maximum (not including PoE load)
Heat Dissipation
240 BTU/hour maximum (not including PoE load)
Power Supply
AC
Line Frequency
50/60Hz
Input Voltage
100-240 VAC
Current Rating
7.0A (amps) maximum (at maximum PoE load)
DC
Input Voltage
-53 - -55 VDC
Current Rating
19.5A (amps) maximum (at maximum PoE load)
Characteristics
SELV (Safety Extra Low Voltage), isolated from earth according to requirements
of IEEE-Std 802.3af
RPS
Standards Supported
SNMP
SNMP protocol (RFC 1157)
MIB-II (RFC 1213)
Terminal Emulation
Telnet (RFC 854)
Protocols Used for Administration
Bridge MIB (RFC 1493)
UDP (RFC 768)
RMON MIB II (RFC 2021)
IP (RFC 791)
Remote Monitoring MIB (RFC
1757)
ICMP (RFC 792)
MAU MIB (RFC 2239)
MIB II Traps (RFC 1215)
RS232 (RFC 1659)
Interfaces (RFC 2233)
Ether-like MIB (RFC 2665)
MAU MIB (RFC 2668)
Bridge extensions (RFC 2674)
TCP (RFC 793)
ARP (RFC 826)
TFTP (RFC 783)
DHCP (RFC 2131, RFC 2132, RFC 1534)
BOOTP (RFC 951, RFC 1497)
Network Login (IEEE 802.1x)
RADIUS (RFC 2618, 2620)
Link aggregation (IEEE 802.3ad)
RPS
Safety Requirements
The RPS shall comply with the following safety standards:
EN60950, UL60950, CSA22.2 60950, IEC60950
EMC
Emissions
CISPR 22 Class A, EN55022 Class A, FCC Part 15 Subpart B Class A,
ICES-003 Class A, AS/NZS 3548 Class A, VCCI Class A,
EN61000-3-2, EN61000-3-3
Immunity
EN 55024
Output Specifications
Must meet DC power supply specifications for each unit (as defined above).
Earthing Lead
Safety Requirements
The Earthing Lead shall comply with the following safety standards:
UL Subject 758, UL 1581 and CSA C22.2 No. 210
UL VW-1 and CSA FT1 Vertical Flame Test
Voltage Rating
600V
AWG
12
Insulation Thickness
0.4mm
Insulation Colour
Green/Yellow
95
96
APPENDIX B: TECHNICAL SPECIFICATIONS
C
Register Your
Product
OBTAINING SUPPORT FOR 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.
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.
Purchase
Value-Added
Services
To enhance response times or extend warranty benefits, contact 3Com or
your authorized 3Com reseller. Value-added services like 3Com ExpressSM
and GuardianSM can include 24x7 telephone technical support, software
upgrades, onsite assistance or advance hardware replacement.
Experienced engineers 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 Professional Services is available at
http://www.3com.com/
Contact your authorized 3Com reseller or 3Com for a complete list of the
value-added services available in your area.
98
APPENDIX C: OBTAINING SUPPORT FOR YOUR PRODUCT
Troubleshoot
Online
You will find support tools posted on the 3Com web site at
http://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.
Access Software
Downloads
Software Updates are the bug fix / maintenance releases for the version
of software initially purchased with the product. In order to access these
Software Updates you must first register your product on the 3Com web
site at http://eSupport.3com.com/
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 http://www.3com.com/
Software Upgrades are the software 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 enable telephone support and other service benefits, you must first
register your product at http://eSupport.3com.com/
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.
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
■
A list of system hardware and software, including revision level
■
Diagnostic error messages
■
Details about recent configuration changes, if applicable
Contact Us
99
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.
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.
Telephone numbers are correct at the time of publication. Find a current
directory of contact information posted on the 3Com web site at
http://csoweb4.3com.com/contactus/
Country
Telephone Number
Country
Telephone Number
Asia, Pacific Rim Telephone Technical Support and Repair
Australia
Hong Kong
India
Indonesia
Japan
Malaysia
New Zealand
Pakistan
1 800 678 515
800 933 486
+61 2 9424 5179 or
000800 650 1111
001 803 61009
00531 616 439 or
03 3507 5984
1800 801 777
0800 446 398
+61 2 9937 5083
Philippines
P.R. of China
Singapore
S. Korea
Taiwan
Thailand
1235 61 266 2602 or
1800 1 888 9469
800 810 3033
800 6161 463
080 333 3308
00801 611 261
001 800 611 2000
You can also obtain support in this region using the following e-mail: apr_technical_support@3com.com
Or request a repair authorization number (RMA) by fax using this number:
Europe, Middle East, and Africa Telephone Technical Support and Repair
From anywhere in these
regions, call:
+44 (0)1442 435529
From the following countries, you may use the numbers shown:
+ 65 543 6348
100
APPENDIX C: OBTAINING SUPPORT FOR YOUR PRODUCT
Country
Telephone Number
Country
Telephone Number
Austria
Belgium
Denmark
Finland
France
Germany
Hungary
Ireland
Israel
Italy
01 7956 7124
070 700 770
7010 7289
01080 2783
0825 809 622
01805 404 747
06800 12813
1407 3387
1800 945 3794
199 161346
Luxembourg
Netherlands
Norway
Poland
Portugal
South Africa
Spain
Sweden
Switzerland
U.K.
342 0808128
0900 777 7737
815 33 047
00800 441 1357
707 200 123
0800 995 014
9 021 60455
07711 14453
08488 50112
0870 909 3266
You can also obtain support in this region using the following URL:
http://emea.3com.com/support/email.html
Latin America Telephone Technical Support and Repair
Antigua
Argentina
Aruba
Bahamas
Barbados
Belize
Bermuda
Bonaire
Brazil
Cayman
Chile
Colombia
Costa Rica
Curacao
Ecuador
Dominican Republic
1 800 988 2112
0 810 444 3COM
1 800 998 2112
1 800 998 2112
1 800 998 2112
52 5 201 0010
1 800 998 2112
1 800 998 2112
0800 13 3COM
1 800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
1 800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
Nicaragua
Panama
Paraguay
Peru
Puerto Rico
Salvador
Trinidad and Tobago
Uruguay
Venezuela
Virgin Islands
You can also obtain support in this region using the following:
Spanish speakers, enter the URL:
http://lat.3com.com/lat/support/form.html
Portuguese speakers, enter the URL:
http://lat.3com.com/br/support/form.html
English speakers in Latin America should send e-mail to:
lat_support_anc@3com.com
US and Canada Telephone Technical Support and Repair
1 800 876 3266
AT&T +800 998 2112
57 1 657 0888
AT&T +800 998 2112
1 800 998 2112
571 657 0888
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
AT&T +800 998 2112
1 800 998 2112
AT&T +800 998 2112
AT&T +800 998 2112
57 1 657 0888
INDEX
INDEX
101
registered 67
IP configuration 41
L
LEDs 17
logging in as a default user 56
A
access levels of default users 56
automatic setup 49
3Com Network Director 50
console port 50
B
browsers
choosing 54
M
management
methods 38
preparing for 42
setting up 37, 40
manual setup
console port 43
front panel port 46
P
default
settings 20
users 56
documentation
related 8
passwords
of default users 56
pin assignments
modem cable 88
null modem cable 87
RJ45 88
serial cable 87
pin-outs 87
ports 15
power over ethernet (PoE) 30
power socket 19
powering-up a Switch 4500 32
problem solving 63, 71
communication problems 67
hardware problems 65
IP addressing 65
LEDs 64
E
R
C
cable
pin-outs 87
command line interface
management 38
console port 16
conventions
notice icons, About This Guide 8
D
earthing cable 30
redundant power supply (RPS) 24
related documentation 8
RPS connection 32
F
factory defaults 20
S
SFP
H
hardware features 13
I
IP addressing
transceivers 34
Simple Network Management Protocol. See SNMP
SNMP 55
SNMP management 39
setting up 55
socket
102
INDEX
power 19
specifications, system 91
SSH 53
Switch
automatic setup 49
Switch 4500
dimensions 91
features 13
power socket 19
powering-up 32
size 91
weight 91
XRN Distributed Fabric 59
system specifications 91
T
troubleshooting 63, 71
U
upgrading software
bootrom 78
bootrom via FTP 83
bootrom via TFTP 83
bootrom via XModem 84
file distribution 75
FTP 76, 80
TFTP 74, 80
XModem 77, 81
W
Web browsers
choosing 54
web interface
choosing a browser 54
web interface management 39
setting up 54
X
XModem 77
XRN
Distributed Fabric 59
Guidelines for Interconnecting Units 60
How to Interconnect Units 59
Unit Numbering 61