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3Com® Switch 8800 Family
Installation Guide
Switch 8807
Switch 8810
Switch 8814

www.3Com.com
Part No. 10015593, Rev. AB
Published: June, 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
form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without
written permission from 3Com Corporation.
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without obligation on the part of 3Com Corporation to provide notification of such revision or change.
3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied or
expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality,
and fitness for a particular purpose. 3Com may make improvements or changes in the product(s) and/or the program(s)
described in this documentation at any time.
If there is any software on removable media described in this documentation, it is furnished under a license agreement
included with the product as a separate document, in the hard copy documentation, or on the removable media in a
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be provided to you.
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CONTENTS

ABOUT THIS GUIDE
Conventions 5
Related Documentation 6
About this Document 6

PRODUCT OVERVIEW
Preface 7
General Architecture 10
Fabric Modules 17
System Specifications 24
Software Features 25

I/O AND APPLICATION MODULES
Overview 29
3C17511 1-port 10GBASE-X (XENPAK) 29
3C17512 2-port 10GBASE-X (XFP) Module 30
3C17513 12-port 1000BASE-X (SFP) Module 31
3C17514 24-port 1000BASE-X (SFP) Module 32
3C17516 24-port 10/100/1000BASE-T Module 33
3C17525 1-port 10GBASE-X Advanced (XENPAK) Module 33
3C17526 4-port 10GBASE-X (XFP) Module 34
3C17527 2-port 10GBASE-X (XFP) Advanced Module 35
3C17528 48port 10/100/1000 BASE-T (RJ-45) Module 36
3C17530 24-port 1000BASE-X (SFP) Advanced Module 37
3C17531 24-port 10/100/1000BASE-T Advanced Module 37
3C17532 48-port 10/100/1000 BASE-T (RJ-45) Access Module 38
3C17533 24-port 1000BASE-X (SFP) IPv6 Module 39
3C17534 24-port 10/100/1000BASE-T IPv6 Module 40
3C17536 4-port 10GBASE-X (XFP) QUAD IPv6 Module 40
3C17537 2-port 10GBASE-X (XFP) IPv6 Module 41
3C17538 48-port 1000BASE-X (SFP) IPv6 Module 42
Application Modules 43
Transceivers 46
Switch 8800 Port Densities 47

INSTALLATION PREPARATION
Safety Recommendations

Examining Installation Site
Installation Tools 52

SWITCH INSTALLATION
Confirming Installation Preparation 53
Installation Flow 53
Mounting the Switch in User-Supplied Cabinet
Connecting PGND Wire and Power Cord 59
Installing Cabling Rack 64
Installing Fan Tray 64
Installing PoE Lightning Protection Box 65
Installing I/O modules 66
Connecting Interface Cables 67
Cable Routing Recommendations 70
Cable Management 70
Verifying the Installation 73

DEBUGGING THE SYSTEM
Setting up Configuration Environment 75
Powering and Booting the Switch 76

SWITCH MONITORING AND MAINTENANCE
Monitoring the Switch 79
Hardware Maintenance 81
Upgrading the Software 86
Password Loss 95

LIGHTNING PROTECTION OF THE SWITCH
Installing a Lightning Arrester for the AC Power 97
Installing a Lightning Arrester for the Network Port 98

3COM NETWORK MANAGEMENT
3Com Network Supervisor 101
3Com Network Director 102
3Com Network Access Manager 102
3Com Enterprise Management Suite 103
Integration Kit with HP OpenView Network Node Manager

103

ABOUT THIS GUIDE

This guide describes the 3Com® Switch 8800 and how to install hardware,
configure and boot software, and maintain software and hardware. This guide
also provides troubleshooting and support information for your switch.
This guide is intended for Qualified Service personnel who are responsible for
configuring, using, and managing the switches. It assumes a working knowledge
of local area network (LAN) operations and familiarity with communication
protocols that are used to interconnect LANs.

Always download the Release Notes for your product from the 3Com World Wide
Web site and check for the latest updates to software and product
documentation:
http://www.3com.com

Conventions

Table 1 lists icon conventions that are used throughout this guide.
Table 1 Notice Icons
Icon

Notice Type

Description

Information note

Information that describes important features or
instructions.

c
w

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.

Table 2 lists text conventions that are used throughout this guide.
Table 2 Text Conventions
Convention

Description

Screen displays

This typeface represents information as it appears on the
screen.

Keyboard key names

If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+), for example:
Press Ctrl+Alt+Del

The words “enter” and “type” When you see the word “enter” in this guide, you must type
something, and then press Return or Enter. Do not press
Return or Enter when an instruction simply says “type.”

ABOUT THIS GUIDE

Table 2 Text Conventions
Convention

Description

Words in italics

Italics are used to:
Emphasize a point.
Denote a new term at the place where it is defined in the
text.
Identify menu names, menu commands, and software
button names.
Examples:
From the Help menu, select Contents.
Click OK.

Words in bold

Related
Documentation

Boldface type is used to highlight command names. For
example, “Use the display user-interface command
to...”

The following manuals offer additional information necessary for managing your
Switch 8800:
■

Switch 8800 Command Reference Guide — Provides detailed descriptions of
command line interface (CLI) commands, that you require to manage your
Switch 8800.

■

Switch 8800 Configuration Guide— Describes how to configure your Switch
8800 using the supported protocols and CLI commands.

■

Switch 8800 Release Notes — Contains the latest information about your
product. If information in this guide differs from information in the release
notes, use the information in the Release Notes.

These documents are available in Adobe Acrobat Reader Portable Document
Format (PDF) on the 3Com World Wide Web site:
http://www.3com.com/

About this Document

3Com supports only the commands that are described in this document set. You
may encounter commands in the device’s command line interface (CLI) that are
not described in this guide. Any command that you see in the CLI but is not
described in this guide is not supported in this version of the software.
Unsupported commands may result in a loss of data and you enter them at your
own risk.

1
Preface

PRODUCT OVERVIEW

The 3Com Switch 8800 Family of Routing Switches (referred to as the Switch 8800
Family) are intelligent, multi-layer modular LAN switches and are ideal for
enterprise environments where non-stop availability of critical applications and the
highest performance, security, and granular control are required. The Switch 8800
Family delivers high density Gigabit and 10 Gigabit switching in an integrated
chassis platform. Built-in support for IPv6, MPLS, Power over Ethernet (PoE), and
1.44 Tbps backplane capacity ensures unprecedented investment protection.
Resilient Layer-3 routing, hot-swap modules, and redundant power, along with
sub one-second fabric fail over on the Switch 8800, ensure (24 x 7) availability to
support the most demanding enterprise core and campus environments.
Advanced Quality of Service features such as bandwidth management and packet
classification optimize quality for real-time voice and video applications. Intrusion
prevention security capabilities such as IEEE 802.1X Network Login and Access
Control Lists ensure that only authorized users can access network resources.
The Switch 8800 is focused on delivering functionality towards the higher end of
the large Enterprise, with a 4-port 10 Gigabit Module, high density 48-port
Gigabit Modules, as well as a group of Advanced Modules with support for larger
routing tables and/or MPLS. Power over Ethernet (PoE) is built into all Switch
8800s.
Application modules for the Switch 8800 provide the flexibility to add a firewall,
IPsec encryption, network monitoring with NetFlow, and Layer 2 VPN networking
using Virtual Private LAN Service (VPLS) by simply adding a module to the chassis.

CHAPTER 1: PRODUCT OVERVIEW

Currently, the Switch 8800 Family include the following models:
■

Switch 8807: This model provides up to 600 Gbps switching capacity. It
supports (for example) up to 240 GE ports and 20 x 10GE ports.

Figure 1 3Com Switch 8807 (7-Slot Chassis)

■

Switch 8810: This model provides up to 960 Gbps switching capacity. It
supports (for example) up to 192 GE ports and 32 x 10GE ports.

Figure 2 3Com Switch 8810 (10-Slot Chassis)

Preface

■

Switch 8814: This model provides up to 1.44 Tbps switching capacity. It
supports (for example) up to 576 GE ports and 48 x 10GE ports.

Figure 3 3Com Switch 8814 (14-Slot Chassis)

CHAPTER 1: PRODUCT OVERVIEW

General Architecture

Chassis and Slots

The Switch 8800 Family use integrated chassis, which can be subdivided into
power area, board area, backplane and fan area.
Switch 8807
Figure 4 Switch 8807 slots

Fabric
Fabric

Fan tray

I/O Module
I/O Module
I/O Module
I/O Module
I/O Module

AC PSU

PoE
Entry

AC PSU

■

The Switch 8807 chassis provides seven slots in its board area: The top two
accommodate fabrics, which can operate in 1+1 redundancy mode; the
remaining five accommodate I/O or application modules, which you can select
from various available models. All modules in this area are hot-swappable.

■

At the bottom of the chassis is the power area that can accommodate one PoE
entry module and two PSUs. The two PSUs are online-swappable; they can
operate in 1+1 redundancy mode. The switch supports AC power inputs.

■

On the right of the chassis is the fan area that contains one vertical
hot-swappable fan tray. The fan tray draws and exhausts air from left to right.

General Architecture

Switch 8810
Figure 5 Switch 8810 slots

Fan tray

I/O Module
I/O Module
I/O Module
I/O Module
Fabric
Fabric
I/O Module
I/O Module
I/O Module
I/O Module
AC PSU

PoE
Entry

AC PSU

■

The Switch 8810 chassis provides ten slots in its board area: The middle two
accommodate fabric modules, which can operate in 1+1 redundancy mode;
the remaining eight accommodate I/O or application modules, which you can
select from various available models. All modules in this area are
hot-swappable.

■

On the right of the chassis is the fan area that contains one vertical
hot-swappable fan tray. The fan tray draws and exhausts air from left to right.

CHAPTER 1: PRODUCT OVERVIEW

Switch 8814
Figure 6 Switch 8814 slots

Backplane

PoE
entry

Fan tray 2

AC PSU

Fan tray 1

I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
Fabric
Fabric
I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
AC PSU

■

The Switch 8814 chassis provides 14 slots in its board area: The middle two
accommodate fabric modules, which can operate in 1+1 redundancy mode;
the remaining 12 accommodate I/O or application modules, which you can
select from various available models. All modules in this area are
hot-swappable.

■

At the bottom of the chassis is the power area that can accommodate one PoE
entry module and two PSUs. The two PSUs are online-swappable. The switch
supports AC power inputs.

■

On the right of the chassis is the fan area that contains two vertical
hot-swappable fan trays. The fan trays draw and exhaust air from left to right.

The backplane of the Switch 8800 Family allows high-speed data exchange
between fabrics and I/O modules, as well as the exchange of various management
and control signals in the system.
Functions
The following are the main functions of the backplane:
■

Providing communication channels for signal exchange between boards

■

Supporting board hot-swapping

■

Supporting auto-discovering boards in slots

■

Connecting PSUs, distributing power and providing monitor channels to
various components (PSUs, fabrics and I/O modules) in the chassis.

Structure
■

Switch 8807

General Architecture

The Switch 8807 uses a passive backplane, which provides five I/O module
interfaces, two fabric interfaces, one fan interface, and three -48V power
interfaces (two for PSUs and one for PoE entry module).
■

Switch 8810

The Switch 8810 uses a passive backplane, which provides eight I/O module
interfaces, two fabric interfaces, one fan interface, and three -48V power
interfaces (two for PSUs and one for PoE entry module).
■

Switch 8814

The Switch 8814 uses a passive backplane, which provides 12 I/O module
interfaces, two fabric interfaces, two fan interfaces, and three -48V power
interfaces (two for PSUs and one for PoE entry module).
AC Power System

■

The Switch 8800 Family supports AC power inputs.

■

The Switch 8800 Family supports 1+1 power supply redundancy.

■

The PSUs of the Switch 8800 Family are online-swappable.

The Switch 8800 Family supports AC power inputs. The power frame is at the
bottom of the chassis, with a height of 3U. In the same slot, you can insert an AC
PSU. The power frame is in different compartment from the functional board
frame and connected to the latter with cables, which are routed along the back of
the chassis. The power supply is cooled by built-in fans of the PSUs, which draw air
into the chassis from the front and exhaust air out of the chassis from the back.
Table 1 Specifications for AC PSUs
Specifications
Item

Switch 8807

Switch 8810

Switch 8814

Rated voltage
range

100 to 240 VAC,
50/60 Hz

100 to 120 VAC, 60 Hz 100 to 120 VAC, 60 Hz

Max voltage range

90 to 264 VAC, 50/60
Hz

Max input current

15 A

Max output power

1200 W

1200 W (90 to 160 V)

200 to 240 VAC, 50 Hz 200 to 240 VAC, 50 Hz

2000 W (160 to 264 V) 2000 W (160 to 264 V)

PoE Power Supply

The Switch 8800 Family supports Power over Ethernet (PoE). With this feature, a
Switch 8800 Family switch equipped with an external PoE power supply and
PoE-capable modules can deliver 48 VDC to its remotely powered devices (PDs,
such as IP phones, WLAN APs and network cameras) through twisted pairs.
■

The Switch 8800 Family can supply power to remote PDs through the Ethernet
electrical ports on the I/O modules. Each I/O module can simultaneously supply
power to up to 48 PDs with the maximum distance of 100 m (328.1 feet).

■

Each Ethernet port can deliver up to 15.4 W to its PD.

CHAPTER 1: PRODUCT OVERVIEW

■

A Switch 8800 supports up to 4500 W (220 V)/2250 W (110 V) power to its
PDs. It determines whether to deliver power to a newly detected PD depending
on the power it currently supplied.

PoE entry area
The PoE-supported Switch 8807/Switch 8810/Switch 8814 chassis has a PoE entry
area between the two power supply units. You can insert a PoE 3C17510 Switch
8800 PoE Entry Module into this area, and connect this module to a 3C17509
Switch 8800 External PoE Power Rack so as to import the output power of the
External Power Rack unit.
Figure 7 PoE entry module

External PoE Power Rack (3C17509)
The Switch 8800 External Power Rack is available for the Switch 8807, Switch
8810, and Switch 8814. The External Power Rack has three AC inputs and one DC
outputs. Figure 8 shows its front panel.
Figure 8 Front panel of the 3C17509 Switch 8800 External Power Rack PoE power supply

The external PoE power system supports 2+1 redundancy and online-swapping of
PSUs.
To implement the PoE function on the Switch 8800 Family, PoE-capable interface
module is required. There are two modules are PoE-capable:
■

3C17528 Switch 8800 48-port 10/100/1000BASE-T

■

3C17532 Switch 8800 48-port 10/100/1000BASE-T Access

Both of these I/O Modules are PoE-capable, and will function with the addition of
a 3C17529 PoE Option (PoE DIMM Module).

General Architecture

Table 2 describes typical equipment configurations and specifications of external
PoE power system.
Table 2 Typical equipment configurations and specifications of external PoE power system
Item

Description

Physical dimensions (H x W x D)

177 x 486 x 320.5 mm (7.0 x 19.1 x 12.6 in.)

System controller

One

Rectifier

Two NP2500UAC (required) + one redundant
NP2500UAC (optional)

AC accessory

Three AC inputs and switches
Three-phase AC voltage detection circuit
Input voltage range: 90 to 290 VAC; rated voltage
and current: 250 VAC, 20 A

DC accessory

A single DC output, with max output current of
93 A

Max power consumption

4500 W

The external PoE power system has monitor function. It provides one system
monitoring module, one RS232 and two RS485 monitoring interfaces. The system
monitoring module reports the running information of the PSUs in the system to a
fabric through RS232 or RS485 interface and indicates alarm status by the alarm
LED (ALM). You can connect cables to the interfaces from the front as well as the
rear of the frame.

The external PoE power system for the Switch 8800 Family only supports the
RS485 monitoring interface.
Table 3 LEDs of external PoE power system

MBUS

LED

Normal Abnormal
Label Color state
state
Abnormal reason

Input power LED

Green ON

OFF

Loss of AC input power, or blown
fuse

Output power LED

Green ON

OFF

No DC output from PSU

Fault LED

Fault

Red

OFF

Irreversible fault occurred in PSU

Running status LED RUN

Green ON

OFF

PSU shutdown or PSU running
trouble

Alarm LED

Red

Loss of AC input power,
under-voltage or over-voltage
input, under-voltage or
over-voltage output, or PSU fault

ALM

OFF

Introduction
The MBUS is a service-independent maintenance and test bus. No service traffic
goes through the MBUS. The shutdown and reset of the MBUS does not affect the
services on the switch, and faults that have occurred on modules do not affect the
MBUS.
Through the MBUS, the system instructs the MBUS modules on individual cards to
power on/off the cards one by one in turn, thus prevent power surging. The MBUS
module software must support online upgrade.

CHAPTER 1: PRODUCT OVERVIEW

Role and function
The MBUS system is powered by 5 V from the MBUS on the fabric. The 5 V power
on the two fabrics are redundant to each other.
Each MBUS module is attached to the MBUS, which contains two control lines:
MBUS0 and MBUS1.
Each card has an independent MBUS module, those on the fabrics are primary
MBUS modules, and those on application modules are secondary MBUS modules.
When the fabrics operate in redundancy mode, the MBUS module on the active
fabric is the active module, and the one on the standby fabric is the standby
module.
The MBUS uses a controller area network (CAN) bus as its control bus, that uses
the 1:1 hot backup and transfers control information at 1 Mbps.
Fan Tray

■

The Switch 8807 uses one 25 W fan tray, which contains four 120 x 120 x 25.4
mm (4.7 x 4.7 x 1.0 in.) axial fan units. The fans can be governed in two
modes: fabric-controlled or temperature-controlled. They operate at -48 VDC
supplied from the backplane.

■

The Switch 8810 uses one 35 W fan tray, which contains six 120 x 120 x 25.4
mm (4.7 x 4.7 x 1.0 in.) axial fan units. The fans can be governed in two
modes: fabric-controlled or temperature-controlled. They operate at -48 VDC
supplied from the backplane.

■

The Switch 8814 uses two 25 W fan trays, each of which contains four 120 x
120 x 25.4 mm (4.7 x 4.7 x 1.0 in.) axial fan units (and totally eight for the two
fan trays). The fans can be governed in two modes: fabric-controlled or
temperature-controlled. They operate at -48 VDC supplied from the backplane.

Figure 9 Fan tray panel of the Switch 8800 Family

Fabric Modules

Table 4 LEDs on fan tray panel

Fabric Modules

LED

Color

Status

RUN

Green

OFF

The fan tray is faulty.

The fan tray is operating normally.

ALM

Red

OFF

The fan tray is operating normally.

The fan tray is faulty.

The Switch Fabric serves as the core of the Switch 8800 Family.The following fabric
models are available to the Switch 8800 Family:
■

3C17508 - 3Com Switch 8800 360 Gbps Fabric

■

3C17539 - 3Com Switch 8800 720 Gbps Fabric

These fabric modules provide:

360 Gbps Switch Fabric

■

Route calculating and forwarding table maintenance.

■

Integrating Crossbar switching fabric to accomplish service exchange between
different boards.

■

System configuration and monitoring functions, which allows the system to
monitor other boards and upgrade/reset service board software.

Technical specifications
This model applies to the 3C17508. See Table 5 for its specifications.
Table 5 360 Gbps Switch Fabric specifications
Item

Specifications

CPU

MPC755

Boot ROM

512 KB

SDRAM

512 MB (expandable to 1 GB)

Physical dimensions (W x D)

366.7 x 340 mm (14.4 x 13.4 in.)

Port

One Console port, for local configuration management
One AUX port, for remote dialup configuration management
One 10Base-T/100Base-TX port, for software upgrade and
network management
One RS232/485 port, for connecting external PoE power frame
to provide the PoE function
One hot-swap-supported CF port

Max power consumption

60 W

Panel
On its panel, the 360 Gbps Switch Fabric provides a CF port, CF LED (CFS),
10Base-T/100Base-TX port, RS232/485 port, Console port, AUX port, RESET
button, I/O module status LEDs, and 360 Gbps Switch Fabric status LEDs (SFS,
ACT, ALM, RUN) in turn, as shown in Figure 10.

CHAPTER 1: PRODUCT OVERVIEW

Figure 10 360 Gbps Switch Fabric panel

Compact Flash (CF slot)
The 360 Gbps Switch Fabric module provides a CF slot to accommodate a
standard CF card, where you can save logging information, host version
information, alarming and other diagnostic information and conveniently upgrade
software online. The fabric ships with a CF memory card.
Management Ports
The Management 10Base-T/100Base-TX port uses an RJ-45 connector. It can
connect a background terminal for system program loading and debugging, or
connect a network management station for remote system management.
Table 6 Management 10Base-T/100Base-TX port specifications
Item

Description

Connector

RJ-45

Number of ports

One

Rate

10 Mbps, half duplex/full duplex
100 Mbps, half duplex/full duplex

Max. transmission segment over the selected
medium

100 m (328 ft.) over the category-5 twisted
pair cable (crossover cable is required).

Service

System program upgrade and network
management

The following table describes the status LEDs for the management
10Base-T/100Base-TX port.
Table 7 Status LEDs for the management 10Base-T/100Base-TX port
LED

Status

LINK

OFF

No link is present.

A link is present.

OFF

No packets are transmitted/received on the port.

Blinking

Packets are being transmitted/received on the port.

ACT

■

RS232/485 port

The RS232/485 port uses RJ-45 connector, for connecting external PoE power
frame when supported and monitoring its status.
Table 8 RS232/485 port specifications
Item

Description

Connector

RJ-45

Number of ports

One RS 232 port and one RS485 port

Fabric Modules

Table 8 RS232/485 port specifications
Item

Description

Service

The port for monitoring and communication with the external subsystem,
such as external PoE power supply module

■

Console port

The Console port uses an RJ-45 connector. It can be connected to a background
terminal for system debugging, maintenance, management, and host software
loading.
Table 9 Console port specifications

Item

Description

Connector

RJ-45

Standard

Asynchronous EIA/TIA-232

Baud rate

9600 bps (default)

Transmission
segment

15 m (49 ft.)

Service

Connects a serial port of a local PC and runs terminal emulation on the
PC.

You can choose your own baud rate for the Console port.
■

AUX port

The AUX port uses an RJ-45 connector. The port can serve as a backup port for the
Console port to connect a background terminal, or directly connect a modem
device, for remote system debugging, configuration, maintenance and
management.
Table 10 AUX port specifications
Item

Description

Connector

RJ-45

Standard

Asynchronous EIA/TIA-232

Service

Connects a serial port of a PC (through a Modem pair for a remote PC) and runs
terminal emulation on the PC.

RESET button
You can press the RESET button on the panel to reset the 360 Gbps Switch Fabric
module.
Status LEDs
■

CF status LED

You can learn the operating status of the CF card by reading the CF status LED on
the panel.

CHAPTER 1: PRODUCT OVERVIEW

Table 11 CF status LED
LED

Status

CFS

The CF card is in position and is idle. You cannot remove the card.

Blinking

The CF card is in position and reading/writing data. You cannot remove
the card.

OFF

The CF card is out of position or offline (you can force the in-position CF
card to go offline using the appropriate background command). You can
remove/insert the card.

■

Status LEDs for I/O module

The 360 Gbps Switch Fabric module has 12 pairs of LEDs to indicate the operating
status of 12 I/O module.
Table 12 Status LEDs for I/O module
LED

Status

RUN

The module is faulty.

OFF

The module is faulty or out of position.

Blinking (1s)

The module is running normally.

Fast blinking (125 ms) The module is booting or not registered successfully.
ALM
0~5,
8~13
■

The module has alarms.

OFF

The module has no alarms or is out of position.

Indicate slots 0 through 5 and slots 8 through 13

Status LEDs for the 360 Gbps Switch Fabric module

You can learn the operating status of 360 Gbps Switch Fabric module by reading
the SFS, ACT, ALM and RUN LEDs on it. The following table gives a summary of
the four LEDs.
Table 13 Status LEDs for the 360 Gbps Switch Fabric module
360 Gbps Switch
Fabric LED

Status

SFS

The switching fabric unit is active.

OFF

The switching fabric unit is standby.

Green

The 360 Gbps Switch Fabric module is faulty.

OFF

The 360 Gbps Switch Fabric module is faulty.

Green blinking

The 360 Gbps Switch Fabric module runs normally.

Red

The 360 Gbps Switch Fabric module has alarms.

OFF

The 360 Gbps Switch Fabric module has no alarms.

Green

The 360 Gbps Switch Fabric module is active.

OFF

The 360 Gbps Switch Fabric module is standby.

RUN

ALM
ACT

Fabric Modules

720 Gbps Switch Fabric

Technical specifications
This model applies to the 3C17539. See Table 5 for its specifications.
Table 14 720 Gbps Switch Fabric specifications
Item

Specifications

CPU

MPC755

Boot ROM

512 KB

SDRAM

512 MB (expandable to 1 GB)

Physical dimensions (W x D)

366.7 x 340 mm (14.4 x 13.4 in.)

Port

Max power consumption

110 W

Panel
On its panel, the 720 Gbps Switch Fabric provides a CF slot, CF LED (CFS),
10Base-T/100Base-TX port, RS232/485 port, Console port, AUX port, RESET
button, I/O module status LEDs, and 360 Gbps Switch Fabric status LEDs (SFS,
ACT, ALM, RUN) in turn, as shown in Figure 10. The fabric ships with a CF memory
card.
Figure 11 720 Gbps Switch Fabric panel

Compact Flash (CF slot)
The 720 Gbps Switch Fabric module provides a CF port to accommodate a
standard CF card, where you can save logging information, host version
information, alarming and other diagnostic information and conveniently upgrade
software online.
Management Ports
The Management 10Base-T/100Base-TX port uses an RJ-45 connector. It can
connect a background terminal for system program loading and debugging, or
connect a network management station for remote system management.
Table 15 Management 10Base-T/100Base-TX port specifications
Item

Description

Connector

RJ-45

Number of ports

One

Rate

10 Mbps, half duplex/full duplex
100 Mbps, half duplex/full duplex

CHAPTER 1: PRODUCT OVERVIEW

Table 15 Management 10Base-T/100Base-TX port specifications
Item

Description

Max. transmission segment over the selected
medium

100 m (328 ft.) over the category-5 twisted
pair cable (crossover cable is required).

Service

System program upgrade and network
management

The following table describes the status LEDs for the management
10Base-T/100Base-TX port.
Table 16 Status LEDs for the management 10Base-T/100Base-TX port
LED

Status

LINK

OFF

No link is present.

A link is present.

OFF

No packets are transmitted/received on the port.

Blinking

Packets are being transmitted/received on the port.

ACT

■

RS232/485 port

The RS232/485 port uses RJ-45 connector, for connecting external PoE power
frame when supported and monitoring its status.
Table 17 RS232/485 port specifications
Item

Description

Connector

RJ-45

Number of ports

One RS 232 port and one RS485 port

Service

The port for monitoring and communication with the external subsystem,
such as external PoE power supply module

■

Console port

The Console port uses an RJ-45 connector. It can be connected to a background
terminal for system debugging, maintenance, management, and host software
loading.
Table 18 Console port specifications

Item

Description

Connector

RJ-45

Standard

Asynchronous EIA/TIA-232

Baud rate

9600 bps (default)

Transmission
segment

15 m (49 ft.)

Service

Connects a serial port of a local PC and runs terminal emulation on the
PC.

You can choose your own baud rate for the Console port.
■

AUX port

Fabric Modules

Description

Connector

RJ-45

Standard

Asynchronous EIA/TIA-232

Service

Connects a serial port of a PC (through a Modem pair for a remote PC) and runs
terminal emulation on the PC.

RESET button
You can press the RESET button on the panel to reset the 720 Gbps Switch Fabric
module.
Status LEDs
■

CF status LED

You can learn the operating status of the CF card by reading the CF status LED on
the panel.
Table 20 CF status LED
LED

Status

CFS

The CF card is in position and is idle. You cannot remove the card.

Blinking

The CF card is in position and reading/writing data. You cannot remove
the card.

OFF

The CF card is out of position or offline (you can force the in-position CF
card to go offline using the appropriate background command). You can
remove/insert the card.

■

Status LEDs for I/O module

The 720 Gbps Switch Fabric module has 12 pairs of LEDs to indicate the operating
status of 12 I/O module.
Table 21 Status LEDs for I/O module
LED

Status

RUN

The module is faulty.

OFF

The module is faulty or out of position.

Blinking (1s)

The module is running normally.

Fast blinking (125 ms) The module is booting or not registered successfully.
ALM
0~5,
8~13
■

The module has alarms.

OFF

The module has no alarms or is out of position.

Indicate slots 0 through 5 and slots 8 through 13

Status LEDs for the 720 Gbps Switch Fabric module

CHAPTER 1: PRODUCT OVERVIEW

You can learn the operating status of 720 Gbps Switch Fabric module by reading
the SFS, ACT, ALM and RUN LEDs on it. The following table gives a summary of
the four LEDs.
Table 22 Status LEDs for the 720 Gbps Switch Fabric module
360 Gbps Switch
Fabric LED

Status

SFS

The switching fabric unit is active.

OFF

The switching fabric unit is standby.

Green

The 720 Gbps Switch Fabric module is faulty.

OFF

The 720 Gbps Switch Fabric module is faulty.

Green blinking

The 720 Gbps Switch Fabric module runs normally.

Red

The 720 Gbps Switch Fabric module has alarms.

OFF

The 720 Gbps Switch Fabric module has no alarms.

Green

The 720 Gbps Switch Fabric module is active.

OFF

The 720 Gbps Switch Fabric module is standby.

RUN

ALM
ACT

RESET button
You can press the RESET button on the panel to reset the 720 Gbps Switch Fabric.
Status LEDs
See the section “Status LEDs” on page 19.

System Specifications

The following table summarizes the physical specifications of the Switch 8800
Family.
Table 23 Technical specifications of the Switch 8800 Family
Item

Switch 8807

Switch 8810

Switch 8814

Dimensions
(H x W x D)

486 x 436 x 450 mm 619 x 436 x 450 mm 753 x 436 x 450 mm
(19.1 x 17.2 x 17.7
(24.4 x 17.2 x 17.7
(29.6 x 17.2 x 17.7 in.)
in.)
in.)

Weight (full load) 600 kg (143 lb)

80 kg (176 lb)

100 kg (220 lb)

Max power
consumption

1200 W

2000 W

Switching
capacity (see
Note 1)

Fab360: 600 Gbps
(see Note 2)

Fab360: 480Gbps

Fab360: 720Gbps

Fab720: 960Gbps

Fab720: 1440Gbps

Number of
VLANs

Maximum MAC 14 K/per module, total 14 K x number of modules
address table size
See Note 3
Forwarding table 128 K/256 K
entries
Number of fabric 2
slots

Software Features

Table 23 Technical specifications of the Switch 8800 Family
Item

Switch 8807

Switch 8810

Switch 8814

fabric module
type

360 Gbps Fabric

360 Gbps Switch
Fabric

360 Gbps Switch Fabric
720 Gbps Switch Fabric

720 Gbps Switch
Fabric
Number of I/O
module slots

User interface

10/100/1000BASE-TX RJ45

1000BASE-X (SFP)
10BASE-X (XENPAK)
10BASE-X (XFP)
Operating
temperature

0 to 40C (32 to 104F)

Operating
humidity
(noncondensing)

10% to 90%

Storage
temperature

-10 to 70C (14 to 158F)

Storage humidity 10% to 90%

Note 1: The switching capacity in the above table is calculated based on two
load-sharing fabrics.
Note 2: The 7-slot has additional backplane traces per slot compared to the
14-slot and the 10- slot chassis. The additional traces enable higher capacity per
slot using the 360G Fabric compared to the 10-slot and 14-slot chassis.
Note 3: See the Switch 8800 Configuration Guide for rules and limitations.

Software Features

The software of the Switch 8800 Family uses fully distributed processing and runs
on 3Com network operating system Comware. The following table summaries the
supported software features.
Table 24 Software features of the Switch 8800 Family
Item

Description

VLAN

IEEE 802.1Q-compliant VLAN
Port-based, protocol-based (8 groups), IP subnet-based
VLAN division
GARP VLAN registration protocol (GVRP)
Super VLAN
Isolate user VLAN
Guest VLAN
Dynamic VLAN

STP

IEEE 802.1d/IEEE 802.1w/IEEE 802.1s-compliant
spanning tree protocol (STP)/rapid STP (RSTP)/multiple
STP (MSTP)

CHAPTER 1: PRODUCT OVERVIEW

Table 24 Software features of the Switch 8800 Family
Item

Description

Flow control

IEEE 802.3x flow control (full duplex)
Back pressure flow control (half duplex)

Broadcast/multicast suppression

Supported

Multicast

Internet group management protocol (IGMP) snooping
IGMP
Internet group management protocol (IGMP) v2
Protocol-independent multicast-dense mode (PIM-DM)
Protocol-independent multicast-sparse mode (PIM-SM)
Multicast source discovery protocol (MSDP)
Multiprotocol border gateway protocol (MBGP)
Any-RP

IP routing

Static routing
Routing information protocol (RIP) v1/v2
Open shortest path first (OSPF) v2
Border gateway protocol (BGP)
Intermediate system-to-intermediate system (IS-IS)
Equal cost route forwarding
Routing policy
Policy routing
OSPF/IS-IS/BGP graceful restart (GR)

Link aggregation

Aggregation across cards
LACP

DHCP

DHCP server
DHCP relay
DHCP Option 82

Mirroring

Port-based mirroring

Multiprotocol Label Switching (MPLS)

L3 MPLS VPN, inter-domain MPLS VPN, hierarchy of PE
(HoPE), CE dual homing, MCE, multi-role host
VLL: Martini, Kompella, and CCC mode
VPLS

QoS

Traffic classification based on port, MAC address,
VLAN, IP address, IP priority, TCP/UDP port number,
DSCP priority, Type of service (ToS) priority, class of
service (CoS) priority, etc.
Traffic monitoring, with granularity of 8 Kbps
Traffic shaping
Priority mark/remark
Queue scheduling: strict priority (SP), weighted round
Robin (WRR) and SP + WRR as prompted to display the system Password : prompt.

To enter the Boot menu, you must press within five seconds after the
appearance of the “Press Ctrl-B to enter Boot menu...” prompt. Otherwise, the
program decompression process begins. To access the Boot menu after the switch
enters the program decompression process, you need to restart the switch.
2 Enter the Boot ROM password (the switch’s default is no password). The Boot
menu displays as follows:

CAUTION: Make sure you have Boot ROM password.
MAIN MENU
1. Boot with default mode
2. Boot from Flash
3. Boot from HardDisk
4. Enter serial submenu
5. Enter ethernet submenu
6. Modify Flash description area
7. Modify bootrom password
0. Reboot
Enter your choice(0-7):

3 Ensure that the upgraded host program is compatible with the existing I/O
module’s Boot ROM program. Otherwise, you must upgrade it during a host
program upgrade.
4 When loading the host program through the Boot menu, configure the serial
interface’s attributes as shown in Figure 62. Otherwise, the Hyper Terminal does
not respond.

CHAPTER 6: SWITCH MONITORING AND MAINTENANCE

Figure 62 Hyper Terminal serial interface attribute settings

Upgrading software
through console port
(XModem)

XModem is a file transfer protocol used for its simplicity and performance. It
transmits files through serial interfaces, supporting 128 bytes and 1Kbytes in data
units, checksum and CRC checking modes, and multiple transmissions attempts
(usually 10 attempts) when packet errors are found.
XModem completes the transmission by the receiving program (receiver) and the
sending program (sender). In XModem, the transmission begins by sending
negotiation characters from the receiver for the purpose of check mode
negotiation. After passing the negotiation, the sender is allowed to send the first
data packet. Upon receiving the complete packet, the receiver checks the packet
using the agreed upon check mode and sends an ACK if the packet has passed
the check and a NAK if it did not. After receiving the ACK, the sender sends the
next packet; if it receives a NAK, the sender retransmits the previously sent packet.
To run the Xmodem application:
1 In the Boot menu, type 4, press Enter, and the system accesses the serial interface
submenu as follows:
SERIAL SUBMENU
1. Download file to SDRAM through serial interface and boot
2. Download file to Flash through serial interface
3. Download file to HardDisk through serial interface
4. Modify serial interface boot parameter
0. Return to main menu
Enter your choice(0-4):4

Upgrading the Software

2 Type 4 in the serial interface submenu and press Enter to set the serial interface
download parameters from the following menu:
1: 9600(default)
2: 19200
3: 38400
4: 57600
5: 115200
please select an appropriate baudrate:
Enter your choice(1-5): 5

3 Select the download speed as needed. For example, enter 5 to select the
download speed of 115200 bps, then press Enter. The system displays the
following information:
BaudRate is 115200 bps. Please change the terminal’s speed to 115200
bps

4 Change the baud rate on the Console terminal to match your specification,
disconnect the terminal, connect it again, then press Enter. The terminal displays
the serial interface submenu again:
SERIAL SUBMENU
1. Download file to SDRAM through serial interface and boot
2. Download file to Flash through serial interface
3. Download file to HardDisk through serial interface
4. Modify serial interface boot parameter
0. Return to main menu
Enter your choice(0-4):2

■

After changing the baud rate, you must close the terminal emulation program
and start it again at least once in order to validate the new baud rate.

■

In Windows 98, you can disconnect and reconnect the terminal after changing
the baud rate. In Windows 2000, you must disconnect the terminal before
setting the baud rate and reconnect the terminal after it is complete.

5 Choose where you wish to store the downloaded file. For example, enter 2 to
download the file into the switch’s Flash memory then, press Enter. The system
displays the following information as it is downloading the file:
Please Select File .
XMODEM downloading ...CCC

6 Select [Transfer/Send File] in the terminal window. The Send File dialog box
appears as shown in Figure 62.
7 Click Browse, and select the application, and change the protocol to XModem.

CHAPTER 6: SWITCH MONITORING AND MAINTENANCE

Figure 63 Send File dialog box

8 Click Send. The Xmodem dialog box displays.
9 After downloading the program successfully, the system begins to write the data
into the Flash memory. When the download is finished, the serial interface displays
the following submenu again.
XMODEM downloading ...CCC download successfully!
flash:/ s8500.app already exist,
delete it?(Y/N):y
Deleting file--------------------------------------------------------------------------------------------------------------------Done
Free flash Space : 15862784 bytes
Writing flash------------------------------------------------------------------------------------------------------------Done
SERIAL SUBMENU
1. Download file to SDRAM through serial interface and boot
2. Download file to Flash through serial interface
3. Download file to HardDisk through serial interface
4. Modify serial interface boot parameter
0. Return to main menu
Enter your choice(0-4):

Upgrading the Software
Using TFTP

Trivial File Transfer Protocol (TFTP) transmissions are initiated by the client. When
downloading a file, the client sends a read request packet to the TFTP server,
receives the data packets from the server, and sends the ACK to the server. When
uploading a file, the client sends a write request packet to the TFTP server, then
sends the data packets to the server, and receives the ACK from the server. The
TFTP transmission files have two forms; binary for program transmission and ASCII
for text transmission.
To upgrade the software using TFTP perform the following steps.

This procedure uses a Switch 8814 work as the TFTP client.
1 Connect the switch to a PC where the file is located using the
management/upgrade Ethernet port. (You need the IP address of the PC. At the
same time, connect the switch to an external PC (that can be the same one that
contains the file) using the console port.
2 Run the TFTP server program on the PC connected to the management/upgrade
Ethernet port and specify the path for upgrading the application files.
3 Run the terminal emulation program on the PC connected to the console port,
and boot the switch to access the Boot menu.

Upgrading the Software

4 Enter 5 at Boot menu prompt and press Enter. The system displays the download
application program menu:
ETHERNET SUBMENU
1. Download file to SDRAM through ethernet interface and boot
2. Download file to Flash through ethernet interface
3. Download file to HardDisk through ethernet interface
4. Modify ethernet interface boot parameter
0. Return to main menu
Be sure to select 4 to modify boot parameter before downloading!
Enter your choice(0-4): 4

5 Enter 4 to select TFTP for upgrading the software and press Enter to set the
related TFTP parameters:
Note: Two protocols for download, tftp & ftp.
You can modify the flags following the menu.
tftp--0x80, ftp--0x0.

The message prompts you to set the flags to 0x80 when you download files using
TFTP and to 0x0 if you are using FTP.
’.’ = clear field; ’-’ = go to previous field;
boot device
:fei0
processor number
:
host name
: 8500 ,
file name
: 8500.app
inet on ethernet (e) : 1.1.1.1
inet on backplane (b):
host inet (h)
: 1.1.1.2
gateway inet (g)
:
user (u)
:
ftp password (pw) (blank = use rsh):
flags (f)
:0x80
target name (tn)
:
startup script (s)
:
other (o)
:
Write flash...done!

^D = quit

6 After you provide the required information, the system accesses the Ethernet
interface submenu appears again:
ETHERNET SUBMENU
1. Download file to SDRAM through ethernet interface and boot
2. Download file to Flash through ethernet interface
3. Download file to HardDisk through ethernet interface
4. Modify ethernet interface boot parameter
0. Return to main menu
Enter your choice(0-4): 2

7 Specify where you wish to download the file (2 if you which to download the file
to Flash), press Enter. Upon successful completion, the system display the
following information:
Attached TCP/IP interface to fei0.
Attaching network interface lo0... done.
boot device
: fei0
unit number
: 0
processor number
: 0
host name
: 8500
file name
: 8500.app

CHAPTER 6: SWITCH MONITORING AND MAINTENANCE

inet on ethernet (e) : 1.1.1.1
host inet (h)
: 1.1.1.2
flags (f)
: 0x80
Prepare for loading....OK
Loading......done
flash:/s8500.app already exist,
delete it?(Y/N):y
Deleting file------------------------------------------------------------------------------------------------------Done
Free flash Space : 15862784 bytes
Writing Flash--------------------------------------------------------------------------------------------------------------------------------------------------------------------------Done

8 The system accesses the Ethernet interface submenu again as shown below.
ETHERNET SUBMENU
1. Download file to SDRAM through ethernet interface and boot
2. Download file to Flash through ethernet interface
3. Download file to HardDisk through ethernet interface
4. Modify ethernet interface boot parameter
0. Return to main menu
Enter your choice(0-4):

Upgrading software
Using (FTP)

The Switch 8800 Family applications can also be updated through the Ethernet
port using FTP.
This procedure uses a Switch 8814 work as the FTP client.
1 Connect the switch to the PC containing the file using the management/upgrade
Ethernet port. (You need the IP address of the PC.) Connect the switch to an
external PC (that can be the same one that contains the file) through the console
port.
2 Run the FTP server on the PC connected to the management/upgrade Ethernet
port. Specify the path to the upgrade file and set the login username and
password.
3 Run the terminal emulation program on the PC connected to the Console port,
and boot the Switch to access the Boot menu.
4 See the corresponding steps (4 through 8) in the upgrading procedure using TFTP
above.

If you want to download files using FTP, please set the flags to 0x0 when setting
the Ethernet interface parameters.
5 After downloading the host program through the Boot menu, you must specify it
as the next boot program. In the following example, the host program is Switch
8800 Family-Comware 310-R1212.app.
MAIN

MENU
1. Boot with default mode
2. Boot from Flash
3. Boot from CF card
4. Enter serial submenu
5. Enter ethernet submenu
6. Modify Flash description area
7. Modify bootrom password

Upgrading the Software

0. Reboot
Enter your choice(0-7):
Enter your choice(0-7): 6
Please input ’0’ or ’1’ (’0’:Boot from Flash, ’1’:Boot from CF card)
BootDev = 0
FlashFileName = Switch 8800 Family-Comware 310-R1212.app

Upgrading the Software
Using the CLI

If your terminal is connected to the switch over a network, you can load the Boot
ROM and host programs remotely through the CLI using FTP. or TFTP
Using FTP
1 Run the FTP server on a local PC, provided you have configured username and
password and have set the correct file directory. Specify the PC’s IP address (for
example, 10.10.110.1 in the example below).
2 Log on to the switch using Telnet or through the Console port to send host
program to the switch using FTP.
3 Using the Get command, download the main boot file (SWITCH002.app in the
example below), the active host program (SWITCH001.app in the example below),
and the Boot ROM program (SWITCHbtm.btm in the example below.
<3Com> 10.19.110.1
Trying ...
Press CTRL+K to abort
Connected.
220 WFTPD 2.0 service (by Texas Imperial Software) ready for new user
User(none):8500
331 Give me your password, please
Password:
230 Logged in successfully
[ftp] get SWITCH002.app SWITCH002.app
[ftp] get Switchbtm.btm Switchbtm.btm
[ftp] bye

If the switch has two fabrics, you also can copy the host and Boot ROM program
files to the standby Fabric.
4 Specify the next boot program. If the switch has two fabrics, specify the load
programs respectively for the active and standby fabrics (the current standby fabric
is in slot 7 in the example below).
a Load Boot ROM program
<3Com> boot bootrom flash:/Switchbtm.btm slot 6
<3Com> boot bootrom slot7#flash:/Switchbtm.btm slot 7

b Load host program
<3Com> boot boot-loader flash:/SWITCH002.app
<3Com>boot boot-loader slot7#flash:/SWITCH002.app

The URL form of the files in the standby fabric file system must start with
“slot[No.]#flash:/”, where [No.] is the standby fabric number.
<3Com> display boot-loader
The app to boot of board 6
The app to boot of board 6
The app to boot of board 7
The app to boot of board 7
<3Com> reboot

at
at
at
at

the next time
this time is:
the next time
this time is:

is: flash:/SWITCH002.app
flash:/SWITCH002.app
is: flash:/SWITCH002.app
flash:/SWITCH002.app

CHAPTER 6: SWITCH MONITORING AND MAINTENANCE

CAUTION:
■

You must reboot the switch using the reboot command to validate the host
program. If Flash memory space is not enough, you can delete some of the
program files in Flash after completing the Boot ROM loading. (3Com
recommends that you delete the host program that is no longer in use.) Then
upload the host program to the switch using FTP.

■

Make sure that you have saved other the configuration before rebooting.

■

Do not power the switch off during the loading process.

The Boot ROM and host program loading process is now complete.
Using TFTP
Using the CLI to upgrade using TFTP is similar to using FTP. The only difference is
that you use the tftp get command to download software to the switch. In this
case, the switch can only be used as a TFTP client to download the software to its
Flash memory from the TFTP server. Once the download is complete all remaining
steps are the same.
Upgrading the
Application Module
Program

If you have the 360G Fabric (3C17508), download the application software image
files to the compact flash (CF) and then boot from the CF.
If you have the 720G Fabric (3C17539), download the application software image
files directly to the Fabric’s onboard flash.

Troubleshooting the
Software Upgrade

This section describes the problems may occur during the software upgrade.
No response from the fabric serial interface
Make sure the serial interface cable is in good condition and that its attributes are
set correctly.
Uploading the configuration file or host program using FTP fails
Check that the:
■

Configuration is correct and that the FTP server is started.

■

Flash has enough space for the target files.

■

TFTP flag is selected (TFTP is not supported).

The configuration did not save during the I/O module reboot
Before saving the configuration, you must check the operating status of the I/O
module. Do not save the configuration during the I/O module reboot. Otherwise,
the configuration you want to save may be lost.
I/O module program loading fails or you cannot register for a long period
■

Check that the I/O module type is supported on the current host program.

■

Check that the I/O module Boot ROM program matches the host program.

■

Check that the I/O modules are well seated.

■

Insert an I/O module to other slots to make sure it is not defective.

Password Loss

■

Check that the host program exists and that the current host program is
running.

Insufficient Flash memory

Password Loss

■

Empty the recycle bin when the I/O module starts.

■

Delete the unused files in the Flash.

If the switch’s Super password or Boot ROM password, contact your local support
representative.

CHAPTER 6: SWITCH MONITORING AND MAINTENANCE

LIGHTNING PROTECTION OF THE
SWITCH

A
Installing a Lightning
Arrester for the AC
Power

This appendix describes how to install the lightning arrester for the AC power (a
socket strip with lightning protection)
CAUTION: A lightning arrester is not shipped with the switch. You must purchase
it separately, if needed.
Make sure, when connecting an outdoor AC power cord directly to the switch,
that you connect a lightning arrester to the AC power (a socket strip with
lightning protection) before you plug the AC power cord into the switch. This
helps to prevent damage in the event of a lightning strike. Install your lightening
arrester according to its manufacturer’s instructions.
Figure 64 A Lightning Arrester
Grounding and polarity indicator (red) :
On means that the lines are incorrectly connected
(either the ground wire is not well connected, or the live and zero lines are incorrectly connected).
Check the power supply circuit.
Power switch
Normal operation indicator (green):
On means that the arrester is working. Otherwise, it
means that the protection circuit has been damaged.
Power socket (compliant with the IEC standard),
connected to the equipment room’s power supply
through power cord
Mainboard

Multipurpose power socket connected to the device
protected by the arrester

Overload auto protector,
which can be manually reset.

CAUTION:
■

Make sure that the arrester is well grounded before using the lightning arrester
for power.

■

After inserting the switch’s AC power cord plug into the lightening arrester’s
socket, if the green LED is on and the red LED does not alarm, it means that the
lightning arrester’s power is running and the lightning protection function is
active.

■

Make sure that the red LED is on. If there is a problem, determine if the
arrester’s ground wire is well grounded and the live and zero wires are

CHAPTER A: LIGHTNING PROTECTION OF THE SWITCH

connected in right direction. When the red LED is on, use a multimeter to
examine the polarity at the arrester’s power socket. If it is same as that of the
power socket in the equipment room, it means that the arrester is not well
grounded. If it is adverse to that of the power socket in the equipment room, it
means that the arrester’s power socket is set to the reverse polarity. In this case,
you should open the arrester’s power socket and correct the polarity. After
that, if the red LED still alarms, it means that the arrester is still not well
grounded.

Installing a Lightning
Arrester for the
Network Port

A network port lightning arrester is specifically designed for an 10/100M electrical
interface (an RJ-45 connector in this case) Ethernet port.
Make sure, when connecting an outdoor AC power cord directly to the switch,
that you connect a lightning arrester to the AC power (a socket strip with
lightning protection) before you plug the AC power cord into the switch. This
helps to prevent damage in the event of a lightning strike. Install your lightening
arrester according to its manufacturer’s instructions.
Required tools
■

Phillips screwdriver or flat-module screwdriver

■

Multimeter

■

Tilted wire cutter

Installation procedure
1 Remove the protection paper from one side of the double-faced adhesive tape,
and stick the tape to the surface of the arrester. Remove the protection paper from
the other side, and stick the arrester onto the switch’s chassis as close to the
grounding screw as possible.
2 Cut the arrester’s ground wire to the length of the distance between the arrester
and the switch’s grounding screw so that you can securely tighten the ground wire
to the switch’s grounding screw.
3 Use the multimeter determine if the arrester’s ground wire connects properly
chassis’s grounding screw.
4 According to the instructions provided with your network port arrester, connect
the arrester to switch using the cables (Make sure to insert the outdoor network
cable into the arrester‘s IN end, and the cable that is connected to the switch into
the arrester’s OUT end). Check that the arrester’s indicators display correctly.
5 Use the nylon ties to bundle the cables neatly.

Installing a Lightning Arrester for the Network Port

Figure 65 Installation diagram of a network port’s lightning arrester

Network cable indoors
Network cable from outdoors

Switch

Lightning arrester for the network port
(attached onto the chassis)
Lightning arrester ground wire

Power input
Switch grounding screw
Metal cabinet that contains the switch

Installation precautions
To ensure that the network port’s lightning arrester does not affect performance,
make sure that the lightning arrester for network port is:
■

Connected properly (see Step 4 in the previous section).

■

Well grounded. The ground wire for the arrester should be as short as possible.
Ensure that it is has proper contact with the switch’s grounding screw using the
multimeter.

■

Installed completely. If the switch has more than one network ports to
interconnect with other devices using outdoor cables, you should install
lightning arresters for all network ports for protection.

100

CHAPTER A: LIGHTNING PROTECTION OF THE SWITCH

3COM NETWORK MANAGEMENT

3Com has a range of network management applications to address
networks of all sizes and complexity, from small and medium businesses
through large enterprises. The applications include:
■

3Com Network Supervisor

■

3Com Network Director

■

3Com Network Access Manager

■

3Com Enterprise Management Suite

■

Integration Kit with HP OpenView Network Node Manager

Details of these and other 3Com Network Management Solutions can be
found at www.3com.com/network_management

3Com Network
Supervisor

3Com® Network Supervisor (3NS) is an easy-to-use management
application that graphically discovers, maps, and monitors the network
and links. It maps devices and connections so you can easily:
■

Monitor stress levels

■

Set thresholds and alerts

■

View network events

■

Generate reports in user-defined formats

■

Launch embedded device configuration tools

3NS is configured with intelligent defaults and the ability to detect
network misconfigurations. It can also offer optimization suggestions,
making this application ideal for network managers with all levels of
experience.
To find out more about 3Com Network Supervisor and to download a
trial version, go to: www.3com.com/3ns

102

APPENDIX B: 3COM NETWORK MANAGEMENT

3Com Network
Director

3Com Network Director (3ND) is a standalone application that allows you
to carry out key management and administrative tasks on midsized
networks. By using 3ND you can discover, map, and monitor all your
3Com devices on the network. It simplifies tasks such as backup and
restore for 3Com device configurations as well as firmware and agent
upgrades. 3ND makes it easy to roll out network-wide configuration
changes with its intelligent VLAN configuration tools and the powerful
template based configuration tools. Detailed statistical monitoring and
historical reporting give you visibility into how your network is
performing.
To find out more about how 3Com Network Director can help you
manage your 3Com network and to download a trial version, go to:
www.3com.com/3nd

3Com Network
Access Manager

3Com Network Access Manager is installed seamlessly into Microsoft
Active Directory and Internet Authentication Service (IAS). It simplifies the
task of securing the network perimeter by allowing the administrator to
easily control network access directly from the “Users and Computers”
console in Microsoft Active Directory. With a single click, a user (or even
an entire department) can be moved to a different VLAN, or a computer
can be blocked from connecting to the network.
3Com Network Access Manager leverages the advanced desktop security
capabilities of 3Com switches and wireless access points (using IEEE
802.1X or RADA desktop authentication) to control both user and
computer access to the network.
To find out more about 3Com Network Access Manager, go to:
www.3com.com/NAM

3Com Enterprise Management Suite

3Com Enterprise
Management Suite

103

3Com Enterprise Management Suite (EMS) delivers comprehensive
management that is flexible and scalable enough to meet the needs of
the largest enterprises and advanced networks.
This solution provides particularly powerful configuration and change
control functionalities, including the capability to:
■

Customize scheduled bulk operations

■

Create a detailed audit trail of all network changes

■

Support multiple distributed IT users with varying access levels and
individualized network resource control

The client-server offering operates on Windows and UNIX (Linux and
Solaris) systems.
3Com EMS is available in four packages, varying in the maximum number
of devices actively managed. These include SNMP-capable devices such as
switches, routers, security switches, the 3Com VCX™ IP Telephony server,
and wireless access points:
■

Up to 250 devices

■

Up to 1,000 devices

■

Up to 5,000 devices

■

An unlimited number of devices

To find out more about 3Com Enterprise Management Suite, go to:
www.3com.com/ems

Integration Kit with
HP OpenView
Network Node
Manager

3Com Integration Kit for HP OpenView Network Node Manager offers
businesses the option of managing their 3Com network directly from HP
OpenView Network Node Manager. The kit includes Object IDs, icons,
MIBs, and traps for 3Com devices. The package supports both Windows
platforms and UNIX or Solaris platforms. It can be installed as a
standalone plug-in to HP OpenView, or used with a 3Com management
application such as 3Com Enterprise Management Suite (EMS).
To find out more about 3Com Integration Kit for HP OpenView Network
Node Manager, go to: www.3com.com/hpovintkit

104

APPENDIX B: 3COM NETWORK MANAGEMENT

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