HP J4902A User manual

hp procurve
switch 6108
installation and
getting started guide
www.hp.com/go/hpprocurve

HP Procurve Switch 6108
Installation and Getting Started Guide

Hewlett-Packard Company
8000 Foothills Boulevard, m/s 5552
Roseville, California 95747-5552
http://www.hp.com/go/hpprocurve
© Copyright 2002 Hewlett-Packard Company
All Rights Reserved.
This document contains information which is protected by
copyright. Reproduction, adaptation, or translation without
prior permission is prohibited, except as allowed under the
copyright laws.
Publication Number
J4902-90001
October 2002
Applicable Products
HP Procurve Switch 6108 (J4902A)
Disclaimer
The information contained in this document is subject to
change without notice.
HEWLETT-PACKARD COMPANY MAKES NO WARRANTY
OF ANY KIND WITH REGARD TO THIS MATERIAL,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not
be liable for errors contained herein or for incidental or
consequential damages in connection with the furnishing,
performance, or use of this material.
Hewlett-Packard assumes no responsibility for the use or
reliability of its software on equipment that is not furnished
by Hewlett-Packard.
Warranty
See the Customer Support/Warranty booklet included with
the product.
A copy of the specific warranty terms applicable to your
Hewlett-Packard products and replacement parts can be
obtained from your HP Sales and Service Office or
authorized dealer.
Safety
Before installing and operating these products, please read
the “Installation Precautions” in chapter 2, “Installing the
Switch 6108”, and the safety statements in appendix C,
“Safety and Regulatory Statements”.

i
Contents
1 Introducing the HP Procurve Switch 6108
Front of the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Network Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Mode LED View Button and Indicator LEDs . . . . . . . . . . . . . . . . . . . . . 1-5
Console Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Clear Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Back of the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Switch Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
2 Installing the Switch 6108
Included Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Installation Precautions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
1. Prepare the Installation Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2. Installing or Removing mini-GBICs . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
3. Verify the Switch Passes Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
LED Behavior: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
4. Mount the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Rack or Cabinet Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Horizontal Surface Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
5. Connect the Switch to a Power Source . . . . . . . . . . . . . . . . . . . . . . 2-14
6. Connect the Network Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Using the RJ-45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Connecting Cables to mini-GBICs . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

ii
7. (Optional) Connect a Console to the Switch 6108 . . . . . . . . . . . . . 2-16
Terminal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Direct Console Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Sample Network Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
As a Desktop Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
As a Segment Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Connecting to a Backbone Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
Stacking the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
3 Getting Started With Switch Configuration
Recommended Minimal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Using the Console Setup Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Where to Go From Here . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Using the IP Address for Remote Switch Management . . . . . . . . . . . 3-5
Starting a Telnet Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Starting a Web Browser Session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
4 Troubleshooting
Basic Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Diagnosing with the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Proactive Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Hardware Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Testing the Switch by Resetting It . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Checking the Switch LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Checking Console Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Testing Twisted-Pair Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Testing Switch-to-Device Network Communications . . . . . . . . . . . . 4-10
Testing End-to-End Network Communications . . . . . . . . . . . . . . . . . 4-10
Restoring the Factory Default Configuration . . . . . . . . . . . . . . . . . . 4-11
Downloading New Switch Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
HP Customer Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Before Calling Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

iii
A Specifications
Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Acoustic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Lasers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
B Switch Ports and Network Cables
Switch Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Twisted-Pair Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Mode Conditioning Patch Cord for Gigabit-LX . . . . . . . . . . . . . . . . . B-3
Installing the Patch Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Recommended Patch Cords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Twisted-Pair Cable/Connector Pin-Outs . . . . . . . . . . . . . . . . . . . . . . . B-5
Straight-Through Twisted-Pair Cable for
10 Mbps or 100 Mbps Network Connections . . . . . . . . . . . . . . . . . . . . B-7
Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7
Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7
Crossover Twisted-Pair Cable for
10 Mbps or 100 Mbps Network Connection . . . . . . . . . . . . . . . . . . . . . B-8
Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8
Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8
Straight-Through Twisted-Pair Cable for
1000 Mbps Network Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9
Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9
Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9
C Safety and EMC Regulatory Statements
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
EMC Regulatory Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index-1

1-1
Introducing the HP Procurve
Switch 6108
1
Introducing the HP Procurve Switch 6108
The HP Procurve Switch 6108 is a multiport switch that can be used to build
high-performance switched workgroup networks. This switch is a store-and-
forward device that offers low latency for high-speed networking.
Throughout this manual, this switch will be abbreviated as the Switch 6108.
The Switch 6108 has six auto-sensing 10/100/1000Base-T RJ-45 ports and two
dual-personality ports—either auto-sensing 10/100/1000Base-T RJ-45 or mini-
GBIC.
This switch is designed to be used primarily to provide Gigabit/second
network speed to the desktop. You can also directly connect servers and
peripherals to this switch and connect the switch to a network backbone or
to other switches, hubs, or routers. In addition, the Switch 6108 offers full
network management capabilities.
This chapter describes your HP Switch 6108 including:
■Front and back of the switch
■Switch features
HP Procurve Switch 6108 (HPJ4902A)

1-2
Introducing the HP Procurve Switch 6108
Front of the Switch
Introducing the HP Procurve
Switch 6108
Front of the Switch
Network Ports
■Six auto-sensing 10/100/1000Base-T RJ-45 ports.
All these ports have the IEEE 802.3ab “Auto MDI/MDI-X” feature, which
means that you can use either straight-through or crossover twisted-
pair cables to connect any network devices to the switch.
■Two dual-personality ports. You can use either the 10/100/1000Base-T
RJ-45 connector, or install a supported HP Procurve mini-GBIC for fiber-
optic connections.
The RJ-45 connectors support the IEEE Auto MDI/MDI-X feature.
Dual-Personality Port Operation. By default, the RJ-45 connnectors are
enabled. If a mini-GBIC is installed in a slot, it is enabled and the associated
RJ-45 connector is disabled and cannot be used. If the mini-GBIC is removed,
the associated RJ-45 port is automatically re-enabled.
Reset and Clear
buttons
Mode LED View button
and indicator LEDs
Link and Mode LEDs
for switch ports
Self Test and
Fan Status
LEDs
Power
and Fault
LEDs HP Procurve Switch 6108
10/100/1000Base-T RJ-45 ports*
* All 10/100/1000Base-T RJ-45 ports have the
IEEE 802.3ab “Auto MDI/MDIX” feature.
Console
port
Dual-personality ports
(1000Base-T* or mini-GBIC)

1-3
Introducing the HP Procurve Switch 6108
Front of the Switch
Introducing the HP Procurve
Switch 6108
LEDs
Table 1-1. Switch LEDs
Switch LEDs State Meaning
Power
(green)
On Green The switch is receiving power.
Off The switch is NOT receiving power.
Fault
(orange)
Off The normal state; indicates that there are no fault conditions on the switch.
On On briefly after the switch is powered on or reset, at the beginning of switch self test.
If this LED is on for a prolonged time, the switch has encountered a fatal hardware
failure, or has failed its self test. See chapter 4, “Troubleshooting” for more information.
Self Test
(green)
Off The normal operational state; the switch is not undergoing self test.
On The switch self test and initialization are in progress after you have power cycled or
reset the switch. The switch is not operational until this LED goes off. The Self Test LED
also comes on briefly when you “hot swap” a mini-GBIC into the switch; the mini-GBIC
is self tested when it is hot swapped.
Blinking* A component of the switch has failed its self test. The status LED for that component,
for example an RJ-45 port, and the switch Fault LED will blink simultaneously.
Link
(green – over-
laid with the
port number)
On Indicates the port is enabled and receiving a link indication from the connected device.
Off One of these conditions exists:
• no active network cable is connected to the port
• the port is not receiving link beat or sufficient light
• the port has been disabled through the switch console, the web browser interface,
or HP TopTools.
Blinking* If the LED is blinking simultaneously with the Fault LED, the corresponding port has
failed its self test.
Mode
(Green)
Displays network activity information, or whether the port is configured for full-duplex operation, or
the speed of the connection depending on the mode selected. See “Mode LED View Button and
Indicator LEDs” on the next page for more information.
Mode LED
View
(3 green LEDs)
Act Indicates that the port Mode LEDs are displaying network activity information.
FDx Indicates that the port Mode LEDs are lit for ports that are in Full Duplex Mode.
Spd Indicates that the port Mode LEDs are displaying the connection speed at which each
port is operating:
• if the port LED is off, the port is operating at 10 Mbps.
• if the port LED is flashing**, the port is operating at 100 Mbps.
• if the port LED is on continuously, the port is operating at 1000 Mbps.
** The flashing behavior is an on/off cycle once every 0.5 seconds, approximately.

1-4
Introducing the HP Procurve Switch 6108
Front of the Switch
Introducing the HP Procurve
Switch 6108
T/M
(green – ports
7 and 8 only)
On For the dual-personality ports, indicates the enabled port:
• if the “T” is on, the 10/100/1000Base-T RJ-45 port is enabled.
• if the “M” is on, the mini-GBIC port is enabled.
Fan Status
(green)
On The cooling fan is operating normally.
Blinking* The cooling fan has failed. The switch Fault LED will be blinking simultaneously.
* The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.
Switch LEDs State Meaning

1-5
Introducing the HP Procurve Switch 6108
Front of the Switch
Introducing the HP Procurve
Switch 6108
Mode LED View Button and Indicator LEDs
To optimize the amount of information that can be displayed for each of the
switch ports without overwhelming you with LEDs, the Switch 6108 uses a
Mode LED for each port. The operation of this LED is controlled by the Mode
LED View button, and the current setting is indicated by the Mode LED View
indicator LEDs near the button. Press the button to step from one mode to the
next.
■If the Activity (Act) indicator LED is lit, each Mode LED displays activity
information for the associated port—it flickers as network traffic is
received and transmitted through the port.
■If the Full Duplex (FDx) indicator LED is lit, the Mode LEDs light for those
ports that are operating in full duplex.
■If the Speed (Spd) indicator LED is lit, the Mode LEDs behave as follows
to indicate the connection speed for the port:
• Off = 10 Mbps
• Flashing = 100 Mbps (the flashing behavior is an on/off cycle once
every 0.5 seconds, approximately)
• On = 1000 Mbps
12
Spd
FDx
Act
12
Mode LED View
Spd mode:
off = 10 Mbps
flash = 100 Mbps
on = 1000 Mbps
Link
Mode
Mode LED View button
and indicator LEDs Mode LED
(one per port)

1-6
Introducing the HP Procurve Switch 6108
Front of the Switch
Introducing the HP Procurve
Switch 6108
Console Port
This port is used to connect a console to the Switch 6108 by using the serial
cable supplied with the switch. This connection is described under “Connect
a Console to the Switch” in chapter 2, “Installing the Switch”. The console can
be a PC or workstation running a VT-100 terminal emulator, or a VT-100
terminal.
Reset Button
This button is used to reset the switch while it is powered on. This action clears
any temporary error conditions that may have occurred and executes the
switch self test.
Clear Button
This button is used for these purposes:
■Deleting Passwords - When pressed by itself for at least one second, the
button deletes any switch console access passwords that you may have
configured. Use this feature if you have misplaced the password and need
console access.
This button is provided for your convenience, but its presence means
that if you are concerned with the security of the switch configuration
and operation, you should make sure the switch is installed in a secure
location, such as a locked wiring closet.
■Restoring Factory Default Configuration - When pressed with the
Reset button in a specific pattern, any configuration changes you may
have made through the switch console, the web browser interface, and
SNMP management are removed, and the factory default configuration is
restored to the switch. For the specific method to restore the factory
default configuration, see “Restoring the Factory Default Configuration”
in chapter 4, “Troubleshooting” of this manual.

1-7
Introducing the HP Procurve Switch 6108
Back of the Switch
Introducing the HP Procurve
Switch 6108
Back of the Switch
Power Connector
The Switch 6108 does not have a power switch; it is powered on when
connected to an active AC power source. The switch automatically adjusts to
any voltage between 100--240 volts and either 50 or 60 Hz. There are no voltage
range settings required.
AC power connector
Cooling vent - make sure this is not
obstructed for proper switch operation

1-8
Introducing the HP Procurve Switch 6108
Switch Features
Introducing the HP Procurve
Switch 6108
Switch Features
The features of the Switch 6108 include:
■six auto-sensing 10/100/1000Base-T RJ-45 ports.
■two dual-personality ports—either the auto sensing 10/100/1000Base-T
RJ-45 or the mini-GBIC can be used for each port.
■plug-and-play networking—all ports are enabled—just connect the
network cables to active network devices and your switched network is
operational.
■IEEE 802.3ab “Auto MDI/MDI-X” on all twisted-pair ports, meaning that
all connections can be made using straight-through twisted-pair
cables. Cross-over cables are not required, although they will also work.
Complying with the IEEE 802.3ab standard, the pin operation of each port
is automatically adjusted for the attached device: if the switch detects that
another switch or hub is connected to the port, it configures the port as
MDI; if the switch detects that an end-node device is connected to the
port, it configures the port as MDI-X.
■automatic learning of the network addresses in each switch’s 8000-
address forwarding table, (with configurable address aging value).
■automatically negotiated full-duplex operation for the 10/100/1000 RJ-45
ports when connected to other auto-negotiating devices—the mini-GBIC
ports always operate at full duplex.
■easy management of the switches through several available interfaces:
•console interface—a full featured, easy to use, VT-100 terminal
interface that is especially good for out-of-band switch management
or for Telnet access to the switch.
•web browser interface—an easy to use built-in graphical interface
that can be accessed from common web browsers.
•HP TopTools for Hubs & Switches—an SNMP-based, graphical
network management tool that you can use to manage your entire
network. This product is included with your new switch.
■support for the Spanning Tree Protocol to eliminate network loops
■support for up to 30 IEEE 802.1Q-compliant VLANs so you can divide the
attached end nodes into logical groupings that fit your business needs.
■support for many advanced features to enhance network performance—
for a description, see the Management and Configuration Guide, which
is on the Documentation CD-ROM that is included with your switch.
■download of new switch software for product enhancements or bug fixes.

2-1
Installing the Switch 6108
2
Installing the Switch 6108
The HP Switch 6108 is easy to install. It comes with an accessory kit that
includes the brackets for mounting the switch in a standard 19-inch telco rack,
in an equipment cabinet, oron a wall, and with rubber feetthat can beattached
so the switch can be securely located on a horizontal surface. The brackets
are designed to allow mounting the switch in a variety of locations and
orientations.
This chapter shows you how to install your Switch 6108.
Included Parts
The Switch 6108 has the following components shipped with it:
■HP Procurve Switch 6108 Installation and Getting Started Guide
(J4902-90001), this manual
■HP Procurve Product Documentation CD ROM
(contains PDF file copies of the documentation for the Switch 6108,
including the Management and Configuration Guide, and for most other
HP Procurve switches)
■HP TopTools for Hubs & Switches - CD ROM and booklet
■Console cable
■Customer Support/Warranty booklet
■Accessory kit (5064-2085)
• two mounting brackets
• four 8-mm M4 screws to attach the mounting brackets to the switch
• four 5/8-inch number 12-24 screws to attach the switch to a rack
• four rubber feet
■Power cord, one of the following:
Australia/New Zealand
China
Continental Europe
Denmark
Japan
Switzerland
United Kingdom/Hong Kong/Singapore
United States/Canada/Mexico
8120-6803
8120-8377
8120-6802
8120-6806
8120-6804
8120-6807
8120-8709
8120-6805

2-2
Installing the Switch 6108
Installation Procedures
Installing the Switch 6108
Installation Procedures
Summary
Follow these easy steps to install your switch. The rest of this chapter provides
details on these steps.
1. Prepare the installation site (page 2-4). Make sure that the physical
environment into which you will be installing the switch is properly
prepared, including having the correct network cabling ready to connect
to the switch and having an appropriate location for the switch. Please see
page 2-3 for some installation precautions.
2. Install mini-GBICs (optional—page 2-5). The switch has two slots
for installing mini-GBICs. Depending on where you will install the switch,
it may be easier to install the mini-GBICs first. Note that the mini-GBICs
can be hot swapped—they can be installed or removed while the switch
is powered on.
3. Verify that the switch passes self test (page 2-7). This is a simple
process of plugging the switch into a power source and observing that the
LEDs on the switch’s front panel indicate correct switch operation.
4. Mount the switch (page 2-9). The Switch 6108 can be mounted in a
19-inch telco rack, in an equipment cabinet, on a wall, or on a horizontal
surface.
5. Connect power to the switch (page 2-14). Once the switch is
mounted, plug it in to the nearby main power source.
6. Connect the network devices (page 2-15). Using the appropriate
network cables, connect the network devices to the switch ports.
7. Connect a console to the switch (page 2-16). You may wish to modify
the switch’s configuration, for example, to configure an IP address so it
can be managed using a web browser, from an SNMP network manage-
ment station, or through a Telnet session. Configuration changes can be
made easily by using the included console cable to connect a PC to the
switch’s console port.
At this point, your switch is fully installed. See the rest of this chapter if you
need more detailed information on any of these installation steps.

2-3
Installing the Switch 6108
Installation Procedures
Installing the Switch 6108
Installation Precautions:
Follow these precautions when installing your HP Switch 6108.
Warning ■The rack or cabinet should be adequately secured to prevent it from
becoming unstable and/or falling over.
Devices installed in a rack or cabinet should be mounted as low as
possible, with the heaviest devices at the bottom and progressively lighter
devices installed above.
■For safe operation, do not install the switch with the back face of the
switch (with the fan vents) facing either downward or upward.
Cautions ■Make sure that the power source circuits are properly grounded, then use
the power cord supplied with the switch to connect it to the power source.
■If your installation requires a different power cord than the one supplied
with the switch, be sure to use a power cord displaying the mark of the
safety agency that defines the regulations for power cords in your country.
The mark is your assurance that the power cord can be used safely with
the switch.
■When installing the switch, note that the AC outlet should be near the
switch and should be easily accessible in case the switch must be powered
off.
■Ensure that the switch does not overload the power circuits, wiring, and
over-current protection. To determine the possibility of overloading the
supply circuits, add together the ampere ratings of all devices installed on
the same circuit as the switch and compare the total with the rating limit
for the circuit. The maximum ampere ratings are usually printed on the
devices near the AC power connectors.
■Do not install the switch in an environment where the operating ambient
temperature might exceed 55°C (131°F).
■Make sure the air flow around the sides and back of the switch is not
restricted.

2-4
Installing the Switch 6108
Installation Procedures
Installing the Switch 6108
1. Prepare the Installation Site
■Cabling Infrastructure - Ensure that the cabling infrastructure meets
the necessary network specifications. See the following table for cable
types and lengths, and see appendix B, “Cables and Connectors” for more
information:
Table 2-1. Summary of Cable Types to Use With the Switch
Port Type Cable Type Length Limits
Twisted-Pair Cables
10/100/1000Base-T • 10 Mbps operation:
Category 3, 4, or 5, 100-ohm differential
unshielded twisted-pair (UTP) or shielded
twisted-pair (STP)
• 100 Mbps operation:
Category 5, 100-ohm differential UTP or STP
• 1000 Mbps operation:
Category 5E or better, 100-ohm differential
UTP or STP
Note: For 1000 Mbps operation, all four wire
pairs are used for data transmission.
100 meters
Note: Since the 10Base-T operation is through
10/100/1000Base-T ports, if you ever want to
upgrade the ports to 100Base-TX, it would be
best to cable the ports initially with category 5
cable. For 1000Base-T, category 5E, or better,
cable should be used.
The 10/100/1000-Base-T ports on the
Switch 6108 include the IEEE 802.3ab “Auto
MDI/MDI-X” feature. This feature allows you
to use either straight-through or crossover
twisted-pair cables for connecting to any
network devices including end nodes, such as
computers, or to other switches, hubs, and
routers.
Fiber Optic Cables
Gigabit-SX
(on Gigabit-SX-LC
mini-GBIC)
62.5/125 µm or 50/125 µm core/cladding
diameter, graded-index, multimode fiber-optic
cables that are fitted with LC connectors
•62.5µm cable:
– 160 MHz*km = 220 meters
– 200 MHz*km = 275 meters
•50µm cable:
– 400 MHz*km = 500 meters
– 500 MHz*km = 550 meters
Gigabit-LX
(on Gigabit-LX-LC
mini-GBIC)
Single-mode cables fitted with LC connectors.
62.5/125 µm or 50/125 µm core/cladding
diameter, graded-index, multimode fiber-optic
cables may also be used, but a mode
conditioning patch cord may be needed — see
“Mode Conditioning Patch Cord for Gigabit-LX”
on page B-3 for more information.
• single-mode cable = 5 kilometers
• multimode cable = 550 meters
Gigabit-LH
(on Gigabit-LH-LC
mini-GBIC)
Single-mode cables fitted with LC connectors. • single-mode cable = 70 kilometers