HP J4093A, J4120A Installation Manual

HP ProCurve Switches and Hubs

HP ProCurve Switch 1600M and 2424M
Installation Guide

Less Work, More Network

http://www.hp.com/go/procurve

HP ProCurve
Switch 1600M and 2424M

Installation Guide

© Copyright 1998 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

5967-9953
December 1998

Applicable Products

HP ProCurve Switch 1600M (HP J4120A)
HP ProCurve Switch 2424M (HP J4093A)

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 1600M and 2424M”, and the safety statements in
appendix C, “Safety and Regulatory Statements”.

Hewlett-Packard Company
8000 Foothills Boulevard, m/s 5552
Roseville, California 95747-5552
http://www.hp.com/go/procurve

Contents

1 Introducing the HP ProCurve Switch 1600M and 2424M

Front of the Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Network Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Mode Select Button and Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Console Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Clear Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Back of the Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Slot for Switch Module (Switch 2424M) . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Switch Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Switch Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Address Table Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

Simultaneous Network Communications . . . . . . . . . . . . . . . . . . . . . . . 1-9

Effect of VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

2 Installing the Switch 1600M and 2424M

Included Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Installation Precautions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

1. Prepare the Installation Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2. Install Switch Module (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

3. Verify the Switch Passes Self Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

LED Behavior: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

4. Mount the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Rack or Cabinet Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Horizontal Surface Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

iii

5. Connect the Switch to a Power Source . . . . . . . . . . . . . . . . . . . . . . 2-13

6. Connect the Network Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

Using the RJ-45 Connectors (10/100Base-TX ports) . . . . . . . . . . 2-14

Connecting Cables to the Switch Module . . . . . . . . . . . . . . . . . . . 2-14

7. (Optional) Connect a Console to the Switch . . . . . . . . . . . . . . . . . . 2-15

Terminal Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Direct Console Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Telnet Console Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Sample Network Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

As a Desktop Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

As a Segment Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

Connecting to a Backbone Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19

Hot Swapping the Switch Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Adding or Replacing the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Changing the Module Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

Where to Go From Here . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

3 Troubleshooting

Basic Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Diagnosing with the LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Proactive Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Hardware Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Testing the Switch by Resetting It . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Checking the Switch LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Checking Console Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Testing Twisted-Pair Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Testing Switch-to-Device Network Communications . . . . . . . . . . . . . 3-9

Testing End-to-End Network Communications . . . . . . . . . . . . . . . . . 3-10

Restoring the Factory Default Configuration . . . . . . . . . . . . . . . . . . 3-10

HP Customer Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Before Calling Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

iv

A Specifications

Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Acoustic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

B Connectors and Cables

Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Twisted Pair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Fiber-Optic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Twisted-Pair Cable/Connector Pin-Outs . . . . . . . . . . . . . . . . . . . . . . . B-3

Twisted-Pair Cable for Switch (MDI-X) to Computer (MDI)

10 Mbps or 100 Mbps Network Connection . . . . . . . . . . . . . . . . . . . . B-4

Twisted-Pair Cable for Switch (MDI-X) to Hub or Switch (MDI-X)

10 Mbps or 100 Mbps Network Connection . . . . . . . . . . . . . . . . . . . . B-5

Twisted-Pair Cable Pin Assignments

for 10 Mbps or 100 Mbps Operation . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

Twisted-Pair Straight-Through Cable . . . . . . . . . . . . . . . . . . . . . . B-6

Twisted-Pair Cross-Over Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

C Safety and EMC Regulatory Statements

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

EMC Regulatory Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-8

Index

v

Introducing the HP ProCurve Switch 1600M
and 2424M

The HP ProCurve Switch 1600M and 2424M are multiport switches that can
be used to build high-performance switched workgroup networks. These
switches are store-and-forward devices that offer low latency for high-speed
networking.

HP ProCurve Switch 1600M

(HP J4120A)

1

Introducing the HP ProCurve

Switch 1600M and 2424M

HP ProCurve Switch 2424M

(HP J4093A)

Throughout this manual, these switches will be abbreviated as the Switch
1600M and Switch 2424M, or when common features are being described, as
the Switch 1600M and 2424M.

The Switch 1600M and 2424M have 16 and 24 autosensing 10/100Base-T ports
respectively. Both switches have a module slot for installing any of the
supported switch modules. The modules provide expanded network connec­tivity, and media and network speed flexibility. For the Switch 2424M, the HP
ProCurve Gigabit Stacking Module can be installed allowing up to seven
switches to be stacked and interconnected with a high speed backbone.

With these switches you can build a switched network infrastructure by
connecting them to hubs, other switches, or routers, or you can directly
connect computers, printers, and servers to provide dedicated bandwidth to
those devices.

This chapter describes your HP Switch 1600M and 2424M including:

■ Front and back of the switch

■ Features

■ Switch operation overview

1-1

Introducing the HP ProCurve Switch 1600M and 2424M

Front of the Switches

Front of the Switches

Introducing the HP ProCurve

Switch 1600M and 2424M

Reset and Clear

Power

and Fault

LEDs

Console

buttons

port

Self Test

Console

port

Link and Mode LEDs

for Switch 2424M

10/100Base-TX ports

LED

Mode Select button

and indicator LEDs

Slot for
Switch Module
(Switch 1600M)

Status LEDs for
switch module,

Mode Select button

and indicator LEDs

and fan

HP ProCurve Switch 1600M

10/100Base-TX RJ-45 ports

with Link and Mode LEDs at each port

HP ProCurve Switch 2424M

Self Test and

Module Status

LEDs

Reset and Clear

buttons

Network Ports

■ 16 or 24 autosensing 10/100Base-TX ports

■ one universal switch module slot for installing any of the supported switch

modules (see “Features” on page 1-7). On the Switch 1600M, the slot is in
the front; on the Switch 2424M, the slot is in the back.

1-2

10/100Base-TX

RJ-45 ports

Introducing the HP ProCurve Switch 1600M and 2424M

Front of the Switches

LEDs

Table 1-1. Switch LEDs

Switch LEDs State Meaning

Power
(green)

Fault
(orange)

Self Test
(green)

On The switch is receiving power.

Off The switch is NOT receiving power.

Off The normal state; indicates that there are no fault conditions on the switch.

Blinking

On On briefly after the switch is powered on or reset, at the beginning of switch self test.

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

Blinking

†

A fault has occurred on the switch, the switch module (if installed), or a fan. The Status
LED for the device with the fault will blink simultaneously.

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 3, “Troubleshooting” for more information.

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 module into the switch; the module is self
tested when it is hot swapped.

†

A component of the switch has failed its self test. The status LED for that component,
for example a fan, and the switch Fault LED will blink simultaneously.

Introducing the HP ProCurve

Switch 1600M and 2424M

Mode Select
(3 green LEDs)

Module
Status (green)

Fan Status

(green)

Switch 1600M

only

†

The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.

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.

100 Indicates that the port Mode LEDs are lit for ports that are operating at 100 Mbps.

On A module is installed in the switch module slot and that the module is undergoing or

has passed self test.

Off A module is not installed in the switch module slot.

†

Blinking

On The cooling fans are operating normally.

Blinking

The module in the slot has failed self test or is not installed properly. The switch Fault
LED, and the Self Test LED may be flashing simultaneously. If the Module Status LED is
flashing by itself, a different module type has been hot swapped into the slot without

the switch being reset. See “Hot Swapping Switch Modules” on page 2-20.

†

One or more of the cooling fans have failed. The switch Fault LED will be flashing
simultaneously.

1-3

Introducing the HP ProCurve

Switch 1600M and 2424M

Introducing the HP ProCurve Switch 1600M and 2424M

Front of the Switches

Table 1-2. Switch Module LEDs

Port LEDs State Meaning

Link On Indicates the port is enabled and receiving a link beat signal (for the twisted-pair ports),

or a strong enough light level (for the fiber-optic ports on the switch modules) 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.

Mode Displays network activity information, or whether the port is configured for Full Duplex operation, or

100 Mbps operation depending on the mode selected. See “Mode Select Button and Indicator LEDs”
below for more information.

Mode Select 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 1600M and
2424M use a Mode LED for each port. The operation of this LED is controlled
by the Mode Select button, and the current setting is indicated by the Mode
indicator LEDs near the button. Press the button to step from one mode to the
next.

1-4

Mode Select button

and indicator LEDs

■ If the Activity (Act) indicator LED is lit, each Mode LED displays activity

Mode LED

(one for each port)

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 100 Mbps (100) indicator LED is lit, the Mode LEDs light for those

ports that are operating at 100 Mbps.

Introducing the HP ProCurve Switch 1600M and 2424M

Front of the Switches

Console Port

This port is used to connect a console to the switch 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 1600M and 2424M”.
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, executes the switch
self test, and resets all network activity counters to zero. The counters are
displayed in the switch console interface, the switch web browser interface,
and through SNMP network management applications, such as HP TopTools
for Hubs & Switches.

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.

Introducing the HP ProCurve

Switch 1600M and 2424M

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, clears any configuration changes you
may have made through the switch console, the web browser interface,
and SNMP management, and restores the factory default configuration to
the switch. For the specific method to restore the factory default config­uration, see “Restoring the Factory Default Configuration” in chapter 3,
“Troubleshooting” of this manual.

1-5

Introducing the HP ProCurve

Switch 1600M and 2424M

Introducing the HP ProCurve Switch 1600M and 2424M

Back of the Switches

Back of the Switches

.

HP ProCurve Switch 1600M

AC power connector

cooling vent - make sure this is not

obstructed for proper switch operation

HP ProCurve Switch 2424M

Slot for
Switch Module
(Switch 2424M)

Power Connector

The Switch 1600M and Switch 2424M do not have a power switch; they are
powered on when connected to an active AC power source. The switches
automatically adjust to any voltage between 100-127 and 200-240 volts and
either 50 or 60 Hz. There are no voltage range settings required.

Slot for Switch Module (Switch 2424M)

The slot for installing any of the supported switch modules in the Switch
2424M is in the back of the switch. For a description of the modules, see

“Features” on page 1-7.

1-6

Introducing the HP ProCurve Switch 1600M and 2424M

Switch Features

Switch Features

The features of the Switch 1600M and 2424M include:

■ 16 or 24 autosensing 10/100Base-TX RJ-45 ports

■ a slot for installing any of the available switch modules—as of this

printing, these include:

• 8-port 10/100Base-TX Module (HP J4111A)

• 4-port 100Base-FX Module (HP J4112A)

• 1-port Gigabit-SX Module (HP J4113A)

• 1-port Gigabit-LX Module (HP J4114A)

• 4-port 10Base-FL Module (HP J4118A)

• Gigabit Stacking Module (HP J4130A — for Switch 2424M only,
available Summer 1999)

■ the modules are “hot swappable”

■ plug-and-play networking—all ports are enabled—just connect the

network cables to active network devices and your switched network is
operational

■ automatic learning of the network addresses in the switch’s 8000-address

forwarding table, with configurable address aging value

■ automatically negotiated full-duplex operation of the 10 Mbps, 100 Mbps,

ports when connected to other auto-negotiating or full-duplex devices —
Gigabit ports always operate at full duplex

■ easy management of the switches through several available interfaces:

• web browser interface—an easy to use built-in graphical interface
that can be accessed from common web browsers.

• 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.

• HP TopTools for Hubs & Switches—an SNMP-based, full-featured
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—

described in the Management and Configuration Guide that came with
your switch.

Introducing the HP ProCurve

Switch 1600M and 2424M

1-7

Introducing the HP ProCurve

Switch 1600M and 2424M

Introducing the HP ProCurve Switch 1600M and 2424M

Switch Operation Overview

Switch Operation Overview

Address Table Operation

Address Learning. As devices are connected to the switch ports, either
directly or through hubs or other switches, the MAC addresses of those
devices are learned automatically and stored in the 8000-entry address table
featured by the Switch 1600M and 2424M. The switches also identify the
number of the port on which each address is learned so they know the network
location of each device.

Forwarding, Filtering, Flooding. When the switch receives a packet, it
determines the destination address and looks for the address in the address
table. Based on the port location of that address, the switch then determines
whether to forward, filter-out, or flood the packet.

■ forward - if the destination address is on a different port than the one on

which the packet was received, the packet is forwarded to the destination
port and on to the destination device.

■ filter out - if the destination address is on the same port as the one on

which the packet was received, the packet is filtered out. The switch
thereby isolates local traffic so the rest of the network connected to the
switch does not lose bandwidth dealing with unnecessary traffic.

■ flood - whenever a new destination address is found in a packet received

on one switch port, the destination address will not yet be in the switch’s
address table and the switch cannot know whether to forward or filter out
the packet. In this case, it sends the packet to all the other switch ports.
This is referred to as “flooding”. When the destination device receives the
packet, it replies, and the switch learns the new address from the reply
packet. Then, all future packets destined for that address are forwarded
or filtered out appropriately.

Network Moves and Changes. When devices are moved in the network,
and become connected to a different switch port, the Switch 1600M and 2424M
automatically recognize the change and update the address table with the new
port location of the device. Communication with the device is automatically
maintained, without any address table manipulation being required.

1-8

Introducing the HP ProCurve Switch 1600M and 2424M

Switch Operation Overview

Simultaneous Network Communications

As part of the traffic isolation benefits provided by the Switch 1600M and
2424M address table operation, the switches enhance network performance
because they can conduct multiple, simultaneous network connections.
Instead of sharing the network bandwidth, as in connections to a hub, each
connection has its own 10 Mbps, 100 Mbps, or 1000 Mbps bandwidth to use.

Effect of VLANs

If you configure multiple virtual LANs (VLANs) on the switch, each VLAN

behaves as a “logical switch” containing the switch ports that you assign to it.
Each logical switch behaves as an isolated broadcast domain, just as if it were
an isolated physical switch. The forward, filter, and flood behavior described
for the physical switch above, operates the same for each of the logical
switches defined by the VLANs: packets are forwarded or flooded only to the
ports that are within a given VLAN. Just as for separate isolated physical
switches, there is no communication between ports that are in separate VLANs
unless the VLANs are connected by an external router.

For more information on configuring VLANs and their behavior, see the
Management and Configuration Guide that came with your switch.

Introducing the HP ProCurve

Switch 1600M and 2424M

1-9

c2.fm Page 1 Tuesday, January 12, 1999 1:26 PM

Installing the Switch 1600M and 2424M

The HP Switch 1600M and 2424M are easy to install units. They each come
with an accessory kit that includes the brackets for mounting the switch in a
standard 19-inch telco rack or an equipment cabinet, or on a wall, and with
rubber feet that can be attached so the switch can be securely located on a
horizontal surface. The brackets are designed to allow mounting the switch
in a variety of orientations.

This chapter shows you how to install your Switch 1600M and 2424M.

2

Installing the Switch 1600M

and 2424M

Included Parts

The Switch 1600M and 2424M have the following components shipped with
them:

■ HP ProCurve Switch 1600M and 2424M Installation Guide (5967-6966),

this manual

■ HP ProCurve Switch Management and Configuration Guide

(5967-2142 for the 1600M, and 5967-6967 for the 2424M)

■ HP TopTools for Hubs & Switches - CD ROM and booklet

■ Customer Support/Warranty booklet

■ Accessory kit (5064-4280)

• two mounting brackets

• four 10 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

■ Console cable

■ 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

2-1

c2.fm Page 2 Tuesday, January 12, 1999 1:26 PM

Installing the Switch 1600M and 2424M

Installation Procedures

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

2. Install switch module (optional—page 2-6). The switches have a slot

and 2424M

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 a good location for the switch. Please see page

2-3 for some installation precautions.

for installing any of the supported HP switch modules. Depending on
where you will install the switch, it may be easier to install the module

first, but the modules are “hot swappable”—they can also be installed and
removed after the switch is installed and powered on.

3. Verify that the switch passes self test (page 2-8). This is a simple

Installing the Switch 1600M

process of plugging the switch into a power source and observing that the
LEDs on the switch’s front panel and on any optional modules indicate
correct switch operation.

4. Mount the switch (page 2-10). The Switch 1600M and 2424M 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 2-13). Once the switch is
mounted, plug it in to the nearby main power source.

6. Connect the network devices (page 2-14). Using the appropriate
network cables, connect other switches, hubs, routers, computers,
servers, printers, and other network devices to the switch ports.

7. Connect a console to the switch (optional—page 2-15). 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
management station, or through a telnet session to the switch console.
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, the switch is fully installed and your network should be up and
running. See the rest of this chapter if you need more detailed information on
any of these installation steps.

2-2

c2.fm Page 3 Tuesday, January 12, 1999 1:26 PM

Installation Precautions:

Follow these precautions when installing your HP Switch 1600M and 2424M.

Warning ■ The rack or cabinet should be adequately secured to prevent it from

Installing the Switch 1600M and 2424M

Installation Procedures

becoming unstable and/or falling over.

Devices installed in a rack or cabinet should be mounted as low as
possible, with the heaviest device at the bottom and progressively lighter
devices installed above.

Installing the Switch 1600M

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.

■ 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.

■ Make sure that if no module is installed in the module slot, the cover plate

is installed to cover the slot. A cover plate is required for safe operation,
and to ensure proper switch cooling.

and 2424M

2-3

c2.fm Page 4 Tuesday, January 12, 1999 1:26 PM

Installing the Switch 1600M and 2424M

Installation Procedures

1. Prepare the Installation Site

■ Cabling Infrastructure - Ensure that the cabling infrastructure meets

Table 2-1. Summary of Cable Types to Use with the Switch

Port Type Cable Type Length Limits

the necessary network specifications. See the following table for cable
types and lengths, and see appendix B, “Cables and Connectors” for more

information:

and 2424M

Installing the Switch 1600M

10/100Base-TX • 10 Mbps operation:

Category 3, 4, or 5, 100-ohm unshielded
twisted-pair (UTP)

• 100 Mbps operation:

Category 5, 100-ohm UTP or shielded
twisted-pair (STP) cable.

10Base-FL
(on the 10FL
Module)

100Base-FX
(on the 100FX
Module)

Gigabit-SX
(on the Gigabit-SX
Module and the
Gigabit Stacking
Module with SX
transceivers)

62.5/125 µm or 50/125 µm core/cladding

diameter, graded-index, multimode fiber­optic cables that are fitted with ST
connectors

62.5/125 µm or 50/125 µm core/cladding

diameter, graded-index, multimode fiber­optic cables that are fitted with SC
connectors

62.5/125 µm or 50/125 µm core/cladding

diameter, graded-index, multimode fiber­optic cables that are fitted with SC
connectors

100 meters

Note: Since the 10Base-T operation is through
10/100Base-TX ports, if you ever want to upgrade
the ports to 100Base-T, it would be best to cable
the ports initially with category 5 cable.

For connecting these ports to end nodes or other

MDI ports, use “straight-through” cable; for
connecting to MDI-X ports on hubs or other
switches, use “crossover” cable.

1 kilometer

• 412 meters for half-duplex connections

• 2 kilometers for full-duplex connections

•62.5 µm cable:

– 160 MHz*km = 220 meters
– 200 MHz*km = 275 meters

•50 µm cable:

– 400 MHz*km = 500 meters
– 500 MHz*km = 550 meters

Gigabit-LX
(on the Gigabit-LX
Module and the
Gigabit Stacking
Module with LX
transceivers)

single-mode cables fitted with SC
connectors

62.5/125 µm or 50/125 µm core/cladding

diameter, graded-index, multimode fiber­optic cables may also be used, but a mode
conditioning patch cord may be needed —
see the
the module for more information

Installation Guide

2-4

• single-mode cable - 5 kilometers

• multimode cable - 550 meters

that came with

c2.fm Page 5 Tuesday, January 12, 1999 1:26 PM

■ Installation Location - Before installing the switch, plan its location and

Installing the Switch 1600M and 2424M

Installation Procedures

orientation relative to other devices and equipment:

• In the front of the switch, leave at least 7.6 cm (3 inches) of space for

the twisted-pair and fiber-optic cabling.

• In the back of the switch, leave at least 3.8 cm (1 1/2 inches) of space

for the power cord and any network cabling for any installed modules.
For the Switch 2424M, if you are installing a Gigabit Stacking Module
in the back, allow an additional 10 cm (4 inches) for the module and
the fiber-optic or twisted-pair cabling.

• On the sides of the switch, leave at least 7.6 cm (3 inches) for cooling.

Installing the Switch 1600M

and 2424M

2-5

c2.fm Page 6 Tuesday, January 12, 1999 1:26 PM

Installing the Switch 1600M and 2424M

Installation Procedures

2. Install Switch Module (optional)

Install a switch module into the slot as shown in the illustration on the next
page. For installation details, see the instructions in the Installation Guide
that comes with the module.

The slot cover can be removed with either a flat-bladed or Torx T-10 screw­driver. Keep the slot cover for future use.

Notes ■ Any of the supported switch modules can be installed in the slot in the

■ The modules can be “hot swapped”, installed when the switch is powered

Switch 1600M and 2424M, except the Gigabit Stacking Module, which can
be installed only in the Switch 2424M.

on and normally will be immediately operational. But, if the new module
is replacing a module of a different type than what was previously installed
in the slot, the switch must be rebooted after the new module is installed.
See “Hot Swapping the Switch Module” on page 2-20.

and 2424M

Installing the Switch 1600M

The transceivers that provide the ports in the Gigabit Stacking Module
for the Switch 2424M are NOT hot swappable. See the HP ProCurve
Switch 2424M Gigabit Stacking Module Installation Guide or the HP
ProCurve Gigabit Transceivers Installation Guide for more informa­tion.

■ Make sure the module is fully installed and that you screw in the

retaining screws to secure the module in place.

■ If you do not install a module in the slot, make sure that the slot cover

plate is still attached over the slot for safe operation and proper switch
cooling.

2-6

c2.fm Page 7 Tuesday, January 12, 1999 1:26 PM

Installing a Switch Module in the Switch 1600M

Insert module into the guides and slide it
in until it stops. Then press in firmly until

the module “snaps” into place and is
flush with the face of the switch.

make sure you tighten the retaining
screws on the module

Installing the Switch 1600M and 2424M

Installation Procedures

Then

.

Installing the Switch 1600M

and 2424M

Installing a Switch Module in the Switch 2424M

2-7

c2.fm Page 8 Tuesday, January 12, 1999 1:26 PM

Installing the Switch 1600M and 2424M

Installation Procedures

3. Verify the Switch Passes Self Test

Before mounting the switch in its network location, you should first verify that
it is working properly by plugging it into a power source and verifying that it
passes its self test.

1. Connect the power cord supplied with the switch to the power connector
on the back of the switch, and then into a properly grounded electrical
outlet.

Connect power c ord to

the power connector

and 2424M

Installing the Switch 1600M

Note The Switch 1600M and Switch 2424M do not have a power switch. They are

powered on when the power cord is connected to the switch and to a 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.

2. Check the LEDs on the switch and on the switch module (if installed in
the switch). The LED behavior is described on the next page.

Note The illustration on the next page shows a Switch 1600M. The LEDs on the

Switch 2424M are located differently than what is shown, but the LED
behavior is the same as described on the page.

2-8

c2.fm Page 9 Tuesday, January 12, 1999 1:26 PM

Installing the Switch 1600M and 2424M

Installation Procedures

switch port LEDs

Power and Fault LEDs

LED Behavior:

Self Test LED

Installing the Switch 1600M

When the switch is powered on, it performs its diagnostic self test. The
self test takes approximately 45 seconds to complete.

and 2424M

During the self test:

• Initially, all the switch and port LEDs are on.

• After approximately 3 seconds most of the LEDs go off and then may

come on again during phases of the self test. For the duration of the
self test, the Self Test LED stays on.

When the self test completes successfully:

•The Power LED remains on.

• For the Switch 1600M, the Fan Status LED also stays on.

• For a switch in which a module is installed, the Module Status LED

also stays on.

•The Fault and Self Test LEDs go off.

• The port LEDs on the front of the switch and on the switch module

go into their normal operational mode:
– If the ports are connected to active network devices, the Link

LEDs stay on and the Mode LEDs behave according to the mode
selected. In the default mode (Activity), the Mode LEDs should
flicker showing network activity on the port.

– If the ports are not connected to active network devices, the Link

and Mode LEDs will stay off.

If the LED display is different than what is described above, especially if
the Fault and Self Test LEDs stay on for more than 60 seconds or they
start blinking, the self test has not completed correctly. Refer to chapter
3, “Troubleshooting” for diagnostic help.

2-9

c2.fm Page 10 Tuesday, January 12, 1999 1:26 PM

Installing the Switch 1600M and 2424M

Installation Procedures

4. Mount the Switch

After you have verified that the switch passes self test, you are ready to mount
the switch in a stable location. The Switch 1600M and 2424M can be mounted
in these ways:

■ in a rack or cabinet

■ on a horizontal surface

■ on a wall

Rack or Cabinet Mounting

The Switch 1600M and 2424M are designed to be mounted in any EIA-standard
19-inch telco rack or in an equipment cabinet such as a server cabinet.

and 2424M

Installing the Switch 1600M

Warning For safe operation, please read the mounting precautions on

page 2-3, before mounting a switch.

1. Use a #1 Phillips (cross-head) screwdriver and attach the mounting
brackets to the switch with the included 10-mm M4 screws.

10 mm

M4 screws

2-10

c2.fm Page 11 Tuesday, January 12, 1999 1:26 PM

2. Partially install a screw (5/8-inch number 12-24) into the top hole of a pair

.

partially install a screw

into the top hole of a

close (0.5-inch) pair on

both sides of the rack

Installing the Switch 1600M and 2424M

Installation Procedures

of holes that are 0.5 inches apart in each rack/cabinet upright as shown
in the illustration below. Ensure that the screws are at the same level in
each upright.

Installing the Switch 1600M

and 2424M

3. Place the switch in the rack and lower it so the notches in the bottom of
the bracket slide onto the screws, then tighten these screws.

.

lower switch with mounting

brackets onto the partially

installed screw

2-11

c2.fm Page 12 Tuesday, January 12, 1999 1:26 PM

Installing the Switch 1600M and 2424M

Installation Procedures

4. Install the other number 12-24 screw into the upper hole in each bracket.

install additional

screw

Tighten these screws.

and 2424M

Installing the Switch 1600M

Horizontal Surface Mounting

Attach the bumper feet included in the accessory kit to the bottom of the
switch, and place the switch on a table or other horizontal surface. Use a
sturdy surface in an uncluttered area. You may want to secure the networking
cables and switch power cord to the table legs or other part of the surface
structure to help prevent people from tripping over the cords.

Note Make sure the air flow is not restricted around the sides and back of the switch.

2-12

c2.fm Page 13 Tuesday, January 12, 1999 1:26 PM

Wall Mounting

You can mount the switch on a wall as shown in the illustration below.

Caution The switch should be mounted only to a wall or wood surface that is at least

1/2-inch plywood or its equivalent.

1. Use a #1 Phillips (cross-head) screwdriver and attach the mounting

2. Attach the switch to the wall or wood surface with two 5/8-inch number

Installing the Switch 1600M and 2424M

Installation Procedures

brackets to the switch with the included 10-mm M4 screws.

12 wood screws (not included).

Installing the Switch 1600M

and 2424M

10 mm M4

screws

5/8-inch wood

screws

5. Connect the Switch to a Power Source

1. Plug the included power cord into the switch’s power connector and into

a nearby AC power source.

2. Re-check the LEDs during self test. See “LED Behavior” on page 2-9.

2-13

X

2

c2.fm Page 14 Tuesday, January 12, 1999 1:26 PM

Installing the Switch 1600M and 2424M

Installation Procedures

6. Connect the Network Cables

Connect the network cables, described under “Cabling Infrastructure” (page
2-4), from the network devices or your patch panels to the fixed RJ-45 ports
on the switch or the ports on any module you have installed in the switch.

Using the RJ-45 Connectors (10/100Base-TX ports)

To c on ne ct :

Push the RJ-45 plug into the RJ-45
jack until the tab on the plug clicks
into place. When power is on for the
switch and for the connected device,
the Link LED for the port should light
to confirm a powered-on device (for
example, an end node) is at the other
end of the cable.

1X

Link

9X

Link

2X 3X 4

Mode

10X 11X 1

Mode

RJ-45 connector

and 2424M

Installing the Switch 1600M

If the Link LED does not go on when
the network cable is connected to the
port, see “Diagnosing With the LEDs”
in chapter 3, “Troubleshooting”.

Unshielded twisted-pair cable:

• Category 3, 4, or 5 for 10 Mbps ports

• Category 5 only for 100 Mbps ports

Maximum distance: 100 meters

To disconnect:

Press the small tab on the plug and
pull the plug out of the jack

.

Connecting Cables to the Switch Module

If you have a switch module installed in the switch, the type of network
connections you will need to use depends on the type of module you have
installed. See the documentation accompanying the modules for cabling
configurations and procedures for those modules.

The module documentation will also cover troubleshooting procedures for
connections to the module, but, in general for all the switch ports, when a
network cable from an active network device is connected to the port, the
Link LED for that port should go on. If the Link LED does not go on when the
network cable is connected to the port, see “Diagnosing With the LEDs” in
chapter 3, “Troubleshooting”.

2-14

c2.fm Page 15 Tuesday, January 12, 1999 1:26 PM

7. (Optional) Connect a Console to the Switch

The Switch 1600M and 2424M have a full-featured, easy to use console
interface for performing the following tasks:

■ Monitor switch and port status and observe network activity counters

■ Modify the switch’s configuration

■ Read the event log and access diagnostic tools to help in troubleshooting

■ Download new software to the switch

■ Add passwords to control console, web browser interface, and

Installing the Switch 1600M and 2424M

Installation Procedures

network management access to the switch

The console can be accessed through these methods:

■ Out-of-band: The Switch 1600M and 2424M come with a serial cable for

connecting a PC or VT-100 terminal to be used as a console directly to the
switch. If the PC or terminal has a 25-pin serial connector, you can use a
readily available 9-pin to 25-pin serial cable, or attach a 9-to-25 pin adapter
to the end of the supplied cable.

■ In-Band: Access the console using Telnet from a PC or UNIX station on

the network, and a VT-100 terminal emulator. This method requires that
you first configure the switch with an IP address and subnet mask by using
either out-of-band console access or through DHCP/Bootp.

The Switch 1600M and 2424M can simultaneously support one out-of-band
console session through the Console Port and one in-band telnet console
session.

Terminal Configuration

To connect a console to the switch, configure the PC terminal emulator as a
DEC VT-100 (ANSI) terminal or use a VT-100 terminal, and configure either
one to operate with these settings:

• any baud rate from 2400 to 115200 (the switch senses the speed)

• 8 data bits, 1 stop bit, no parity, and flow control set to XON/XOFF

(Switch 1600M) or None (Switch 2424M).

• For the Windows Terminal program, also disable (uncheck) the “Use

Function, Arrow, and C

• For the Hilgrave HyperTerminal program, select the “Windows keys”

option for the “Function, arrow, and ctrl keys act as” parameter.

trl Keys for Windows” option.

Installing the Switch 1600M

and 2424M

If you want to operate the console using a different configuration, make sure
you change the settings on both the terminal and on the switch. Change the
switch settings first, then change the terminal settings, and reestablish the
console session.

2-15

c2.fm Page 16 Tuesday, January 12, 1999 1:26 PM

Installing the Switch 1600M and 2424M

Installation Procedures

Direct Console Access

To connect a console to the
switch, follow these steps:

1. Connect the PC or

2. Turn on the terminal or

and 2424M

terminal to the switch’s
Console Port using the
console cable included
with the switch. (If your
PC or terminal has a 25-pin
serial connector, first
attach a 9-pin to 25-pin
adapter at one end of the
console cable.)

PC’s power and, if using a
PC, start the PC terminal
program.

console port

console cable s upplied

with the switch

PC running a terminal

emulator program, or

a VT-100 terminal

Switch1600

HPJ4120A

Power

ConsoleFault

A

Reset

3. Press [Enter] two or three times and you will see the copyright page and the

Installing the Switch 1600M

message “Press any key to continue”. Press a key, and you will then see
the switch console Main Menu.

Telnet Console Access

To access the switch through a telnet session, follow these steps:

1. Make sure the switch is configured with an IP address and that the switch
is reachable from the telnet workstation (for example by using a Ping
command to the switch’s IP address).

2. Start the telnet program and connect to the switch’s IP address.

3. You will see the copyright page and the message “Press any key to
continue”. Press a key, and you will then see the switch console Main
Menu.

If you want to continue with console management of the switch at this time,
refer to the Management and Configuration Guide that came with your
switch.

2-16

c2.fm Page 17 Tuesday, January 12, 1999 1:26 PM

Sample Network Topologies

This section shows you a few sample network topologies in which the Switch
1600M and 2424M are implemented. For more topology information, see the
document Designing HP AdvanceStack Workgroup Networks, which can be
found on the HP network products World Wide Web site, http://www.hp.com/
go/procurve. You may also be able to obtain a printed copy of this document
from your HP-authorized LAN dealer.

Installing the Switch 1600M and 2424M

Sample Network Topologies

As a Desktop Switch

twisted-pair

“straight-through”

cables

Switch 2424M is designed to be used primarily as a desktop switch to which
end nodes, printers and other peripherals, and servers are directly connected,
as shown in the above illustration. Notice that the end node devices are

connected to the switch by “straight-through” twisted-pair cables.

Installing the Switch 1600M

and 2424M

Server

Switch 2424M

PCs and

peripherals

2-17

c2.fm Page 18 Tuesday, January 12, 1999 1:26 PM

Installing the Switch 1600M and 2424M

Sample Network Topologies

As a Segment Switch

and 2424M

Installing the Switch 1600M

Server with

“Fast” Ethernet

100 Base-FX

fiber-optic cable

to backbone

“Fast”

Ethernet

Hubs

twisted-pair

“straight-through ”

cables to end

nodes

category 5 twisted-pair “straight-through”

NIC

cable for 100 Mbps connection to server

Switch 1600M

twisted-pair “cross-over”

cables to hubs

printers,

and local

servers

The Switch 1600M can also be used as a desktop switch, but it works well as
a segment switch. That is, with its high performance, it can be used for

interconnecting network segments—simply connect the network hubs that
form those segments to the switch, or connect other switches.

PCs,

2-18

In the illustration above, two “Fast” Ethernet hubs with PCs, printers, and local
servers attached, are both connected to a Switch 1600M. The devices attached
to the two hubs can now communicate with each other through the switch.
They can also all communicate with the server that is connected to the switch
through its 100Base-TX port.

The connections between the switch and the MDI-X ports on the hubs is
through category 5 “cross-over” twisted-pair cable. Category 3 or 4 cable can
also be used if the connection is 10 Mbps only. If the hubs have MDI ports, you
can connect them to the switch through “straight-through” cable. The connec­tion to the server is through category 5 “straight-through” twisted-pair cable.

The switch, in turn, is connected to a network backbone through fiber-optic
cabling connected to a 100Base-FX module installed in the switch. Now, all
the devices on these network segments can access other network resources
that are connected elsewhere on the network backbone.

c2.fm Page 19 Tuesday, January 12, 1999 1:26 PM

Connecting to a Backbone Switch

to Gigabit-Ethernet

backbone

Installing the Switch 1600M and 2424M

Sample Network Topologies

Switch 2424M

Installing the Switch 1600M

and 2424M

Switch 8000M

Switch 1600M

The simpler desktop and segment networks shown in the previous two
examples can easily be combined and expanded. For example, you could use
an HP ProCurve Switch 8000M to interconnect each of your smaller switched
workgroups to form a larger switched network. All the devices in this network
can communicate with each other. With a Gigabit-SX Module, for example, in
the Switch 8000M, the entire switched topology could be connected to a
campus backbone, as shown in the illustration above.

Note In the illustration above, the 100 Mbps fiber-optic connection between the

Switch 2424M and the Switch 8000M is by way of a 100Base-FX Module
installed in the back of the Switch 2424M.

2-19

c2.fm Page 20 Tuesday, January 12, 1999 1:26 PM

Installing the Switch 1600M and 2424M

Hot Swapping the Switch Module

Hot Swapping the Switch Module

Any of the HP ProCurve Switch Modules can be “hot swapped”, that is installed

or replaced while the switch is powered on. The procedures differ slightly,
though, between adding a new module to the empty slot or replacing the
module with the same type, and exchanging the module with a different type.

Caution The gigabit transceivers that provide the ports for the Gigabit Stacking

Module for the Switch 2424M are NOT hot swappable. The transceivers must
be installed, removed, or replaced when the module is not receiving power
from the switch, either by installing the transceivers before installing the
module, removing the module from the switch before installing or removing
the transceivers, or powering off the switch before installing or removing the
transceivers. Please see the installation guide that came with your Gigabit
Stacking Module or Gigabit Transceivers for more information.

and 2424M

Adding or Replacing the Module

Installing the Switch 1600M

If a module has to be replaced with one of the same type, or you are expanding
the switch capability by adding a module for the first time, the replaced or
new module is immediately operational; there is no interruption to the switch
operation.

Changing the Module Type

If you exchange the module with one of a different type, for example a
100Base-FX module is installed in place of a 10/100Base-T module that was in
the slot, the switch must be rebooted after the new module is installed so the
switch processor can properly initialize and configure the new module type.

You can reboot the switch by any of these methods:

■ select the Reset or Reboot option from the console, web browser inter-

face, or HP TopTools for Hubs & Switches

■ press the Reset button on the switch

■ unplug and plug in the power cord (power cycle)

Until the switch is rebooted, the new module will not operate, the Module
Status LED will continue to blink, and all the LEDs on the module will stay on
continuously.

2-20

c2.fm Page 21 Tuesday, January 12, 1999 1:26 PM

Where to Go From Here

Your switch is now correctly installed and is able to send and receive data
between end nodes, servers, and printers.

The Switch 1600M and 2424M are plug-and-communicate network devices
requiring no configuration. If you wish to manage these switches from an
SNMP-based network management station, you will need to configure the IP
address on the switches; see the Management and Configuration Guide that
came with your switch for information on how to use the switch console to
configure the IP address.

Installing the Switch 1600M and 2424M

Where to Go From Here

Installing the Switch 1600M

Note The Switch 1600M and 2424M can also be managed through a graphical

interface that you can access from any PC or workstation on the network by

running your web browser and typing in the switch’s IP address as the URL.
No additional software installation is required to make this interface available;
it is included in the switch’s onboard software.

and 2424M

2-21

c2.fm Page 22 Tuesday, January 12, 1999 1:26 PM

Troubleshooting

This chapter describes how to troubleshoot your Switch 1600M and 2424M.
Note that this document describes troubleshooting mostly from a hardware
perspective. You can perform more in-depth troubleshooting using the soft­ware tools available with the switch, including the full-featured console
interface, the built-in web browser interface, and HP TopTools for Hubs &
Switches, the SNMP-based network management tool. See the Trouble­shooting chapter of the Management and Configuration Guide included with
your switch for more information.

This chapter describes the following:

■ basic troubleshooting tips (page 3-2)

■ diagnosing with the LEDs (page 3-4)

■ Proactive Networking tools (page 3-7)

■ hardware diagnostic tests (page 3-8)

■ restoring the factory default configuration (page 3-10)

■ HP Customer Support Services (page 3-11)

3

Troubleshooting

3-1

Troubleshooting

Basic Troubleshooting Tips

Basic Troubleshooting Tips

Most problems are caused by the following situations. Check for these items
first when starting your troubleshooting:

■ Incorrect switch-to-switch or switch-to-hub connections. If you

have connected your switch to another switch or a hub by using twisted­pair cable from an RJ-45 MDI-X connector on your switch to an MDI-X
connector on the other switch or hub, you must use a crossover cable.
If you have used a straight-through cable, the connection will not work.
The LED for the port you are using will not come on when you connect
the cable.

Most switch and hub ports are wired as MDI-X ports, so for these switch­to-switch or switch-to-hub connections use a crossover cable. LAN
adapters in end nodes are normally wired as MDI ports, as are some ports
on hubs and switches. For connections from the switch to these MDI
ports, use a straight-through cable. See appendix B, “Cables and

Connectors” for pinouts and correct cable wiring for crossover and
straight-through twisted-pair cables.

■ Faulty or loose cables. Look for loose or obviously faulty connections.

If they appear to be OK, make sure the connections are snug. If that does
not correct the problem, try a different cable.

■ Non-standard cables. Non-standard and miswired cables may cause

numerous network collisions and other network problems, and can seri­ously impair network performance. Use a new correctly-wired cable or
compare your cable to the cable in appendix B, “Cables and Connectors”
for pinouts and correct cable wiring. A category 5 cable tester is a

Troubleshooting

recommended tool for every 100Base-T network installation.

■ Improper Network Topologies. It is important to make sure you have

a valid network topology. Common topology faults include excessive
cable length and excessive repeater delays between end nodes. If you have
network problems after recent changes to the network, change back to
the previous topology. If you no longer experience the problems, the new
topology is probably at fault. Refer to the Network Design Guide for
topology configuration guidelines. This guide can be found online at the
HP World Wide Web site for networking products, http://www.hp.com/go/
procurve under the

[Tech Library] button.

3-2

Troubleshooting

Basic Troubleshooting Tips

In addition, you should make sure that your network topology contains
no data path loops. Between any two end nodes, there should be only one
active cabling path at any time. Data path loops will cause broadcast
storms that will severely impact your network performance.

If you wish to build redundant paths between important nodes in your
network to provide some fault tolerance, you should enable Spanning
Tree Protocol support on the switch. This ensures that only one of the
redundant paths is active at any time, thus avoiding data path loops.
Spanning Tree can be enabled through the switch console, the web
browser interface, or HP TopTools for Hubs & Switches.

The Switch 1600M also supports Switch Meshing which allows multiple
data paths though a switched network to be active simultaneously for
enhanced network bandwidth. See the Management and Configuration
Guide that came with your switch for more information on Spanning Tree
and on Switch Meshing.

■ Check the port configuration. A port may not be operating as you

expect because it has been put into a “blocking” state by Spanning Tree

or Switch Meshing. Or, the port just may have been configured as disabled
through software.

Use the switch console to determine the port’s configuration and verify
that there is not an improper or undesired configuration of any of the
switch features that may be affecting the port. See the Management and
Configuration Guide that came with your switch for more information.

Troubleshooting

3-3

Troubleshooting

Diagnosing with the LEDs

Diagnosing with the LEDs

Tables 3-1 shows LED patterns on the switch and the switch modules that
indicate problem conditions.

1. Check in the table for the LED pattern that you see on your switch.

2. Refer to the corresponding diagnostic tip on the next few pages.

Table 3-1. LED Error Indicators

LED Pattern Indicating Problems

Module

Power Fault Self Test

Off with

power

cord

plugged

in

On Prolonged OnProlonged

On Blinking

On Blinking

On Off Off Blinking

On Blinking

**** *

On

†

†

†

Blinking

Blinking

†

†

Blinking

Off * Blinking

Status

** *

** *

Fan Status

1600M only)

†

†

Link

(Switch

* All Link and Mode

**

†

(per port)

LEDs On

*

Diagnostic

Tips

➊

➋
➌

➍
➎

➏

Troubleshooting

On Off Off On * Off with cable

connected

On Off Off On * On, but the port is

not

communicating

➐
➑

* This LED is not important for the diagnosis.

†

The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.

3-4

Diagnostic Tips:

Tip Problem Solution

Troubleshooting

Diagnosing with the LEDs

➊

➋

➌

➍

The switch is not
plugged into an
active AC power
source, or the

switch’s power
supply may have
failed.

A switch
hardware failure
has occurred. All
the LEDs will st ay
on indefinitely.

The switch has
experienced a
software failure
during self test.

The module
installed in the
slot is not
installed
properly, has
experienced a
self test fault, or
has become
partly removed
during switch
operation.

1. Verify that the power cord is plugged into an active power source and to the switch.
Make sure these connections are snug.

2. Try power cycling the switch by unplugging and plugging the power cord back in.

3. If the Power LED is still not on, verify that the AC power source works by plugging
another device into the outlet. Or try plugging the switch into a different outlet or try a
different power cord.

If the power source and power cord are OK and this condition persists, the switch power
supply may have failed. Call your HP-authorized LAN dealer, or use the electronic support
services from HP to get assistance. See the Customer Support/Warranty card for more
information.

Try power cycling the switch. If the fault indication reoccurs, the switch may have failed.
Call your HP-authorized LAN dealer, or use the electronic support services from HP to get
assistance. See the Customer Support/Warranty card for more information.

1. Try resetting the switch by pressing the Reset button on the front of the switch, or by
power cycling the switch.

2. If the fault indication reoccurs, attach a console to the switch (as indicated in chapter

2) and configure it to operate at 9600 baud. Then, reset the switch. Messages should
appear on the console screen and in the console log identifying the error condition.
You can view the console log at that point by selecting it from the console Main Menu.

If necessary to resolve the problem, contact your HP-authorized LAN dealer, or use the
electronic support services from HP to get assistance. See the Customer Support/
Warranty card for more information.

The module is tested whenever the switch is powered on, or reset (through the Reset
button on the switch, or the Reboot or Reset options in the console or web browser
interface), and when it is hot swapped (installed when the switch is powered on).

Under this error condition, the following events also occur:

• All the LEDs on the module stay on until the error is resolved.

• The switch software, including console and web browser access will not be opera­tional for approximately one minute from the time the module gets into this condition.

Try rebooting the switch again. If that does not resolve the problem, try reinstalling the
module. You can do this without having to power down the switch. When the module is
reinstalled, it will be retested automatically. Make sure to screw in the retaining screws
so that the module cannot be inadvertently pulled out by pulling on the network cables.

If the fault indication reoccurs, the module may have failed. Remove the module from the
switch and replace it with another module, or cover the slot with the cover plate. Call your
HP-authorized LAN dealer, or use the electronic support services from HP to get
assistance. See the Customer Support/Warranty card for more information.

Troubleshooting

3-5

Troubleshooting

Diagnosing with the LEDs

Tip Problem Solution

➎

➏

➐

A module was
installed in the
slot that is a
different type
than the
previously
installed module,
and the switch
has not yet been
reset.

One or more of
the switch
cooling fans may
have failed.
(Switch 1600M
only)

The network
connection is not
working
properly.

When you “hot swap” modules in the module slot, if you install a different module type
than the one that was previously installed in the slot, you must reset the switch. This
allows the switch processor to properly initialize and configure the new module type. The
blinking LED informs you that this change of module types has occurred. The module will
not work properly until the switch is reset as indicated by all the module’s LEDs staying
on until the switch is reset.

You can reset the switch by any of these methods:

• pressing the Reset button on the switch

• power cycling the switch

• selecting the reset or reboot option from the console, web browser interface, or HP
Top Too ls .

Try disconnecting power from the switch and wait a few moments. Then reconnect the
power to the switch and check the LEDs again. If the error indication reoccurs, one or
more of the fans has failed. The switch has two fans and may continue to operate OK
under this condition if the ambient temperature does not exceed normal room
temperature, but for best operation, the switch should be replaced. Contact your HP­authorized LAN dealer, or use the electronic support services from HP to get assistance.
See the Customer Support/Warranty card for more information.

Try the following procedures:

• For the indicated port, verify that both ends of the cabling, at the switch and the
connected device, are connected properly.

on

• Verify the connected device and switch are both powered

• Verify that you have used the correct cable type for the connection.

- for twisted-pair connections, in general, for connecting an end node to the switch,
use “straight- through” cable; for connecting MDI-X ports on hubs or other switches,
use “crossover” cable.

- for fiber-optic connections, verify that the transmit port on the switch is connected
to the receive port on the connected device, and the switch receive port is connected
to the transmit port on the connected device.

• Verify that the port has not been disabled through a switch configuration change.

and operating correctly.

Troubleshooting

➑

The port may be
improperly
configured

You can use the console interface, or, if you have configured an IP address on the
switch, use the web browser interface, or HP TopTools for Hubs & Switches network
management software to determine the state of the port and re-enable the port if
necessary.

• If the other procedures don’t resolve the problem, try using a different port or a
different cable.

Use the switch console, through the Status and Counters Menu, to see if the port is part
of a switch mesh (Switch 1600M only) or to see if Spanning Tree is enabled on the switch,
and to see if the port may have been put into a “blocking” state by those features. Also
check the Port Status screen from the Status and Counters Menu to see if the port has
been configured as “disabled”. Other switch features that may affect the port operation
include VLANs and IGMP. Use the switch console to see how the port is configured for
these features.

For software troubleshooting tips, see chapter 8, “Troubleshooting” in the

and Configuration Guide

3-6

Management

that came with your switch.

Troubleshooting

Proactive Networking

Proactive Networking

The Switch 1600M and 2424M have built-in management capabilities that
proactively help you manage your network including:

■ finding and helping you fix the most common network error conditions

(for example, faulty network cabling, and non-standard network topolo­gies)

■ informing you of the problem with clear, easy-to-understand messages

■ recommending network configuration changes to enhance the perfor-

mance of your network

The following interfaces provide tests, indicators, and an event log that can
be used to monitor the switch and its network connections and to help you
take advantage of these proactive networking features:

■ HP TopTools for Hubs & Switches - an SNMP-based network management

tool that is included with your switch.

■ A graphical web browser interface that you can use to manage your switch

from a PC running a supported web browser, for example Microsoft
Internet Explorer, and Netscape Communicator.

■ A full-featured easy-to-use console interface that you can access by

merely connecting a standard terminal or PC running a terminal emulator

to the switch’s console port. The cable to make that connection is
provided with your switch. The console interface is also accessible
through a telnet connection.

Troubleshooting

See chapter 8, “Troubleshooting”, in the Management and Configuration
Guide that came with your switch for more information on using these

software tools to diagnose and manage your switch.

3-7

Troubleshooting

Hardware Diagnostic Tests

Hardware Diagnostic Tests

Testing the Switch by Resetting It

If you believe that the switch is not operating correctly, you can reset the
switch to test its circuitry and operating code. To reset a switch, either:

■ Unplug and plug in the power cord (power cycling)

■ Press the reset button on the front of the switch

Power cycling the switch and pressing the Reset button both cause the switch
to perform its power-on selftest, which almost always will resolve any tempo­rary operational problems. These reset processes also cause any network
traffic counters to be reset to zero, and cause the System Up Time timer to
reset to zero. None of the reset procedures cause any changes to the switch
configuration.

Checking the Switch LEDs

The selftest passes if the Fault and Self Test LEDs on the front of the switch
go off after approximately 30 to 45 seconds. (For the Switch 1600M, the
duration depends on whether a module is installed in the switch.) If these
LEDs stay on longer than 60 seconds or begin blinking, the switch may have
to be replaced.

See “Diagnosing With the LEDs” on page 3-4 for information on interpreting
the LED patterns.

Troubleshooting

Checking Console Messages

Useful diagnostic messages may be displayed on the console screen when the
switch is reset. As described in chapter 2 under step 7, “Connect a Console to
the Switch”, connect a PC running a VT-100 terminal emulator program or a
standard VT-100 terminal to the switch’s Console Port and configure it to run
at 9600 baud, and with the other terminal communication settings shown on
page 2-15. Then, when you reset the switch, note the messages that are
displayed. Additionally, you can check the switch event log, which can be
accessed from the console Main Menu.

3-8

Troubleshooting

Hardware Diagnostic Tests

Testing Twisted-Pair Cabling

If you think the cable should work but still isn’t working, it may not be
compatible with the IEEE 802.3 Type 10Base-T or 100Base-TX standards. The
twisted-pair cables attached to the Switch 1600M and 2424M must be compat­ible with these standards. To verify that your cable is compatible with these
standards, use a qualified cable test device.

HP also offers a wire testing service. Contact your HP-authorized LAN dealer
or your local HP sales office for more information.

Note Make sure that you are using the correct cabling type for each connection.

The switch 10 Mbps and 100 Mbps UTP ports are all wired as MDI-X. For
connecting end nodes and other MDI-type devices, use “straight-through”
cable. For connecting hubs, other switches, and other MDI-X devices, use
“crossover” cable. See appendix B, “Cables and Connectors” for the pinouts
for these cables.

Testing Switch-to-Device Network Communications

You can perform the following communication tests to verify that the network
is operating correctly between the switch and any connected device that can
respond correctly to the communication test.

■ Link Test -- a physical layer test that sends IEEE 802.2 test packets to any

device identified by its MAC address

■ Ping Test -- a network layer test used on IP networks that sends test

packets to any device identified by its IP address

These tests can be performed through the switch console interface from a
terminal connected to the switch or through a telnet connection, or from the
switch’s web browser interface. See the Management and Configuration
Guide that came with your switch for more information.

These tests can also be performed from an SNMP network management
station running a program that can manage the switch, for example, HP
TopTools for Hubs & Switches.

Troubleshooting

3-9

Troubleshooting

Restoring the Factory Default Configuration

Testing End-to-End Network Communications

Both the switch and the cabling can be tested by running an end-to-end
communications test -- a test that sends known data from one network device
to another through the switch. For example, if you have two PCs on the
network that have LAN adapters between which you can run a link-level test
or Ping test through the switch, you can use this test to verify that the entire
communication path between the two PCs is functioning correctly. See your
LAN adapter documentation for more information on running a link test or
Ping test.

Restoring the Factory Default
Configuration

As part of your troubleshooting process, it may become necessary to return
the switch configuration to the factory default settings. This process momen­tarily interrupts the switch operation, clears any passwords, clears the console
event log, resets the network counters to zero, performs a complete self test,
and reboots the switch into its factory default configuration including deleting
an IP address.

To execute the factory default reset, perform these steps:

1. Using pointed objects, simultaneously press both the Reset and Clear
buttons on the front of the switch.

2. Continue to press the Clear button while releasing the Reset button.

Troubleshooting

3. When the Self Test LED begins to blink, release the Clear button.

The switch will then complete its self test and begin operating with its
configuration restored to the factory default settings.

3-10

Troubleshooting

HP Customer Support Services

HP Customer Support Services

If you are still having trouble with your switch, Hewlett-Packard offers support
24 hours a day, seven days a week through the use of a number of automated
electronic services. See the Customer Support/Warranty booklet that came
with your switch for information on how to use these services to get technical
support. The HP networking products World Wide Web site,
http://www.hp.com/go/procurve also provides up-to-date support informa­tion.

Additionally, your HP-authorized network reseller can provide you with assis­tance, both with services that they offer and with services offered by HP.

Before Calling Support

Before calling your networking dealer or HP Support, to make the support
process most efficient, you first should have retrieved the following informa­tion:

Information Item Information Location

• product identification the front of the switch: Switch 1600M (HP J4120A) or
Switch 2424M (HP J4093A)

• switch’s OS (software)

version

• copy of the switch config-

uration

• copy of the switch Event

Log

• copy of the switch status

and counters information,
including the detailed
counters for the problem
port(s)

• copy of your network

topology map, including
network addresses as­signed to the relevant de­vices

switch console: Main Menu –> 1. Status and Counters –>

1. General System Information (Firmware revision field)

switch console: Main Menu –> 5. Diagnostics –>

3. Browse Configuration File

switch console: Main Menu –> 4. Event Log

switch console: Main Menu –> 1. Status and Counters –>

4. Port Status and 5. Port Counters

your network records

Troubleshooting

3-11

Specifications

Except where otherwise noted, the following specifications apply to both the
Switch 1600M and the Switch 2424M.

Physical

Width: 44.2 cm (17.4 in)

Depth: 33.5 cm (13.2 in)

Height: 6.6 cm (2.6 in)

Weight:

• Switch 1600M

• Switch 2424M

A

4.5 kg (9.9 lbs)

4.7 kg (10.4 lbs)

Electrical

The Switch 1600M and 2424M automatically adjust to any voltage between
100-127 and 200-240 volts and either 50 or 60 Hz.

AC voltage: 100–127 volts 200–240 volts

Maximum current:

• Switch 1600M

• Switch 2424M

Frequency range: 50/60 Hz 50/60 Hz

1.0 A

2.0 A

0.6 A

1.0 A

Environmental

Operating Non-Operating

Temperature: 0°C to 55°C (32°F to 131°F) -40°C to 70°C (-40°F to 158°F)

Relative humidity:
(non-condensing)

Maximum altitude: 4.6 Km (15,000 ft) 4.6 Km (15,000 ft)

15% to 95% at 40°C (104°F) 15% to 90% at 65°C (149°F)

Specifications

A-1

Specifications

Acoustic

• Switch 1600M:
Geraeuschemission LwA=54 dB am fiktiven Arbeitsplatz nach DIN 45635 T.19

• Switch 2424M:
Geraeuschemission LwA=55 dB am fiktiven Arbeitsplatz nach DIN 45635 T.19

Connectors

■ The 10/100 Mbps RJ-45 twisted-pair ports are compatible with the

IEEE 802.3u 100Base-TX and IEEE 802.3 Type 10Base-T standards.

■ The 100 Mbps SC fiber-optic ports on the 100Base-FX Switch Module are

compatible with the IEEE 802.3u 100Base-FX standard.

■ The 10 Mbps ST fiber-optic ports on the 10Base-FL Switch Module are

compatible with the IEEE 802.3 Type 10Base-FL standard.

■ The 1000 Mbps SC fiber-optic ports on the Gigabit-SX and Gigabit-LX

Switch Modules, and on the Gigabit-SX and Gigabit-LX transceivers for
the Gigabit Stacking Module are compatible with the IEEE 802.3z Gigabit­SX and Gigabit-LX standards.

Safety

■ EN60950 / IEC 950

■ CSA 22.2 No. 950

■ UL 1950

Specifications

A-2

Connectors and Cables

This appendix includes switch connector information and network cable
information for cables that should be used with the Switch 1600M and 2424M,
including minimum pin-out information and specifications for twisted-pair
cables.

Note Incorrectly wired cabling is the most common cause of problems for LAN

communications. HP recommends that you work with a qualified LAN cable
installer for assistance with your cabling requirements.

Connectors

Twisted Pair

B

Connectors and Cables

■ The fixed RJ-45 10/100Base-T ports on the switches and the ports on the

10/100Base-T Module accept 100-ohm unshielded and shielded twisted­pair cable with RJ-45 connectors as described on the next page.

Fiber-Optic

■ The ports on the 10Base-FL Module transmit at 820 nm wavelength, and

accept the multimode fiber-optic cables for 10Base-FL described on the
next page.

■ The ports on the 100Base-FX Module transmit at 1300 nm wavelength,

and accept the multimode fiber-optic cables for 100Base-FX described on
the next page.

■ The ports on the Gigabit-SX Module and the Gigabit-SX Transceiver

transmit at 850 nm wavelength, and accept the multimode fiber-optic
cables for Gigabit-SX described on the next page.

■ The ports on the Gigabit-LX Module and Gigabit-LX Transceiver

transmit at 1300 nm wavelength, and accept the single mode or multimode
fiber-optic cables for Gigabit-LX described on the next page.

B-1

Connectors and Cables

Connectors and Cables

Cables

Twisted-Pair

10 Mbps Operation Category 3, 4, or 5 100-ohm unshielded twisted-pair (UTP)

or shielded twisted-pair (STP) cable, complying with IEEE

802.3 Type 10Base-T specifications, fitted with RJ-45
connectors

100 Mbps Operation Category 5 100-ohm UTP or STP cable, complying with

IEEE 802.3u 100Base-TX specifications, fitted with RJ-45
connectors

Fiber-Optic

10Base-FL 62.5/125 µm or 50/125 µm (core/cladding) diameter, graded-

index, multimode fiber-optic cables, complying with the
ITU-T G.651 and ISO/IEC 793-2 Type A1b or A1a respec­tively, fitted with ST connectors

100Base-FX 62.5/125 µm or 50/125 µm (core/cladding) diameter, graded-

index, multimode fiber-optic cables, complying with the
ITU-T G.651 and ISO/IEC 793-2 Type A1b or A1a respec­tively, fitted with SC connectors

Gigabit-SX 62.5/125 µm or 50/125 µm (core/cladding) diameter, graded-

index, multimode fiber-optic cables, complying with the
ITU-T G.651 and ISO/IEC 793-2 Type A1b or A1a respec­tively, fitted with SC connectors

Gigabit-LX single mode fiber-optic cables, complying with the ITU-T

G.652 and ISO/IEC 793-2 Type B1 standards, fitted with SC
connectors

OR

62.5/125 µm or 50/125 µm (core/cladding) diameter, graded­index, multimode fiber-optic cables, complying with the
ITU-T G.651 and ISO/IEC 793-2 Type A1b or A1a respec­tively, fitted with SC connectors

Note: Multimode fiber-optic cabling may be used for a
Gigabit-LX application, but a mode conditioning patch
cord may be needed. See the Installation Guide that came
with your module for more information.

B-2

Connectors and Cables

Twisted-Pair Cable/Connector Pin-Outs

Twisted-Pair Cable/Connector Pin-Outs

The RJ-45 connectors on the 10/100Base-TX ports on the Switch 1600M and
2424M are all wired as MDI-X ports. The type of twisted-pair cable you connect

to these ports (either “straight through” or “crossover”) depends on the type
of device at the other end of the cable.

The rule is, when connecting same-type ports together (for example MDI­X-to-MDI-X), use crossover cable; when connecting opposite-type ports
together (for example MDI-X-to-MDI), use straight-through cable.

These additional rules apply:

■ All twisted-pair wires used for 10 Mbps and 100 Mbps operation must be

twisted through the entire length of the cable. The wiring sequence must
conform to EIA/TIA 568-B (not USOC). See “Twisted-Pair Cable Pin
Assignments” later in this appendix for a listing of the signals used on each
pin.

■ For 10 Mbps connections to the ports, you can use Category 3, 4, or 5

unshielded twisted-pair cable, as supported by the IEEE 802.3 Type
10Base-T standard.

■ For 100 Mbps connections to the ports, use 100-ohm Category 5 UTP or

STP cable only, as supported by the IEEE 802.3u Type 100Base-TX stan­dard.

Connectors and Cables

B-3

Connectors and Cables

Connectors and Cables

Twisted-Pair Cable/Connector Pin-Outs

Twisted-Pair Cable for Switch (MDI-X) to
Computer (MDI) 10 Mbps or 100 Mbps Network
Connection

To connect PCs or other MDI network devices to the switch 10 Mbps or 100
Mbps MDI-X ports, use a “straight-through” cable.

Connector “A” Connector “B”

Straight-Through Cable

white/orange

orange/white

white/green

green/white

Note Pins 1 and 2 on connector “A” must be wired as a twisted pair to pins 1 and 2

on connector “B”.
Pins 3 and 6 on connector “A” must be wired as a twisted pair to pins 3 and 6
on connector “B”.

Pins 4, 5, 7, and 8 are not used in this application, although they may be wired
in the cable.

.

B-4

Connectors and Cables

Twisted-Pair Cable/Connector Pin-Outs

Twisted-Pair Cable for Switch (MDI-X) to
Hub or Switch (MDI-X) 10 Mbps or 100 Mbps Network
Connection

To connect hubs or switches or other MDI-X network devices to the switch 10
Mbps or 100 Mbps MDI-X ports, use a “crossover” cable.

Connector “A”

Crossover Cable

white/orange

orange/white

white/green

green/white

Connector “B”

Connectors and Cables

Note Pins 1 and 2 on connector “A” must be wired as a twisted pair to pins 3 and 6

on connector “B”.
Pins 3 and 6 on connector “A” must be wired as a twisted pair to pins 1 and 2
on connector “B”.

Pins 4, 5, 7, and 8 are not used in this application, although they may be wired
in the cable.

.

B-5

Connectors and Cables

Twisted-Pair Cable/Connector Pin-Outs

Twisted-Pair Cable Pin Assignments for 10 Mbps or 100
Mbps Operation

Twisted-Pair Straight-Through Cable

Switch End (MDI-X) Computer, Transceiver, or

Other MDI Port End

Connectors and Cables

Signal Pins Pins Signal

receive +
receive ­transmit +
transmit -

1
2
3
6

1
2
3
6

transmit +
transmit ­receive +
receive -

Twisted-Pair Cross-Over Cable

Switch End (MDI-X) Hub or Switch Port, or Other

MDI-X Port End

Signal Pins Pins Signal

receive +
receive ­transmit +
transmit -

1
2
3
6

6
3
2
1

transmit ­transmit +
receive ­receive +

B-6

Safety and EMC Regulatory Statements

!

Safety Information

Documentation reference symbol. If the product is marked with this
symbol, refer to the product documentation to get more information
about the product.

WARNING A WARNING in the manual denotes a hazard that can cause injury

or death.

CAUTION A CAUTION in the manual denotes a hazard that can damage

equipment.

Do not proceed beyond a WARNING or CAUTION notice until you
have understood the hazardous conditions and have taken appro­priate steps.

C

Safety and EMC Regulatory

Statements

Grounding

These are safety class I products and have protective earthing terminals. There
must be an uninterruptible safety earth ground from the main power source
to the product’s input wiring terminals, power cord, or supplied power cord
set. Whenever it is likely that the protection has been impaired, disconnect
the power cord until the ground has been restored.

For LAN cable grounding:

■ If your LAN covers an area served by more than one power distribu-

tion system, be sure their safety grounds are securely interconnected.

■ LAN cables may occasionally be subject to hazardous transient volt-

ages (such as lightning or disturbances in the electrical utilities power
grid). Handle exposed metal components of the network with caution.

Servicing

There are no user-serviceable parts inside these products. Any servicing,
adjustment, maintenance, or repair must be performed only by service-trained
personnel.

These products do not have a power switch; they are powered on when the
power cord is plugged in.

C-1

Safety and EMC Regulatory Statements

!

Informations concernant la sécurité

Informations concernant la sécurité

Symbole de référence à la documentation. Si le produit est marqué de
ce symbole, reportez-vous à la documentation du produit afin d'obtenir
des informations plus détaillées.

WARNING Dans la documentation, un WARNING indique un danger susceptible

d'entraîner des dommages corporels ou la mort.

CAUTION Un texte de mise en garde intitulé CAUTION indique un danger suscep-

tible de causer des dommages à l'équipement.

Ne continuez pas au-delà d'une rubrique WARNING ou CAUTION avant
d'avoir bien compris les conditions présentant un danger et pris les
mesures appropriées.

Cet appareil est un produit de classe I et possède une borne de mise à la terre. La source

Statements

Safety and EMC Regulatory

d'alimentation principale doit être munie d'une prise de terre de sécurité installée aux
bornes du câblage d'entrée, sur le cordon d'alimentation ou le cordon de raccordement
fourni avec le produit. Lorsque cette protection semble avoir été endommagée,
débrancher le cordon d'alimentation jusqu'à ce que la mise à la terre ait été réparée.

Mise à la terre du câble de réseau local:

■ si votre réseau local s'étend sur une zone desservie par plus d'un système de

distribution de puissance, assurez-vous que les prises de terre de sécurité
soient convenablement interconnectées.

■ Les câbles de réseaux locaux peuvent occasionnellement être soumis à des

surtensions transitoires dangereuses (telles que la foudre ou des perturba­tions dans le réseau d'alimentation public). Manipulez les composants
métalliques du réseau avec précautions.

Aucune pièce contenue à l'intérieur de ce produit ne peut être réparée par l'utilisateur.
Tout dépannage, réglage, entretien ou réparation devra être confié exclusivement à un
personnel qualifié.

Cet appareil ne comporte pas de commutateur principal ; la mise sous tension est
effectuée par branchement du cordon d'alimentation.

C-2

Safety and EMC Regulatory Statements

!

Hinweise zur Sicherheit

Hinweise zur Sicherheit

Symbol für Dokumentationsverweis. Wenn das Produkt mit diesem
Symbol markiert ist, schlagen Sie bitte in der Produktdokumentation
nach, um mehr Informationen über das Produkt zu erhalten.

WARNING Eine WARNING in der Dokumentation symbolisiert eine Gefahr, die

Verletzungen oder sogar Todesfälle verursachen kann.

CAUTION CAUTION in der Dokumentation symbolisiert eine Gefahr, die dis

Gerät beschädigen kann.

Fahren Sie nach dem Hinweis WARNING oder CAUTION erst fort,
nachdem Sie den Gefahrenzustand verstanden und die entsprech­enden Maßnahmen ergriffen haben.

Dies ist ein Gerät der Sicherheitsklasse I und verfügt über einen schützenden Erdung­sterminal. Der Betrieb des Geräts erfordert eine ununterbrochene Sicherheitserdung
von der Hauptstromquelle zu den Geräteingabeterminals, den Netzkabeln oder dem
mit Strom belieferten Netzkabelsatz voraus. Sobald Grund zur Annahme besteht, daß
der Schutz beeinträchtigt worden ist, das Netzkabel aus der Wandsteckdose herausz­iehen, bis die Erdung wiederhergestellt ist.

Safety and EMC Regulatory

Statements

Für LAN-Kabelerdung:

■ Wenn Ihr LAN ein Gebiet umfaßt, das von mehr als einem Stromverteilungs-

system beliefert wird, müssen Sie sich vergewissern, daß die
Sicherheitserdungen fest untereinander verbunden sind.

■ LAN-Kabel können gelegentlich gefährlichen Übergangsspannungen aus-

gesetzt werden (beispielsweise durch Blitz oder Störungen in dem
Starkstromnetz des Elektrizitätswerks). Bei der Handhabung exponierter
Metallbestandteile des Netzwerkes Vorsicht walten lassen.

Dieses Gerät enthält innen keine durch den Benutzer zu wartenden Teile. Wartungs-,
Anpassungs-, Instandhaltungs- oder Reparaturarbeiten dürfen nur von geschultem
Bedienungspersonal durchgeführt werden.

Dieses Gerät hat keinen Netzschalter; es wird beim Anschließen des Netzkabels
eingeschaltet.

C-3

Safety and EMC Regulatory Statements

!

Considerazioni sulla sicurezza

Considerazioni sulla sicurezza

Simbolo di riferimento alla documentazione. Se il prodotto è contras­segnato da questo simbolo, fare riferimento alla documentazione sul
prodotto per ulteriori informazioni su di esso.

WARNING La dicitura WARNINGdenota un pericolo che può causare lesioni o

morte.

CAUTION La dicituraCAUTION denota un pericolo che può danneggiare le

attrezzature.

Non procedere oltre un avviso di WARNING o di CAUTIONprima di
aver compreso le condizioni di rischio e aver provveduto alle misure
del caso.

Questo prodotto è omologato nella classe di sicurezza I ed ha un terminale protettivo

Statements

Safety and EMC Regulatory

di collegamento a terra. Dev'essere installato un collegamento a terra di sicurezza, non
interrompibile che vada dalla fonte d'alimentazione principale ai terminali d'entrata,
al cavo d'alimentazione oppure al set cavo d'alimentazione fornito con il prodotto.
Ogniqualvolta vi sia probabilità di danneggiamento della protezione, disinserite il cavo
d'alimentazione fino a quando il collegaento a terra non sia stato ripristinato.

Per la messa a terra dei cavi LAN:

■ se la vostra LAN copre un'area servita da più di un sistema di distribuzione

elettrica, accertatevi che i collegamenti a terra di sicurezza siano ben collegati
fra loro;

■ i cavi LAN possono occasionalmente andare soggetti a pericolose tensioni

transitorie (ad esempio, provocate da lampi o disturbi nella griglia d'alimen­tazione della società elettrica); siate cauti nel toccare parti esposte in metallo
della rete.

Nessun componente di questo prodotto può essere riparato dall'utente. Qualsiasi
lavoro di riparazione, messa a punto, manutenzione o assistenza va effettuato esclusi­vamente da personale specializzato.

Questo apparato non possiede un commutatore principale; si mette scotto tensione
all'inserirsi il cavo d'alimentazione.

C-4

Safety and EMC Regulatory Statements

!

Consideraciones sobre seguridad

Consideraciones sobre seguridad

Símbolo de referencia a la documentación. Si el producto va
marcado con este símbolo, consultar la documentación del
producto a fin de obtener mayor información sobre el producto.

WARNING Una WARNING en la documentación señala un riesgo que podría

resultar en lesiones o la muerte.

CAUTION Una CAUTION en la documentación señala un riesgo que podría

resultar en averías al equipo.

No proseguir des pués de un símbolo de WARNING o CAUTION hasta
no haber entendido las condiciones peligrosas y haber tomado las
medidas apropiadas.

Este aparato se enmarca dentro de la clase I de seguridad y se encuentra protegido por
una borna de puesta a tierra. Es preciso que exista una puesta a tierra continua desde

la toma de alimentación eléctrica hasta las bornas de los cables de entrada del aparato,
el cable de alimentación o el juego de cable de alimentación suministrado. Si existe la
probabilidad de que la protección a tierra haya sufrido desperfectos, desenchufar el
cable de alimentación hasta haberse subsanado el problema.

Safety and EMC Regulatory

Statements

Puesta a tierra del cable de la red local (LAN):

■ Si la LAN abarca un área cuyo suministro eléctrico proviene de más de una

red de distribución de electricidad, cerciorarse de que las puestas a tierra
estén conectadas entre sí de modo seguro.

■ Es posible que los cables de la LAN se vean sometidos de vez en cuando a

voltajes momentáneos que entrañen peligro (rayos o alteraciones en la red
de energía eléctrica). Manejar con precaución los componentes de metal de
la LAN que estén al descubierto.

Este aparato no contiene pieza alguna susceptible de reparación por parte del usuario.
Todas las reparaciones, ajustes o servicio de mantenimiento debe realizarlos sola­mente el técnico.

Este producto no tiene interruptor de potencia; se activa cuando se enchufa el cable
de alimentación.

C-5

Safety and EMC Regulatory Statements

Safety Information (Japan)

Safety Information (Japan)

Statements

Safety and EMC Regulatory

C-6

Safety and EMC Regulatory Statements

Safety Information (China)

Safety Information (China)

Safety and EMC Regulatory

Statements

C-7

Safety and EMC Regulatory Statements

EMC Regulatory Statements

EMC Regulatory Statements

U.S.A.

FCC Class A

This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against interference when the
equipment is operated in a commercial environment. This equipment gener­ates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause interference to
radio communications. Operation of this equipment in a residential area may
cause interference in which case the user will be required to correct the
interference at his own expense.

Statements

Canada

Safety and EMC Regulatory

This product complies with Class A Canadian EMC requirements.

Australia/New Zealand

This product complies with Australia/New Zealand EMC Class A
requirements.

Japan

VCCI Class A

C-8

Korea

Taiwan

Safety and EMC Regulatory Statements

EMC Regulatory Statements

Safety and EMC Regulatory

Statements

C-9

Safety and EMC Regulatory Statements

EMC Regulatory Statements

European Community

Statements

Safety and EMC Regulatory

C-10

Index

Numerics

10/100Base-TX ports

location on switch … 1-2
100 LED … 1-3
100Base-FX

connections, length limitations … 2-4

ports, cables used with … 2-4, B-2
100Base-TX

connections, length limitations … 2-4

ports, cables used with … 2-4
10Base-FL

connections, length limitations … 2-4

ports, cables used with … 2-4, B-2
10Base-T

connections, length limitations … 2-4

ports, cables used with … 2-4

A

Act LED … 1-3
address learning … 1-8
address table

automatic address learning … 1-8

filtering out traffic … 1-8

flooding traffic … 1-8

forwarding traffic … 1-8

moves and changes … 1-8

operation … 1-8

B

back of switch

description … 1-6

power connector … 1-6
backbone switch

topology with … 2-19
bandwidth, how switch enhances … 1-9
basic troubleshooting tips … 3-2
Bootp

for in-band access … 2-15
buttons

Clear button … 1-5

Mode Select button … 1-4

Reset button … 1-5

C

cabinet

mounting the switch in … 2-10

cables

100Base-FX

connections … 2-4

fiber-optic cable specifications … B-2
100Base-TX connections … 2-4
10Base-FL

connections … 2-4

fiber-optic cable specifications … B-2
10Base-T connections … 2-4
connecting cables to switch ports … 2-14
effects of non-standard cables … 3-2
fiber-optic, specifications … B-2
Gigabit-LX

connections … 2-4

fiber-optic cable specifications … B-2
Gigabit-SX

connections … 2-4

fiber-optic cable specifications … B-2
incorrect network connections … 3-2
infrastructure requirements … 2-4
length limitations … 2-4
required types … 2-4
serial, for direct console connection … 2-16
twisted-pair connector pin-outs … B-3
twisted-pair, specifications … B-2

cables, twisted pair

category 3, 4, 5 … B-3
cross-over cable pin-out … B-6
MDI-X to MDI connections … B-4
MDI-X to MDI-X connections … B-5
pin-outs … B-6
straight-through cable pin-out … B-6
switch-to-computer connection … B-4
switch-to-switch or hub connection … B-5

cabling infrastructure … 2-4

Index

Index – 1

Clear button

deleting passwords … 1-5
description … 1-5
location on switch … 1-2, 1-5
restoring factory default configuration … 1-5,

3-10

configuration

restoring factory defaults … 1-5, 3-10
connecting the switch to a power source … 2-13
connector specifications … A-2
console

checking messages during

troubleshooting … 3-8
displaying the Main menu … 2-16
features … 2-15
how to connect in-band … 2-15
how to connect out-of-band … 2-15
serial cable connection … 2-16
telnet access … 2-16
terminal configuration … 2-15

console port

description … 1-5
location on switch … 1-2, 1-5

cross-over cable

pin-out … B-6

D

deleting passwords … 1-5
description

back of switch … 1-6

Index

front of switch … 1-2
LEDs … 1-3
switch … 1-1

desktop switch

sample topology … 2-17

DHCP

for in-band access … 2-15

diagnostic tests … 3-8

checking the console messages … 3-8
checking the LEDs … 3-8
end-to-end connectivity … 3-10
testing the switch only … 3-8
testing twisted-pair cabling … 3-9

E

electrical specifications, switch … A-1
EMC regulatory statements … C-8
environmental specifications, switch … A-1

F

factory default configuration, restoring … 1-5, 3-10
Fan Status LED … 1-3
Fault LED … 1-3

behavior during self test … 2-9
behaviors … 1-3
flashing definition … 1-3
location on switch … 1-2

showing error conditions … 3-4
Fdx LED … 1-3
features

console … 2-15

Switch 1600M and 2400M … 1-7
fiber-optic cables … B-2

100Base-FX … B-2

10Base-FL … B-2

Gigabit-LX … B-2

Gigabit-SX … B-2
filtering out traffic … 1-8
flashing LEDs

error indications … 3-4
flooding traffic … 1-8
forwarding traffic … 1-8
front of switch

10/100Base-TX ports … 1-2

Clear button … 1-5

console port … 1-5

description … 1-2

LEDs … 1-3

Mode Select button and LEDs … 1-4

network ports … 1-2

Reset button … 1-5

slot for switch modules … 1-2

G

Gigabit-LX

connections, length limitations … 2-4

ports, cables used with … 2-4, B-2
Gigabit-SX

connections, length limitations … 2-4

ports, cables used with … 2-4, B-2

2 – Index

H

horizontal surface, mounting switch on … 2-12
hot swapping

resetting the switch for new module type … 2-20
switch modules … 2-20

I

in-band console access

types of … 2-15
included parts … 2-1
incorrect network connections … 3-2
installation

connecting the switch to a power source … 2-13

horizontal surface mounting … 2-12

network cable requirements … 2-4

optional modules … 2-6

precautions … 2-3

rack or cabinet mounting … 2-10

site preparation … 2-4

summary of steps … 2-2

Switch 1600M and 2400M … 2-1

wall mounting … 2-13

L

LEDs

10/100Base-TX ports … 1-4

100 … 1-3

Act … 1-3

behavior during self test … 2-9

checking during troubleshooting … 3-8

descriptions of … 1-3

error indications … 3-4

Fan Status … 1-3

Fault … 1-3

behavior during self test … 2-9

showing error conditions … 3-4
Fdx … 1-3
flashing definition … 1-3
Link … 1-4
location on switch … 1-2
Mode

description … 1-4

selecting the display … 1-4
mode select indicators … 1-3
Module Status … 1-3
on switch … 1-3
on switch modules … 1-4
Power … 1-3

behavior during self test … 2-9
Self Test … 1-3

behavior during self test … 2-9

length limitations

100Base-FX connections … 2-4
100Base-TX connections … 2-4
10Base-FL connections … 2-4
10Base-T connections … 2-4
Gigabit-LX connections … 2-4
Gigabit-SX connections … 2-4

Link LEDs … 1-4
link test … 3-9

M

Main menu, console

displaying … 2-16

MDI-X to MDI network cable … B-4
MDI-X to MDI-X network cable … B-5
Mode LEDs

description … 1-4
selecting the display … 1-4

Mode Select

button … 1-4
indicator LEDs … 1-3–1-4

Module Status LED … 1-3
modules

switch modules

hot swapping … 2-20

installing … 2-6

LEDs … 1-4

mounting the switch

in a rack or cabinet … 2-10

precautions … 2-3
on a horizontal surface … 2-12
on a wall … 2-13

precautions … 2-13

moves and changes

effect on address table … 1-8

Index

Index – 3

N

network cables

100Base-FX connections … 2-4
100Base-TX connections … 2-4
10Base-FL connections … 2-4
10Base-T connections … 2-4
fiber-optic, specifications … B-2
Gigabit-LX connections … 2-4
Gigabit-SX connections … 2-4
incorrect connections … 3-2
required types … 2-4
twisted-pair connector pin-outs … B-3
twisted-pair, specifications … B-2

network devices

connecting to the switch … 2-14

network ports

connecting to … 2-14
LEDs for … 1-4
location on switch … 1-2
standards compliance … A-2
types of … 1-2, 2-4

non-standard network cables, effects … 3-2

O

out-of-band console access … 2-16

power source

connecting the switch to … 2-13

precautions

mounting the switch … 2-3
power requirements … 2-3

preparing the installation site … 2-4
Proactive Network tools

diagnostics with … 3-7

R

rack

mounting precautions … 2-3
mounting the switch in … 2-10

rebooting the switch

to initialize new module type … 2-6

regulatory statements … C-8
Reset button

description … 1-5
location on switch … 1-2, 1-5
restoring factory default configuration … 3-10

resetting the switch

factory default reset … 3-10
for module hot swap … 2-20
location of Reset button … 1-5
troubleshooting procedure … 3-8

P

parts, included with the switch … 2-1

Index

passwords, deleting … 1-5
physical specifications, switch … A-1
Ping test … 3-9
pin-outs

twisted-pair cables … B-3

port LEDs

Link … 1-4
Mode … 1-4

ports

10/100Base-TX, location on switch … 1-2
connecting to … 2-14
console … 1-5, 2-15

network connections … 2-14
power connector … 1-6
Power LED … 1-3

behavior during self test … 2-9

behaviors … 1-3

location on switch … 1-2

S

safety and regulatory statements … C-1
safety specifications … A-2
segment switch

sample topology … 2-18
selecting the Mode LED display … 1-4
self test

Fault LED behavior … 2-9

LED behavior during … 2-9

Power LED behavior … 2-9
Self Test LED … 1-3

behavior during factory default reset … 3-10

behavior during self test … 2-9
serial cable

for direct console connection … 2-16
slot for switch module

location on Switch 1600M … 1-2

location on Switch 2424M … 1-6

4 – Index

specifications

connectors … A-2
electrical … A-1
environmental … A-1
physical … A-1
safety … A-2

straight-through cable

pin-out … B-6

summary

of cables used with the switch … 2-4
of switch installation … 2-2

switch

connecting to a power source … 2-13
description … 1-1
electrical specifications … A-1
environmental specifications … A-1
features … 1-7
front panel description … 1-2
included parts … 2-1
LED descriptions … 1-3
mounting in a rack or cabinet … 2-10
mounting on a wall … 2-13
mounting on horizontal surface … 2-12
operation … 1-8
physical specifications … A-1

switch modules

booting the switch to initialize new module

type … 2-6
hot swapping … 2-20
installing … 2-6
LEDs description … 1-4
slot, location on Switch 1600M … 1-2
slot, location on Switch 2424M … 1-6

switch operation

address table … 1-8
description … 1-8
effect of VLANs … 1-9
filtering out traffic … 1-8
flooding traffic … 1-8
forwarding traffic … 1-8
network moves and changes … 1-8
simultaneous network communications … 1-9
verifying after installation … 2-8

T

telnet access to the console … 2-16
terminal configuration … 2-15
testing

checking the console messages … 3-8
checking the LEDs … 3-8
diagnostic tests … 3-8
end-to-end communications … 3-10
link test … 3-9
Ping test … 3-9
switch operation … 3-8
switch-to-device communications … 3-9

twisted-pair cabling … 3-9
tips for troubleshooting … 3-2
topologies

effects of improper topology … 3-2

samples of … 2-17
troubleshooting … 3-1

basic tips … 3-2

checking the console messages … 3-8

checking the LEDs … 3-8

common network problems … 3-2

diagnostic tests … 3-8

effects of improper topology … 3-2

effects of non-standard cables … 3-2

incorrect network connections … 3-2

link test … 3-9

Ping test … 3-9

Proactive Network tools … 3-7

restoring factory default configuration … 3-10

testing connections to other devices … 3-9

testing end-to-end communications … 3-10

testing the switch … 3-8

testing the twisted-pair cables … 3-9
twisted-pair cable

cross-over cable pin-out … B-6

pin-outs … B-3, B-6

straight-through cable pin-out … B-6

switch-to-computer connection … B-4

switch-to-switch or hub connection … B-5

testing … 3-9
twisted-pair cables … B-2

Index

Index – 5

V

VLAN

effect on basic switch operation … 1-9

VT-100 terminal

serial cable connection for … 2-16

W

wall

mounting switch on … 2-13

Index

6 – Index

Technical information in this document
is subject to change without notice.

©Copyright Hewlett-Packard Company

1998. All rights reserved. Reproduction,
adaptation, or translation without prior
written permission is prohibited except
as allowed under the copyright laws.

Printed in Singapore 12/98

Manual Part Number
5967-9953

*5967-9953*