HP J4897A, Procurve 2708, J4898A, Procurve 2724 Installation Manual

installation guide

hp procurve

series 2700 switches

www.hp.com/go/hpprocurve

z3.book Page i Friday, November 1, 2002 5:40 PM

HP Procurve
Series 2700 Switches

Installation Guide

z3.book Page ii Friday, November 1, 2002 5:40 PM

© Copyright 2002 Hewlett-Packard Company
All Rights Reserved.

This document contains information which is protected by
copyright. Reproduction, adaptation, or translation without
prior permission is prohibited, except as allowed under the
copyright laws.

Publication Number

5990-3055
October 2002

Applicable Products

HP Procurve Switch 2708 (HP J4898A)
HP Procurve Switch 2724 (HP J4897A)

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.

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

Safety

Before installing and operating this product, please read the
“Installation Precautions” in chapter 2, “Installing the Series
2700 Switches”, and the safety statements in appendix C,
“Safety and EMC Regulatory Statements”.

z3.book Page iii Friday, November 1, 2002 5:40 PM

Contents

1 Introducing the HP Procurve Series 2700 Switches

Front of the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Back of the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

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

Reset Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

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

Mode LED View Button and Indicator LEDs . . . . . . . . . . . . . . . . . . . . . 1-4

Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Switch Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

Address Table Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

2 Installing the Series 2700 Switches

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

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

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

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

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

2. Verify the Switch Operates Correctly . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

LED Behavior: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

3. Mount the Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Rack or Cabinet Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

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

4. Connect the Switch to a Power Source . . . . . . . . . . . . . . . . . . . . . . 2-12

5. Connect the Network Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Using the RJ-45 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Example Network Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

As a Desktop Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14

iii

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3 Troubleshooting

Basic Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

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

Hardware Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

HP Customer Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

A Specifications

Testing the Switch by Resetting It . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Checking the Switch LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Testing Twisted-Pair Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Testing End-to-End Network Communications . . . . . . . . . . . . . . . . . . 3-5

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

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

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

Acoustic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

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

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

B Switch Ports and Network Cables

Switch Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

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

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

Straight-Through Twisted-Pair Cable for

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

Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Crossover Twisted-Pair Cable for

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

Cable Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Straight-Through Twisted-Pair Cable for

1000 Mbps Network Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

Cable Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

iv

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C Safety and EMC Regulatory Statements

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

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

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index-1

v

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z3.book Page 1 Friday, November 1, 2002 5:40 PM

Introducing the HP Procurve Series 2700
Switches

The HP Procurve Series 2700 Switches 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 2708 (HP J4898A)

1

Introducing the HP Procurve

Series 2700 Switches

hp procurve
switch

2708

Power

J4898A

Fault

Reset

Spd mode:

off = 10 Mbps
flash = 100 Mbps
on = 1000 Mbps

Act FDx

Mode LED View

Spd

HP Procurve Switch 2724 (HP J4897A)

hp procurve
switch 2724

Power

J4897A

Fault

Reset Mode LED View

Spd mode:

off = 10 Mbps
flash = 100 Mbps
on = 1000 Mbps

Act FDx

1

Link

Mode

7

Spd

Link

Mode

Throughout this manual, these switches will be abbreviated as the Switch 2708
and the Switch 2724 respectively.

The Switch 2708 has 8 auto-sensing 10/100/1000Base-T RJ-45 ports. The Switch
2724 has 24 auto-sensing 10/100/1000Base-T RJ-45 ports.

These switches are designed to be used primarily to provide Gigabit/second
network speed to the desktop. You can also directly connect servers and
peripherals to these switches and connect them to a network backbone or to
other switches, hubs, or routers.

Link

Mode

2

3456

8

9

1

10 11 12

10/100/1000Base-T Ports

1

13

19

2

2

182417231622152114

10/100/1000Base-T Ports

20

(all ports are IEEE Auto MDI/MDI-X)

3

3

(all ports are IEEE Auto MDI/MDI-X)

4

4

2345 6 131415161718

1

789101112 192021222324

5

5

6

6

7

7

8

8

This chapter describes your HP Series 2700 Switches including:

■ Front and back of the switches

■ Features

■ Switch operation overview

1-1

z3.book Page 2 Friday, November 1, 2002 5:40 PM

Introducing the HP Procurve Series 2700 Switches

Front of the Switch

Front of the Switch

hp procurve

2708

switch

J4898A

hp procurve
switch 2724

J4897A

Fault

LED

Spd mode:

off = 10 Mbps
flash = 100 Mbps
on = 1000 Mbps

Reset

Reset Mode LED View

Mode LED View

Spd mode:

off = 10 Mbps
flash = 100 Mbps
on = 1000 Mbps

Act FDx

Act FDx

Spd

Mode

Mode LED View button

and indicator LEDs

1

3456

2

Link

Mode

7

8

9

Spd

Link

Mode

Link

1

10 11 12

10/100/1000Base-T RJ-45 ports

10/100/1000Base-T Ports

1

2

2

3

3

(all ports are IEEE Auto MDI/MDI-X)

4

4

5

5

6

6

7

7

8

8

Link and Mode LEDs

for each port

2345 6 131415161718

1

182417231622152114

13

20

19

10/100/1000Base-T Ports

(all ports are IEEE Auto MDI/MDI-X)

789101112 192021222324

Power

LED

Series 2700 Switches

Introducing the HP Procurve

Power

Fault

Reset button

Power

Fault

10/100/1000Base-T RJ-45 ports

All 10/100/1000Base-T RJ-45 ports have the

IEEE 802.3ab “Auto MDI/MDI-X” feature

1-2

Network Ports

8 auto-sensing 10/100/1000Base-T RJ-45 ports

All these ports have the IEEE 802.3ab “Auto MDI/MDI-X” feature, which
means that you can use either straight-through or crossover twisted-pair
cables to connect any network devices to the switch.

Reset Button

This button is used to reset the switch while it is powered on. This action
executes the switch self test.

z3.book Page 3 Friday, November 1, 2002 5:40 PM

Introducing the HP Procurve Series 2700 Switches

Front of the Switch

LEDs

Table 1-1. Switch LEDs

Switch LEDs State Meaning

Power
(green)

Fault
(orange)

Link
(green –
overlaid with
the port
number)

Mode
(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.

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

If on for a prolonged time, the switch has a hardware failure, or has failed its self test.
See chapter 3, “Troubleshooting” for more information.

On Indicates the port is enabled and receiving a link indication from the connected

device.

Off One of these conditions exists:

• no active network cable is connected to the port

• the port is not receiving a link signal

Displays network activity information, or whether the port is configured for full-duplex operation, or
the speed of the connection depending on the mode selected. See “Mode LED View Button and
Indicator LEDs” on the next page for more information.

Introducing the HP Procurve

Series 2700 Switches

Mode LED
View
indicators
(3 green LEDs)

* The flashing behavior is a repeated 1.6 second cycle of two quick flashes followed by an off period.

Act Indicates that the port Mode LEDs are displaying network activity information.

FDx Indicates that the port Mode LEDs are lit for ports that are in Full Duplex Mode.

Spd Indicates that the po rt Mode LEDs are displayi ng the connection speed at which each

port is operating:

• if the port Mode LED is off, the port is operating at 10 Mbps

• if the port Mode LED is flashing*, the port is operating at 100 Mbps

• if the port Mode LED is on continuously, the port is operating at 1000 Mbps

1-3

z3.book Page 4 Friday, November 1, 2002 5:40 PM

Introducing the HP Procurve Series 2700 Switches

Front of the Switch

Mode LED View Button and Indicator LEDs

To optimize the amount of information that can be displayed for each of the
switch ports, the Series 2700 Switches use a Mode LED for each port. The
operation of this LED is controlled by the Mode LED View button, and the
current setting is indicated by the Mode indicator LEDs near the button. Press
the button to change from one mode to the next.

Series 2700 Switches

Introducing the HP Procurve

Mode LED View button

and indicator LEDs

Spd mode:

off = 10 Mbps
flash = 100 Mbps
on = 1000 Mbps

Act FDx

Mode LED View

■ If the Activity (Act) indicator LED is lit, the Mode LED for each port

Spd

Mode LEDs

(one per port)

Link

1

Mode

1

2

2

displays activity information for the port — it flickers as network traffic
is received and transmitted through the port.

■ If the Full Duplex (FDx) indicator LED is lit, the Mode LEDs light for those

ports that are operating in full duplex.

■ If the Speed (Spd) indicator LED is lit, the Mode LEDs behave as follows

to indicate the connection speed for the port:

• Off = 10 Mbps

• Flashing = 100 Mbps (the flashing behavior is a repeated 1.6 sec. cycle
of two quick flashes followed by an off period)

• On = 1000 Mbps

1-4

z3.book Page 5 Friday, November 1, 2002 5:40 PM

Introducing the HP Procurve Series 2700 Switches

Back of the Switch

Back of the Switch

cooling vents - make sure these are not

obstructed for proper switch operation

Line: 50/60 Hz.

100-240 V~ 1.5 A (1, 5 A)

AC power connector

Power Connector

The Series 2700 Switches 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--240 volts and either 50 or 60 Hz. There are
no voltage range settings required.

Introducing the HP Procurve

Series 2700 Switches

1-5

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Introducing the HP Procurve Series 2700 Switches

Features

Series 2700 Switches

Introducing the HP Procurve

Features

The features of the Series 2700 Switches include:

■ 8 or 24 auto-sensing 10/100/1000Base-T RJ-45 ports.

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

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

■ IEEE 802.3ab “Auto MDI/MDI-X” on all twisted-pair ports, meaning that

all connections can be made using straight-through twisted-pair
cables. Cross-over cables are not required, although they will also work.

Complying with the IEEE 802.3ab standard, the pin operation of each port
is automatically adjusted for the attached device: if the switch detects that
another switch or hub is connected to the port, it configures the port as
MDI; if the switch detects that an end-node device is connected to the
port, it configures the port as MDI-X.

■ automatic learning of the hardware addresses in each switch’s address

forwarding table (the Switch 2708 has an 8000-entry table, the Switch 2724
has a 32,000-entry table).

■ automatically negotiated full-duplex operation for the twisted-pair ports

when connected to other auto-negotiating devices.

■ auto-negotiation of flow control for ports operating at full duplex.

1-6

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Switch Operation Overview

Address Table Operation

Address Learning. As devices are connected to the switch ports, either
directly or through hubs or other switches that are connected to the switch,
the MAC addresses of those devices are learned automatically and stored in
the Series 2700 Switch’s address table. The switch also identifies the number
of the port on which each address is learned so it knows the relative 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

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

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

Introducing the HP Procurve Series 2700 Switches

Switch Operation Overview

Introducing the HP Procurve

Series 2700 Switches

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

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 use bandwidth dealing with unnecessary traffic.

on a port, the destination address will not yet be in the switch’s address
table and the Series 2700 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 Series 2700 Switch
automatically recognizes the change and updates 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.

1-7

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z3.book Page 1 Friday, November 1, 2002 5:40 PM

Installing the Series 2700 Switches

The HP Series 2700 Switches are easy to install. They 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 Series 2700 Switches.

2

Installing the Series 2700

Switches

Included Parts

The Series 2700 Switches are shipped with the following components:

■ HP Procurve Series 2700 Switches Installation Guide (5990-3055), this

manual

■ Customer Support/Warranty booklet

■ Accessory kit (5064-2085)

• two mounting brackets

• four 8 mm M4 screws to attach the mounting brackets to the switch

• four 5/8-inch number 12-24 screws to attach the switch to a rack

• four rubber feet

■ Power cord, one of the following:

Australia/New Zealand
China
Continental Europe
Denmark
Japan
Switzerland
United Kingdom/Hong Kong/Singapore
United States/Canada/Mexico

8120-6803
8120-8377
8120-6802
8120-6806
8120-6804
8120-6807
8120-8709
8120-6805

2-1

z3.book Page 2 Friday, November 1, 2002 5:40 PM

Installing the Series 2700 Switches

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. Make sure that the physical environment

2. Verify that the switch passes its self test. This is a simple process of

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.

plugging the switch into a power source and observing that the LEDs on
the switch’s front panel show correct operation. See page 2-6.

Switches

Installing the Series 2700

3. Mount the switch. The Series 2700 Switches can be mounted in a 19-inch
telco rack or equipment cabinet, on a wall, or on a horizontal surface.

4. Connect power to the switch. Once the switch is mounted, plug it in to
the nearby AC power source.

5. Connect the network devices. Using the appropriate network cables,
connect servers, hubs, other switches, routers, and other network devices
to the switch ports.

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

z3.book Page 3 Friday, November 1, 2002 5:40 PM

Installation Precautions:

Follow these precautions when installing your HP Series 2700 Switches.

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

■ For safe operation, do not install the switch with the back face of the

Cautions ■ Make sure that the power source circuits are properly grounded, then

■ If your installation requires a different power cord than the one supplied

■ When installing the switch, note that the AC outlet should be near the

■ Ensure that the switch does not overload the power circuits, wiring,

■ Do not install the switch in an environment where the operating

■ Make sure the air flow around the sides and back of the switch is

Installing the Series 2700 Switches

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.

switch (with the fan vents) facing either downward or upward.

use the power cord supplied with the switch to connect it to the power
source.

with the switch, be sure the cord is adequately sized for the switch’s
current requirements. In addition, 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.

switch and should be easily accessible in case the switch must be
powered off.

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.

ambient temperature might exceed 55

°C (131°F).

not restricted.

Installing the Series 2700

Switches

2-3

z3.book Page 4 Friday, November 1, 2002 5:40 PM

Installing the Series 2700 Switches

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

Cable Type Length Limits

the necessary network specifications. See the following table for cable
types and lengths, and see appendix B, “Switch Ports and Network
Cables” for more information:

Switches

Installing the Series 2700

• 10 Mbps operation:

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

• 100 Mbps operation:

Category 5, 100-ohm differential UTP or
STP

• 1000 Mbps operation:

Category 5E or better, 100-ohm differen­tial UTP or STP

Notes: Since the 10Base-T operation is through 10/100/1000Base-T ports, if you ever want
to upgrade the ports to 100Base-TX, it would be best to cable the ports initially with category
5 cable. For 1000Base-T, category 5E, or better, cable should be used.

The 10/100/1000-Base-T ports on the Switch 2708 include the IEEE 802.3ab
“Auto MDI/MDI-X” feature. This feature allows you to use either straight-through or
crossover twisted-pair cables for connecting to any network devices including end nodes,
such as computers, or to other switches, hubs, and routers.

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

100 meters

100 meters

100 meters

orientation relative to other devices and equipment:

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

the twisted-pair cabling.

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

the power cord and cooling.

• On the sides of the switch, leave at least 3.8 cm (1 1/2 inches) for

cooling.

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2. Verify the Switch Operates Correctly

Before mounting the switch in its network location, you should first check
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

Installing the Series 2700 Switches

Installation Procedures

on the back of the switch, and then into a nearby properly grounded
electrical outlet.

Line: 50/60 Hz.

100-240 V~ 1.5 A (1, 5 A)

Connect power cord to

the power connector

Note The Series 2700 Switches do not have a power switch. They are powered on

when the power cord is connected to the switch and to a power source. For
safety, the power outlet should be located near the switch installation.

The switch automatically adjusts to any voltage between 100-240 volts and
either 50 or 60 Hz. There are no voltage range settings required.

If your switch requires a different power cord than the one supplied with the
switch, please see the Installation Precautions on page 2-3.

2. Check the LEDs on the switch. The LED behavior is described on the next
page.

Installing the Series 2700

Switches

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Installing the Series 2700 Switches

Installation Procedures

hp procurve

switch

2708

J4898A

Power

Fault

Power and Fault LEDs

Reset

switch port LEDs

Spd mode:

off = 10 Mbps
flash = 100 Mbps
on = 1000 Mbps

Act FDx

Mode LED View

1

Link

Spd

1

Mode

2

2

3

3

When the switch is powered on, it performs its diagnostic self test. The
self test takes approximately 6 seconds to complete.

4

Switches

Installing the Series 2700

LED Behavior:

During the self test:

• All the switch and port LEDs are on.

When the self test completes successfully:

•The large Power LED remains on.

•The large Fault LED goes off.

• The Mode LED View Act LED remains on.

• The port LEDs (Link and Mode) 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 LED stays on for more than 10 seconds, the self test has not
completed correctly. Refer to chapter 3, “Troubleshooting” for diagnostic
help.

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3. Mount the Switch

After you have verified that the switch passes its self test, you are ready to
mount the switch in a stable location. The Series 2700 Switches can be
mounted in these ways:

■ in a rack or cabinet

■ on a wall

■ on a horizontal surface

Rack or Cabinet Mounting

Installing the Series 2700 Switches

Installation Procedures

The Series 2700 Switches are designed to be mounted in any EIA-standard
19-inch telco rack or in an equipment cabinet such as a server cabinet. Note
that the mounting brackets have multiple mounting holes and can be rotated
allowing for a wide variety of mounting options.

Warning For safe operation, please read the Installation Precautions on page

2-3 before mounting the switch.

Equipment
Cabinet
Note

The 12-24 screws supplied with the switch are the correct threading for
standard EIA/TIA open 19-inch racks. If you are installing the switch in an
equipment cabinet such as a server cabinet, use the clips and screws that came
with the cabinet in place of the 12-24 screws that are supplied with the switch.

Complete step 1, on the next page. Then, plan which four holes you will be
using in the cabinet and install all four clips and partially install the two bottom
screws, as described in step 2 on the next page. Then proceed to step 3.

Installing the Series 2700

Switches

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Installing the Series 2700 Switches

Installation Procedures

1. Use a #1 Phillips (cross-head) screwdriver and attach the mounting
brackets to the switch with the included 8-mm M4 screws.

Switches

Installing the Series 2700

8 mm

M4 screws

Note Note that the mounting brackets have multiple mounting holes and can be

rotated allowing for a wide variety of mounting options. These include
mounting the switch so that its front face is flush with the face of the rack, or
mounting it in a more balanced position as shown in the illustration.

Note Steps 2, 3, and 4 below describe a convenient method of mounting the switch

in a rack by placing it on two screws that you first install in the rack. You may,
instead, just hold the switch with attached brackets up to the rack and move
it vertically until rack holes line up with the bracket holes and notches, then
insert and tighten the four screws holding the brackets to the rack.

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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 Series 2700 Switches

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 Series 2700

Switches

3. Place the switch in the rack and lower it so the notches in the bottom of

lower switch with mounting

brackets onto the partially

installed screw

the bracket slide onto the screws, then tighten these screws.

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Installing the Series 2700 Switches

Installation Procedures

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

install additional

screw

Tighten these screws.

Switches

Installing the Series 2700

Wall Mounting

You can mount the switch on a wall as shown in the illustrations on the next
page.

Warning For safe operation, do not install the switch with the back face of the switch

(with the fan vents) facing either downward or upward.

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
brackets to the switch with the included 8-mm M4 screws.

2. Attach the switch to the wall or wood surface with 5/8-inch number 12
wood screws (not included).

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For “Bookshelf” Wall Mounting For “Flat” Wall Mounting

Installing the Series 2700 Switches

Installation Procedures

M4 screws

5/8-inch

wood screw

M4 screws

Installing the Series 2700

Switches

5/8-inch

wood screws

second 5/8-inch

wood screw (hidden)

Note that the brackets are attached

on opposite corners. This improves

the stability of the switch on the wall.

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Installing the Series 2700 Switches

Installation Procedures

Horizontal Surface Mounting

Place the switch on a table or other horizontal surface. The switch comes with
rubber feet in the accessory kit that can be used to help keep the switch from
sliding on the surface.

Attach the rubber feet to the four corners on the bottom of the switch within
the embossed angled lines. Use a sturdy surface in an uncluttered area. You
may want to secure the networking cables and switch power cord to the table
leg or other part of the surface structure to help prevent tripping over the
cords.

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

Switches

Installing the Series 2700

4. 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 2-6.

5. 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 RJ-45 ports on the
switch.

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Using the RJ-45 Connectors

To c o n 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.

Installing the Series 2700 Switches

Installation Procedures

RJ-45 connector

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”.

To disconnect:

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

.

100-ohm unshielded or shielded
twisted-pair cable:

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

• Category 5 or better for 100 Mbps
ports

• Category 5E or better for 1000 Mbps
ports

Maximum distance: 100 meters

Installing the Series 2700

Switches

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Installing the Series 2700 Switches

Example Network Topology

Example Network Topology

This section shows you an example network topology in which the Series 2700
Switches are implemented. For more topology information, see the HP
network products World Wide Web site, http://www.hp.com/go/hpprocurve.

As a Desktop Switch

Switches

Installing the Series 2700

Local Server

Switch 2708

category 5E twisted-pair “straight-

through” or “crossover” cable for

1000 Mbps connection to server and

power PCs and peripherals

Power PCs and

peripherals

The Series 2700 Switches are designed to be used primarily as desktop
switches to which end nodes for power users, local servers, and printers and
other peripherals are directly connected, as shown in the above illustration.
Notice that the end node devices are connected to the switch by “straight­through” or “crossover” twisted-pair cables. Either cable type can be used
because of the IEEE Auto MDI/MDI-X feature on the Series 2700 Switches.

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Troubleshooting

This chapter describes how to troubleshoot your Series 2700 Switch including
the following:

■ basic troubleshooting tips (page 3-1)

■ diagnosing with the LEDs (page 3-3)

■ hardware diagnostic tests (page 3-4)

■ HP Customer Support Services (page 3-5)

3

Basic Troubleshooting Tips

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

■ Connecting the RJ-45 ports to devices that have a fixed full-duplex

configuration. The Series 2700 Switch RJ-45 ports are configured as
“Auto”. That is, when connecting to attached devices, the switch will
operate in one of two ways to determine the link speed and the commu­nication mode (half duplex or full duplex):

• if the connected device is also configured to Auto, the switch will

automatically negotiate both link speed and communication mode

• if the connected device has a fixed configuration, for example 100

Mbps, at half or full duplex, the switch will automatically sense the
link speed, but will default to a communication of half duplex

Because the Series 2700 Switches behave in this way (in compliance with
the IEEE 802.3 standard), if a device connected to the switch RJ-45 ports
has a fixed configuration at full duplex, the device will not connect
correctly to the switch. The result will be high error rates and very
inefficient communications between the switch and the device.

Make sure that all devices connected to the Series 2700 Switches’ RJ-45
ports are configured to auto negotiate, or are configured to connect at half
duplex (all hubs are configured this way, for example).

Troubleshooting

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Troubleshooting

Basic Troubleshooting Tips

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

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

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

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

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, “Switch Ports and Network Cables” for
pinouts and correct cable wiring. A category 5 cable tester is a recom­mended tool for every 100Base-TX and 1000Base-T network installation.

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. An example topology is shown at the end of
chapter 2 in this book, and some topology configuration guidelines can
be found online at the HP Procurve web site, http://www.hp.com/go/
hpprocurve in the Information Library section.

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.

For more information on possible network problems and their solutions, refer
to the technical note “Troubleshooting LAN Performance and Intermittent
Connectivity Problems”, which can be found on the HP Procurve web site,
http://www.hp.com/go/hpprocurve in the Information Library section.

Troubleshooting

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Diagnosing with the LEDs

Table 3-1 shows LED patterns on the switch 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

Troubleshooting

Diagnosing with the LEDs

LED Pattern Indicating Problems

Power Fault Port Link

Off with power cord

plugged in

On Prolonged On *

On Off Off with cable

* This LED is not important for the diagnosis.

**

connected

Diagnostic Tips:

Tip

Number Problem Solution

➊ The switch is not

plugged into an
active AC power
source, or the
switch’s power
supply may have
failed.

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

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 booklet that came with your switch for more information.

Diagnostic Tips

➊

➋

➌

Troubleshooting

➋ A switch hardware

failure has
occurred during
self test.

Try power cycling the switch. If the fault indication reoccurs, the switch has failed
its self test. Call your HP-authorized LAN dealer, or use the electronic support
services from HP to get assistance. See the Custome r Support/Warranty booklet that
came with your switch for more information.

3-3

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Troubleshooting

Hardware Diagnostic Tests

Tip

Number

Problem Solution

➌ The network

connection is not
working properly.

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.

• Verify the connected device and switch are both powered on and operating
correctly.

• Verify that you are using correctly wired n etwork cables. See appendix B, “Switch
Ports and Network Cables” for cable pinout information. Either “straight-through”
or “crossover” cables can be used because of the switch’s “Auto MDI/MDI-X”
feature.

• Verify that the connected devices comply with the IEEE 802.3ab standard, includ­ing transmission of a link signal. See “Testing Twisted-Pair Cabling” on page 3-5.

• Try the “Testing End-to-End Network Communications” procedures on page 3-5.

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

• If you continue to have problems, call your HP-authorized LAN dealer, or use the
electronic support services from HP to get assistance. See the Customer Support/
Warranty booklet for more information.

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)

Troubleshooting

■ 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 self-test, which could resolve any temporary opera­tional problems.

Checking the Switch LEDs

The self-test passes if the Fault LED on the front of the switch goes off after
approximately 5 seconds. If this LED stays on longer than 10 seconds, an error
condition has been detected on the switch.

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

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Testing Twisted-Pair Cabling

Network cables that fail to provide a link or provide an unreliable link between
the switch and the connected network device may not be compatible with the
IEEE 802.3 10Base-T, 100Base-TX, or 1000Base-T standards. The twisted-pair
cables attached to the Series 2700 Switch must be compatible with the
appropriate standards. To verify that your cable is compatible with these
standards, use a qualified cable test device.

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.

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 Procurve web site, http://www.hp.com/go/hpprocurve 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.

Troubleshooting

3-5

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z3.book Page 1 Friday, November 1, 2002 5:40 PM

Specifications

Physical

Width: 44.3 cm (17.4 in) 44.3 cm (17.4 in)

Depth: 23.7 cm (9.3 in) 23.7 cm (9.3 in)

Height: 4.4 cm (1.7 in) 4.4 cm (1.7 in)

A

Switch 2708 Switch 2724

Weight : 3.1 kg (6.8 lbs) 3.5 kg (7.6 lbs)

Electrical

Each Series 2700 Switch automatically adjusts to any voltage between 100-240
volts and either 50 or 60 Hz.

AC voltage: 100–240 volts

Maximum current: 1.5 A

Frequency range: 50/60 Hz

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

Acoustic

Geräuschemission LwA=48 dB am fiktiven Arbeitsplatz nach DIN 45635 T.19

Noise Emission LwA=48 dB in a virtual workspace according to DIN 45635
T.1 9

A-1

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Specifications

Connectors

The 10/100/1000 Mbps RJ-45 twisted-pair ports are compatible with the
following standards:

■ IEEE 802.3ab 1000Base-T

■ IEEE 802.3u 100Base-TX

■ IEEE 802.3 10Base-T

Safety

The Series 2700 Switches comply with these safety standards:

■ EN60950 / IEC 950

■ CSA 22.2 No. 950 (cUL 1950)

■ NOM-019-SCFI-1994

■ UL 1950 3

rd

Edition

Specifications

A-2

z3.book Page 1 Friday, November 1, 2002 5:40 PM

Switch Ports and Network Cables

This appendix includes switch connector information and network cable
information for cables that should be used with the Series 2700 Switches,
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.

B

Switch Ports and Network

Cables

Switch Ports

The RJ-45 10/100/1000Base-T ports on the switch accept 100-ohm differential
unshielded and shielded twisted-pair cable with RJ-45 connectors as
described next.

Twisted-Pair Cables

10 Mbps Operation Category 3, 4, or 5 100-ohm differential 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 differential UTP or STP cable,

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

1000 Mbps Operation Category 5 100-ohm differential 4-pair UTP or STP cable,

complying with IEEE 802.3ab 1000Base-T specifications,
fitted with RJ-45 connectors—Category 5E or better is
recommended.

(please see “Note on 1000Base-T Cable Requirements”, on
page B-2)

B-1

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Switch Ports and Network Cables

Cables

Switch Ports and Network

Note on 1000Base-T Cable Requirements. The Category 5 networking
cables that work for 100Base-TX connections should also work for
1000Base-T, as long as all four-pairs are connected. But, for the most robust
connections you should use cabling that complies with the Category 5E
specifications, as described in Addendum 5 to the TIA-568-A standard (ANSI/
TIA/EIA-568-A-5).

Because of the increased speed provided by 1000Base-T (Gigabit-T), network
cable quality is more important than for either 10Base-T or 100Base-TX. Site
cabling that is being used to carry 1000Base-T networking must comply with
the IEEE 802.3ab standards. In particular, the cabling must pass tests for
Attenuation, Near-End Crosstalk (NEXT), and Far-End Crosstalk (FEXT).
Additionally, unlike the cables for 100Base-TX, the 1000Base-T cables must
pass tests for Equal-Level Far-End Crosstalk (ELFEXT), Multiple Disturber
ELFEXT, and Return Loss.

When testing your cabling, be sure to include the patch cables that connect
the switch and other end devices to the patch panels on your site. The patch
cables are frequently overlooked when testing cable and they must also
comply with the cabling standards.

B-2

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Twisted-Pair Cable/Connector Pin-Outs

Switch Ports and Network Cables

Twisted-Pair Cable/Connector Pin-Outs

Switch Ports and Network

The IEEE 802.3ab “Auto MDI/MDI-X” Feature: The 10/100/1000Base-T
ports on the Series 2700 Switches all have the “Auto MDI/MDI-X” feature that
is part of the IEEE 802.3ab standard. They automatically detect the type of
port on any device connected to the Series 2700 Switch and then operate as
either an MDI or MDI-X port, whichever is appropriate. If you connect a Series
2700 Switch twisted-pair port to another switch or hub, which typically have
MDI-X ports, the Series 2700 Switch port operates as an MDI port and connects
correctly. If you connect an end node, such as a server or PC which typically
have MDI ports, to the Series 2700 Switch, the switch port operates as an
MDI-X port and connects correctly.

So, for any connection, a “straight-through” twisted-pair cable can be used —
you no longer have to use “crossover” cables. If you do happen to use a
correctly wired crossover cable, though, the switch will still be able to
automatically detect the MDI/MDI-X operation of the connected device and
will link correctly.

Other Wiring Rules:

■ 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 the Pin Assignment tables
below the cable illustrations later in this appendix for a listing of the
signals used on each pin.

■ For 10 Mbps connections to the ports, you can use 100-ohm differential

Category 3, 4, or 5 unshielded (UTP) or shielded (STP) twisted-pair cable,
as supported by the IEEE 802.3 10Base-T standard.

■ For 100 Mbps connections to the ports, use 100-ohm differential Category

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

■ For 1000 Mbps connections, Category 5 or better 100-ohm differential UTP

or STP cable only, as supported by the IEEE 802.3ab 1000Base-T standard;
Category 5E or better is recommended.

Cables

B-3

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Switch Ports and Network Cables

Twisted-Pair Cable/Connector Pin-Outs

Cables

Switch Ports and Network

Straight-Through Twisted-Pair Cable for
10 Mbps or 100 Mbps Network Connections

Because of the Auto MDI/MDI-X operation of the RJ-45 ports on the switch,
when they are operating at either 10 Mbps or 100 Mbps, for all network
connections, you can use “straight-through” cables.

For this feature to operate correctly, the port on the connected device must
also be configured as Auto, not in any fixed configuration such as 100 Mbps/
full duplex.

Cable Diagram

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.

.

Pin Assignments

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

Signal Pins Pins Signal

receive +
receive ­transmit +
transmit -

B-4

Other End

1
2
3
6

1
2
3
6

transmit +
transmit ­receive +
receive -

z3.book Page 5 Friday, November 1, 2002 5:40 PM

Switch Ports and Network Cables

Twisted-Pair Cable/Connector Pin-Outs

Crossover Twisted-Pair Cable for
10 Mbps or 100 Mbps Network Connection

The Auto MDI/MDI-X operation of the RJ-45 ports at 10 Mbps or 100 Mbps also
allows you to use “crossover” cables for all network connections, to PCs,
servers or other end nodes, or to hubs or other switches.

For this feature to operate correctly, the port on the connected device must
also be configured as Auto, not in any fixed configuration such as 100 Mbps/
full duplex.

Cable Diagram.

Connector “A”

Crossover Cable

white/orange

orange/white

white/green

Connector “B”

Switch Ports and Network

Cables

green/white

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.

Pin Assignments

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-5

z3.book Page 6 Friday, November 1, 2002 5:40 PM

Switch Ports and Network Cables

Twisted-Pair Cable/Connector Pin-Outs

Straight-Through Twisted-Pair Cable for
1000 Mbps Network Connections

1000Base-T connections require that all four pairs or wires be connected.

Switch Ports and Network

Cables

Cable Diagram

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 and 5 on connector “A” must be wired as a twisted pair to pins 4

and 5 on connector “B”.

■ Pins 7 and 8 on connector “A” must be wired as a twisted pair to pins 7

and 8 on connector “B”.

.

Pin Assignments

For 1000Base-T operation, all four pairs of wires are used for both transmit
and receive.

B-6

z3.book Page 1 Friday, November 1, 2002 5:40 PM

Safety and EMC Regulatory Statements

Safety Information

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

C

Documentation reference symbol. If the product is marked with this

!

symbol, refer to the product documentation to get more information
about the product.

or death.

Safety and EMC Regulatory

Statements

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.

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

z3.book Page 2 Friday, November 1, 2002 5:40 PM

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

!

WARNING Dans la documentation, un WARNING indique un danger susceptible

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

ce symbole, reportez-vous à la documentation du produit afin d'obtenir
des informations plus détaillées.

d'entraîner des dommages corporels ou la mort.

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

z3.book Page 3 Friday, November 1, 2002 5:40 PM

Hinweise zur Sicherheit

Safety and EMC Regulatory Statements

Hinweise zur Sicherheit

Symbol für Dokumentationsverweis. Wenn das Produkt mit diesem

!

WARNING Eine WARNING in der Dokumentation symbolisiert eine Gefahr, die

CAUTION CAUTION in der Dokumentation symbolisiert eine Gefahr, die dis

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

Verletzungen oder sogar Todesfälle verursachen kann.

Gerät beschädigen kann.

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

Safety and EMC Regulatory

Statements

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.

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

z3.book Page 4 Friday, November 1, 2002 5:40 PM

Safety and EMC Regulatory Statements

Considerazioni sulla sicurezza

Considerazioni sulla sicurezza

Simbolo di riferimento alla documentazione. Se il prodotto è contras-

!

WARNING La dicitura WARNINGdenota un pericolo che può causare lesioni o

CAUTION La dicituraCAUTION denota un pericolo che può danneggiare le

segnato da questo simbolo, fare riferimento alla documentazione sul
prodotto per ulteriori informazioni su di esso.

morte.

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

z3.book Page 5 Friday, November 1, 2002 5:40 PM

Consideraciones sobre seguridad

Safety and EMC Regulatory Statements

Consideraciones sobre seguridad

Símbolo de referencia a la documentación. Si el producto va

!

WARNING Una WARNING en la documentación señala un riesgo que podría

CAUTION Una CAUTION en la documentación señala un riesgo que podría

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

resultar en lesiones o la muerte.

resultar en averías al equipo.

No proseguir después de un símbo lo de WARNING o CAUTION ha sta
no haber entendido las condiciones peligrosas y haber tomado las
medidas apropiadas.

Safety and EMC Regulatory

Statements

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.

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

z3.book Page 6 Friday, November 1, 2002 5:40 PM

Safety and EMC Regulatory Statements

Safety Information (Japan)

Safety Information (Japan)

Statements

Safety and EMC Regulatory

C-6

z3.book Page 7 Friday, November 1, 2002 5:40 PM

Safety Information (China)

Safety and EMC Regulatory Statements

Safety Information (China)

Safety and EMC Regulatory

Statements

C-7

z3.book Page 8 Friday, November 1, 2002 5:40 PM

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

z3.book Page 9 Friday, November 1, 2002 5:40 PM

Korea

Taiwan

Safety and EMC Regulatory Statements

EMC Regulatory Statements

Safety and EMC Regulatory

Statements

C-9

z3.book Page 10 Friday, November 1, 2002 5:40 PM

Safety and EMC Regulatory Statements

EMC Regulatory Statements

European Community

DECLARATION OF CONFORMITY

according to ISO/IEC Guide 22 and EN45014

Manufacturer's Name: Hewlett-Packard Company

Manufacturer's Address: 8000 Foothills Blvd

declares that the products:

Product Names: HP Procurve Switch 2708

Model Numbers: J4898A

Statements

Safety and EMC Regulatory

Accessories: none

Regulatory Model Number: RSVLC-0204

conform to the following Product Specifications:

Safety: EN60950 (1992) +A1,A2,A3,A4,A11 / IEC 950 (1991) +A1,A2,A3,A4

EN60825-1 (1994) +A11 (1996) / IEC 825-1 (1993), Class 1

EMC: EN 55022 (1998) / CISPR-22 (1997) Class A

EN55024 (1998) / CISPR-24 (1997)
EN 61000-3-2 (2000) / IEC 61000-3-2 (2000) Harmonics
EN 61000-3-3 (1995) / IEC 61000-3-3 (1994) Flicker

Supplementary Information:

The products herewith comply with the requirements of the Low Voltage Directive
73/23/EEC and the EMC Directive 89/336/EEC and carry the CE marking accordingly.

Roseville, CA 95747-5502
U.S.A.

HP Procurve Switch 2724

J4897A

Mike Avery,

C-10

Tested with Hewlett-Packard Co. products only.

Roseville, September 26, 2002

Regulatory Engineering Manager

European Contact: Your local Hewlett-Packard Sales and Service Office or Hewlett-Packard GmbH, Department TRE,
Herrenberger Strasse 140, D-71034 Böblingen (FAX:[phone]).

z3.book Page 1 Friday, November 1, 2002 5:40 PM

Index

Numerics

10/100/1000Base-T ports

location on switch … 1-2

1000Base-T

connections, length limitations … 2-4
note on cable requirements … B-2
ports, cables used with … 2-4, B-1
twisted-pair cable specifications … B-1

100Base-TX

connections, length limitations … 2-4
ports, cables used with … 2-4, B-1
twisted-pair cable specifications … B-1

10Base-T

connections, length limitations … 2-4
ports, cables used with … 2-4, B-1
twisted-pair cable specifications … B-1

A

address learning … 1-7
address table

automatic address learning … 1-7
filtering out traffic … 1-7
flooding traffic … 1-7
forwarding traffic … 1-7
moves and changes … 1-7
operation … 1-7

Auto MDI/MDI-X

effect on cable usage … 2-4, B-3
feature description … B-3

B

back of switch

description … 1-5

power connector … 1-5
basic troubleshooting tips … 3-1
blinking LEDs

error indications … 3-3
buttons

Mode LED View button … 1-4

Reset button … 1-2

C

cabinet

mounting the switch in … 2-7

cables

1000Base-T

cable specifications … B-1
connections … 2-4
note on cable requirements … B-2

100Base-TX

cable specifications … B-1
connections … 2-4

10Base-T

cable specifications … B-1

connections … 2-4
connecting cables to switch ports … 2-12
effects of non-standard cables … 3-2
infrastructure requirements … 2-4
twisted-pair connector pin-outs … B-3

cables, twisted pair

crossover cable pin-out … B-5
MDI-X to MDI connections … B-4, B-6
MDI-X to MDI-X connections … B-5
note on requirements for 1000Base-T … B-2
pin-outs … B-6
straight-through cable pin-out … B-4, B-6
switch-to-computer connection … B-4, B-6
switch-to-switch or hub connection … B-5

cabling infrastructure … 2-4
connecting the switch to a power source … 2-12
connector specifications … A-2
crossover cable

pin-out … B-5

D

description

back of switch … 1-5
front of switch … 1-2
LEDs … 1-3

description, switch … 1-1
desktop switch

example topology … 2-14

Index

Index – 1

z3.book Page 2 Friday, November 1, 2002 5:40 PM

diagnostic tests … 3-4

checking the LEDs … 3-4
end-to-end connectivity … 3-5
testing the switch only … 3-4
testing twisted-pair cabling … 3-5

E

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

F

Fault LED … 1-3

location on switch … 1-2

showing error conditions … 3-3
features, switch … 1-6
filtering out traffic … 1-7
flooding traffic … 1-7
forwarding traffic … 1-7
front of switch

10/100/1000Base-T ports … 1-2

description … 1-2

Mode LED View button and LEDs … 1-4

network ports … 1-2

Reset button … 1-2

H

horizontal surface, mounting switch on … 2-12

Index

I

IEEE 802.3ab Auto MDI/MDI-X

See Auto MDI/MDI-X
included parts … 2-1
installation

connecting the switch to a power source … 2-12

horizontal surface mounting … 2-12

network cable requirements … 2-4

precautions … 2-3

rack or cabinet mounting … 2-7

site preparation … 2-4

summary … 2-2

wall mounting … 2-10

L

LEDs

behavior during self test … 2-6
checking during troubleshooting … 3-4
descriptions of … 1-3
error indications … 3-3
Fault … 1-3

showing error conditions … 3-3
Link … 1-3
location on switch … 1-2
Mode

description … 1-3

selecting the display … 1-4
mode view indicators … 1-3
on switch … 1-3
Power … 1-3

behavior during self test … 2-6

length limitations

1000Base-T connections … 2-4
100Base-TX connections … 2-4
10Base-T connections … 2-4

Link LEDs … 1-3

M

MDI-X to MDI network cable … B-4, B-6
MDI-X to MDI-X network cable … B-5
Mode LED View

button … 1-4
indicator LEDs … 1-3

Mode LEDs

description … 1-3
selecting the display … 1-4

mounting the switch

in a rack or cabinet … 2-7
on a horizontal surface … 2-12
on a wall … 2-10

precautions … 2-3, 2-10

moves and changes

effect on address table … 1-7

2 – Index

z3.book Page 3 Friday, November 1, 2002 5:40 PM

N

network cables

1000Base-T

connections … 2-4

100Base-TX

connections … 2-4

10Base-T

connections … 2-4
required types … 2-4
twisted-pair connector pin-outs … B-3

network devices

connecting to the switch … 2-12

network ports

connecting to … 2-12
location on switch … 1-2
standards compliance … A-2
types of … 1-2

non-standard network cables, effects … 3-2

P

parts, included with the switch … 2-1
physical specifications, switch … A-1
pin-outs

twisted-pair cables … B-3

port LEDs

Link … 1-3
Mode … 1-3

ports

10/100/1000Base-T, location on switch … 1-2
network connections … 2-12

power connector … 1-5
Power LED … 1-3

behavior during self test … 2-6
location on switch … 1-2

power source

connecting the switch to … 2-12

precautions

mounting the switch … 2-3
mounting the switch on a wall … 2-3, 2-10
power requirements … 2-3

R

rack

mounting precautions … 2-3
mounting the switch in … 2-7

regulatory statements … C-8

Reset button

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

resetting the switch

location of Reset button … 1-2
troubleshooting procedure … 3-4

S

safety and regulatory statements … C-1
safety specifications … A-2
selecting the Mode LED display … 1-4
self test

LED behavior during … 2-6

specifications

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

straight-through cable

pin-out … B-4, B-6
summary of switch installation … 2-2
switch

connecting to a power source … 2-12

description … 1-1

electrical specifications … A-1

environmental specifications … A-1

features … 1-6

front panel description … 1-2

included parts … 2-1

LED descriptions … 1-3

mounting in a rack or cabinet … 2-7

mounting on a wall … 2-10

mounting on horizontal surface … 2-12

operation … 1-7

physical specifications … A-1
switch operation

address table … 1-7

description … 1-7

filtering out traffic … 1-7

flooding traffic … 1-7

forwarding traffic … 1-7

network moves and changes … 1-7

verifying after installation … 2-5

Index

Index – 3

z3.book Page 4 Friday, November 1, 2002 5:40 PM

T

testing

checking the LEDs … 3-4
diagnostic tests … 3-4
end-to-end communications … 3-5
switch operation … 3-4

twisted-pair cabling … 3-5
tips for troubleshooting … 3-1
topologies

effects of improper topology … 3-2

examples of … 2-14
troubleshooting … 3-1

basic tips … 3-1

checking the LEDs … 3-4

common network problems … 3-1

diagnostic tests … 3-4

effects of improper topology … 3-2

effects of non-standard cables … 3-2

testing end-to-end communications … 3-5

testing the switch … 3-4

testing the twisted-pair cables … 3-5
twisted-pair cable

crossover cable pin-out … B-5

pin-outs … B-3, B-6

straight-through cable pin-out … B-4, B-6

switch-to-computer connection … B-4, B-6

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

testing … 3-5

W

Index

wall

mounting switch on … 2-10

4 – Index

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

©Copyright Hewlett-Packard Company 2002.
All right reserved.
Reproduction, adaptation, or translation
without prior written permission is prohibited
except as allowed under the copyright laws.

October 2002

Manual Part Number
5990-3055

*5990-3055*