HP AdvanceStack J2610B Installation And Reference Manual

HP AdvanceStack 10Base-T Hub-8U

Installation and Reference Guide

© Copyright Hewlett-Packard Company 1997.
All Rights Reserved.

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

Publication Number

J2610-90201
Edition 1
July 1997

Applicable Product

HP J2610B

Trademark Credits

MS-DOS® and Microsoft® are U.S. registered trademarks
of Microsoft Corporation. Ethernet is a registered trade­mark of Xerox Corporation.

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 warranty booklet included with the product.

A copy of the specific warranty terms applicable to your
Hewlett-Packard product and replacement parts can be ob­tained from your HP Sales and Service Office or authorized
dealer.

8000 Foothills Boulevard MS 5551
Roseville, California 95747-5551
http://www.hp.com/go/network_city

HP AdvanceStack Hub-8U

At A Glance

The HP J2610B AdvanceStack Hub-8U is a multiport repeater with eight
twisted-pair network ports. With this hub, you can connect computers and
other devices together in an unshielded twisted-pair cable network. This hub
is compliant with the IEEE 802.3 Type 10Base-T standard and supports both

802.3 and Ethernet networks.

iii

Front of the Hub

AUI/Xcvr port
LED

Hub status LEDs

Back of the Hub

cover plate over slot for HP AUI
and Transceiver Modules

twisted-pair
port LEDs

Twisted-pair ports

cover plate over expansion slot for
HP AdvanceStack 8U/16U SNMP
Module

MDI/MDI-X switch
for port 1

DC power
receptacle

iv

Features

Network Connections

Upgradeable Design, with
Management Options

Eight RJ-45 (twisted-pair) ports to connect to end nodes or other devices.
A Media Dependent Interface (MDI) switch for Port 1 which allows you to

connect either an end node (MDI-X position) or to cascade a hub (MDI position)
to the port, using a “straight-through” twisted-pair cable in both cases.

A management slot in the back of the hub enables you to install an optional HP
AdvanceStack 8U/16U SNMP Module. With the module, you can configure,
monitor, and troubleshoot the hub using either of the following options:
+ Serially connect an ASCII console to the hub.
+ Use HP AdvanceStack Assistant (HP ASA) to monitor traffic and manage
the hub from a PC running ASA on the network. HP ASA (formerly HP
Interconnect Manager) is included at no extra cost with the 8U/16U SNMP
Module. HP ASA works over the network through either a twisted-pair cable
connected to any UTP port, or a fiber or ThinLAN cable connected to an
optional ThinLAN or fiber-optic transceiver installed in the back of the hub.

An AUI/Xcvr Slot in the back of the hub for several types of transceiver modules
including ThinLAN, AUI, twisted-pair, and fiber-optic. With the optional ThinLAN
transceiver, you can “hot-swap” a hub. Hot-swap means that removing a hub
connected to other hubs through the ThinLAN transceiver does not bring down
the network; you can upgrade or replace hubs in a stack with the network up
and running. The AUI Port Module with an external transceiver allows you to
connect to an Ethernet/IEEE 802.3 LAN. The twisted-pair module adds a ninth
RJ-45 port for a total of nine twisted-pair ports on the hub. The fiber-optic
module allows you to connect your hub to a fiber-optic backbone.

Modular, Easy-to-Use Design

Standards-Based Compatibility

LEDs showing power, activity, collisions, and port status provide quick, easy-to­read hub status information and troubleshooting assistance.

A small footprint that allows you to install the hub in a variety of ways, including
on a desk, under a desk, or on a wall.

Compatible with the IEEE 802.3 Type 10Base-T standard to support both 802.3
and Ethernet networks.

v

0_hperf%.fm5 Page 3 Tuesday, July 22, 1997 4:54 PM

HP Customer Support Services

How to get the latest software/agent firmware

You can download from the World Wide Web, HP FTP Library Service, CompuServe,
and HP BBS a compressed file (
Management Module firmware. After you download the file,

filename

World Wide Web

Select the “Support” section.
From this web site, you can also download information on the HP networking

products. If you have a growing network, download the D

Networks Guide

and pressing

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

[Enter]

. For example,

or call 1-800-752-0900 in the U.S. to receive a copy through the mail.

j3133a.exe

j3133a [Enter].

) containing the latest version of the HP

extract

esigning HP AdvanceStack

the file by typing

HP FTP Library Service

1. FTP to Internet IP Address —

2. Log in as

3. Enter

4. Enter

5. Enter

CompuServe

1. Login to CompuServe.

2. Go to the “hp” service.

3. Select “HP Systems, Disks, Tapes, etc.”

4. Select “Networking Products” library.

Download

5.

HP BBS

Set your modem to no parity, eight bits, 1 stop bit, set speed up to 14400 bps, and with
your telecommunication program (e.g., Windows Terminal) dial [phone] in the
U.S. to get the latest software for your HP networking product. For other countries,
see http://www.hp.com/cposupport/eschome.html.

anonymous

bin

to set the transfer type.

cd /pub/networking/software

filename

get

filename

and press

to transfer the file to your computer, then quit.

and then quit.

ftp ftp.hp.com

[Enter]

at the password prompt.

.

.

(over for more services)

✂

Obtain the latest Module firmware (j3133a.exe) from

World Wide Web: http://www.hp.com/go/network_city
HP FTP Library

Service:
HP BBS: [phone]

(over)

ftp ftp.hp.com

0_hperf%.fm5 Page 4 Tuesday, July 22, 1997 4:54 PM

HP FIRST Fax Retrieval Service

HP FIRST is an automated fax retrieval service that is available 24 hours a day, seven
days a week. HP FIRST provides information on the following topics:

■

Product information

■

Troubleshooting instructions

■

Technical reviews and articles

■ Configuration information

To access HP FIRST, dial one of the following phone numbers:

Location Phone Number

U.S. and Canada Only Dial 1 [phone] with your fax machine or touch-tone phone

and press 1.
Outside the U.S. and Canada Dial 1 [phone] from your fax machine and press 9.
To receive a list of currently available documents, enter document number 19941. The information

you requested will be sent to you by return fax. For other countries, see http://www.hp.com/
cposupport/eschome.html.

Additional HP Support Services

In addition to the above services, you can purchase various HP telephone support
services which provide you expert HP technical assistance:

■

Network Phone-In Support provides you support at an hourly rate. In the U.S.,
call 1-800-790-5544. In other countries, please contact your local HP Response
Center to see if this service is available in your country.

■ HP SupportPack LAN Support provides problem resolution for small to

medium local area networks. Contact your HP Authorized Reseller or the
nearest HP Sales and Support Office for more information.

■

HP SupportPack Comprehensive Network Support provides complete prob­lem resolution for medium to large interconnected local and wide area
networks. Contact your HP Authorized Reseller or the nearest HP Sales and
Support Office for more information.

HP offers other hardware support services. Please contact your reseller for more
information.

✂

CompuServe: Go hpsys

Lib 7.
Download j3133a.exe

Network Phone-In
Support (hourly):

1-800-790-5544

Table of Contents

1 Installing the Hub

Installation Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

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

1. Install add-in modules

2. Verify the hub’s operation . . . . . . . . . . . . . . . . . . . . . 1-5

3. Mount the hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

Equipment Required . . . . . . . . . . . . . . . . . . . . . . . 1-6

Mounting Precautions . . . . . . . . . . . . . . . . . . . . . . 1-7

Marking the Location . . . . . . . . . . . . . . . . . . . . . . . 1-7

Mounting the Hub . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

4. Complete the network connections to the hub . . . . . . . . . 1-9

Connecting Devices to the Hub . . . . . . . . . . . . . . . . . 1-9

Connecting Hubs Together . . . . . . . . . . . . . . . . . . . . 1-10

Twisted-Pair Cascade Connections . . . . . . . . . . . . . . . 1-10

ThinLAN Connections . . . . . . . . . . . . . . . . . . . . . . 1-11

Connecting Hubs to Network Backbones . . . . . . . . . . . 1-12

Connecting the Hub 8U to a ThinLAN Backbone . . . . . . . 1-12

Connecting the Hub 8U to a Fiber-Optic Backbone . . . . . . 1-13

5. Connect the hub to an ASCII console

(optional)

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

(optional)

. . . . . . . . 1-14

2 Troubleshooting

Troubleshooting Approaches . . . . . . . . . . . . . . . . . . . . . . 2-2

Diagnosing with the LEDs . . . . . . . . . . . . . . . . . . . . . . . . 2-3

LED Pattern During Self-Test . . . . . . . . . . . . . . . . . . 2-3

LED Error Indications . . . . . . . . . . . . . . . . . . . . . . 2-4

Installation Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Incorrect Hardware Installation . . . . . . . . . . . . . . . . . 2-6

Cabling Problems . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Non-standard Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Unusual Network Activity . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

Testing the Hub Only . . . . . . . . . . . . . . . . . . . . . . . 2-8

Testing Twisted-Pair Cabling . . . . . . . . . . . . . . . . . . . 2-8

vii

Testing End-to-End Network Communications . . . . . . . . 2-9

Replacement Instructions . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Customer Support Services . . . . . . . . . . . . . . . . . . . . . . . 2-11

3 Hub Reference

Front of the Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Hub status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Port status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Back of the hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Management Slot . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

AUI/Xcvr Slot . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Hub Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Collision Detection . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Auto-Partitioning . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Link Beat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

A Cables and Connectors

Recommended Cables . . . . . . . . . . . . . . . . . . . . . . . . . . A-2

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

Twisted-Pair Cable for Hub-to-Computer Network Connection . A-3

Twisted-Pair Cable Pin Assignments . . . . . . . . . . . . . . . . . A-4

Twisted-Pair Straight-Through Cable . . . . . . . . . . . . . . A-4

ThinLAN Cable Requirements . . . . . . . . . . . . . . . . . . . . . . A-4

B Specifications

Safety and Regulatory Statements

Index

viii

1

Installation Summary

1. Install Add-in Modules

2. Verify the Hub’s Operation

3. Mount the Hub

4. Complete the Network Connections to the Hub

5. Connect the Hub to an ASCII Console

(optional)

(optional)

Installing the Hub

Installing the Hub

This chapter describes how to install the HP AdvanceStack Hub-8U, verify
its operation, and connect it to a network, other hubs, computers, and/or
other devices.

Installation Summary

Installing the Hub

The basic hardware installation procedure for the HP AdvanceStack Hub-8U
is as follows:

1. Install the optional HP AdvanceStack 8U/16U SNMP Module and/or
one of the optional HP Transceiver Modules.

2. Verify the hub’s operation.

3. Mount the hub on a wall or under a tabletop.

4. Connect the hub to a network or other hubs, and connect
computer(s) and/or other device(s) to the hub’s ports.

5. (Optional) Connect the hub to the AdvanceStack 8U/16U SNMP
management console.

Included Parts

Each HP AdvanceStack Hub-8U has the following components shipped with
it:

HP AdvanceStack Hub-8U Installation and Reference Guide—this
manual (J2610-90101)

An ac power cord, one of the following:

Australia/New Zealand
Denmark
Europe
Japan
Switzerland
United Kingdom/Hong Kong
U.S./Canada

A power supply, part number 0950-3058

(8120-1369)
(8120-2956)
(8120-1689)
(8120-4753)
(8120-2104)
(8120-1351)
(8120-1378)

1-2

Installing the Hub

1. Install add-in modules (optional)

The HP AdvanceStack Hub-8U can be custom-configured by installing the
optional HP AdvanceStack 8U/16U SNMP Module and/or an HP Transceiver
Module. If you intend to install any of these optional modules, refer to the
documentation that was shipped with it.

It may be more convenient to install these optional modules before installing
the hub under a desk or other location. Inspect your installation site and
identify whether the hub’s module slots will be accessible.

The HP J3133A AdvanceStack 8U/16U SNMP Module enables you to connect
a PC to the hub to configure, monitor, and troubleshoot the hub.

Installing the Hub

Caution To avoid possible damage to module or transceiver circuitry,

disconnect the power cable from the hub before installing (or
removing) the optional SNMP Module or a transceiver.

1-3

Installing the Hub

The HP Transceiver Modules provide extended connectivity choices from
the hub to Ethernet networks.

Installing the Hub

The following optional transceiver modules provide these additional
connectivity options:

HP J2608A ThinLAN Transceiver Module
for 10Base-2 networks

HP J2606A Fiber-Optic Transceiver Module for
10Base-FL networks

HP J2607A Twisted-Pair Transceiver Module for
10Base-T networks

HP J2609A AUI Port Module for connecting a
standard IEEE 802.3 external transceiver to the hub

The HP AdvanceStack 8U/16U SNMP Module and HP Transceiver Modules
and their cabling configurations are described in their accompanying
documentation.

1-4

Installing the Hub

Note

2. Verify the hub’s operation

Your hub uses power from an ac adapter.

If your installation requires a different power cord than the one supplied
with the hub, contact your HP-authorized LAN dealer or your local HP
sales office.

The hub does not have a power switch; it is powered on when the power
cord is plugged in.

To provide power to the hub, follow these steps:

Plug the power supply into the receptacle on the hub marked

1.

“Power”.

Plug the ac power cord into an ac power source.

2.
the Hub-8U, note that the ac outlet must be installed near the equipment
and should be easily accessible.

When installing

Installing the Hub

Example of an ac power cord
for a U.S. outlet. Plug the ac
power cord provided with your
hub into an ac power source.

power supply

Power receptacle
on the back of the
hub.

1-5

Installing the Hub

3. Check the LEDs on the hub’s front panel.
When the hub is powered on, it performs a self-diagnostic test.

During the test, all LEDs are lit for a short time.
When the self-test completes successfully, the following events occur:

• the Power LED stays on

• the twisted-pair Port LEDs enter their normal operating state

Installing the Hub

• If an HP Transceiver module is installed, the AUI/Xcvr LED

stays lit

A Port LED stays on if link beat has been detected at the port. A Port
LED turns off if link beat is not detected. If you have an optional HP
AdvanceStack 8U/16U SNMP Module installed, the Port LEDs have
additional meanings. See the documentation accompanying the
module for more information. If all of the Port LEDs stay on and you
have not connected end nodes to these ports, the hub has failed its
self-test. See chapter 2, “Troubleshooting” for information about
diagnosing your hub.

4. After the hub has passed its self-test, you are ready to mount

the hub. Before mounting the hub, unplug it.

3. Mount the hub

The HP AdvanceStack Hub-8U can be placed on a desk or mounted on any
vertical or horizontal surface, for example, a wall or under a desk.

To locate the hub on a table or other horizontal surface, no special tools are
necessary. Be certain to pick a sturdy table in an uncluttered area. You may
want to secure the hub’s cables to the leg of the table to prevent people from
tripping over them.

Equipment Required

To mount the hub on a wall or under a desk, you will need the following
equipment:

two number 6 by half-inch or M3 x 12 mm pan head wood screws
(not included with the hub)
a Phillips (cross-head) screwdriver (not included with the hub)

1-6

Installing the Hub

Mounting Precautions

Before mounting the hub, follow these mounting precautions:

Plan the hub’s location and orientation relative to other devices and
equipment. Also consider the cabling that will be attached to the hub
and ports that will be used. In the front of the hub, leave 3 inches
(76 mm) of space for twisted-pair cables. In the back of the hub,
leave 3 inches (7 cm) of space for the ac power cord, the
AdvanceStack 8U/16U SNMP module, and a serial connector.

Ensure that the HP AdvanceStack hub(s) do not overload the power
circuits, wiring, and over-current protection

possibility of overloading the supply circuits, add together the
ampere ratings from the nameplates of all your hubs (and other
equipment) installed on the same circuits and compare the total with
the rating limits for the supply circuits.

Do not install the HP AdvanceStack hub in an environment where
the operating ambient temperature might exceed 55°C (131°F).

Make sure the air flow around the sides of the hub is not restricted.

Installing the Hub

. To determine the

Important

Marking the Location

A hub should be mounted only to a wall or wood surface that is
at least 1/2-inch (12.7 mm) plywood or its equivalent.

1. Using the illustration on the next page, mark the screw hole locations
on the mounting surface 4 13/16 inches (122.2 mm) apart. Make sure
you allow enough room to make the cable connections to the hub
and to be able to access the cables if they have to be moved.

2. Using a Phillips (cross-head) screwdriver, screw in the two pan head wood
screws leaving 1/8th inch (3 mm) between the screw head and the mounting
surface. (You may need to first pre-drill the surface with a 3/32-inch bit.)

1-7

Installing the Hub

Mounting the Hub

After the screws are in place, follow the steps below for mounting the hub
on a wall or under a desk.

1. For a vertical mount (such as a wall), place the bottom of the hub
against the screws. For a horizontal mount under a surface such as a
desk or table, turn the hub upside down and gently place the hub up
against the screws.

Installing the Hub

2. Slide the hub in either of the two diagonal directions to secure the
hub into place.

(Actual size of number 6
by half-inch or
M3 x 12 mm pan head
wood screw)

1-8

Installing the Hub

4. Complete the network connections

to the hub

Reconnect the hub to the power source and then make the network
connections to the hub. Typical hub connections are:

Hub-to-device connections.

as computers and printers.

Hub-to-hub connections

Hub or other Ethernet hub.

Hub-to-network backbones.

This section describes the different ways you can connect your hub to your
network.

Connecting Devices to the Hub

To connect a device to the hub, push the RJ-45 plug into the RJ-45 jack until
the tab on the plug clicks into place.

Connecting to network devices such

. Connecting to another HP AdvanceStack

Connecting to a network backbone.

Installing the Hub

RJ-45 plug

unshielded twisted-pair cable

to a computer or printer

1-9

Installing the Hub

Connecting Hubs Together

Twisted-Pair Cascade Connections

To expand your network, the hub can be connected to other hubs by using
the Media Dependent Interface (MDI) switch.

The MDI/MDI-X switch controls how the signals are sent through the twisted-

Installing the Hub

pair cable connected to Port 1. The hub is shipped with the switch in the
MDI-X position. The switch is a pushbutton switch with
two positions:

In the MDI position, use Port 1 to connect your hub to another
hub. In this position, the hub reverses the Tx and Rx port pins for
you. This allows you to use “straight-through” cable rather than
“cross-over” cable to connect two hubs together.

In the MDI-X position, use Port 1 to connect your hub to a PC or
similar device using “straight-through” cable. In the MDI-X position,
the switch is exposed by 0.10 inches (2.5 mm) in front of the bezel.

Caution

MDI/MDI-X
switch

You must disconnect the device connected to Port 1 before changing the
position of this switch. If you push the MDI/MDI-X switch and change
its position while your network is running, the hub or PC connected to
Port 1 will be disrupted. To restore your connection, push the
MDI/MDI-X switch in again.

1-10

Installing the Hub

In the following illustration, the first hub is connected to two end nodes and
to a second hub.

Hub attached to Port 1:
switch in MDI position and
straight-through cable is used.

Up to 100 meters

PC attached to Port 1:
switch in MDI-X position
and straight-through
cable is used.

Installing the Hub

ThinLAN Connections

With an HP ThinLAN Transceiver Module for 10Base-2 networks, you can
connect your hub to a thinLAN network. The following illustration shows a
hub with an HP ThinLAN Transceiver Module connected to a ThinLAN
backbone.

50-ohm terminator

HP J2608A ThinLAN
Transceiver Module installed
in the AUI/Xcvr Slot

thin coax cable

1-11