HP AdvanceStack Hub-16U Installation And Reference Manual

Installation and
Reference Guide

HP J2611B

HP AdvanceStack 10Base-T Hub-16U

HP Customer Support Services

Obtain the latest agent firmware (j3133a.exe)
from:

HP FTP Library: ftp ftp-boi.external.hp.com
World Wide Web: http://www.hp.com/go/network_city
HP BBS [phone]
CompuServe go hpsys

lib 7
download j3133a.exe

How to get the latest software/agent firmware

You can download:

HP AdvanceStack 8U/16U SNMP firmware: j3133a.exe

from the HP BBS, HP FTP Library Service, CompuServe, and the World Wide
Web. After you download the file, extract the file by typing filename /x. For
example j3133a.exe /x

HP BBS

Set your modem to N-8-1, set speed up to 14400 bps, and with your telecom­munication program (e.g., Windows Terminal) dial [phone] to get the
latest software for your HP networking product.

HP FTP Library Service

1) FTP to Internet IP Address - ftp-boi.external.hp.com

2) Log in as anonymous and press [Return] at the password prompt.

3) Enter bin to set the transfer type.

4) Enter cd /pub/networking/software

5) Enter get

CompuServe

1) Login to CompuServe.

2) Enter go hpsys

3) Enter lib 7

4) Enter download

filename

to transfer the file to your computer and quit.

filename

and then quit.

World Wide Web

http://www.hp.com/go/network_city
Select the“ Support” section, then “Software Downloads and Patches”.

Download the file you need and extract it by typing:
Do you have questions about designing your expanding network? From this

web site, you can also download the Designing HP AdvanceStack Work-
groups Networks Guide which addresses capacity planning or dial
1-800-752-0900 to receive a copy through the mail.

✁

filename

/x

HP AdvanceStack Hub-16U

Installation and Reference Guide

©Copyright Hewlett-Packard Company 1996
All Rights Reserved.

Disclaimer

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

Publication Number

J2611-90101
Edition 1
February 1996

Applicable Product

HP J2611B

Trademark Credits

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

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 statement and the registration
form 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
Roseville, California 95747-5551
http://www.hp.com/go/network_city

HP AdvanceStack Hub-16U

At A Glance

The HP J2611B AdvanceStack Hub-16U is a multiport repeater with 16
twisted-pair network ports. With this hub, you can connect computers and
other devices together in an unshielded twisted-pair cable network. The 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

Hub status
LEDs

Cover plate over slot for HP AUI and
Transceiver Modules

Back of the Hub

ac power
receptacle

MDI/MDI-X switch
for port 16

Twisted-pair
port LEDs

Twisted-pair
ports

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

iv

Features

Network Connections 16 RJ-45 (twisted-pair) ports to connect to end nodes or other devices.

A Media Dependent Interface (MDI) switch for Port 16 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.

Upgradeable Design

Modular, Easy-to-Use Design

Standards-Based Compatibility

A management slot in the back of the hub enables you to install an HP
AdvanceStack 8U/16U SNMP Module. With the module, you can serially
connect an ASCII console to the module to configure, monitor, and troubleshoot
the hub.

An AUI/Xcvr Slot in the front 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. All modules with an external transceiver allow you to connect to
an Ethernet/IEEE 802.3 LAN. The twisted-pair module adds another RJ-45 port
for a total of 17 twisted-pair ports on the hub. The fiber-optic module allows you
to connect your hub to a fiber-optic backbone.

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

Metal brackets (included with the hub) that can be easily attached to the hub
for mounting the hub in a standard 19-inch telco rack or on a wall.

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

v

Table of Contents

1 Installing the Hub

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

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

1. Install add-in modules (optional) . . . . . . . . . . . . . . . . . . 1-3

2. Verify the hub’s operation . . . . . . . . . . . . . . . . . . . . . . 1-6

3. Mount the hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

4. Complete the network connections to the hub . . . . . . . . . . 1-11

HP AdvanceStack 8U/16U SNMP Module . . . . . . . . . . . . . 1-3

HP Transceiver Modules . . . . . . . . . . . . . . . . . . . . . . . 1-5

Rack or Cabinet Mounting . . . . . . . . . . . . . . . . . . . . . . 1-9

Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

Connecting Devices to the Hub . . . . . . . . . . . . . . . . . . . 1-11

Cable management . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Connecting Hubs Together . . . . . . . . . . . . . . . . . . . . . . 1-13

Connecting Hubs to Network Backbones . . . . . . . . . . . . . 1-15

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

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

Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

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

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

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

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

vii

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

HP BBS and World Wide Web . . . . . . . . . . . . . . . . . . . . 2-11

Hewlett-Packard FTP Library Service . . . . . . . . . . . . . . . 2-12

CompuServe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

HP FIRST Fax Retrieval Service . . . . . . . . . . . . . . . . . . . 2-14

HP Network Phone-In Support (NPS) . . . . . . . . . . . . . . . 2-14

3 Hub Reference

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

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

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

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

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

Hub Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Collision Detection . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

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

Link Beat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

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

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

B Specifications

Safety and Regulatory Statements

Index

viii

1

Installation Summary
Included Parts

1. Install Add-in Modules (Optional)

2. Verify the Hub’s Operation

3. Mount the Hub

4. Complete the Network Connections to the Hub

Installing the Hub

Installing the Hub

Installing the Hub

Installation Summary

The basic hardware installation procedure for the Hub-16U 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 in a rack, on a wall, or place it on a tabletop.

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

Included Parts

Each Hub-16U has the following components shipped with it:

HP AdvanceStack Hub-16U Installation and Reference Guide—this

manual (J2611-90101)

A power cord, one of the following:

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

accessory kit:

– two mounting brackets
– four rubber feet
– one tie-wrap
– four 3/8-inch M3 machine screws

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

– four 5/8-inch number 12-24 screws

1-2

Installing the Hub

Installing the Hub

1. Install add-in modules (optional)

The Hub-16U can be custom-configured by installing an optional HP
AdvanceStack 8U/16U SNMP Module or an HP Transceiver Module.

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

HP AdvanceStack 8U/16U SNMP Module

By installing an optional HP J3313A AdvanceStack 8U/16U SNMP Module,
you can configure, monitor, and troubleshoot the hub from a PC running the
ASCII console software or HP Interconnect Manager.

HP AdvanceStack 8U/16U SNMP Module

WARNING Disconnect the power cord from the hub before installing the HP

SNMP or HP Transceiver modules. Electrical shock or other
injury may result if you attempt to install the module without
disconnecting the power cord.

1-3

Installing the Hub

Installing the Hub

The PC serves as a console that enables you to configure, monitor, and
troubleshoot the hub.

ASCII console

null modem cable

For more information about the ASCII console commands, see the
documentation accompanying the optional HP AdvanceStack 8U/16U SNMP
Module.

1-4

Installing the Hub

Installing the Hub

HP Transceiver Modules

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

HP Transceiver Module

The following optional transceivers 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.

1-5

Installing the Hub

2. Verify the hub’s operation

To provide power to the hub, follow these steps:

1. Plug the power cord into the hub’s power cord receptacle and into an
ac power source.

Installing the Hub

Note If your installation requires a different power cord than the one

supplied with the hub, 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 hub.

Power receptacle
on the back of the hub

Note The hub does not have a power switch; it is powered on when the power

cord is plugged in.

1-6

Installing the Hub

Installing the Hub

2. 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 of the hub LEDs are lit for approximately 3
seconds.

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

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

display the state of that port

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 after 3
seconds 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.

3. After the hub has passed its self-test, you are ready to mount the hub.
Before mounting the hub, unplug it.

1-7

Installing the Hub

3. Mount the hub

The HP AdvanceStack Hub-16U can be mounted in three ways:

in a rack or cabinet
on a wall

Installing the Hub

Mounting
Precautions

on a table

The hardware for mounting the hub is included in the accessory kit
(5063-5995) packed with the hub. If you are mounting the hub to a wall, use
the four 5/8-inch number 12 wood screws in the accessory kit.

Hewlett-Packard sells 19-inch free standing equipment racks. To order a rack
for your hub, call HP at 1-800-538-8787 to order part number 46298D.

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
(7.6 cm) of space for twisted-pair cables. In the back of the hub,
leave 3 inches (7 cm) of space for the power cord, the 8U/16U SNMP
module, and a serial cable.

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

Make sure that the power source circuits are properly grounded,
then use the supplied power cord to connect the HP AdvanceStack
hub to the circuit. See the Safety Statements at the end of this

manual.

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 and back of the hub is not
restricted.

1-8

Mounting
bracket

Installing the Hub

Installing the Hub

Rack or Cabinet Mounting

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

from becoming unstable and/or falling over.

1. Using a flat-headed or Torx T-10 screwdriver, attach the mounting
brackets to the hub with 10-mm M3 screws (included in the
accessory kit). Note that the hub’s case and the mounting brackets
are designed to allow you to rack mount the hub with either the back
or the front facing out.

2. Position the hub in the rack or cabinet and slide it up or down until
the rack holes line up with the bracket holes.

3. Then attach the hub to the rack with 5/8-inch number 12-24 screws
included in the accessory kit with a Phillips crosshead screwdriver.
(Some cabinets require number 10-32 screws instead, available as
part number 2680-0302. Make sure you have screws that fit your
cabinet or rack before mounting the hub.)

Front facing out

5/8-inch number
12-24 screws

10-mm M3
screws

1-9