Intel Express 100BASE-T4 User Manual

Intel Express 100BASE-T4 Stackable Hub

User Guide

656943-002

First edition August 1996 Second edition December 1996

Intel Corporation assumes no responsibility for errors or omissions in this manual. Nor does Intel make any commitment to update the information contained herein.

* Other product and corporate names may be trademarks of other companies and are used only for explanation and to the

owners’ benefit, without intent to infringe.

Contents

Quick Start 1 Chapter 1 Overview 3

Features ............................................................................................................................................ 3

Physical Description.......................................................................................................................... 4

Chapter 2 Installing the Express Hub 9

Requirements .................................................................................................................................... 9

Installing a Single Hub .................................................................................................................... 10

Stacking Hubs ................................................................................................................................. 11

Removing a Hub from a Stack ......................................................................................................... 12

Installing Uplink Modules ............................................................................................................... 12

Adding a Network Management Module (NMM) ............................................................................ 13

Chapter 3 Connecting the Devices 15

Connecting Cables to the Hub ......................................................................................................... 15

Checking the LEDs ......................................................................................................................... 16

Unit Numbering Convention ........................................................................................................... 18

Partitioned Ports.............................................................................................................................. 18

Using a Switch to Connect Hubs ..................................................................................................... 19

Connecting to Non-100BASE-T4 devices ........................................................................................ 20

Appendix A Fast Ethernet Topology Rules 23

Physical Layer Media Specifications ............................................................................................... 23

Basic Rules ..................................................................................................................................... 24

Network Topology Extensions......................................................................................................... 26

Appendix B Optional Equipment and Technical Specifications 29

Optional Equipment ........................................................................................................................ 29

Technical Specifications.................................................................................................................. 31

Limited Warranty ........................................................................................................................... 36

iii

CONTENTS

Intel Express 100BASE-T4 Stackable Hub

Index 37 Customer Support Inside back cover

Quick Start

1 Install the hub(s).

Maximum stack: Six hubs Rack requirements: Standard 19-in (48.26 cm), 1.5 EIA rack-mount

Shelf requirements: Support for 10 lbs (4.5 kg) per hub

2 Connect the stack.

Use the cascade cables to connect multiple hubs. You need to purchase cascade cables separately from your network services supplier (see Appendix B for more information).

Do not use UTP cabling to connect hubs.

3 Connect the devices.

Connect 100BASE-T4 devices to the hub using four-pair Category 3, 4, or 5 unshielded twisted pair (UTP) cabling. Maximum cable distance between a port and an attached device is 100 meters.

space for each hub

12.3 lbs (5.6 kg) with uplink module and NMM

4 Plug power cords into each hub, then check LEDs.

• Make sure the Pwr LED is lit for all hubs.

• Make sure the numbered port LEDs are lit for connected devices.

Pwr LED

Port LEDs

Overview

This chapter includes a summary of the Intel Express 100BASE-T4 Stackable Hub’s features and a physical description of the hub and its components.

Features

Key features of the Intel Express 100BASE-T4 Stackable Hub

• Compatibility with the IEEE 802.3u standard for Fast Ethernet.

• Twelve 100BASE-T4 fixed ports.

• Uplink path to 100BASE-TX or 100BASE-FX devices via optional uplink modules.

• Hub management through the optional Network Management Module (NMM).

• Support for 4-pair Category 3, 4, or 5 UTP cabling.

CHAPTER 1

Media adapter slot for uplink modules

Expansion slot for NMM

Intel Express 100BASE-T4 Stackable Hub

Physical Description

Front panel

The front panel of the Express Stackable Hub provides twelve 100BASE-T4 ports, an LED matrix (see “LED matrix” later in this chapter for a description of LEDs), a media adapter slot, and an expansion slot.

RJ-45 100BASE-T4 ports

NOTE

If you include Intel Express 100BASE-TX and 100BASE-T4 Stackable Hubs in the same stack, make sure you attach only the appropriate devices (TX or T4) to each type of hub.

RJ-45 port

The twelve 100BASE-T4 ports with fixed RJ-45 connectors allow you to connect to 100BASE-T4 network devices. You can use 4-pair Category 3, 4, or 5 unshielded twisted-pair (UTP) cable.

The maximum cable distance between the port and the attached device is 100 meters (328 feet), including all patch cables, panels, and connectors.

The following table lists the pinouts and pin pairings for a 100BASE-T4 hub and a server or workstation.

Workstation or server Hub

CHAPTER 1

Overview

LED matrix

The LED matrix on the Express Stackable Hub’s front panel allows you to view the hub’s operational status, collisions, network utilization, NMM status, and port status.

The following table describes the LEDs on the matrix.

Label Type Color Meaning

Pwr Hub power supply status Green Hub is receiving power.

Off Hub is not receiving power.

Stat Hub status Green Hub has power, has passed the

confidence test, and is operating normally.

Amber At initial power up, indicates the hub is

running its confidence test. If this LED lights after the confidence test is performed, the hub is not operating normally due to a fan failure, a power supply failure, or a confidence test failure.

Off Hub is not receiving power.

RPS Not supported N/A N/A Col Collision status Amber A collision was detected on the

segment.

Off Collisions are not detected on the

segment.

CHAPTER 1

Intel Express 100BASE-T4 Stackable Hub

Label Type Color Meaning

Data % Network utilization Green Dynamically indicates the percentage of

network utilization for the Ethernet segment in a hub or a stack of hubs. Operates as a bar graph. For example, if the

≤1% and 5% Data

LEDs are green, that stack’s segment is using roughly 5% of the network.

1 Media Uplink module Green An uplink module is installed in the media Adapter status adapter slot, link status is good, and the port

is not partitioned (disabled). Amber Link status is good, but port is partitioned. Off Link status is not detected.

Expansion Expansion slot Green The module in the expansion slot passed the Slot Stat module status confidence test and is operating normally.

Amber The module in the expansion slot failed. Off There is no module installed in the

expansion slot.

Stat Management status Green The NMM passed the confidence test and is

operating normally. Amber The NMM failed.

Mstr Management status Green The NMM installed in the hub is the master

NMM for that stack of hubs. Off The NMM installed in the hub is not the

master NMM for that stack of hubs.

Enbl Management status Green The hub is properly connected to the other

hubs in the stack and is actively managed by

an NMM. Off The hub is not managed by an NMM.

Port Status Port status Green Link status is good; port is not partitioned. 1 — 12 (hub ports)

13 — 24 (not used) Amber Link status is good; port is partitioned.

Off No link detected.

CHAPTER 1

Overview

Rear panel

The rear panel of the Express Stackable Hub provides an AC power receptacle, a redundant power connector (not supported), and two cascade cable connectors.

Power receptacle

The AC power receptacle is provided for connecting to an AC power outlet. The Express Stackable Hub accepts between 100 and 240V AC.

Cascade connectors

NOTE

A stack of Express Stackable Hubs can contain a maximum of six hubs.

NOTE

If you include Intel Express 100BASE-TX and 100BASE-T4 Stackable Hubs in the same stack, make sure you attach only the appropriate devices (TX or T4) to each type of hub.

The Cascade Down and Cascade Up connectors and an Intel cascade cable allow you to stack and link multiple Express Stackable Hubs to increase the size of a particular workgroup in your network. The cascade cable connects to the Cascade Down connector on the top hub and the Cascade Up connector on the hub below it.

CHAPTER 1

Intel Express 100BASE-T4 Stackable Hub

Optional equipment

The Intel 100BASE-T4 Stackable Hub ships with filler panels installed in the media adapter and expansion slots. Both panels can be removed to accommodate optional modules.

Media adapter slot

NOTE

Port 1 is disabled when the media adapter slot is filled.

NOTE

The Express 100BASE-T4 Stackable Hub does not support the 100BASE-TX 12-port expansion module.

The media adapter slot is located in the upper-left corner of the Express 100BASE-T4 Stackable Hub and accommodates two types of optional 100 Mbps uplink module:

• 100BASE-TX uplink module

• 100BASE-FX uplink module Uplink modules allow you to connect to other 100 Mbps network

devices using a different media. For information about these modules, see “Optional Equipment” in

Appendix B.

Expansion slot

The expansion slot is located in the lower half of the Express 100BASE-T4 Stackable Hub and accommodates an optional Express Stackable Hub Network Management Module (NMM).

For information about the NMM, see “Optional Equipment” in Appendix B.

Installing the

Express Hub

Requirements

Rack installation Standard 19-in. (48.26 cm.) EIA equipment rack requirements 1.5 EIA rack-mount spaces available for each

hub

Table and shelf Approximately 13.25-in. (33.66 cm.) by 19.25-in. installation requirements (48.90 cm.) area on a level tabletop or shelf

Support for at least 10 lbs. (4.5 kg.) per hub with filler panels installed in expansion and media adapter slots

Support for at least 12.3 lbs. (5.6 kg.) per hub with an NMM and an uplink module installed

Temperature Ambient temperature between 5° C and 40° C

(41° F and 104° F) No nearby heat sources such as direct sunlight,

warm air exhausts, or heaters

Humidity Between 5% and 85%, noncondensing Ventilation Minimum 2 in. (5.08 cm.) on all sides for cooling

and adequate airflow in room or wiring closet

Operating conditions At least 6 ft. (1.83 m.) from nearest source of

electromagnetic noise (such as a photocopier)

Service access Minimum 12 in. (30.48 cm.) front and rear for

AC disconnect, service access and maintenance access

Front and rear clearance for cables and wiring hardware such as punchdown blocks

Wiring hardware Wiring hardware, such as punchdown blocks or

patch panels, in place before installing the hub

Power Adequate power source within 6 ft. (1.83 m.)

CHAPTER 2

Intel Express 100BASE-T4 Stackable Hub

Installing a Single Hub

NOTE

Only qualified technicians should install and maintain this equipment.

CAUTION

The power cord is a North American type, UL-listed/ CSA-certified power supply cord. Discard this cord if it’s inappropriate for the electrical system of your country, and get the cord required by your national electrical codes or ordinances and certified for use in your region.

To install the hub in a rack

1 Attach the mounting brackets to the sides of the hub. 2 Align the mounting holes in the brackets with the holes in the rack. 3 Insert two pan-head screws with nylon washers through each

mounting bracket and into the rack.

4 Connect the AC power cord to the hub and then to the wall outlet

or power strip.

To install the hub on a table or shelf

When installing a hub on a table or shelf, place the self-adhesive feet on the bottom of the hub.

CAUTION

Don’t connect the power cord to a hub until all hubs are installed, connected together through cascade cables, and ready for operation.

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