Intel Express 140T Manuel utilisateur

722791-001

Intel®Express 140T

Standalone Hub

Quick Start and User Guide

Intel Corporation, 5200 NE Elam Young Parkway, Hillsboro OR 97124-6497

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.

First Edition September 1998 722791-001

Year 2000 Capable

An Intel product, when used in accordance with its associated documentation, is “Year 2000 Capable” when,

upon installation, it accurately stores, displays, processes, provides, and/or receives date data from, into, and

between the twentieth and twenty-first centuries, including leap year calculations, provided that all other

technology used in combination with said product properly exchanges date data with it.

Contents

Quick Start 2

User Guide 3

Overview ..............................................................................................3

Understanding 140T Hubs....................................................................4

Port LEDs ......................................................................................4

Hub LEDs......................................................................................5

Connecting to Devices..........................................................................6

Connection Guidelines ..................................................................6

Bridging Segments ........................................................................6

Daisy-chaining Hubs .....................................................................7

Cabling Devices....................................................................................8

Media Requirements .....................................................................8

Straight-through vs. Crossover Cables..........................................8

Testing Cables ...............................................................................8

Troubleshooting....................................................................................10

Regulatory Information ........................................................................11

Warnings ...............................................................................................12

Limited Hardware Warranty .................................................................15

Intel Customer Support................................................Inside Back Cover

91011 12

13 14

1234

1 5 10 30 40 50+

Traff

10Mbps

Power

10Mbps

Port

Activity

Port

Speed

Intel®Express 140T

Standalone Hub

9101112

123456

13 14

12345

Install the Hub

Connect

the Devices

Check the

Connections

• Remove the hub and parts from the box.

• Attach the enclosed brackets if you plan

to mount the hub in a rack.

• Install the Intel®Express 140T

Standalone Hub in a rack or on a shelf.

• Plug in the power cord.

• Check the port LEDs (located to the left

of the ports) to confirm the link status.A

solid LED indicates a valid link.A

blinking LED indicates port activity.

• The bottom two rows indicate port speed.

• All ports automatically detect the speed

of the device connected to them.

• Connect PCs and print servers to the hub

with straight-through cables.

• Use a crossover cable to connect a hub to

another hub or switch.

• Use a straight-through cable to connect to

another hub or switch when using the

daisy-chain port.

• Use only CAT 5 UTP to connect

100Mbps devices. To connect 10Mbps

devices, use CAT 3, 4, or 5 UTP.

Top Row – Port Activity

Solid Green = Link

Blinking = Activity

Orange = Autodisabled

Bottom Row – Port Speed

Solid Green = 100Mbps

Off = 10Mbps

100Mbps

Daisy-chain

MDI

1510

30 40 50+

1510

30 40 50+

10Mbps

Power

10Mbps 100Mbps

Collisions

Class

Port

Activity

Port

Speed

Solid green = Link

Blinking green = Activity

Orange = Autodisabled

Solid Green = 100Mbps

Off = 10Mbps

Intel

Express 140T

Standalone Hub

5678

1234

17 18 19 20

13 14 15 16

12345678910 11 12

13 14 15 16 17 18 19 20 21 22 23 24

12345678910 11 12

13 14 15 16 17 18 19 20 21 22 23 24

910 11 12

21 22 23 24

Traffic%

Rack: Use the four

small screws to attach

the brackets to the hub.

Shelf: Peel off the protective

backing and attach the rubber

feet to the hub.

10/100

10/100 10/100

Hub Hub or Switch

Hub Print Server

Hub PC/Server

straight-through

From To

Quick Start

Hub Hub or Switch

straight-through

using the hub’s daisy-chain port

crossover

not using the hub’s daisy-chain port

User Guide - Overview

Features

This guide covers both the 16- and 24-port versions of the Express 140T

Standalone Hub.

R100Mbps

Daisy-chain

MDI

1 5 10 30 40 50+1 5 10 30 40 50+ Traffic %

10Mbps

Power

10Mbps 100Mbps

Collisions

Port

Activity

Port

Speed

Intel®Express 140T

Standalone Hub

Solid green = Link

Blinking green = Activity

Orange = Autodisabled

Solid Green = 100Mbps

Off = 10Mbps

Class II

91011 12

5678

13 14 15 16

1234

9101112

12345678

13 14 15 16

12345678

13 14 15 16

R100Mbps

Daisy-chain

MDI

1 5 10 30 40 50+1 5 10 30 40 50+ Traffic %

10Mbps

Power

10Mbps 100Mbps

Collisions

Class II

Port

Activity

Port

Speed

Solid green = Link

Blinking green = Activity

Orange = Autodisabled

Solid Green = 100Mbps

Off = 10Mbps

Intel®Express 140T

Standalone Hub 56781234

17 18 19 2013 14 15 16

123456789101112

13 14 15 16 17 18 19 20 21 22 23 24

123456789101112

13 14 15 16 17 18 19 20 21 22 23 24

91011 12

21 22 23 24

AC LINE

100-240 VAC

50-60 Hz

1.5A MAX.

50W

• Autosensesspeed—10Mbpsor 100Mbps

per

port.

• Automaticallybridges10Mbps and 100Mbps segments.

• Canbe daisy-chained with another 140Thub (or any ClassII hub)to expand port

density (maximum of two hubs).

Ports

Utilization

LEDs

Port LEDs

16-port 140T Hub (Product Code EE140TX16)

24-port 140T Hub (Product Code EE140TX24)

Daisy-chain port

Fan AC

Power

Plug

Understanding 140T Hubs

Port LEDs

On the 140T, the port LEDs are located on a common panel with the hub

LEDs. These LEDs indicate port status, individual port speed, and port

activity.

Port

Activity

Port

Speed

Solid green = Link

Blinking green = Activity

Orange = Autodisabled

Solid Green = 100Mbps

Off = 10Mbps

9101112

12345678

13 14 15 16

12345678

13 14 15 16

LED Status Meaning

PortActivity Solid green Device linked.

Blinking green Receiving activity on that port.

Blinking orange Port auto-disabled (partitioned). See below.

Off No link detected.

Port Speed Solid green Device connected at 100Mbps

Off Device connected at 10Mbps.

Partitioned ports

A port is automatically disabled (partitioned) by the hub when an invalid

condition occurs, such as too many consecutive collisions.

Once the hub is able to transmit data to the port collision free, the hub

automatically re-enables (unpartitions) the port. Clients are usually not

affected by a partitioned port because the port is often unpartitioned very

quickly.

Usually, a partitioned port indicates an overloaded network or a

malfunctioning device (like an adapter card) on the network. To alleviate an

overloaded network, divide the network into smaller segments so that fewer

devices share the same fixed amount of bandwidth.

Top rows:

Port Activity

Bottom rows:

Port Speed

Hub LEDs

The 140T hub LEDs are located above and below the port LEDs. These

LEDs indicate the condition of the power supply, collisions per segment,

and the amount of traffic per segment.

100Mbps

1 5 10 30 40 50+1 5 10 30 40 50+

Traffic %

10Mbps

Power

10Mbps 100Mbps

Collisions

Port

Activity

Port

Speed

Intel

Express 140T

Standalone Hub

Solid green = Link

Blinking green = Activity

Orange = Autodisabled

Solid Green = 100Mbps

Off = 10Mbps

9101112

12345678

13 14 15 16

12345678

13 14 15 16

LED Status Meaning

Power On Hub is receiving power.

Off Hub is not receiving power.

Collisions 10Mbps Blinking Collisions detected on 10Mbps segment.

Collisions 100Mbps Blinking Collisions detected on 100Mbps segment.

Traffic% (1-50+) On Gives an approximation of the traffic in

the 10Mbps or 100Mbps segments.

Off No network traffic on segment.

Segment Traffic

The traffic bar graphs (located below the port LEDs) provide a quick

reference on the current traffic load relative to the total available 10Mbps or

100Mbps network bandwidth. The graphs display a measure of the

percentage of bandwidth used on the respective network segment. Typically,

a segment showing more than 30% utilization indicates an overloaded

network.

The traffic percentage is determined by counting all data packets, whether

the packets are valid or not.

Connection Guidelines

General

• The 140T is capable of autonegotiating port speed and can operate at

10Mbps or 100Mbps per port. The hub matches the highest possible

speed of an attached device.

• The ports on the 140T hub are half-duplex. The hub cannot connect

to a device at full-duplex.

• To prevent a loop in the network, do not connect the 140T to 10Mbps

and 100Mbps segments simultaneously if the 10Mbps and 100Mbps

segments are bridged externally (through a switch).

Cabling

• Use Category 5 unshielded twisted-pair (CAT 5 UTP) cable when

connecting 100Mbps devices to the hub.

• Use Category 3, 4, or 5 unshielded twisted-pair (CAT 3, 4, 5 UTP)

cable when connecting 10Mbps devices to the hub.

• Limit the cable length between devices to 100 meters.

• Use crossover cables or the daisy-chain port to connect to a hub

or switch.

• Use a straight-through cable to connect the hub to a server or

workstation. For more information on cabling, see pages 8-9.

Bridging Segments

A bridge allows two segments to communicate with each other. Typically, a

bridge connects segments operating at different speeds. The 140T contains

an internal bridge that automatically allows devices operating at 10Mbps to

communicate with devices operating at 100Mbps.

R100Mbps

Daisy-chain

MDI

1 5 10 30 40 50+1 5 10 30 40 50+ Traffic%

10Mbps

Power

10Mbps 100Mbps

Collisions

Port

Activity

Port

Speed

Intel®Express 140T

Standalone Hub

Solid green = Link

Blinking green = Activity

Orange = Autodisabled

Solid Green = 100Mbps

Off = 10Mbps

Class II

91011 12

5678

13 14 15 16

1234

9101112

12345678

13 14 15 16

12345678

13 14 15 16

Connecting to Devices

10Mbps Hub

Server

Shared

Printer

10Mbps

Clients

10 and

100Mbps

Clients

10Mbps

100Mbps

Daisy-chaining Hubs

Normally, to make a hub-to-hub connection you need to use a crossover

cable. The daisy-chain port on the 140T hub is wired MDI so you can use a

straight-through cable to connect the 140T to an MDI-X port on a hub or

switch. When using the daisy-chain port, follow these guidelines:

• Only two hubs (ClassII) can be daisy-chained together.

• The maximum cable length connecting the hubs can’t exceed 5 meters.

205m (max)

5m (max)100m (max) 100m (max)

R100Mbps

Daisy-chain

MDI

1 5 10 30 40 50+1 5 10 30 40 50+

Traffic%

10Mbps

Power 10Mbps 100Mbps

Collisions

Port

Activity

Port

Speed

Intel

Express 140T

StandaloneHub

Solidgreen = Link

Blinkinggreen = Activity

Orange= Autodisabled

SolidGreen = 100Mbps

Off= 10Mbps

Class

91011 12

5678

13 14 15 16

1234

9101112

12345678

13 14 15 16

12345678

13 14 15 16

R100Mbps

Daisy-chain

MDI

1 5 10 30 40 50+1 5 10 30 40 50+

Traffic%

10Mbps

Power 10Mbps 100Mbps

Collisions

Class

Port

Activity

Port

Speed

Solidgreen = Link

Blinkinggreen = Activity

Orange= Autodisabled

SolidGreen = 100Mbps

Off= 10Mbps

Intel

Express 140T

StandaloneHub 56781234

17 18 19 2013 14 15 16

123456789101112

13 14 15 16 17 18 19 20 21 22 23 24

123456789101112

13 14 15 16 17 18 19 20 21 22 23 24

91011 12

21 22 23 24

• Use a straight-through cable to connect from the daisy-chain port on

one hub to any port on the other hub (except the daisy-chain port).

• Don’t connect daisy-chain ports together with a straight-through cable.

• Never daisy-chain a 140T hub with a 100Base-T Class I device (such as

the Express 200 Series Stackable Hubs).

Intel Express 220T

Stackable Hub

Class I

12345678 1718192021222324910111213141516

Managed

Bridged

StatusRPS

Power

Colls100Mbps

Colls10Mbps

Enable/Disable

Bridging

12345678 9101112

Intel Express 220T

Stackable Hub

Class I

Left(Orange/Green)

Orange = 10Mbps

Green = 100Mbps

Solid = Link

Blink = Activity

Right(Yellow)

Solid = Disabled

Blink = Wrong Speed

Left(Orange/Green)

Orange = 10Mbps

Green = 100Mbps

Solid = Link

Blink = Activity

Right(Yellow)

Solid = Disabled

Blink = Wrong Speed

Managed

Bridged

StatusRPS

Power

Colls100Mbps

Colls10Mbps

Enable/Disable

Bridging

R100Mbps

Daisy-chain

MDI

1 5 10 30 40 50+1 5 10 30 40 50+ Traffic%

10Mbps

Power 10Mbps 100Mbps

Collisions

ClassII

Port

Activity

Port

Speed

Solidgreen= Link

Blinkinggreen= Activity

Orange=Autodisabled

SolidGreen= 100Mbps

Off=10Mbps

Intel®Express140T

StandaloneHub 56781234

17 18 19 2013 14 15 16

123456789101112

13 14 15 16 17 18 19 20 21 22 23 24

123456789101112

13 14 15 16 17 18 19 20 21 22 23 24

91011 12

21 22 23 24

Daisy-chain Port

Do not use Port 1 and the Daisy-chain port at the same time. Port 1 and

the daisy-chain port are the same logical port, except their pinouts are

different.

It is also possible to connect from a daisy-chain port on a 140T to a daisy-

chain port on another 140T. However, because the daisy-chain ports are

wired the same (MDI) you will need to use a crossover cable just as if you

were connecting two MDI-X ports together.

Media Requirements

Incorrect cabling is often the cause of network configuration problems.

Read the next two pages if you’re unsure of your requirements.

100Base-TX

The 100Base-TX Fast Ethernet specification requires that you use

CAT 5 UTP cabling to operate at 100Mbps. If you use lower grade cabling

(CAT 3 or CAT 4), you may get a connection, but will soon experience data

loss or slow performance. You’re limited to 100 meters between any two

devices.

10Base-T

The 10Base-T Ethernet specification allows you to use CAT 3, CAT 4, or

CAT 5 UTP cabling. You’re limited to 100 meters between any two devices.

Straight-through vs. Crossover Cables

Hub ports are wired MDI-X, so use a straight-through cable when

connecting to a workstation or server (network adapter cards are wired

MDI). For direct connection to another MDI-X port, use the daisy-chain

port or a crossover cable. Here are the pin arrangements for the hub’s

Ethernet jack and the typical RJ-45 connector.

Testing a cable

A quick way to check a cable’s link integrity is to plug one end into the

daisy-chain port, the other end of into port 2, and check the Activity LEDs

for ports 1 and 2. If the LEDs are on, you have a functioning straight-

through cable.

If the LEDs are off, remove the cable from the daisy-chain port and

reinsert it in port 1. If the Activity LEDs for ports 1 and 2 are on, you

have a functioning crossover cable.

910

Cabling Devices

Pin 1 Pin 8

Clip

Pin 8 Pin 1

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