Intel 220T, 210T User Manual

Intel Express
220T and 210T
Stackable Hubs

User Guide

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.

Copyright © 1998, Intel Corporation. All rights reserved.
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 May 1998 694466-001

Contents

220T and 210T Overview .....................................................................2

Feature Comparison..............................................................................3

Understanding 220T Hubs.................................................................... 4

220T Port LEDs.............................................................................4

220T Hub LEDs ............................................................................5

Understanding 210T Hubs.................................................................... 6

210T Port LEDs.............................................................................6

210T Hub LEDs ............................................................................7

Connecting to Devices..........................................................................8

Connection Guidelines .................................................................. 8

Stacking Hubs.......................................................................................9

Why Stack? ................................................................................... 9

Bridging Segments ...............................................................................10

Bridging 220T Hubs...................................................................... 10

Bridging 210T Hubs...................................................................... 11

Cabling Devices....................................................................................12

Media Requirements ..................................................................... 12

Straight-through vs. Crossover Cables.......................................... 12

Frequently Asked Questions ................................................................. 14

Regulatory Information and Warnings .................................................16

Hardware W arranty...............................................................................18

Troubleshooting....................................................................................20

Intel Customer Support.........................................................................21

1

220T and 210T Overview

Features

This guide covers both the 12- and 24-port versions of the Intel® Express
220T Stackable Hub and the Express 210T Stackable Hub (formerly known
as the Express 10/100 Stackable Hub).

12-port 220T Hub

Intel Express 220T
Stackable Hub

Colls 10Mbps

Bridged

12345678 9101112

Class

I

Left (Orange/Green)
Orange = 10Mbps
Green = 100Mbps
Solid = Link
Blink = Activity
Right (Yellow)
Solid = Disabled
Blink = Wrong speed

Colls 100Mbps
RPS

Managed
Status

Power

Enable/Disable
Bridging

Port LEDs

Expansion

Slot

Ports

24-port 220T Hub

12-port 210T Hub

12345678 9101112

24-port 210T Hub

Class

I

Left (Green)
Solid = Link
Blink = Activity

Right (Yellow)
Solid = Disabled
Blink = Wrong speed

Hub LEDs

Hub LEDs

Intel Express 220T
Stackable Hub

Colls 10Mbps
Colls 100Mbps

Managed
Status

RPS

Intel Express 210T
Stackable Hub

Change Hub Speed

10Base-T

Collision

100Base-TX

Managed
Status

Intel Express 210T
Stackable Hub

Change Hub Speed

10Base-T

Collision

100Base-TX

Managed
Status

Bridging
Button

PowerBridged

Enable/Disable
Bridging

Left (Orange/Green)

24232219 212016 17 1810 11 12 151413876549123

Orange = 10Mbps
Green = 100Mbps
Solid = Link
Blink = Activity
Right (Yellow)
Solid = Disabled

I

Class

Blink = Wrong speed

Power

Change Speed
Button

Power

24232219 212016 17 1810 11 12 151413876549123

Left (Green)
Solid = Link
Blink = Activity

Right (Yellow)
Solid = Disabled
Blink = Wrong speed

Class

I

Input

100-120VAC/2.5A
200-240VAC/1.5A
47Hz-63Hz

Redundant Power Supply (RPS)

Fan AC

Power

Plug

RPS
Connector

(220T Hubs only)

Cascade
Connectors

2

Feature Comparison

Change
duplex

Ethernet Module

MDI

MDI-X

Auto-negotiate

Full-duplex

Half-duplex

Change
duplex

Auto-negotiate

100 Mbps

10 Mbps

Coll

or

Xmt Link

Rcv Coll

TX RX

Fiber Module

Change
duplex

Half-duplex

Full-duplex

Express 220T (EE220TX12) Express 220T (EE220TX24)

Intel Express 220T
Stackable Hub

Colls 10Mbps

Bridged

Power

Colls 100Mbps

Managed

Enable/Disable
Bridging

Status

12345678 9101112

Left (Orange/Green)
Orange = 10Mbps
Green = 100Mbps
Solid = Link
Blink = Activity
Right (Yellow)
Solid = Disabled

I

Class

Blink = Wrong speed

RPS

• 12 ports, autosensing 10Mbps or • 24 ports, autosensing 10Mbps or
100Mbps

per port

100Mbps

per port

• Bridges 10Mbps and 100Mbps segments • Bridges 10Mbps and 100Mbps segments

• Supports Redundant Power Supply (RPS) • Supports Redundant Power Supply (RPS)

• Two expansion slots for optional modules

Express 210T (EE210TX12) Express 210T (EE210TX24)

Intel Express 210T
Stackable Hub

Change Hub Speed

10Base-T

Power

Collision

100Base-TX

Managed

12345678 9101112

•

All

12 ports operate at same •

Left (Green)
Solid = Link
Blink = Activity

Right (Yellow)
Solid = Disabled
Blink = Wrong speed

Class I

Status

All

24 ports operate at same

speed (10 or 100Mbps) speed (10 or 100Mbps)

• Two expansion slots for optional modules

Intel Express 220T
Stackable Hub

Colls 10Mbps
Colls 100Mbps
RPS

Intel Express 210T
Stackable Hub

Change Hub Speed

10Base-T
100Base-TX

PowerBridged

Managed

Enable/Disable
Bridging

Status

Left (Orange/Green)

24232219 212016 17 1810 11 12 151413876549123

Orange = 10Mbps
Green = 100Mbps
Solid = Link
Blink = Activity
Right (Yellow)
Solid = Disabled

I

Class

Blink = Wrong speed

Power

Collision
Managed
Status

24232219 212016 17 1810 11 12 151413876549123

Left (Green)
Solid = Link
Blink = Activity
Right (Yellow)
Solid = Disabled
Blink = Wrong speed

Class I

Common Features and Optional Modules

• Stack up to eight hubs (mixed 12- or 24-port)

• Compatible with Express 10/100 Stackable Hub

• Mix 220T, 210T, and Express 10/100 hubs in a stack

• Full-duplex support through the optional Ethernet Module.

• 100Base-FX support and full-duplex support through the optional Fiber Module.

• SNMP, RMON, and web-based management through the optional Management Module.

Management

Module

with RMON

Esc

Reset

3

Understanding 220T Hubs

220T Port LEDs

The LEDs above each port provide information about the port’s
configuration and status.

Left side:
Orange/
Green

LED Status Meaning

Left Solid orange Device linked at 10Mbps.

Right Solid yellow Port disabled by management (not applicable

Solid green Device linked at 100Mbps.
Blinking orange Receive activity at 10Mbps.
Blinking green Receive activity at 100Mbps.
Off No link detected.

without optional Management Module).

Blinking yellow Speed mismatch (not applicable without

optional Management Module).
Erratic blinking yellow Port auto-disabled (partitioned). See below.
Blinking yellow and Out-of-specification cabling or port hardware

Status LED blinking problem. Try a different cable.

Right side:
Yellow

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 sees a valid packet of data from the device or is able to
transmit data to the port, 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, segment so that fewer devices share the fixed amount
of bandwidth.

4

220T Hub LEDs

The hub LEDs on the 220T indicate these conditions: collisions, status of
internal bridging, if the hub is managed, and the condition of the hub’s
power supply.

Intel Express 220T
Stackable Hub

Colls 10Mbps
Colls 100Mbps
RPS

Bridged
Managed
Status

Power

Enable/Disable
Bridging

LED Status Meaning

Colls 10Mbps Blinking Collisions detected on 10Mbps segment.
Colls 100Mbps Blinking Collisions detected on 100Mbps segment.

RPS On (green) Optional RPS is present and on standby.

Off No RPS unit present.
On (red) RPS is active; hub power supply failed.

Bridged On 10Mbps and 100Mbps segments can

communicate.

Off No communication between segments.

Managed On Hub is managed by the optional

Management Module.

Off Hub is not managed.

Status On Hub is operating normally.

Blinking Hub has an internal hardware orsoftware

problem. See descriptions for the right
port LED on page 4.

Managed and Status Blinking Hub failed to load its internal software.
Power On Hub is receiving power.

Off Hub is not receiving power.

5

Understanding 210T Hubs

210T Port LEDs

The LEDs above each port provide information about the port’s
configuration and status.

Left side:
Green

LED Status Meaning

Left Solid green Port has a link.

Blinking green Receive activity at port.
Off No link detected.

Right Solid yellow Port disabled by management (not applicable

without optional Management Module).
Blinking yellow Speed mismatch. Check that device speed

and hub speed match.
Erratic blinking yellow Port auto-disabled (partitioned). See below.
Blinking yellow and Out-of-specification cabling or port hardware

Status LED blinking problem. Try a dif ferent cable.

Right side:
Yellow

Partitioned ports

A port is automatically disabled (partitioned off) by the hub when an invalid
condition occurs, such as too many consecutive collisions.

Once the hub sees a valid packet of data from the device, or is able to
transmit data to the port, 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, segment so that fewer devices share the fixed amount
of bandwidth.

6