Intel EXPRESS 330T User manual

Intel®Express 330T
Stackable Hub
User Guide

Copyright © 1999, 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 April 1999 732041-001
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.

1
Contents
Express 330T Overview .......................................................................2
Optional Modules .................................................................................3
Understanding 330T Hubs....................................................................4
Port LEDs ......................................................................................4
Hub LEDs......................................................................................5
Crossover Button...........................................................................5
Connecting to Devices..........................................................................6
Connection Guidelines ..................................................................6
Daisy-chaining Hubs .....................................................................7
Stacking Hubs ...............................................................................7
Optional Modules .................................................................................8
Module Functions..........................................................................8
Module A LEDs .............................................................................8
Configuring Modules ....................................................................9
Module B LEDs ............................................................................9
Growing Your Network ........................................................................10
Mixed 10Mbps and 100Mbps .......................................................10
Expanding the Network.................................................................10
Connecting Devices at Full Duplex...............................................11
Extending the Network..................................................................11
Cabling Devices....................................................................................12
Media Requirements .....................................................................12
Straight-through vs. Crossover Cables..........................................12
Testing a Cable ..............................................................................13
FrequentlyAsked Questions.................................................................14
Troubleshooting....................................................................................15
Regulatory Information and Warnings .................................................16
Limited Hardware Warranty .................................................................19
Intel Customer Support................................................Inside Back Cover

2
Features
This guide covers both the 16- and 24-port versions of the Intel®Express
330T Stackable Hub.
Module AModule B
AC Input
100-240 VAC
50Hz-60Hz
1.0A max
Cascade
Up
Down
12345678 9 10111213141516Left
Link= Solid Green
Activity= Blinking Green
Partitioned= Blinking Orange
Right
10Mbps= Solid Orange
100Mbps= Off
Class II
MDI
MDI-X
Link\Activity 10Mbps Status 100Mbps
Managed
DuplexStatus Speed Collisions Module Present
Module A Module B
Intel®Express 330T Stackable Hub
12345678 9 10111213141516 1718192021222324
Class II
Left
Link= Solid Green
Activity= Blinking Green
Partitioned= Blinking Orange
Right
10Mbps= Solid Orange
100Mbps= Off
MDI
MDI-X
Link\Activity 10Mbps Status 100Mbps
Managed
DuplexStatus Speed Collisions Module Present
Module A Module B
Intel®Express 330T Stackable Hub
• Autosensesspeed—10Mbps or100Mbps per port.
• Automaticallybridges 10Mbps and 100Mbps segments.
• Stack up to five Express 330T hubs (mixed 16- or 24-port).
• Two expansion slots for optional management, TX, or FX modules.
• Can be daisy-chained with another Express 330T hub (or any Class II hub) to
expand port density (maximum of two hubs).
Ports
Module A
LEDs
Port LEDs
16-port 330T Hub (Product Code EE330TX16)
24-port 330T Hub (Product Code EE330TX24)
AC Power
Plug
Express 330T Overview
Module A
Expansion Slot
(FX or TX only)
Module B
LEDs Hub LEDs
Back of 16- and 24-port 330T Hubs
Cascade
Connectors
Module B
Expansion Slot
(Management only)
MDI/MDI-X
button

3
Optional Modules
Features
Both the 16- and 24- port versions of the Express 330T Stackable hubs can
accept modules to provide additional functionality.
Ethernet Module (Product Code EE300EM)
Intel
®
Express 300 Series
Ethernet Module
Crossover
MDI
MDI-X
• Connects to devices (such as a switch or server) at full duplex or half duplex.
• Bridges100Mbpssegments to 10Mbps segments.
• Can connect to other switches or hubs without a crossover cable.
• Extends the network diameter by 100 meters.
Fiber Module (Product Code EE300FX)
Intel
®
Express 300 Series Fiber Module
Duplex
TX RX
Half
Full
• Connects to 100Base-FX devices (such as a switch or server) at full or half duplex.
• Extends network diameter up to 160m (half duplex) or 2km (full duplex).
Managment Module (Product Code EE300MM)
Intel
®
Express 300 Series
Management Module
Console: 9600-8-N-1
EIA 232
MAC Address
009027390005
• Manage up to five hubs in a stack (mixed 16- or 24-port).
• Connectto Local Management through serial port or Telnetsession.
• Graphicalweb-based management through the Embedded WebServer.
Change Duplex Button
Fiber Port
Crossover
Button Ethernet Port
Serial Port
MAC Address

4
Understanding 330T Hubs
Port LEDs
The LEDs above each port indicate port status, individual port speed, and
port activity.
5678
LED Status Meaning
Left Solid green Device linked.
Blinking green Receiving activity on that port.
Blinking orange Port auto-disabled (partitioned). See below.
Solid orange Port disabled by management (not applicable
without optional Management Module).
Off No link detected.
Right Solid orange Device connected at 10Mbps.
Off Device connected at 100Mbps.
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 (such as 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.
Left LED
Port Activity
(orange\green)
Right LED
Port Speed
(orange)

5
Hub LEDs
The Express 330T hub LEDs are located above the port LEDs. These LEDs
indicate the condition of the hub, collisions per segment, and whether a
Management Module is present.
10Mbps Status
100Mbps
Managed Collisions
LED Status Meaning
Managed On Hub is managed by the optional
Management Module.
Off Hub is not being managed.
Collisions 10Mbps Blinking Collisions detected on 10Mbps segment.
100Mbps Blinking Collisions detected on 100Mbps segment.
Status On Hub is receiving power.
Off Hub is not receiving power.
Blinking Diagnostics detected a failure on startup.
Module LEDs
The other LEDs on the hub are related to the optional modules. For
additional information about these LEDs, see pages 8 and 9.
Crossover Button
The Express 330T hubs have a button that toggles port 1 from MDI-X to
MDI. This allows you to connect to a switch, or daisy-chain to another
hub, without using a crossover cable. For more information, see pages 6-7
and 12-13.
1234
Class II
MDI
MDI-X
Intel
®
Express 330T Stackab
l
MDI
MDI-X

6
Connection Guidelines
General
• The Express 330T hub is capable of autosensing 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 Express 330T hub are half-duplex. To connect to a
device atfull duplex, you must use the optional Ethernet or Fiber
Modules.
• To prevent a network loop, do not connect the Express 330T hub to the
10Mbps segment and 100Mbps segment simultaneously if the 10Mbps
and 100Mbps segments are bridged externally (through a switch).
• In a stack of Express 330T hubs, only one bridge is active at a time.
If that hub fails or is removed, the next hub automatically provides
bridging for the entire stack.
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, or 5 UTP)
cable when connecting 10Mbps devices to the hub.
• Limit the cable length between devices to 100 meters.
• Use a straight-through cable to connect the hub to a server or workstation.
For more information on cabling, see pages 12 and 13.
• To connect to a hub or switch use crossover cables, or port 1 set to MDI.
Daisy-chaining Hubs
The MDI/MDI-X button allows the Express 330T hub to connect to other
hubs and switches using straight-through cables (instead of crossover cables).
All ports on the hub are MDI-X, and the button is used to toggle port 1 to
MDI. When using this feature, follow these guidelines:
• Only two hubs (Class II) can be daisy-chained together.
• The maximum cable length connecting the hubs can’t exceed 5 meters.
• Never daisy-chain an Express 330T hub to a 100Base-T Class I hub
(such as the Intel®Express 220T or 210T Stackable Hubs).
Connecting to Devices
Note: For best perfor-
mance use the shortest
cablespossible.

7
MDI/
MDI-X
Collisions
ModuleA ModuleB
Intel®Express330T Stackable Hub
MDI/
MDI-X
Collisions
ModuleA ModuleB
Intel®Express330T Stackable Hub
205m (max)
5m (max)100m (max) 100m (max)
• Use a straight-through cable to connect from port 1 on a hub to any
port on the other hub.
Stacking Hubs
The Express 330T hub uses a unique set of connectors on the back of the
hubs so they can be stacked together. By stacking hubs you can:
• Increase the number of available ports, yet still treat the stack as a
single repeater.
• Use a single Management Module to manage all hubs in the stack.
• Use the hub’s internal bridge so 10Mbps and 100Mbps segments can
communicate.
Guidelines
• You must use the included cascade cable to stack the hubs.
• A stack can consist of any combination of Express 330T hubs (16- or 24-
port versions).
• You can stack up to five Express 330T hubs.
• When cabled correctly, the top hub in a stack is numbered hub 1.
• If there is more than one hub in a stack, only one bridge is active at a
time. The lowest numbered hub (top of the stack) is the active bridge.
• All devices at the same speed are in the same segment (collision domain).
For example, all devices at 10Mbps are in one segment and all devices at
100Mbps are in another.
Module AModule B
AC Input
100-240 VAC
50Hz-60Hz
1.0A max
Cascade
Up
Down
Module AModule B
AC Input
100-240 VAC
50Hz-60Hz
1.0A max
Cascade
Up
Down
Module AModule B
AC Input
100-240 VAC
50Hz-60Hz
1.0A max
Cascade
Up
Down
Connect the cacade
cables to the hubs as
shown in the diagram.
Hub 1
Hub 2
Hub 3
Cascade Cable

8
Optional Modules (TX & FX)
Module Functions
The Ethernet and Fiber Modules act as a switched port when plugged into
an Express 330T Hub. The modules enable the hubs to:
• Connect to another device at full duplex (such as a server or switch).
• Expand network diameter (TX: 100m, FX: 160m-2km).
• Bridge 10Mbps and 100Mbps segments.
• Create separate collision domains.
The Modules are installed in the Module A slot on the back of the hub. You
can install a module for each hub in a stack. The Express 330T will not
accept modules from the Express 200 series hubs.
Module A LEDs
The LEDs are located on the front of the hub over ports 9-16. These LEDs
provide information about the Fiber or Ethernet module such as the
module’s status, port activity, speed, and duplex mode.
89 1011121314151
6
Link\Activity DuplexStatus Speed
Module A
LED Status Meaning
Status On (green) Module is present and functioning.
Off No module present.
Link\Activity Solid green Device linked.
Blinking green Receiving activity on that port.
Off No link detected.
Duplex On (green) Module is connected at full duplex.
Off Module is connected at half duplex.
Speed On (orange) Device connected at 10Mbps.
Off Device connected at 100Mbps.