Intel NetportExpress 10 PCLA2152B, EE110TX12, EE110TX24 User Manual
Intel Express
10/100 Stackable Hub
User Guide
Copyright © 1997, 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 1997 662204-001
This guide covers the following products:
Intel Express 10/100 Stackable Hub - 12-port TX hub. Product code EE110TX12.
Intel Express 10/100 Stackable Hub - 24-port TX hub. Product code EE110TX24.
1
Quick Start
1. Install the Express 10/100 Stackable Hub in a rack or on a shelf or table,
plug it in, and turn the power on.
2. Connect either 100BASE-TX devices or 10BASE-T devices to the ports.
3. Check the LEDs for links. You’re done.
Next steps (Optional)
Continue to the next page if you want to connect multiple hubs.
Rack: Use the four small screws to attach
the brackets to the hub. Use the four large
screws (not shown) to attach the hub to
the rack.
Shelf: Attach the four rubber feet to the
bottom before placing on a shelf or table.
The default hub speed is 100 Mbps. Press
Change Hub Speed to operate at 10 Mbps.
All ports operate at the same speed
For this connection Use this cable
Hub to server or workstation Straight-through TPE
Hub to print server Straight-through TPE
Hub to switch Crossover TPE
Hub to hub (10 Mbps only) Crossover TPE
Use Category 5 (CAT 5)
twisted-pair Ethernet
(TPE) cabling for 100
Mbps connections. Use
CAT 3, 4, or 5 TPE for
10 Mbps connections.
Cable distance can’t
exceed 100 meters
whether running at 10 or
100 Mbps.
Do not configure
attached devices for fullduplex. Hubs aren’t
capable of full-duplex.
On solid indicates a valid
link (may take up to 6
seconds). Blinking
indicates activity on the
port.
Should normally be off. Blinking indicates a
speed mismatch. For example, the hub is
operating at 100 Mbps, but a 10 Mbps device
is connected to the port. See pages
10-11 for detailed descriptions.
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
161514
13
17 18
19 24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
Green LED
(left side)
Amber LED
(right side)
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
8
7
6
5
910
11
12
16
15
14
13
17 18
19 24
23
22
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
2
(Optional) Connecting multiple hubs
Connecting hubs running at 100 Mbps to hubs running at 10 Mbps
Use an Intel Cascade Cable to connect the hubs. Hubs running at 100 Mbps can talk to each other,
and hubs running at 10 Mbps can talk to each other. However, hubs running at 100 Mbps can’t talk
to hubs running at 10 Mbps without bridging equipment. See pages 5-7 for more information.
Connecting hubs running at 100 Mbps
Use an Intel Cascade Cable to connect the hubs. You can connect a maximum of eight hubs. See
page 4 for more information.
Connecting hubs running at 10 Mbps
Use an Intel Cascade Cable to stack the hubs or daisy-chain the hubs with TPE cable. All hubs in a
stack share 10 Mbps of bandwidth and count as one repeater hop. Hubs connected with TPE cable
count as two repeater hops. See page 4 for more information.
or
Never connect hubs running at 100 Mbps
with TPE cable. Doing so violates the IEEE
802.3u Fast Ethernet standard for Class I
hubs.
Connect hubs with CAT 3, 4, or 5 TPE cable.
Limit distance to 100 meters.
Hubs 1 and 2 are in one collision domain and
share 100 Mbps of bandwidth.
Hubs 3 and 4 are in a separate collision domain
from 1 and 2 and share 10 Mbps of bandwidth.
The optional bridging equipment allows hubs 1
and 2 to talk to hubs 3 and 4.
Connect hubs with an Intel Cascade Cable
(product code EE110CC)
Hub 1
Hub 2
Connect hubs with an Intel Cascade Cable
(product code EE110CC)
Hub 1
Hub 2
Connect hubs with an Intel Cascade Cable
(product code EE110CC)
Category 5 TPE (100m max.)
Category 3, 4, or 5 TPE (100m max.)
Hub 1 (100 Mbps)
Hub 2 (100 Mbps)
Hub 3 (10 Mbps)
Hub 4 (10 Mbps)
12
3
4
Change hub speed
10BASE-T
100BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
161514
13
17 18
19 24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
161514
13
17 18
19 24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
161514
13
17 18
19 24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
Optional bridging
equipment
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
161514
13
17 18
19 24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
161514
13
17 18
19 24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
33
Overview
This guide covers both the 12- and 24-port versions of the Intel Express 10/100 Stackable Hub.
• Intel product code: EE110TX12 • Intel product code: EE110TX24
• 12 fixed TPE ports • 24 fixed TPE ports
• Stack eight hubs (mixed 12- or 24-port) • Stack eight hubs (mixed 12- or 24-port)
• Hub management through optional • Hub management requires a 12-port
Management Module (product code EE110MM) 10/100 Stackable Hub in same stack
• Bridging or full-duplex support through optional
Ethernet Module (product code EE110EM)
• 100BASE-FX support through optional
Fiber Module (product code EE110FX)
Contents
Overview ..................................................................................................................................................3
Connection Guidelines ............................................................................................................................. 4
Example Configurations .......................................................................................................................... 5
Mixed 10 Mbps and 100 Mbps environment ...................................................................................5
100 Mbps-only environment ............................................................................................................ 7
10 Mbps-only environment .............................................................................................................. 8
Understanding LEDs .............................................................................................................................. 10
Port LEDs........................................................................................................................................ 10
Unit LEDs .......................................................................................................................................11
Cabling Requirements ............................................................................................................................ 12
100BASE-TX requirements ............................................................................................................ 12
10BASE-T requirements ................................................................................................................ 12
100BASE-FX requirements ............................................................................................................ 12
Straight-through vs. crossover cables............................................................................................. 13
Troubleshooting .....................................................................................................................................14
Frequently Asked Questions ..................................................................................................................15
Warranty.................................................................................................................................................17
Intel Automated Customer Support .......................................................................................................20
12
3
4
Change hub speed
10BASE-T
100BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
161514
13
17 18
19 24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
4
Connection Guidelines
Connecting 100BASE-TX devices
• Use Category 5 twisted-pair Ethernet (CAT 5 TPE) cable.
• Always limit the distance between devices connected with TPE
cable to 100 meters (the IEEE specification requires this).
• Use a crossover cable to connect the hub to a switch. Use a
straight-through cable to connect the hub to a server or
workstation. See pages 12-13 for more information on cabling.
• Never connect two hubs operating at 100 Mbps with TPE cabling
(this violates the IEEE 802.3u Fast Ethernet specification for
Class I hubs). You must use an Intel Cascade Cable.
• Never connect a device to the hub at full-duplex. Only the
optional Ethernet Module or Fiber Module supports full-duplex.
Connecting 10BASE-T devices
• Use Category 3, 4, or 5 twisted-pair Ethernet (CAT 3, 4, or 5
TPE) cable.
• Use a crossover cable to connect a hub to another hub or a switch.
Use a straight-through cable to connect a hub to a server or
workstation. See pages 12-13 for more information on cabling.
• Follow the 5-4-3-2-1 general rule when daisy-chaining 10 Mbps
hubs. See page 9 for more information.
• Always limit the distance between devices connected with TPE
cable to 100 meters (the IEEE specification requires this).
• Use an Intel Cascade Cable to connect hubs when:
- you want all hubs in the stack to count as a single repeater.
- you want to use a single Management Module to manage all
hubs in the stack.
• Never connect a device to the hub at full-duplex. Only the
optional Ethernet Module or Fiber Module supports full-duplex.
NOTE
The acronym TPE (twisted-pair
Ethernet) refers to Category 3,
4, or 5 unshielded twisted-pair
(UTP) cabling or Category 5
shielded twisted-pair (STP)
cabling.
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
87659 10
11
12
161514
13
17 18
19
24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
1 2
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
8765910
11
12
161514
13
17 18
19
24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
OK
No!
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
87659 10
11
12
161514
13
17 18
19
24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
1 2
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
8765910
11
12
161514
13
17 18
19
24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
OK
OK
100 Mbps hubs
100 Mbps hubs
10 Mbps hubs
10 Mbps hubs
5
Example Configurations
Mixed 10 Mbps and 100 Mbps
environment
A stack of Express 10/100 Stackable Hubs can contain hubs running
at both 10 and 100 Mbps. However, the hubs running at 10 Mbps and
the hubs running at 100 Mbps are on separate network segments.
These two segments can’t communicate with each other unless you
use another device to bridge them.
There are several ways to bridge the 10 Mbps and 100 Mbps
segments:
• Use the optional Intel Express Stackable Hub Ethernet Module
(product code EE110EM).
• Use a switch capable of both 10 Mbps and 100 Mbps operation,
such as the Intel Express 10/100 Fast Ethernet Switch (product
code ES101TX).
• Use a server with two 10/100 adapters installed.
• Use the Intel Express 10/100 Downlink (product code EC100DL).
• Use a router capable of both 10 Mbps and 100 Mbps operation
(not described here).
Bridging with the Intel Express Stackable Hub
Ethernet Module (sold separately)
The Ethernet Module plugs into the expansion slot of a 12-port hub
running at either 10 Mbps or 100 Mbps. Simply plug the module into
a hub running at one speed and connect to a hub running at the other
speed, and the Ethernet Module bridges the two collision domains.
Express 10/100
Stackable Hubs
Hub 1 (100 Mbps)
Hub 2 (100 Mbps)
Hub 3 (10 Mbps)
Hub 4 (10 Mbps)
Category 3, 4, or 5 TPE
12
3
4
Change hub speed
10BASE-T
100BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
161514
13
17 18
19 24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
161514
13
17 18
19 24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
12
3
4
Change hub speed
10
BASE-T
100
BASE-TX
Power
Intel Express
10/100 Stackable Hub
Collision
Managed
Status
876
5
910
11
12
161514
13
17 18
19 24 2322
21
20
Green (left)
Link = solid
Activity = blink
Amber (right)
Wrong speed = blink
Disabled = solid
Auto-negotiate
100 Mbps
10 Mbps
Auto-negotiate
Full-duplex
Half-duplex
Ethernet Module
NOTE
In a managed stack of hubs,
the optional Management Module can communicate with all
hubs, regardless of speed.
Intel Cascade Cable
(product code EE110CC)
NOTE
You must use an Intel Cascade
Cable to connect hubs running
at 100 Mbps. Do not daisychain hubs with TPE crossover
cabling.
If you plug the Ethernet Module
into a hub running at 100 Mbps,
connect it to a hub running at
10 Mbps with CAT 3, 4, or 5
TPE.
If you plug the Ethernet Module
into a hub running at 10 Mbps,
connect it to a hub running at
100 Mbps with CAT 5 TPE.
The Ethernet Module acts
as a switch port plugged
into a hub. It has the added
benefit of connecting to a
switch or server configured
at full-duplex.
This is the only time you can
connect an Express 10/100
Stackable Hub to a device
at full-duplex.
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