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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
8
7
6
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
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
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
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
Auto-negotiate
100 Mbps
10 Mbps
Auto-negotiate
Full-duplex
Half-duplex
Ethernet Module
NOTE
In a managed stack of hubs,
the optional Management Mod-
ule 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 daisy-
chain 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.