Dual-Speed Stackable Hubs User’s Guide
Making Connections28
DEVICE PORT
USED
DEVICE BEING
CONNECTED
PORT
TYPE
CABL
E TO USE
Hub or
Normal Crossover (X)
Normal
Switch
Uplink Straight-Through (||)
Hub
Server (or PC) Straight-Through (||)
Hub or
Normal Straight-Through (||)
Uplink
Switch
Uplink Crossover (X)
Server (or PC) Crossover (X)
A crossover cable is a twisted-pair cable in which the wires have been
crossed. The figure below shows the pin assignments for an Ethernet or Fast
Ethernet crossover cable:
NOTE:
The port 1
1X
jack shares its circuitry with the
Uplink
jack. If you connect a hub to the
Uplink
jack, you cannot plug anything into the
1X
jack. And the reverse is also true; if any-
thing is plugged into the
1X
jack, the
Uplink
jack cannot be used.
When uplinking two dual-speed or Fast Ethernet hubs or hub stacks in this
fashion, the maximum distance between any two end-stations in a collision
domain is 205 meters. If the length of the longest hub to end-station connec-
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