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1
Must be a twisted-pair
Must be a twisted-pair
NOTE
TPE crossover cables can be
used only to daisy-chain hubs
running at 10 Mbps.
You can't use TPE crossover
cables to daisy-chain hubs run-
ning at 100 Mbps. You must
use an Intel Cascade Cable.
Straight-through vs. crossover cables
Ports on the hub are wired MDI-X (media dependent interface
crossover) so you can use a straight-through cable when connecting to
a workstation or server (network adapter cards are wired MDI). For
direct connection to another MDI-X port (hub and switch ports), you
must use a crossover cable.
SCHEMATICS FOR STRAIGHT & CROSSOVER TWISTED-PAIR
Straight-Through
Hub
1 RX +
2 RX -
3 TX +
6 TX-
Determining which cable to use
The following guidelines are based on the Express 10/100 Stackable
Hub, the Intel 10/100 Fast Ethernet Switch, the Intel EtherExpress™
family of network adapters (server or workstation), and the
NetportExpress™ family of print servers. These guidelines apply
to the majority of hubs and switches and all servers, workstations,
or print servers.
For this connection
Hub to switch
Hub to hub (10 Mbps only)
Hub to server or workstation
Hub to print server
CABLE
Adapter
Hub
1 TX +
1 RX +
2 TX -
2 RX -
3 RX +
3 TX +
6 RX -
6 TX-
Crossover
Hub/Switch
1 RX+
2 RX -
3 TX +
6 TX -
Use this cable
Crossover
Crossover
Straight-through
Straight-through
13
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