SMC Networks TigerSwitch 10 SMC6724L3, Installation Manual

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C
ABLES
B-4
Straight-Through Wiring
If the twisted-pair cable is to join two ports and only one of the ports has
an internal crossover (MDI-X), the two pairs of wires must be
straight-through. (When auto-negotiation is enabled for any RJ-45 port on
this switch, you can use either straight-through or crossover cable to
connect to any device type).
Crossover Wiring
If the twisted-pair cable is to join two ports and either both ports are
labeled with an "X" (MDI-X) or neither port is labeled with an "X" (MDI),
a crossover must be implemented in the wiring. (When auto-negotiation is
enabled for any RJ-45 port on this switch, you can use either
straight-through or crossover cable to connect to any device type).
Straight-Through RJ-45 Pin Assignments
End 1 End 2
1 (RD+) 1 (TD+)
2 (RD-) 2 (TD-)
3 (TD+) 3 (RD+)
6 (TD-) 6 (RD-)
Crossover RJ-45 Pin Assignments
End 1 End 2
1 (TD+) 1 (RD+)
2 (TD-) 2 (RD-)
3 (RD+) 3 (TD+)
6 (RD-) 6 (TD-)