Specifications

Appendix B: Cables
56
NXA-ENET8POE Gigabit PoE Ethernet Switch
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 the
NXA-ENET8POE, you can use either straight-through or crossover cable to connect to any device type.)
You must connect all four wire pairs as shown in Straight-Through Wiring section on page 56 to support
Gigabit Ethernet connections.
Crossover Wiring
If the twisted-pair cable is to join two ports and either both ports are labeled with an “X” (indicating MDI-X)
or neither port is labeled with an “X” (which indicates MDI), a crossover must be implemented in the wiring.
(When auto-negotiation is enabled for any RJ-45 port on the switch, you can use either straight-through or
crossover cable to connect to any device type.)
You must connect all four wire pairs as shown in FIG. 40 to support Gigabit Ethernet connections.
FIG. 39 Straight-Through Wiring
FIG. 40 Crossover wiring
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