T

WISTED

-P

AIR

C

ABLE

AND

P

IN

A

SSIGNMENTS

B-3Straight-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

these switches, 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 the following diagram to

support Gigabit Ethernet connect ions.

Figure B-2 Straight-throug h Wiring

White/OrangeStripe
Orange
White/GreenStripe
Green
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
EIA/TIA568B RJ-45 Wiring Standard
10/100BASE-TX Straight-throughCable
EndAEnd B
Blue
White/BlueStripe
Brown
White/BrownStripe