CABLES

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 the following diagram to support Gigabit Ethernet connections.

EIA/TIA 568B RJ-45 Wiring Standard 10/100BASE-TX Crossover Cable

 

 

White/Orange Stripe

 

 

 

Orange

 

 

1

White/Green Stripe

1

End A

2

 

2

 

3

Blue

3

 

4

 

4

 

5

White/Blue Stripe

5

 

6

Green

6

 

7

7

 

8

White/Brown Stripe

8

 

 

 

End B

Brown

Figure B-3 Crossover Wiring

B-4

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Image 98
SMC Networks SMCGS24C-Smart manual Figure B-3 Crossover Wiring