CHAPTER B Cables

Twisted-Pair Cable and Pin Assignments

Figure 26: Straight-through Wiring

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

 

 

 

 

 

 

White/Orange Stripe

 

 

 

 

 

 

 

 

 

Orange

 

 

 

End A

1

W hite/Green Stripe

1

 

 

 

 

2

Blue W hite/Blue

2

 

End B

 

 

 

 

3

 

3

 

 

 

 

 

 

4

Stripe Green

4

 

 

 

 

 

 

 

5

5

 

 

 

 

 

 

6

W hite/Brown Stripe

6

 

 

 

 

 

 

 

 

 

 

7

7

 

 

 

 

 

 

 

 

 

 

 

8

 

8

 

 

Brown

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.)

You must connect all four wire pairs as shown in the following diagram to support Gigabit Ethernet.

Figure 27: Crossover Wiring

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

 

 

 

 

 

 

W hite/Orange Stripe

 

 

 

 

 

 

 

 

 

Orange

 

 

 

End A

1

W hite/Green Stripe

1

 

 

 

 

2

Blue W hite/Blue

2

 

End B

 

 

 

 

3

 

3

 

 

 

 

 

 

4

Stripe Green

4

 

 

 

 

 

 

 

5

 

5

 

 

 

 

 

 

6

W hite/Brown Stripe

6

 

 

 

 

 

 

 

 

 

 

7

7

 

 

 

 

 

 

 

 

 

 

 

8

 

8

 

 

Brown

– 73 –

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Black Box LGB6000SC-001, LGB6001C, LGB6000SC-004, LGB6026A, LGB6050A manual Crossover Wiring, Straight-through Wiring