SMC Networks SMC6724L3 INT B-4, Straight-Through Wiring, Crossover Wiring

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.)
Figure B-2. Straight-through Wiring
Crossover Wiring
If the twisted-pair cable is to join two ports and either both por ts 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.)
Figure B-3. Crossover Wiring
White/OrangeStripe
Orange
White/GreenStripe
Green
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8
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8
EIA
/
TIA568B RJ-45 Wiring
S
tandard
10/100BASE-TXStraight-through Cable
EndA EndB
White/OrangeStripe
Orange
White/GreenStripe
Green
1
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8
1
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EIA
/
TIA568B RJ-45 Wiring
S
tandard
10/100BASE-TXCrossover Cable
EndA EndB