Twisted-Pair Cable And Pin Assignments; Straight-Through Wiring; Crossover Wiring; Figure B-2 Straight-Through Wiring - SMC Networks SMC TigerSwitch 10/100 SMC6128L2 Installation Manual

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

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 connections.
T
EIA/TIA 568B RJ-45 Wiring Standard
10/100BASE-TX Straight-through Cable
White/Orange Stripe
White/Green Stripe
1
2
3
4
5
6
7
8

Figure B-2 Straight-through Wiring

-P C
WISTED AIR ABLE AND
Orange
Blue
White/Blue Stripe
Green
White/Brown Stripe
Brown
P A
IN SSIGNMENTS
1
2
End B
3
4
5
6
7
8
B-3