Traffic Card Cables
A-6
SmartEdge 1200 Router Hardware Guide
The choice of an Ethernet straight or crossover cable for a port on the 10/100 Ethernet card depends on the
equipment to which it is being connected; see Table A-9.
Pin Assignments
Pin assignments for the 10/100 ports on the Ethernet and FE-GE cards are included in this section:
• 10/100 Ethernet Crossover Cable
• 10/100 Ethernet Straight Cable
• Fast Ethernet Breakout Cable
10/100 Ethernet Crossover Cable
Both ends of this shielded and grounded cable are terminated in standard RJ-45 eight-pin modular plugs.
Table A-10 lists the pin assignments.
Table A-9
Cable Options for a 10/100 Ethernet Traffic Card
Configuration
Cable Type
Port is connected to a router.
Straight
Port is connected to a switch.
Crossover
Port is connected to a 10/100 Ethernet port in another
SmartEdge router.
Crossover
Note
The 10/100 Ethernet traffic card wiring is cross-connected like a switch or hub; this condition
is denoted with the label “X” by each port.
Table A-10
10/100 Ethernet Crossover Cable Pin Assignments
Other End
#
Signal Name
Pin
Notes
1.
Rx (+)
3
–
2.
Rx (–)
6
–
3.
Tx (+)
1
–
4.
–
–
Termination network
5.
–
–
Termination network
6.
Tx (–)
2
–
7.
–
–
Termination network
8.
–
–
Termination network
