Cisco GSR12/60 - 12012 Router -AnyLAN, SONET/SDH Installation And Configuration Manual page 142

Connecting Route Processor Cables
Depending on your RJ-45 cabling requirements, use the cable pinouts shown in Figure 3-21
or Figure 3-22.
Figure 3-21
MDI wiring
1 TxD+
2 TxD–
3 RxD+
6 RxD–
Figure 3-22
PRP
1 TxD+
2 TxD–
3 RxD+
6 RxD–
Table 3-8 lists the cabling specifications for 100-Mbps transmission over unshielded
twisted-pair (UTP) cables.
Note
configurable.
3-46 Cisco 12012 Gigabit Switch Router Installation and Configuration Guide
Straight-Through Cable Pinout (Connecting MDI Ethernet Port to
MDI-X Wiring)
MDI-X wiring
1 RxD+
2 RxD–
3 TxD+
6 TxD–
Crossover Cable Pinout (for Connecting Two PRPs)
PRP
1 TxD+
2 TxD–
3 RxD+
6 RxD–
The transmission speed of the Ethernet ports is auto-sensing by default and is user