Cisco 7206 - VXR Router - Page 87

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Cisco 7206 Installation and Configuration Guide
OL-5102-02
Chapter 3 Installing the Cisco 7206
Connecting I/O Controller Cables
Note With reference to the RJ-45 pinout in Table 3-4, proper common-mode line terminations should be used
for the unused Category 5 UTP cable pairs 4/5 and 7/8. Common-mode line termination reduces
electromagnetic interference (EMI).
Depending on your I/O controller RJ-45 interface cabling requirements, use the pinouts shown in
Figure 3-18 and Figure 3-19 for straight-through and crossover twisted-pair cable connections.
Figure 3-18 Straight-Through Cable Pinout, I/O Controller RJ-45 Connection to an End Station or DTE
Figure 3-19 Crossover Cable Pinout, I/O Controller RJ-45 Connection to an End Station or DTE
To identify the RJ-45 cable type, hold the two ends of the cable next to each other so you can see the
colored wires inside the ends, as shown in Figure 3-20.
Table 3-4 RJ-45 Port Pinout
Pin Description
1 Receive Data + (RxD+)
2RxD–
3 Transmit Data + (TxD+)
6TxD–
End stationEthernet port
3 TxD+
6 TxD–
1 RxD+
2 RxD–
3 RxD+
6 RxD–
1 TxD+
2 TxD–
H10416
Ethernet port
3 TxD+
6 TxD–
1 RxD+
2 RxD–
3 TxD+
6 TxD–
1 RxD+
2 RxD–
H10417
Hub