Cisco 7206VXR Configuration Guide - Page 128

Ethernet and Fast Ethernet Straight-Through Cable Pinout, Ethernet Port to a Hub or

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Connecting I/O Controller, NPE-G1, or NPE-G2 Cables Chapter 3 Installing a Cisco 7200 VXR Router Figure 3-23 Ethernet port 1 TxD+ 2 TxD- Ethernet and Fast Ethernet Straight-Through Cable Pinout, Ethernet Port to a Hub or Repeater Hub 1 RxD+ 2 RxD- 38582 3 RxD+ 6 RxD- 3 TxD+ 6 TxD- Figure 3-24 Ethernet port 1 TxD+ 2 TxD- Ethernet and Fast Ethernet Crossover Cable Pinout, Ethernet Port to a DTE DTE 1 TxD+ 2 TxD- 38583 3 RxD+ 6 RxD- 3 RxD+ 6 RxD- To determine whether a UTP cable is a crossover cable or a straight-through cable, hold the two RJ-45 connectors next to each other so you can see the colored wires inside the ends, as shown in Figure 3-25. Figure 3-25 Crossover or Straight-Through Cable Identification H5663 Examine the sequence of colored wires to determine the type of cable, as follows: • Straight-through-The colored wires are in the same sequence at both ends of the cable. • Crossover-The first (far left) colored wire at one end of the cable is the third colored wire at the other end of the cable. 3-32 Cisco 7200 VXR Installation and Configuration Guide OL-5013-09

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3-32
Cisco 7200 VXR Installation and Configuration Guide
OL-5013-09
Chapter 3
Installing a Cisco 7200 VXR Router
Connecting I/O Controller, NPE-G1, or NPE-G2 Cables
Figure 3-23
Ethernet and Fast Ethernet Straight-Through Cable Pinout, Ethernet Port to a Hub or
Repeater
Figure 3-24
Ethernet and Fast Ethernet Crossover Cable Pinout, Ethernet Port to a DTE
To determine whether a UTP cable is a crossover cable or a straight-through cable, hold the two RJ-45
connectors next to each other so you can see the colored wires inside the ends, as shown in
Figure 3-25
.
Figure 3-25
Crossover or Straight-Through Cable Identification
Examine the sequence of colored wires to determine the type of cable, as follows:
•
Straight-through—The colored wires are in the same sequence at both ends of the cable.
•
Crossover—The first (far left) colored wire at one end of the cable is the third colored wire at the
other end of the cable.
Ethernet port
Hub
1 TxD+
2 TxD–
3 RxD+
6 RxD–
1 RxD+
2 RxD–
3 TxD+
6 TxD–
38582
Ethernet port
1 TxD+
2 TxD–
3 RxD+
6 RxD–
1 TxD+
2 TxD–
3 RxD+
6 RxD–
38583
DTE
H5663