Chapter 3 Installing the Router

Connecting the PRP to an Ethernet Network

Figure 3-13 Crossover Cable Pinout (for Connecting Two PRPs)

PRP

1TxD+

2TxD–

3RxD+

6RxD–

PRP

1TxD+

2TxD–

3RxD+

6RxD–

75431

Table 3-4lists the cabling specifications for 100-Mbps transmission over unshielded twisted-pair (UTP) cables.

Note The transmission speed of the Ethernet ports is auto-sensing by default and is user configurable.

Table 3-4

Specifications and Connection Limits for 100-Mbps

 

Transmission

 

 

 

 

Parameter

 

RJ-45

 

 

Cable specification

Category 51 UTP, 22 to 24 AWG2

Cable length (max)

 

 

Segment length (max)

328 feet (100 m) for 100BASE-TX

 

 

Network length (max)

656 feet (200 m)3 (with 1 repeater)

1.EIA/TIA-568 or EIA-TIA-568 TSB-36 compliant. Not supplied by Cisco.

2.AWG = American Wire Gauge. This gauge is specified by the EIA/TIA-568 standard.

3.This length is specifically between any two stations on a repeated segment.

 

 

Cisco XR 12404 Router Installation Guide

 

 

 

 

 

 

OL-13830-02

 

 

3-22

 

 

 

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Cisco Systems XR 12404 manual Parameter RJ-45, Crossover Cable Pinout for Connecting Two PRPs