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Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
OL-11497-03
Chapter 3 Installing the Router
Connecting to the Console and Auxiliary Ports
Warning
The ports labeled Ethernet, 10BASE-T, Token Ring, Console, and AUX are safety
extra-low voltage (SELV) circuits. SELV circuits should only be connected to
other SELV circuits. Because the basic rate interface (BRI) circuits are treated
like telephone network voltage, avoid connecting the SELV circuit to the
telephone network voltage (TNV) circuits.
Connecting the PRP to an Ethernet Network
This section provides information for connecting the PRP on your router to an
Ethernet network.
The PRP includes two 10/100 Mbps Ethernet ports, each using an 8-pin RJ-45
receptacle for either IEEE 802.3 10BASE-T (10 Mbps) or IEEE 802.3u
100BASE-TX (100 Mbps) connections. The transmission speed of the Ethernet
ports is auto-sensing by default and is user configurable.
The Ethernet interfaces on the PRP are end-station devices, not repeaters;
therefore, you
must
connect an Ethernet interface to a repeater or hub. To connect
cables to the PRP Ethernet interfaces (ports labeled ETH0 and ETH1), attach the
Category 5 UTP cable directly to a RJ-45 receptacle on the PRP.
RJ-45 cables are not available from Cisco Systems, but are available from outside
commercial cable vendors.
4
Termination Network
5
Termination Network
6
RX–
7
Termination Network
8
Termination Network
Table 3-6
Ethernet RJ-45 Receptacle Pin Configuration (continued)
Pin
Signal
