Datasheet

OL-17436-01

Configuring Interfaces on the PRP

Configuring the Ethernet Interfaces

The IEEE 802.3 Ethernet interfaces, located on the PRP, allow connections to external Ethernet networks

and are capable of data transmission rates of 10 Mbps and 100 Mbps. The transmission speed of the

Ethernet ports is auto-sensing by default and is user configurable.

Caution An Ethernet port is used primarily as a Telnet port into the Cisco XR 12000 Series Router or for booting

or accessing Cisco IOS software images over a network to which an Ethernet port is directly connected.

Cisco Express Forwarding (CEF) functions are switched off by default for security reasons. Cisco

strongly cautions you to consider the security implications of switching on CEF routing functions on

these ports.

The following sections provide two methods for configuring the Ethernet interface:

• Using Configuration Mode to Configure an Ethernet Interface

• Using the Setup Command Facility to Configure an Ethernet Interface

Using Configuration Mode to Configure an Ethernet Interface

To perform a basic configuration of an Ethernet interface in configuration mode, follow these steps:

Step 1 At the privileged-level prompt, enter configuration mode and specify that the console terminal is the

source of the configuration subcommands as follows:

Router# configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#

Step 2 At the configuration mode prompt, specify the Ethernet interface by entering the sub command

interface, followed by the type (ethernet) and port (0) as follows:

Router(config)# interface ethernet 0

Router(config-if)#

Step 3 If IP routing is enabled on the system, you can assign an IP address and subnet mask to the interface with

the ip address configuration sub command, as in the following example:

Router(config-int)# ip address 1.1.1.10 255.255.255.0

Step 4 Add any additional configuration subcommands required to enable or disable routing protocols (such as

the no ip mroute-cache command) and to set other interface characteristics.

Step 5 Change the shutdown state to Up and enable the Ethernet interface as follows:

Router(config-int)# no shutdown

Step 6 After you include all the configuration subcommands necessary to complete the configuration, press

Ctrl-Z to exit configuration mode.

Step 7 Write the new configuration to nonvolatile memory as follows:

Router# write memory

[OK]

Router#