Configuring the Router ID

The router ID uniquely identifies a device in an AS.

Usage Scenario

A router ID is a 32-bit IP address that uniquely identifies a router in an Autonomous System (AS). A router ID can be generated as follows:

Manually configured
Configured by the protocol
Automatically selected

If the IP address of a physical interface is configured as the router ID and then the IP address changes, route flapping may occur. Therefore, configuring the IP address of a loopback interface as the router ID is recommended.

Pre-configuration Tasks

None

Procedure

Run system-view
The system view is displayed.
Run router id router-id
The Router ID is specified.
Run commit
The configuration is committed.

Checking the Configurations

After configuring a router ID, check it.

Run the display router id command to check the router ID.