Enabling IS-IS

IS-IS must be enabled in order for the protocol to be active.

Caution: Careful planning is essential to implement commands that can affect the behavior of global and interface levels.

To configure IS-IS on a router, enter the following command.

CLI syntax

isis

Example

config>router# isis

IS-IS also supports the concept of multi-instance IS-IS which allows separate instances of the IS-IS protocol to run independently of the SR OS router.

Separate instances are created by adding a different instance ID as the optional parameter to the config>router>isis command.