Common configuration tasks

To implement IS-IS in your network, you must enable IS-IS on each participating router.

To assign different level to the routers and organize your network into areas, modify the level capability defaults on end systems from level 1/2 to level 1. Routers communicating to other areas can retain the level 1/2 default.

On each router, at least one area ID also called the area address should be configured as well as at least one IS-IS interface.

  1. Enable IS-IS.

  2. Configure global IS-IS parameters (configure area addresses).

  3. Configure IS-IS interface-specific parameters.

Parent topic: Configuring IS-IS with CLI