The examples in this section configure an IS-IS connection between two routers.
In this basic configuration, you set up an adjacency between two routers, set the metric for the link, and set up the IS to be a level 1 or level 2 system.
You must configure the interface, here, so-1/0/0, to be under family iso, and you must configure the ISO address on the loopback interface, lo0. In the protocols configuration, you specify the protocols as isis and include the interfaces you want. Disable fxp0 so that no IS-IS packets are sent over it. Configure the level under the interface. An interface can belong to level 1 or level 2 or in both; here, the interface is in both levels. To configure the metric of the link, ...