IS-IS must be enabled in order for the protocol to be active.
Careful planning is essential to implement commands that can affect the behavior of global and interface levels.
The following shows the command usage to configure IS-IS on a router.
isisconfig>router# isisIS-IS also supports the concept of multi-instance IS-IS which allows separate instances of the IS-IS protocol to run independently of the 7210 SAS router. Separate instances are created by adding a different instance ID as the optional parameter to the config>router>isis command.