IS-IS must be enabled on each participating routers.
There are no default network entity titles.
There are no default interfaces.
By default, routers are assigned a Level 1/Level 2 level capability.
In network mode, the 7210 SAS-K 2F6C4T and 7210 SAS-K 3SFP+ 8C allow the configuration of a single instance at any specific time. The instance ID can be any number other than 0. This enables the 7210 SAS-K 2F6C4T and 7210 SAS-K 3SFP+ 8C devices to be used in a network where multi-instance IS-IS is deployed and the node needs to use an instance ID other than the default instance ID of 0.