IPv6 (Intermediate System-to-Intermediate System) IS-IS provides all the features of IPv4 IS-IS. The difference between IPv6 IS-IS and IPv4 IS-IS is that IPv6 IS-IS advertises IPv6 routing information.
You can build an IPv6 IS-IS network to allow IS-IS to discover and calculate routes in an autonomous system (AS). IS-IS applies to large and medium networks.
This section provides several configuration examples of IPv6 IS-IS. The configuration examples explain networking requirements, and configuration roadmap.