O'Reilly logo

IS-IS Network Design Solutions by Scott Sturgess, Abe Martey

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Using IS-IS in Dual Environments

As specified in RFC 1195, Integrated IS-IS supports routing in dual environments with both ISO CLNS and IP services. Integrated IS-IS can be used to forward both IP and CLNP packets simultaneously in such environments. This section briefly discusses requirements for using IS-IS in such enviroments and potential issues that might arise.

A critical requirement for using IS-IS in a dual environment is to keep all routers in an area consistently configured. In other words, each area must be configured to surpport either IP only or CLNP only, or both, and all routers in the area must be configured similarly. This is necessary so that all routers in the area can build a consistent level Link-State database and obtain ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required