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integrated IS-IS

The Integrated IS-IS is a routing protocol used to integrate IS-IS (Intermediate System to Intermediate System) and TCP/ IP via Open Shortest Path First( OSPF).

The Integrated IS-IS protocol was specified by Digital Equipment in 1990 under RFC 1195. In order to perform IP communications, some information was added to the IS-IS frame. However, the integration achieved comes at the expense of option capabilities in OSPF. OSPF increases the performance and functionality of TCP/IP networks quite considerably compared to Routing Information Protocol( RIP), but it still does not provide OSI compatibility and functionality.

The goal of Integrated IS-IS is clearly to migrate TCP/IP to Open Systems Interconnection (OSI).

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