Complete Protocol dictionary, glossary and reference

IS-IS: Intermediate System-to-Intermediate System

Intermediate System-to-Intermediate System (IS-IS) is a routing protocol developed by the ISO. It is a link-state protocol where ISs (routers) exchange routing information based on a single metric to determine network topology. It behaves similarly to Open Shortest Path First (OSPF) in the TCP/IP network.

Standard Organization

ISO

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