Intermediate System to Intermediate System (IS-
IS)
IS-IS is an interior gateway protocol that uses shortest-path-first algorithm. IS-IS facilitates the communication between open systems,
supporting routers passing through both IP and OSI traffic.
A router is considered as an intermediate system. Networks are partitioned into manageable routing domains called areas. Intermediate
systems send, receive, and forward packets to other routers within their area (Level 1 and Level 1-2 devices). Only Level 1-2 and Level 2
devices communicate with other areas.
IS-IS protocol standards are listed in the Standard Compliance chapter in the
Dell Networking OS Configuration Guide
.
NOTE:
The fundamental mechanisms of IS-IS are the same for IPv4 and IPv6. However some command modes might vary when
applied to IPV4 and IPV6. These variations have been explicitly explained for such commands. If the variation is not mentioned,
then the information applies to both the protocol versions.
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Intermediate System to Intermediate System (IS-IS)
