CLI Guide

Intermediate System to Intermediate System (IS-
IS)
The Dell Networking OS supports the intermediate system to intermediate system (IS-IS) protocol for IPv4 and IPv6.
IS-IS is an interior gateway protocol that uses a shortest-path-rst algorithm. IS-IS facilitates the communication between open systems,
supporting routers passing both IP and OSI trac.
A router is considered 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 Conguration Guide.
NOTE: The fundamental mechanisms of IS-IS are the same between IPv4 and IPv6. Where there are dierences between the
two versions, they are identied and claried in this chapter. Except where identied, the information in this chapter applies to
both protocol versions.
Topics:
• adjacency-check
• advertise
• area-password
• clear cong
• clear isis
• clns host
• debug isis
• debug isis adj-packets
• debug isis local-updates
• debug isis snp-packets
• debug isis spf-triggers
• debug isis update-packets
• default-information originate
• description
• distance
• distribute-list in
• distribute-list out
• distribute-list redistributed-override
• domain-password
• graceful-restart ietf
• graceful-restart interval
• graceful-restart t1
• graceful-restart t2
• graceful-restart t3
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