Service Manual

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Intermediate System to Intermediate System (IS-
IS)
The intermediate system to intermediate system (IS-IS) protocol for IPv4 and IPv6 is supported on the S3048–ON platform.
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.
adjacency-check
Verify that the “protocols supported” eld of the IS-IS neighbor contains matching values to this router.
Syntax
adjacency-check
To disable adjacency check, use the no adjacency-check command.
Defaults Enabled.
Command Modes
• ROUTER ISIS (for IPv4)
• CONFIGURATION-ROUTER-ISIS-ADDRESS-FAMILY-IPV6 (for IPv6)
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.8(0.0) Introduced on the S3048-ON and S4048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
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Intermediate System to Intermediate System (IS-IS)