CLI Guide

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.

adjacency-check

Verify that the “protocols supported” field 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-specific. For command information about other platforms,

see the relevant Dell Networking OS Command Line Reference Guide.

Version Description

9.8(2.0) Introduced on the S3100 series.

9.8(0.0P5) Introduced on the S4048-ON.

9.8(0.0P2) Introduced on the S3048-ON.

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Intermediate System to Intermediate System (IS-IS)