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Dell Command Line Reference Guide for the S4048–ON System 9.14.2.4

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isis hello-interval

Specify the length of time between hello packets sent.

Syntax
isis hello-interval seconds [level-1 | level-2]

To return to the default values, use the no isis hello-interval [seconds] [level-1 | level-2] command.

Parameters
seconds
Allows you to set the length of time between hello packet transmissions. The range is from 1 to 65535. The default is 10.
level-1
(OPTIONAL) Select this value to configure the hello interval for Level 1. This value is the default.
level-2
(OPTIONAL) Select this value to configure the hello interval for Level 2.
Defaults
seconds = 10; level-1 (if not otherwise specified)
Command Modes
INTERFACE
Command History

This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC Networking OS Command Line Reference Guide.

Version
Description
9.10(0.1)
Introduced on the S6010-ON and S4048T-ON.
9.10(0.0)
Introduced on the S3148.
9.10(0.0)
Introduced on the S6100–ON.
9.8(2.0)
Introduced on the S3100 series.
9.8(1.0)
Introduced on the Z9100–ON.
9.8(0.0P5)
Introduced on the S4048-ON.
9.8(0.0P2)
Introduced on the S3048-ON.
9.7(0.0)
Introduced on the S6000-ON.
9.5(0.1)
Introduced on the Z9500.
9.0.2.0
Introduced on the S6000.
8.3.19.0
Introduced on the S4820T.
8.3.12.0
Introduced on the S4810.
8.3.11.1
Introduced on the Z9000.
Usage Information

Hello packets are held for a length of three times the value of the hello interval. To conserve bandwidth and CPU usage, use a high hello interval seconds. Use a low hello interval seconds for faster convergence (but uses more bandwidth and CPU resources).

Related Commands
  • isis hello-multiplier — specify the number of IS-IS hello packets a neighbor must miss before the router declares the adjacency as down.

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