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Dell Command Line Reference Guide for the S4048–ON System 9.14.2.8

lsp-refresh-interval

Set the link state PDU (LSP) refresh interval. LSPs must be refreshed before they expire. When the LSPs are not refreshed after a refresh interval, they are kept in a database until their max-lsp-lifetime reaches zero and then LSPs is purged.

Syntax
lsp-refresh-interval seconds

To restore the default refresh interval, use the no lsp-refresh-interval command.

Parameters
seconds
The LSP refresh interval, in seconds. This value must be 300 seconds less than the value specified in the max-lsp-lifetime command. The range is from 1 to 65535 seconds. The default is 900.
Defaults
900 seconds
Command Modes
ROUTER ISIS
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.
7.5.1.0
Added support for LSP Throttling Enhancement.
Usage Information

The refresh interval determines the rate at which route topology information is transmitted preventing the information from becoming obsolete.

The refresh interval must be less than the LSP lifetime specified with the max-lsp-lifetime command. A low value reduces the amount of time that undetected link state database corruption can persist at the cost of increased link utilization. A higher value reduces the link utilization the flooding of refreshed packets causes.

Related Commands
  • max-lsp-lifetime — set the maximum interval that LSPs persist without being refreshed.

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