Dell PowerEdge FN I/O Module Command Line Reference Guide 9.10(0.0)

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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 has to be less than the seconds value specified with the max-lsp-lifetime command. The range is from 1 to 65535 seconds. The default is 900.

Defaults

900 seconds

Command Modes

ROUTER ISIS

Supported Modes

Full–Switch

Command History

Version	Description
9.9(0.0)	Introduced on the FN IOM.
9.2(0.0)	Introduced on the MXL 10/40GbE Switch IO Module.

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 — sets the maximum interval that LSPs persist without being refreshed.