Service Manual

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,
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.
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 — sets the maximum interval that LSPs persist without being
refreshed.
1046
Intermediate System to Intermediate System (IS-IS)