timer lsp-refresh

Use timer lsp-refresh to set the LSP refresh interval.

Use undo timer lsp-refresh to restore the default.

Syntax

timer lsp-refresh seconds

undo timer lsp-refresh

Default

The default LSP refresh interval is 900 seconds.

Views

IS-IS view

Predefined user roles

network-admin

Parameters

seconds: Specifies the LSP refresh interval in the range of 1 to 65534 seconds.

Usage guidelines

Each router refreshes its LSPs at a configurable interval and sends them to other routers to achieve the following purposes:

• Prevent valid routes from aging out.

• Synchronize LSPs in the network.

A smaller refresh interval speeds up network convergence but consumes more bandwidth.

To refresh LSPs before they are aged out, the interval configured by the timer lsp-refresh command must be smaller than that configured by the timer lsp-max-age command.

Examples

# Set the LSP refresh interval to 1500 seconds.

<Sysname> system-view
[Sysname] isis 1
[Sysname-isis-1] timer lsp-refresh 1500

Related commands

timer lsp-max-age