Changing the maximum LSP lifetime

This task changes the maximum number of seconds an unrefreshed LSP remains in a device‘s LSP database from the default of 1200 seconds (20 minutes) to 2400 seconds (40 minutes).

About this task

Procedure

Enter the configure terminal command to access global configuration mode.
```
device# configure terminal
```
Enter the router isis command to enter IS-IS router configuration mode and enable IS-IS on the device.
```
device(config)# router isis
```
Enter the max-lsp-lifetime command and specify a value to globally configure the maximum LSP lifetime.
```
device(config-isis-router)# max-lsp-lifetime 2400
```

Example

The following example changes the maximum LSP lifetime to 2400 seconds.

device# configure terminal
device(config)# router isis
device(config-isis-router)# max-lsp-lifetime 2400