Configure the Revert Timer

For LSPs configured with both primary and secondary paths, it is possible to configure the revert timer. If a primary path goes down and traffic is switched to the secondary path, the revert timer specifies the amount of time (in seconds) that the LSP must wait before it can revert traffic back to a primary path. If during this time, the primary path experiences any connectivity problems or stability problems, the timer is restarted.

The range of values you can configure for the revert timer is 0 through 65,535 seconds. The default value is 60 seconds.

If you configure a value of 0 seconds, the traffic on the LSP, once switched from the primary path to the secondary path, remains on the secondary path permanently (until the network operator intervenes or until the secondary path goes down).

You can configure the revert timer for all LSPs on the router at the [edit protocols mpls] hierarchy level or for a specific LSP at the [edit protocols mpls label-switched-path lsp-path-name] hierarchy level.

To configure the revert timer, include the revert-timer statement:

revert-timer seconds;

For a list of hierarchy levels at which you can configure this statement, see the summary section for this statement.