Example: Managing Helper Modes for OSPF Graceful Restart

Step-by-Step Procedure

Both standard and restart signaling-based helper modes are enabled by default, irrespective of the graceful-restart configuration status on the routing device. Junos OS allows you to disable or enable the helper modes based on your requirements.

To configure the helper mode options for graceful restart:

1. To enable graceful restart, add the graceful-restart statement at the [edit routing-options] hierarchy level.

   The helper modes, both standard and restart signaling-based, are enabled by default.

2. To disable one or both of the helper modes, add the helper-disable <both | restart-signaling | standard> statement at the [edit protocols ospf graceful-restart] hierarchy level.

   • To disable both standard and restart signaling-based helper modes:

   • To disable only the restart signaling-based helper mode:

   • To disable only the standard helper mode:

   Note:

   You must commit the configuration before the change takes effect.

   The last committed statement always takes precedence over the previous one.

3. To enable one or both of the helper modes when the helper modes are disabled, delete the helper-disable <both | restart-signaling | standard> statement from the [edit protocols ospf graceful-restart] hierarchy level.

   • To enable both standard and restart signaling-based helper modes:

   • To enable the restart signaling-based helper mode:

   • To enable the standard helper mode:

   Note:

   You must commit the configuration before the change takes effect.

   The last committed statement always takes precedence over the previous one.