Configure Graceful Restart

Graceful restart allows a router whose VPN control plane is undergoing a restart to continue to forward traffic while recovering its state from neighboring routers. Without graceful restart, a control plane restart disrupts any VPN services provided by the router. Graceful restart is supported on Layer 2 VPNs, Layer 3 VPNs, and virtual-router routing instances. It is not available for VPLS.

To enable VPN graceful restart, you need to configure it globally and on the routing instance. Configure the graceful-restart statement globally:

graceful-restart {

    disable;

    path-selection-defer-time-limit time-limit;

}

You can configure this statement at the following hierarchy levels:

• [edit routing-options]
• [edit logical-routers logical-router-name routing-options]

Include the graceful-restart statement in the routing instance configuration:

graceful-restart {

    disable;

    path-selection-defer-time-limit time-limit;

}

You can configure this statement at the following hierarchy levels:

• [edit routing-instances routing-instance-name routing-options]
• [edit logical-routers logical-router-name routing-instances routing-instance-name routing-options]