Configuring an RSVP GR Helper

An RSVP GR Helper is configured to allow devices along an RSVP-TE tunnel to retain RSVP sessions during a master/backup switchover.

Usage Scenario

The NetEngine 8000 F can only function as a GR Helper to help a neighbor node to complete RSVP GR. The RSVP GR Helper needs to be configured only after GR is enabled on the neighbor node that supports the RSVP GR Restarter. If a local device is only connected to NetEngine 8000 Fs running the same version with the local device, there is no need to configure the RSVP GR Helper on the local device.

Pre-configuration Tasks

Before configuring an RSVP GR Helper, configure an RSVP-TE tunnel.

Enabling the RSVP Hello Extension: The RSVP Hello extension is configured on a GR node and its neighbor to rapidly monitor reachability between these RSVP nodes.

Enabling the RSVP GR Support Capability: The RSVP GR support capability helps a node support its neighbors' GR capabilities.

(Optional) Configuring a Hello Session Between RSVP GR Nodes: If TE FRR is deployed, a Hello session must be established between a PLR and an MP. A Hello session must be manually established if it cannot be automatically established between RSVP neighboring nodes.

Verifying the RSVP GR Helper Configuration: After configuring RSVP GR, you can verify that the TE tunnel properly forwards data during the GR process.