Configuring BFD for OSPFv3

To speed up OSPFv3 convergence when the link status changes, you can configure BFD for OSPFv3. After detecting a link failure, BFD notifies the routing protocol of the failure, which triggers fast convergence. When the neighbor relationship is Down, the BFD session is deleted dynamically.

Usage Scenario

To speed up OSPFv3 convergence when the link status changes, you can configure BFD for OSPFv3 links.

BFD detects links much faster than keep-alive protocols do. If OSPFv3 is bound to BFD sessions, BFD can notify OSPFv3 of link failures immediately, and then OSPFv3 perform route calculation and convergence in the new network topology.

Pre-configuration Tasks

Before configuring BFD for OSPFv3, complete the following tasks:

Configure a link layer protocol.
Configure IPv6 addresses for interfaces to ensure that neighboring nodes are reachable at the network layer.
Configure basic OSPFv3 functions.

Configuring BFD Globally: On the two devices that need to establish a BFD session, you can configure BFD for all the interfaces in a certain OSPFv3 process.

Configuring OSPFv3 BFD Parameters: After enabling BFD for OSPFv3, you need to configure BFD parameters in the OSPFv3 process.

(Optional) Preventing an Interface from Dynamically Setting Up a BFD Session: To disable BFD on some interfaces, you need to prevent these interfaces from dynamically establishing BFD sessions.

(Optional) Configuring BFD for a Specified Interface: To configure BFD only on a specified interface, or enable an interface to detect link failures faster after BFD for OSPFv3 is enabled globally, configure BFD on the specified interface.

Verifying the Configuration of BFD for OPSFv3: After configuring BFD for OSPFv3, verify information about the BFD session.