Configuring BFD for OSPFv3
Bidirectional forwarding detection (BFD) provides a mechanism to quickly detect the connectivity of links between OSPFv3 neighbors, improving the convergence speed of OSPFv3. For more information about BFD, see High Availability Configuration Guide.
After discovering neighbors by sending hello packets, OSPFv3 notifies BFD of the neighbor addresses, and BFD uses these addresses to establish sessions. Before a BFD session is established, it is in the down state. In this state, BFD control packets are sent at an interval of no less than 1 second to reduce BFD control packet traffic. After the BFD session is established, BFD control packets are sent at the negotiated interval, thereby implementing fast fault detection.
To configure BFD for OSPFv3, you need to configure OSPFv3 first.
To configure BFD for OSPFv3:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter OSPFv3 view. | ospfv3 [ process-id | vpn-instance vpn-instance-name ] * | N/A |
3. Specify a router ID. | router-id router-id | N/A |
4. Quit the OSPFv3 view. | quit | N/A |
5. Enter interface view. | interface interface-type interface-number | N/A |
6. Enable an OSPFv3 process on the interface. | ospfv3 process-id area area-id [ instance instance-id ] | N/A |
7. Enable BFD on the interface. | ospfv3 bfd enable [ instance instance-id ] | By default, BFD is disabled on the OSPFv3 interface. |