Administrator Guide

Configure BFD for VRRP
When using BFD with VRRP, the VRRP protocol registers with the BFD manager. BFD sessions are established with all
neighboring interfaces participating in VRRP. If a neighboring interface fails, the BFD agent on the line card notifies the BFD
manager, which in turn notifies the VRRP protocol that a link state change occurred.
Configuring BFD for VRRP is a three-step process:
1. Enable BFD globally.
2. Establish VRRP BFD sessions with all VRRP-participating neighbors.
3. On the master router, establish a VRRP BFD sessions with the backup routers. Refer to Establishing Sessions with All VRRP
Neighbors.
Related Configuration Tasks
● Changing VRRP Session Parameters.
● Establishing Sessions with OSPF Neighbors.
Establishing Sessions with All VRRP Neighbors
BFD sessions can be established for all VRRP neighbors at once, or a session can be established with a particular neighbor.
Figure 17. Establishing Sessions with All VRRP Neighbors
To establish sessions with all VRRP neighbors, use the following command.
● Establish sessions with all VRRP neighbors.
INTERFACE mode
vrrp bfd all-neighbors
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Bidirectional Forwarding Detection (BFD)