Reference Guide

Bidirectional Forwarding Detection (BFD) | 173
Configuring BFD for VRRP
BFD for VRRP is supported on the S5000 platform.
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 stack unit 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. Refer to Enabling 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 8-22. Establishing Sessions with VRRP Neighbors