Reference Guide

148 | Bidirectional Forwarding Detection (BFD)
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Configuring BFD for VRRP
BFD for VRRP is only supported on platforms: e c
When using BFD with VRRP, the VRRP protocol registers with the BFD manager on the RPM. 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. See 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.
Related configuration tasks
• Change session parameters.
• Disable or re-enable BFD on an interface.
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 7-22. Establishing Sessions with VRRP Neighbors
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FTOS(config-if-range-gi-4/25)# ip address 2.2.5.1/24
FTOS(config-if-range-gi-4/25)# no shutdown
FTOS(config-if-range-gi-4/25)# vrrp-group 1
FTOS(config-if-range-gi-4/25)# virtual-address 2.2.5.4
FTOS(config-if-range-gi-4/25)# vrrp bfd all-neighbors
FTOS(config-if-range-gi-4/25)# vrrp bfd neighbor 2.2.5.2
FTOS(conf-if-gi-2/3)#ip address 2.2.5.2/24
FTOS(config-if-gi-2/3)# no shutdown
FTOS(config-if-range-gi-4/25)# vrrp-group 1
FTOS(config-if-range-gi-4/25)# virtual-address 2.2.5.4
FTOS(config-if-range-gi-4/25)# vrrp bfd all-neighbors
FTOS(config-if-range-gi-4/25)# vrrp bfd neighbor 2.2.5.1
IP Address: 2.2.5.3
Gateway: 2.2.5.1
R2: MASTER
R1: BACKUP
IP Address: 2.2.5.4
VIRTUAL
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