Administrator Guide

Version Description
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.2.1.0 Introduced on the E-Series ExaScale.
7.6.1.0 Introduced on the C-Series.
7.5.1.0 Introduced on the E-Series.
Usage
Information
When BFD is enabled with VRRP neighbors, the VRRP protocol registers with the BFD manager on the
route processor. 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.
Bidirectional Forwarding Detection (BFD) 323