Two HP Provision switches are configured as virtual routers. How does the VRRP backup know if
the VRRP master is available and functioning?
A.
The VRRP master and backup exchange hello packets over a VLAN dedicated to VRRP.
B.
The VRRP backup sends VRRP requests, and the master replies by sending a VRRP ACK
message.
C.
The VRRP master and backup both implement bi-directional forwarding detection (BFD).
D.
The VRRP backup listens for the master’s VRRP advertisements.
Explanation:
A failure to receive a multicast packet from the master router for a period longer
than three times the advertisement timer causes the backup routers to assume that the master
router is dead. The virtual router then transitions into an unsteady state and an election process is
initiated to select the next master router from the backup routers. This is fulfilled through the use of
multicast packets.