The Virtual Router Redundancy Protocol (VRRP) is a fault-tolerant protocol that allows logical devices to operate separately from physical devices. VRRP improves device reliability and simplifies host configurations.
The Virtual Router Redundancy Protocol (VRRP) is a fault-tolerant protocol running on routers. VRRP implements egress gateway backup and ensures communication continuity and reliability.
mVRRP is used when multiple VRRP groups coexist. mVRRP helps decrease the number of VRRP Advertisement packets to be sent and minimize network bandwidth consumption.
VRRP association helps a VRRP group rapidly perform a master/backup VRRP switchover if a network link fails. VRRP association ensures user data forwarding.
After enhanced sending and replication of gratuitous ARP packets is enabled for a VRRP group, when a backup device in the VRRP group assumes the master role, it sends a gratuitous ARP packet for each virtual IP address six consecutive times. At the same time, the device replicates each gratuitous ARP packet to be sent to each Eth-Trunk member interface if the VRRP group is configured on an Eth-Trunk interface or Eth-Trunk sub-interface. This ensures that downstream devices can receive the gratuitous ARP packets and update destination MAC addresses and outbound interfaces in time.