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Explanation of VRRP Roles and Their Functions:
InVRRP (Virtual Router Redundancy Protocol), devices are assigned roles as eitherMasterorBackupafter an election process. Each role has specific responsibilities to ensure the availability of the virtual IP address.
Matching Roles and Mechanisms:
Master:
Periodically send VRRP Advertisement packets.
The Master device sends advertisement packets to inform Backup devices that it is active.
Respond to an ARP request destined for a virtual IP address with an ARP reply carrying the virtual MAC address.
The Master device is responsible for responding to ARP requests for the virtual IP and forwarding traffic for it.
Backup:
Transition from Master to Backup immediately if a VRRP Advertisement packet with a higher priority is received.
A Backup device becomes Master only if the current Master stops sending advertisement packets or has a lower priority.
Discard IP packets destined for the virtual IP address.
Backup devices do not process traffic for the virtual IP address unless they become the Master.
