If a VRRP master router fails, which router is selected as the new master router?
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A. B. C. D.B.
In a Virtual Router Redundancy Protocol (VRRP) configuration, a group of routers work together to provide a redundant gateway for hosts in a LAN. VRRP elects one of the routers as the master, which is responsible for forwarding packets sent to the virtual IP address associated with the VRRP group. The other routers in the group act as backups, ready to take over the forwarding duties if the master fails.
When the master router fails, VRRP follows a set of rules to elect a new master router. Specifically, the router with the highest priority value becomes the new master. The priority is a configurable value assigned to each VRRP router, which can range from 1 to 254. The router with the highest priority value is the most preferred candidate to become the master.
If there is a tie in priority value, then the router with the highest IP address (i.e., highest loopback address) will become the master. This tie-breaking mechanism ensures that the master election process is deterministic and predictable, as it avoids the randomness that could arise from the use of other factors such as CPU load or link bandwidth.
Therefore, the correct answer to the question is B: the router with the highest priority value is selected as the new master router in case of a VRRP master router failure.