Dell M6220 User Configuration Manual page 1060

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With standard VRRP , the backup router takes over only if the router goes

down. With VRRP interface tracking, if a tracked interface goes down on the

VRRP master, the priority decrement value is subtracted from the router

priority. If the master router priority becomes less than the priority on the

backup router, the backup router takes over. If the tracked interface becomes

up, the value of the priority decrement is added to the current router priority.

If the resulting priority is more than the backup router priority, the original

VRRP master resumes control.

VRRP route tracking monitors the reachability of an IP route. A tracked route

is considered up when a routing table entry exists for the route and the route

is accessible. When the tracked route is removed from the routing table, the

priority of the VRRP router will be reduced by the priority decrement value.

When the tracked route is added to the routing table, the priority will be

incremented by the same.

Configuring VRRP

M8024 M6348 M8024-k