DELL N3000 User Manual

Configuring VRRP

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.