Virtual Router Redundancy Protocol Commands 1247ExampleThe following configures VLAN 15 virtual router to learn the advertisementinterval used by the master virtual router.console(config-if-vlan15)#vrrp 5 timers learnvrrp track interfaceUse the vrrp track interface command in Interface Configuration mode toalter the priority of the VRRP router based on the availability of its interfaces.It is useful for tracking interfaces that are not configured for VRRP. Onlyrouting interfaces may be tracked. A tracked interface is up if routing on thatinterface is up. Otherwise, the tracked interface is down.When the tracked interface is down, or the interface has been removed fromthe router, the priority of the VRRP router will be decremented by the valuespecified in the priority argument. When the interface is up for the IPprotocol, the priority will be incremented by the priority value.A VRRP configured interface can track more than one interface. When atracked interface goes down, then the priority of the router will be decreasedby 10 (default priority decrement) for each downed interface. The defaultpriority decrement is changed using the priority argument. The defaultpriority of the virtual router is 100, and the default decrement priority is 10.By default, no interfaces are tracked. If you specify, just the interface to betracked without giving the priority, which is optional, then the default prioritywill be set.Use the no form of this command to remove the interface from the trackedlist or to restore the priority decrement to its default. When removing aninterface from the tracked list, the priority is incremented by the decrementvalue if that interface is down.Syntaxvrrpgroup track interface vlanvlan-id [decrement priority]no vrrpgroup track interface vlanvlan-id
