Create an object that tracks the line-protocol state of an L2 interface and monitors its operational status. It is possible to configure up to 500 objects. Each object is assigned a unique ID.
When the link-level status goes down, the tracked resource status also goes down. If the link-level status is up, the tracked resource status is also considered up. For logical interfaces such as port channels or VLANs, the link-protocol status is considered up if any physical interfaces under the logical interface are up.
Object tracking
As a client, VRRP can track up to 20 interface objects and 12 tracked interfaces supported for each VRRP group. A unique priority-cost value can be assigned from 1 to 254 to each tracked VRRP object or group interface.
If a tracked VRRP object is in a down state, the priority cost is subtracted from the VRRP group priority. If a VRRP group router acts as owner-master, the run-time VRRP group priority remains fixed at 255. Changes in the state of a tracked object have no effect.
In VRRP object tracking, the sum of the priority costs for all tracked objects and interfaces cannot equal or exceed the priority of the VRRP group.
