Use this document to understand how to use Virtual Router Redundancy Protocol (VRRP) with routers.
VRRP is a layer 3 protocol commonly used to enable multiple network devices to advertise a single, virtual default gateway IP address to downstream clients. Network devices running VRRP determine a primary router and a secondary router, based on priority. The primary router advertises the configured default gateway address. If the primary router fails, the secondary router assumes the primary role and takes over advertising the configured default gateway address.
This document describes the various VRRP configuration elements and provides a configuration and design example for configuring VRRP on a router.