Virtual Router Redundancy Protocol (VRRP)ΒΆ

VRRP provides a way, for a set of routers, to control a virtual IPv4 address and MAC address, including automatic fail-over mechanism. Such an address may be used by hosts for some service access, e.g. as static default gateway. The gain from using VRRP is a higher availability of the service without requiring automatic reconfiguration of end hosts.

This chapter describes how to configure VRRP protocol. VRRP configuration is split in 3 parts:

  • vrrp global: configure VRRP options common to all VRRP interfaces,
  • vrrp instances: configure VRRP interfaces, i.e. logical interfaces with the VRRP virtual MAC address,
  • vrrp groups: used to group VRRP interfaces that should failover together.