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In IPv6 networks, hosts learn about routers by receiving Router Advertisements used by the Neighbor Discovery (ND) protocol. ND already has a built-in mechanism to determine unreachable routers. However, it can take up to 38 seconds to detect an unreachable router. It is possible to change parameters and make detection faster, but it will increase the overhead of ND traffic especially if there are a lot of hosts. VRRP allows detecting the detection of unreachable routers within 3 seconds without additional traffic overhead.
Virtual Router Redundancy Protocol (VRRP) provides a solution by combining a number of routers into a logical group called Virtual Router (VR). VRRP implementation in RouterOS is based on VRRPv2 RFC 3768 and VRRPv3 RFC 5798.
It is recommended to use the same version of RouterOS for all devices with the same VRID used to implement VRRP.
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According to RFC authentication is deprecated for VRRP v3 |
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