Virtual Router Redundancy Protocol (VRRP)

SUMMARY Read this topic to learn about the support for the Virtual Router Redundancy Protocol (VRRP) in Juniper Cloud-Native router.

The Virtual Router Redundancy Protocol (VRRP) enables hosts on a LAN to make use of redundant routing platforms on that LAN without requiring more than the static configuration of a single default route on the hosts. The VRRP routing platforms share the IP address corresponding to the default route configured on the hosts. At any time, one of the VRRP routing platforms is the primary (active) and the others are backups. If the primary routing platform fails, one of the backup routing platforms becomes the new primary routing platform, providing a virtual default routing platform and enabling traffic on the LAN to be routed without relying on a single routing platform. Using VRRP, a backup device can take over a failed default device within a few seconds. This is done with minimum VRRP traffic and without any interaction with the hosts. When JCNR is deployed in the containerized network function (CNF) mode in cloud deployments, the VRRP unicast can be used to decide between the active and backup JCNR nodes. Review the Understanding VRRP topic for more information.