VRRP and VRRP for IPv6 Overview
You can configure the Virtual Router Redundancy Protocol (VRRP) and VRRP for IPv6 for the following interfaces:
Ethernet
Fast Ethernet
Tri-Rate Ethernet copper
Gigabit Ethernet
10-Gigabit Ethernet LAN/WAN PIC
Ethernet logical interfaces
VRRP and VRRP for IPv6 allow hosts on a LAN to make use of redundant routers on that LAN without requiring more than the static configuration of a single default route on the hosts. The VRRP routers share the IP address corresponding to the default route configured on the hosts. At any time, one of the VRRP routers is the primary (active) and the others are backups. If the primary fails, one of the backup routers becomes the new primary router, thus always providing a virtual default router and allowing traffic on the LAN to be routed without relying on a single router.
VRRP is defined in RFC 3768, Virtual Router Redundancy Protocol.
For VRRP and VRRP for IPv6 overview information, configuration guidelines, and statement summaries, see the Junos OS High Availability User Guide.