VRRP (Virtual Router Redundancy Protocol)

 
VRRP differs from HSRP in the following ways:

• VRRP is an IEEE standard (RFC 2338) for router redundancy; HSRP is a Cisco-proprietary protocol.
• The virtual router represents a group of routers, known as a VRRP group or virtual router group.
• The active router is referred to as the master virtual router.
• The master virtual router may have the same IP address as the virtual router group.
• Multiple routers can function as backup routers.
• VRRP is supported on Ethernet, Fast Ethernet, and Gigabit Ethernet interfaces, and with Multiprotocol Label Switching (MPLS), virtual private networks (VPNs), and VLANs.