VRRP
HSRP
GLBP
Terms
- GLBP - Gateway Load Balancing Protocol.
- AVG - Active Virtual Gateway. The AVG response to ARP requests, with the same IP, but different MAC addresses to load balance for GLBP.
- AVF - Active Virtual Forwarder. A router in a GLBP group that is forwarding packets. All AVFs have their own mac, and are responsible for forwarding traffic destined towards that MAC.
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Cisco proprietary
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224.0.0.102
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UDP 3222
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AVG is highest priority
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Max of 4 active AVFs
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Two states: Active, Listen
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MD5 is supported