HSRP vs VRRP vs GLBP: Choosing the Right FHRP
HSRP, VRRP, and GLBP all solve first-hop redundancy with different trade-offs. The side-by-side comparison, when each wins, failover times, and migration paths.
GLBP
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GLBP for Active/Active Load Balancing
GLBP (Gateway Load Balancing Protocol) is Cisco's load-balancing FHRP. AVG, AVFs, three load balancing methods, configuration, and when GLBP is actually the right answer.