Hot Standby Router Protocol (HSRP) is a Cisco-proprietary First Hop Redundancy Protocol (FHRP). HSRP allows two physical gateways that are configured as part of the same HSRP group to share the same virtual gateway address. Network hosts residing on the same subnet as the gateways are configured with the virtual gateway IP address as their default gateway.
While operational, the primary gateway forwards packets destined to the virtual gateway IP address of the HSRP group. In the event that the primary gateway fails, the secondary gateway assumes the role of primary gateway and forwards all packets sent to the . . .
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