In an HSRP setup, multiple routers or layer 3 switches work together to present a virtual IP address and MAC address as a single default gateway to the connected devices. One router assumes the active role and forwards traffic, while the others remain in standby. One way to achieve near-100 percent network uptime is to use HSRP, which provides network redundancy for IP networks, and ensures that user traffic immediately and transparently recovers from first hop failures in network edge devices or access circuits. ✅ Routers: At least two HSRP-supported routers (must be Cisco routers). RFC 2281 describes this protocol in more detail. Basically, each of the routers that provides redundancy for a given gateway address is assigned to a common. The Hot Standby Router Protocol (HSRP) is a Cisco proprietary protocol designed to provide high availability and fault tolerance for IP networks.
