Hsrp

The router that monitors the Active router. If it stops receiving Hello messages within a set timeframe, it assumes the Active role.

HSRP operates by grouping physical routers into a single . This group is assigned a unique Virtual IP (VIP) and Virtual MAC Address .

In computer networking, is a Cisco proprietary redundancy protocol designed to provide a highly available default gateway for hosts on a local area network (LAN). By allowing multiple routers to present themselves as a single "virtual" router, HSRP ensures that if a primary gateway fails, a standby unit takes over transparently, preventing a single point of network failure. Core Concepts of HSRP The router that monitors the Active router

The router is currently forwarding traffic for the virtual IP.

The router knows the virtual IP but is neither Active nor Standby. This group is assigned a unique Virtual IP

The router sends periodic Hello messages and actively participates in the election.

When HSRP is enabled, a router transitions through several states to determine its role: The beginning state; HSRP is not yet running. Core Concepts of HSRP The router is currently

The router has not yet determined the virtual IP and is waiting to hear from the Active router.

Not a physical device, but the combination of the VIP and MAC address that end-user devices (hosts) use as their default gateway. How HSRP Works: States and Election

Understand the Hot Standby Router Protocol Features ... - Cisco