What Does Hot Standby Router Protocol (HSRP) Mean?
Techopedia Explains Hot Standby Router Protocol (HSRP)
- Consistent IP routing protocol setsWorks in a bridging environmentAutomatically self-updates when media access control (MAC) addresses are modifiedHigh-priority HSRPs are virtual (or active) routers with predefined gateway IP addressesHSRP groups or standby groups are HSRP router sets coordinated as illusory single active routersHSRP group routers have universal IP and MAC addresses.The virtual IP address for an HSRP group is the primary IP address LAN subnet and differs from other allocated interface addresses.
HSRP and active routers transmit messages on a periodic basis upon completion of protocol election. When an HSRP router fails or becomes an active router, the next standby router is selected to handle packet-forwarding duties. The active router then accepts and forwards traffic to the group’s virtual MAC address. When the active router leaves the LAN state, packet forwarding ends.
