Which FHRP is Cisco-proprietary and uses one active router and one standby with a shared virtual IP and virtual MAC?

Which FHRP is Cisco-proprietary and uses one active router and one standby with a shared virtual IP and virtual MAC?

• A. FHRP
• B. HSRP
• C. VRRP
• D. GLBP

Answer: (B)

First-hop redundancy protocols create a stable gateway for hosts so traffic keeps flowing if a router fails. The described setup—one router actively handles traffic for a shared virtual IP while another stays in standby and both use a common virtual MAC—fits Hot Standby Router Protocol. HSRP is Cisco-proprietary, and it provides a single active router and a single standby that share the same virtual IP and virtual MAC so hosts always use the same gateway address. VRRP, by contrast, is an open standard with similar master/backup behavior, and GLBP uses multiple virtual MACs to load-balance across several gateways, not a single shared MAC.

First-hop redundancy protocols create a stable gateway for hosts so traffic keeps flowing if a router fails. The described setup—one router actively handles traffic for a shared virtual IP while another stays in standby and both use a common virtual MAC—fits Hot Standby Router Protocol. HSRP is Cisco-proprietary, and it provides a single active router and a single standby that share the same virtual IP and virtual MAC so hosts always use the same gateway address. VRRP, by contrast, is an open standard with similar master/backup behavior, and GLBP uses multiple virtual MACs to load-balance across several gateways, not a single shared MAC.