Which Cisco FHRP distributes traffic across multiple routers while providing redundancy?

Which Cisco FHRP distributes traffic across multiple routers while providing redundancy?

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

Answer: (D)

Gateway Load Balancing Protocol is designed to provide both redundancy and the ability to share traffic load among several routers. It does this by using a single virtual gateway IP but multiple virtual MAC addresses, one for each router in the group. The Active Virtual Gateway picks a router to act as the gateway for clients, and others become Active Virtual Forwarders. When devices on the LAN look up the gateway, ARP responses can point to different virtual MACs, so different flows are forwarded by different routers rather than always going through a single device. This creates load distribution across the several routers while still maintaining a backup path if one fails. Other FHRP options primarily designate one active router with backups, focusing on redundancy rather than distributing traffic, which is why this protocol is the best fit for both goals.

Gateway Load Balancing Protocol is designed to provide both redundancy and the ability to share traffic load among several routers. It does this by using a single virtual gateway IP but multiple virtual MAC addresses, one for each router in the group. The Active Virtual Gateway picks a router to act as the gateway for clients, and others become Active Virtual Forwarders. When devices on the LAN look up the gateway, ARP responses can point to different virtual MACs, so different flows are forwarded by different routers rather than always going through a single device. This creates load distribution across the several routers while still maintaining a backup path if one fails. Other FHRP options primarily designate one active router with backups, focusing on redundancy rather than distributing traffic, which is why this protocol is the best fit for both goals.