What is the purpose of a First Hop Redundancy Protocol?
- to provide two or more routers working together, sharing an IP and MAC address of a virtual default gateway
- to provide a physical link to a new default router to replace the unreachable default gateway
- to provide a dynamic method by which devices on a LAN can determine the address of a new default gateway
- to provide a list of IP addresses of devices that can assume the role of the forwarding router
Explanation: One way to prevent a single point of failure at the default gateway is to implement a virtual router. FHRP implements this type of router redundancy, where multiple routers are configured to work together to present the illusion of a single router to the hosts on the LAN. By sharing an IP address and a MAC address, two or more routers can act as a single virtual router.
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