300-420 Question 72
Single answerA company has deployed a network with multiple Layer 3 switches in a campus environment. To ensure high availability and seamless failover for default gateway redundancy, the network engineer is tasked with implementing a First Hop Redundancy Protocol (FHRP). The engineer wants the protocol to allow load sharing of traffic across multiple active gateways. Which FHRP should the engineer choose?
- A
Hot Standby Router Protocol (HSRP)
- B
Virtual Router Redundancy Protocol (VRRP)
- C
Gateway Load Balancing Protocol (GLBP)
- D
Enhanced Interior Gateway Routing Protocol (EIGRP)
Show answer and explanation
Correct answer: C
Explanation
GLBP is the best choice for the given requirements because it is the only First Hop Redundancy Protocol that supports load sharing across multiple active gateways. HSRP and VRRP provide gateway redundancy but do not support traffic load sharing, and EIGRP is unrelated to FHRPs.
- A. Incorrect.
HSRP provides gateway redundancy by electing a single active gateway while other routers remain in standby. It does not support load sharing across multiple active gateways.
- B. Incorrect.
VRRP, like HSRP, provides redundancy by electing a master router. It does not inherently support load sharing across multiple active gateways.
- C. Correct.
GLBP is specifically designed to support gateway redundancy and load sharing by distributing traffic across multiple active gateways, making it the correct choice for this scenario.
- D. Incorrect.
EIGRP is a routing protocol used for exchanging routing information between routers. It is not a First Hop Redundancy Protocol and does not address gateway redundancy or load sharing.