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Question 61

After experiencing traffic disruptions from the failure of a single router, a customer asks an engineer to design a solution that will prevent this from occurring in the future. While examining the customer's environment, the engineer discovers that the routers are manufactured by a variety of different vendors, and they have varying amounts of CPU and memory resources. Additionally, several of the customer's applications require the ability to fine-tune the load-balancing parameters between multiple gateway routers.

Which solution should be used to meet these requirements?

    Correct Answer: D

    GLBP (Gateway Load Balancing Protocol) is the appropriate solution because it allows multiple routers to be used simultaneously for load balancing and provides redundancy. It is capable of managing heterogeneous environments with different vendors, CPU, and memory resources because it operates independently of the hardware specifics. Additionally, it allows fine-tuning of load-balancing parameters, which is a requirement for the customer's applications.

Discussion
WasamelaOption: D

GLBP is the answer as it is vendor neutral, provides scalability for heterogeneous environments, and ability to configure load-balancing parameters effectively

nmaccOption: D

Should be GLBP: GLBP: Gateway Load Balancing Protocol (GLBP) allows you to use several default gateways to forward traffic upstream for server subnets, and therefore use all upstream links. However, returning traffic in the direction toward the servers usually travels only across one of these gateways. GLBP manages load distribution between default gateways and is configurable.