2V0-41.24 Question 134
Single answerA network administrator has deployed VMware NSX to improve network performance and scalability. The administrator observes that multiple uplinks are available between the NSX Tier-0 Gateway and the physical infrastructure. They want to ensure that traffic is distributed efficiently across all available paths to optimize bandwidth utilization and provide redundancy. Which statement best explains how ECMP routing can help achieve this goal?
- A
ECMP routing allows a single path to be used for all traffic, ensuring maximum throughput on that path.
- B
ECMP routing enables traffic to be distributed across multiple equal-cost paths, improving bandwidth usage and redundancy.
- C
ECMP routing ensures that only the shortest path is used for routing traffic, minimizing latency.
- D
ECMP routing dynamically adjusts the cost of routes to prioritize certain paths over others.
Show answer and explanation
Correct answer: B
Explanation
Equal-Cost Multi-Path (ECMP) routing is a method that allows traffic to be distributed across multiple paths with the same cost metric. This improves network performance by utilizing available bandwidth more efficiently and provides redundancy in case of path failure. In the context of VMware NSX, ECMP is particularly beneficial for scaling out data center networks and optimizing the use of multiple uplinks between the NSX Tier-0 Gateway and the physical network.
- A. Incorrect.
This is incorrect because ECMP does not restrict traffic to a single path. Instead, it leverages multiple paths to optimize performance and redundancy.
- B. Correct.
This is correct because Equal-Cost Multi-Path (ECMP) routing distributes network traffic across multiple paths with the same cost, improving bandwidth utilization and providing failover capabilities.
- C. Incorrect.
This is incorrect because ECMP focuses on using multiple paths with the same cost, not solely the shortest path.
- D. Incorrect.
This is incorrect because ECMP does not dynamically adjust route costs. It uses existing equal-cost paths for load balancing.