300-440 Question 78
Select 2A network engineer is configuring Enhanced Interior Gateway Routing Protocol (EIGRP) on a network and needs to manipulate the routing metrics to influence path selection. The goal is to prioritize links with higher bandwidth and lower delay. Which combination of EIGRP metric components should the engineer adjust to achieve this?
- A
Bandwidth
- B
Delay
- C
Reliability
- D
Load
- E
Hop count
Show answer and explanation
Correct answers: A, B
Explanation
EIGRP uses a composite metric that includes bandwidth, delay, reliability, and load. However, by default, only bandwidth and delay are used in the metric calculation. To influence path selection based on higher bandwidth and lower delay, the engineer should adjust these two components. Reliability and load can be included in the metric if explicitly configured, but they are not required in this scenario, and hop count is not used by EIGRP.
- A. Correct.
Adjusting the bandwidth component allows EIGRP to prefer routes with higher bandwidth, aligning with the requirement to prioritize links with higher throughput.
- B. Correct.
Delay is a key EIGRP metric that represents the cumulative delay of a route. Lower delay values result in preferred routes, meeting the requirement to prioritize links with lower delay.
- C. Incorrect.
Reliability is an optional EIGRP metric that measures the consistency of a link. While it can influence route selection, it is not relevant to bandwidth or delay prioritization.
- D. Incorrect.
Load is another optional EIGRP metric that indicates traffic utilization on a link. While it may be useful in some scenarios, it does not directly affect bandwidth or delay prioritization.
- E. Incorrect.
Hop count is not a metric used by EIGRP for path selection. It is primarily associated with RIP (Routing Information Protocol).