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Exam 300-101 topic 2 question 454 discussion

Actual exam question from Cisco's 300-101
Question #: 454
Topic #: 2
[All 300-101 Questions]

If the primary path goes down, what will EIGRP use to reach a destination?

  • A. administrative distance
  • B. advertised successor
  • C. successor
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Suggested Answer: D. feasible successor 🗳️
The key to this question is the four terminology about DUAL. Enhanced Interior Gateway Routing Protocol (EIGRP) is an enhanced distance-vector protocol based on the diffusing update algorithm (DUAL). It is capable of (conservatively) finding all loop-free paths to any given destination based on route advertisements from neighbors. The neighbor (or neighbors) with the best path to a destination is called the successor. The remaining neighbors with loop-free paths to the destination are called feasible successors. To reduce traffic load on the network, EIGRP maintains neighbor relationships and exchanges routing information only as needed, using a query process to find alternate paths when all loop-free paths to a destination have failed.

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diegonamaste
5 years, 2 months ago
D. feasible successor
upvoted 1 times
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