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Exam 350-401 All Questions

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Exam 350-401 topic 1 question 916 discussion

Actual exam question from Cisco's 350-401
Question #: 916
Topic #: 1
[All 350-401 Questions]

Which device, in a LISP router architecture, receives LISP map requests and determines which ETR should handle the map request?

  • A. proxy ETR
  • B. routing locator
  • C. map resolver
  • D. map server
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Suggested Answer: C 🗳️

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nj1999
Highly Voted 1 year, 2 months ago
Given answer is correct! When MS and MR function runs on separate devices: 1. ITR --'map-request'--> MAP-Resolver (MR) 2. MR --- forwards 'map-request' -----> MAP-Server (MS) 3. MS --- check DB for RLOC -- finds (ETR) 4. MS -- Sends 'map-request' to ------> Egress Tunnel Router (ETR) 5. ETR -- sends 'MAP-Reply' directly to ----->ITR When MS and MR function runs on same devices (which is this question): 1. ITR --'map-request'--> MAP-Resolver (MR/MS) 2. MS --- check DB for RLOC -- find (ETR) 3. MS -- Sends 'map-request' to ------> Egress Tunnel Router (ETR) 4. ETR -- sends 'MAP-Reply' directly to ----->ITR https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_lisp/configuration/15-mt/irl-15-mt-book/irl-overview.pdf
upvoted 12 times
pancadapy
11 months, 2 weeks ago
the best explanation ive ever seen on this website many thanks
upvoted 2 times
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[Removed]
Most Recent 10 months, 3 weeks ago
Selected Answer: C
C is correct
upvoted 1 times
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andriuka
1 year ago
It's confusing. Because either way MR gets requests, but MS finds ETR and the question asks for both functions at the same time. So which one?
upvoted 1 times
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