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NHRP Questions

March 27th, 2019 in CCIE Practice Questions Go to comments

Question 1

Refer to the exhibit.

debug_nhrp.jpg

NHRP registration is failing; what might be the problem?

A. invalid IP addressing
B. fragmentation
C. incorrect NHRP mapping
D. incorrect NHRP authentication

 

Answer: D

Question 2

Refer to the exhibit.

show_ip_nhrp.jpg

A spoke site that is connected to Router-A cannot reach a spoke site that is connected to Router- B, but both spoke sites can reach the hub. What is the likely cause of this issue?

A. There is a router doing PAT at site B.
B. There is a router doing PAT at site A.
C. NHRP is learning the IP address of the remote spoke site as a /32 address rather than a /24 address.
D. There is a routing issue, as NHRP registration is working.

 

Answer: B

Comments (5) Comments
  1. Rsko
    December 8th, 2014

    Hello,
    Can anyone explain Q5?

  2. Rsko
    December 8th, 2014

    Hello,
    Can anyone explain Q2 ?

  3. ces
    January 11th, 2015

    can anyone explain both questions?

  4. Q2
    January 28th, 2015

    Q2
    The ‘claimed NBMA’ part shows that NAT is used. 172.16.2.1 is the pre-NAT IP address. Not sure how to tell if it was PAT though.

  5. cisco_cert
    October 28th, 2015

    great link to understand this topic of one spoke behind a nat device:

    http://www.cisco.com/c/en/us/td/docs/ios/ios_xe/sec_secure_connectivity/configuration/guide/convert/sec_dmvpn_xe_3s_book/sec_dmvpn_dt_spokes_b_nat_xe.html

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