Home > DMVPN Questions

DMVPN Questions

September 6th, 2015 in ROUTE 300-101 Go to comments

Note: If you are not sure about DMVPN, please read our DMVPN tutorial first.

Question 1

Explanation

From the output we learn that the logical address 10.2.1.2 is mapped to the NBMA address 10.12.1.2. Type “dynamic” means NBMA address was obtained from NHRP Request packet. Type “static” means NBMA address is statically configured. The “authoritative” flag means that the NHRP information was obtained from the Next Hop Server (NHS).

Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_4/ip_addr/configuration/guide/hadnhrp.html

Question 2

Explanation

When DMVPN tunnels flap, check the neighborship between the routers as issues with neighborship formation between routers may cause the DMVPN tunnel to flap. In order to resolve this problem, make sure the neighborship between the routers is always up.

Reference: http://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike-protocols/29240-dcmvpn.html#Prblm1

Question 3

Explanation

DMVPN is not a protocol, it is the combination of the following technologies:

+ Multipoint GRE (mGRE)
+ Next-Hop Resolution Protocol (NHRP)
+ Dynamic Routing Protocol (EIGRP, RIP, OSPF, BGP…) (optional)
+ Dynamic IPsec encryption (optional)
+ Cisco Express Forwarding (CEF)

For more information about DMVPN, please read our DMVPN tutorial.

Question 4

Explanation

To allow communication to multiple sites using only one tunnel interface, we need to configure that tunnel in “multipoint” mode. Otherwise we have to create many tunnel interfaces, each can only communicate to one site.

DMVPN_Topo_mGRE.jpg

 

Question 5

Explanation

An mGRE tunnel inherits the concept of a classic GRE tunnel but an mGRE tunnel does not require a unique tunnel interface for each connection between Hub and spoke like traditional GRE. One mGRE can handle multiple GRE tunnels at the other ends. Unlike classic GRE tunnels, the tunnel destination for a mGRE tunnel does not have to be configured; and all tunnels on Spokes connecting to mGRE interface of the Hub can use the same subnet.

DMVPN_Topo_mGRE.jpg

For more information about DMVPN, please read our DMVPN tutorial.

Question 6

Explanation

GRE tunnels are the first thing we have to configure to create a DMVPN network so we should start troubleshooting from there. NHRP can only work properly with operating GRE tunnels.

Question 7

Comments
  1. Anonymous
    May 1st, 2016

    Last dump please. {email not allowed}.

  2. Anonymous
    May 1st, 2016

    Last dump please. “estebanld” “@” “hotmail” “.” “com”

  3. tofe
    May 20th, 2016

    please can i got the last dump
    {email not allowed}
    thanks for your help

  4. tofe
    May 20th, 2016

    please can i got the last dump
    “mustafaaalfaroq” @”yahoo” . “com ”
    thanks for your help

  5. Nei
    May 28th, 2016

    Hello all,

    If you are looking for premium dumps, send an email @ premiumdumps@zoho(dot)com whit the exam code.

    Cheers

  6. Mandy
    July 18th, 2016

    Got full marks in the 300-101. Thanks pass4surekey http://pass4surekey.com/exam/300-101.html

  7. Anonymous
    September 4th, 2016

    If someone has the latest pdf dumps please send it to me.
    info at anemosradio.com
    Thank you!!!

  8. Hit me
    October 4th, 2016

    I failed today with a 640. The ‘300-101: Implementing Cisco IP Routing’ exam is completely different then what is on this site. Not even close. There are maybe 10 questions that are the same… What happened???

  9. Digital Eagle
    October 9th, 2016

    Are there many questions on IPv6 now?

  10. tagwa ali
    October 10th, 2016

    for new dump 183q
    send to me in

    tagwatagelsir88 @ gmail . com
    i have it

  11. tagwa ali
    October 10th, 2016

    Hit me please i will ask u about exam please send me ur e-mail

  12. Digital Eagle
    October 11th, 2016

    Please email me
    skdf234 @ gmail

  13. pinimann
    October 13th, 2016

    please email me the new 183q
    pini2006-ccnp @ yahoo . de

  14. SwitchingPacketsRoutingFrames
    October 25th, 2016

    Don’t buy premium. Waste of money.

  15. Haana smith
    November 5th, 2016

    300-101 – I have download this one from https://www.braindumps4it.com/braindumps-300-101.html it has all the new questions , see below the new questions looks to me all are valid one that new are coming Perfect!!!!!!! This is the exact way of me understanding the problem. Thank you and god bless you.

  16. Muhammad Afzal
    November 7th, 2016

    haana smith,

    Please send me the latest dumps ? my exam is in this week. please help me.

    m_Afzal345 @ yahoo . com

  17. Io
    November 14th, 2016

    Everything you require to get ready and quickly pass the tough Cisco Certified Design Professional 300-101exam with 100% pass guarantee in first attempt. http://www.grades4sure.com/300-101-exam-questions.html

  18. Queen
    November 17th, 2016

    http://www.testmayor.com/300-101-test.html dumps is Valid. I took the test on Weds. 95% questions were from the Testmayor dumps. All questions and answers are valid, You’d better have to understand the technologies.

  19. Muhammad Afzal
    November 30th, 2016

    Hi, All,

    Passed yesterday, 149+40 Still valid, thanks to Tagwa.
    m _ afzal345 @ yahoo.com

  20. mourad
    December 2nd, 2016

    Q1: i The “authoritative” flag means that the NHS has learned about the NHRP mapping directly from a registration request (the NHS “serves” the particular NHC).
    i think the right respponse would be D

  21. Anonymous
    December 5th, 2016

    anyone have the ccda ?
    if so please email me teds2sscamaro at gmail dot com

  22. dash
    December 17th, 2016

    Please send latest dumps me to darshendash @gmail . com

  23. danny
    December 18th, 2016

    where r the questions?? i see Question 1 and then explanation. No options no questions same is with lab sims.. plz help !!!!

  24. JennYC
    January 9th, 2017

    Hi guys. I really need this exam badly, can anyone send the latest dumps including the simulations please. Thank you in advance :*
    {email not allowed}

  25. Anonymous
    January 15th, 2017

    Please send dumps to telgin1980 -at- gmail – dot – com

  26. Anonymous
    January 31st, 2017

    Please send dumps to mpl80766atgmaildotcom

  27. ExamOnFeb21st2017
    February 17th, 2017

    @Anonymous

    please tell me if the dumps in drive you shared are valid?

    i have exam on feb 21 2017
    really appreciate if you can confirm

    thanks a lot for sharing the dumps. thank you sincerely.
    you are like a life saviour

  28. Anonymous
    February 18th, 2017

    Everyone swears by the dumps, so I’d say they’re valid. That’s what I’m studying.

  29. Lost
    March 24th, 2017

    I just took test 24 March
    Half of the questions are not in the dumps

  30. Lost
    March 24th, 2017

    Route test

  31. Lost
    March 24th, 2017

    I just took test 24 March
    Half of the questions are not in the dumps
    Route test

  32. noname
    March 31st, 2017

    I took the exam 30 march my score 770 more than 15 questions are not in the dumps

  33. RocketRaccoon
    April 25th, 2017

    I was going through CCNP Route and Tshoot Book and i couldn’t find the configuration part. I just wanted to know if DMVPN, mGRE, IPSec is part of the exam? In exam syllabus it says, Describe only.

  1. No trackbacks yet.