Home > ICND2 – EIGRP


April 19th, 2015 in ICND2 200-101 Go to comments

Note: If you are not sure about EIGRP, please read my EIGRP tutorial.

Question 1


When a router has no EIGRP feasible successor and the successor route to that destination network is in active status (the successor route is down, for example) a route recomputation occurs. A route recomputation commences with a router sending a query packet to all neighbors. Neighboring routers can either reply if they have feasible successors for the destination or optionally return a query indicating that they are performing a route recomputation. While in Active state, a router cannot change the next-hop neighbor it is using to forward packets. Once all replies are received for a given query, the destination can transition to Passive state and a new successor can be selected.

(Reference: http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080093f07.shtml#rout_states)

Question 2

Question 3


Feasible successor is a route whose Advertised Distance is less than the Feasible Distance of the current best path. A feasible successor is a backup route, which is not stored in the routing table but stored in the topology table.

Question 4


From the routing table we learn that network is learned via 2 equal-cost paths ( & -> traffic to this network will be load-balancing.

Question 5


First we must notice that all the 4 answers are parts of the “show ip eigrp topology” output. As you can see, there are 2 parameters in the form of [FD/AD] in each answer. For example answer C has [46152000/41640000], it means that the FD of that route is 46152000 while the AD is 41640000.

To become a feasible successor, a router must meet the feasibility condition:

To qualify as a feasible successor, a router must have an AD less than the FD of the current successor route

In four answer above, only answer B has an AD of 128256 and it is smaller than the FD of the current successor route (41152000) so it is the feasible successor -> B is correct.

Comments (64) Comments
  1. Router47
    December 4th, 2013

    Question number confuses me…the explanation on this page says the FIRST number and the SECOND number are (FD/AD)

    Yet on the EIGRP tutorial page, it says the FIRST number is and i quote “the metric from Router0 to the destination” and the SECOND number is the AD

    Which is it?

  2. Roy
    December 14th, 2013

    Maybe you mean the output of “sh ip route”?
    There you have [AD/Metric]

  3. Joseph
    December 18th, 2013

    But C & D as well is the same concept which is AD is less than FD.

  4. Joseph
    December 19th, 2013

    sorry I was wrong there. apology

  5. char007
    February 10th, 2014

    in the sh ip route what you can see is ad/metric where AD is Administrative Distance not advertise distance.

  6. Andrew
    March 17th, 2014

    In the output for #show ip route
    should be via NOT
    via NOT

    The address of the next hub routers is Wrong.

  7. Maxmesr
    March 23rd, 2014

    @Andrew your are right with that, the IP address of the next hop router in both case are wrong, but by other part, the answer option only say the Router Name, and no see problem about with this error in the figure. but its very important can see this error

  8. Amir Reza
    March 24th, 2014

    @Andrew, and all, you know it’s funny ! we are studying ICND and CCNA for less than a year and I individually saw many mistakes in Cisco exams like above, in my ICND1 exam I found two mistakes during exam and I commented it, however those mistake didn’t change the answer but how come that such a huge company exam designer are acting like this ! Do they have CCNA ? 😀
    ( In my exam , in one Router , after running #sho ip int br , it shows an IP address for Fa0/0 while by running #sho inter fa 0/0 it shows slightly different one like one IP after that 😀 )

  9. Maxmesr
    March 26th, 2014

    @Amir Reza, in my ICND1 test I haven the same error, Why cisco dont see that king of error

  10. Nelson
    March 31st, 2014

    I can’t understand the explanation of Q5. It seems to me that the AD number is smaller in all the ratios for all possible answers here.

  11. Kerim Mirek
    April 7th, 2014

    Question 1 little bit confusing, because “in active” means for me “active”,but should be probably written “inactive or in-active(because its divided on two lines)” which means “shut down” ….and maybe I am wrong =)

  12. Donald
    April 8th, 2014

    @ Kerim Mirek
    Q1 is confusing me, too. I’ve also seen this question/answer on other sides but in my mind the text in the question is wrong (like you described) or the answer is wrong.

  13. Donald
    April 9th, 2014

    @ Kerim Mirek / Q1, again
    I got the answer from a colleaguge.
    Passive State means the router does not search for a new route (because the successor route or feasible route and related interface are working)
    Active State means the router is searching for a new route (because the successor route and feasible route does not work, e.g the related interface is down)

  14. NetworkPro
    April 11th, 2014

    BTW nailed my ICND2 with a perfect score now a CCNA!

    To clear up some confusion for you for EIGRP the metrics/k values and AS do indeed have to match in order for two routers to form a neighbor Adjacency in EIGRP. The below I am pasting is directly from Cisco quick reference guide:

    “Neighbor Discovery and Route Exchange
    When EIGRP first starts, it uses hellos to build a neighbor table. Neighbors are directly attached routers that have a matching AS number and k values. (The timers don’t have to agree.) The process of neighbor discovery and route exchange between two EIGRP routers is as follows:”

  15. mike
    April 11th, 2014

    @ Kerim.

    in Q1, I think the point is that EIGRP will always search for a back-up (or feasible successor) route. In the question it mentions that the successor is “active” – i think they just mean “up and running”. If the successor is up and running, EIGRP will still search for a back-up route, for when the successor fails. If the successor route is down, it will search for a successor and a feasible successor..

    i don’t think they just mis-typed *In*-active.

  16. mike
    April 14th, 2014

    Took ICND2 earlier today, 986 / 1000.

    Question 2 from this page was on there.

  17. sami
    April 26th, 2014

    hi all
    subscribe to that channel http://www.youtube.com/user/Joynetworks for free

  18. fez
    May 8th, 2014

    2,3 were there

    Passed today my ICND@2 by 1000. Got different configuration of the Eigrp & frame Relay labs where there were different DLCIs and IP addresses, but same process was used to get answers (show commands, show ip protocols, show ip interface brief ).

    A question about GLBP and a question about netflow were on my test. You can find them here: http://www.examtut.com/2013/09/new-questions-in-ccna-200-120-hsrp-vrrp.html

    Study 9tut and this guy i found him really helpful. He has unique way of teaching http://www.danscourses.com If you can do all his videos again and again. Trust me you will get the concept. Also one thing i learned today is if you don’t know the concept it’ll be hard for you in the exam.

    All the best to every one in their path. Keep me in your good wishes.

  19. awesome
    May 22nd, 2014

    Q5 changed a bit, an entry was shown with FD like (Serial0.1), from, Send flag is 0x0
    Composite metric is (53973248/128256), Route is Internal

    after applying feasible successor rule, in options you had to select which route is successor route

  20. izzarazzu
    June 28th, 2014

    Took the exam today. Pass 986/1000. Q2 were on there.
    Thanks 9tut.

  21. maps
    July 14th, 2014

    took the exam yesterday and passed with 1000/1000. 9tut is superb..many questions from here. There was one question related with EIGRP Feasible successor network which was not mentioned .

    Find the network which is feasible successor
    R3# show ip eigrp topology
    IP-EIGRP Topology Table for AS(1)/ID(

    Codes: P – Passive, A – Active, U – Update, Q – Query, R – Reply,
    r – reply Status, s – sia Status

    P, 1 successors, FD is 2560
    via Connected, Serial1/0
    P, 1 successors, FD is 2560
    via Connected, Serial1/1
    P, 2 successors, FD is 3840
    via (3840/1280), Serial1/2
    via (3840/1280), Serial1/3
    P, 1 successors, FD is 2560
    via Connected, Serial1/2
    P, 1 successors, FD is 2560
    via Connected, Serial1/3
    P, 1 successors, FD is 3072
    via (3072/512), Serial1/3
    via (4352/1792), Serial1/2

  22. Simon
    August 2nd, 2014

    No idea how you got the answer to question 5.
    EIGRP will pick the 2nd best route to be the feasible successor. To me that seems like answer C where the FD is way lower then the FD is answer b

  23. Dev
    August 7th, 2014

    @Simon EIGRP looks at the advertised distance (after the slash) for choosing a feasible successor not the feasible distance (before the slash) of the potential route.

  24. Ant
    August 20th, 2014

    Tested today, 8/20. #2, 4 were on there.

  25. Mikey
    September 7th, 2014

    Me either just can’t seem to understand Q5 for nothing…

  26. sam
    September 16th, 2014

    Also for Question 5. We can easily guess B is the answer just because the question says 1 Successor and the Answer B has Hop Count as 1 and all the other options have Hop Count as 2.

  27. Georges
    September 27th, 2014

    took the exam today and pass with 907. Question 2 and 4 were on there.
    location United States Florida.

    test ICND 2

    Thanks 9tut

  28. Latheef
    November 13th, 2014


    life saver site to download the CISCO packet tracer software for free and stress free.

  29. Himal
    November 14th, 2014

    Tkz Latheef

  30. JC
    December 11th, 2014

    Got 1000 today, thanks to 9tut
    A new EIGRP question came up that i had not seen before,
    cant remember it completely but it gave either 3 or 4 routers, A, B, C & D
    with a number of networks, all routers were EIGRP enabled & no auto summary in the config
    you needed to give the ip addresses that would appear in A’s routing table (pick 3 of 6)
    so understand vlsm & possibly summarization (if the question changes)
    Sorry I don remember more but i wasnt concentrating on remembering the questions!

  31. Jp
    December 21st, 2014

    Q3 on my exam today

  32. javier
    January 9th, 2015

    hello; the questions 5 ; this answer is B ? Is Correct ?? thanks

  33. Chris
    January 22nd, 2015

    Going to take exam at 11:30 today..nervoused..:(

  34. Rosto
    February 3rd, 2015

    question 5 : Yes answer is B
    128256 < 41152000
    To be FS your AD most be lower than the FD of the successor

  35. Anonymous
    February 23rd, 2015

    Hello chris, how did it go . Pls share with us. Thanks.

  36. Montasir Osman
    March 19th, 2015

    Q4 was there

  37. barney
    March 20th, 2015

    passed on 3/13. question 3 on it. tks 9tut

  38. JB
    April 26th, 2015

    Q1 it should state “inactive” not ” in active” two very different things.

  39. dinoz
    May 6th, 2015

    Q1 is written correctly and the answer is C. When a route in the EIGRP topology table has a status of “A” for active, that means the router is actively looking to confirm a route to that network with its neighbors. The way EIGRP actively looks is by querying its EIGRP neighbors. In the topology table “A” is bad and “P” is good (P means passive or “stable”.)

  40. Marco
    May 13th, 2015

    I got Q2, Q3, Q4 today in my ICND2 exam.
    Thanks 9tut.

  41. Prep
    May 28th, 2015

    Had a new EIGRP question.
    It showed a topology with 4 routers configured in the same AS.
    They all had auto summary enabled and had IPs from class A, B and C assigned across their interfaces.
    Question was which EIGRP routes would appear in the R1 routing table.

    Selected the 3 classFULL addresses (/8, /16 and /24) and passed with 1000 🙂

  42. Josh
    May 29th, 2015

    GO LOOOK AT 9tut CCNA EIGRIP THIS ICND2 study page is missing questions. And know your k weights I had a 1 question on them
    And the post above me is on test

  43. Grisha82
    June 22nd, 2015

    Got Q4 today in Moscow.

  44. Anonymous
    June 26th, 2015

    guys download dumps with nuggets free from this following link
    wurl. cc/dumps

  45. Anne Normous
    July 1st, 2015

    Just took the test today – 980/1000 ALL 5 questions came from this page. Thanks 9tuts! Also got Frame Relay, EIGRP and OSPF labs

    THERE IS NO NEED FOR ANY DUMPS – just study one book (Wendel or Todd) and the you tube lessons available free for visual knowledge. Along with 9tuts these are enough for 900 and over marks with ease.

    But you MUST understand the concepts and not mug up the answer as they change the options and answers

  46. 9tut
    July 13th, 2015

    @all: We had to move all the questions and answers out of 9tut. We can only keep the explanation. You can download the questions and answers at: https://mega.co.nz/#!oIdESYbD!yyu33vygrfKPy4rcmcbV6qW2fxINNoTokuDM3CjA_og

  47. Anonymous
    July 14th, 2015

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  48. 9tut
    July 14th, 2015
  49. Passed
    July 16th, 2015

    Hey thank you for this website. Some of the stuff in my Cisco press books didn’t even cover things that were on the test like the hello and dead timers for OSPF. Maybe my books were old, I don’t know. Thanks again for this website it really helped me understand what I was looking at and it made a bunch of things clear. It’s worth it folks but don’t just memorize, you need to actually understand whats happening. I used CBT Nuggets, Youtube, Cisco Press ICND1 and ICND2 books and 9Tut.

  50. Rob
    July 21st, 2015

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  51. Nawaz
    July 23rd, 2015

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  52. Godwin
    August 29th, 2015

    please can you include the questions and the explanation together for clarification? thanks

  53. Soph
    November 22nd, 2015

    Just to echo what Godwin said – any chance we could get the questions that go with the answers please? Thanks

  54. furmal
    November 26th, 2015

    can some one explain again for question where it asked the feasible successor?? i think its question 3? also where can i find virtual test simulator?

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    June 2nd, 2016

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  56. fruee
    June 21st, 2016

    Why do i only see explanations?? I don’t see the questions

  57. ketr
    June 21st, 2016

    Is there a PDF for ICND2 thats recent? I only found 1 of 2015

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    June 30th, 2016

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    June 30th, 2016

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    September 5th, 2016

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    September 18th, 2016

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  62. Ble!1
    September 19th, 2016

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  63. pjc118
    October 12th, 2016

    Re: ICND2 200-105

    When will some practise questions be available. Thanks

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