Home > Ticket 14 – EIGRP Passive Interface

Ticket 14 – EIGRP Passive Interface

April 23rd, 2018 in TSHOOT v2 Go to comments

the neighborship between R4 and DSW1 wasn’t establised. Client 1 can’t ping R4
Configuration on R4:
router eigrp 10
  passive-interface default
  redistribute ospf 1 route-map OSPF->EIGRP
  default-metric 10000 100 255 1 10000
  no auto-summary

Answer 1) R4
Answer 2) IPv4 EIGRP Routing
Answer 3)  enter no passive interface for interfaces connected to DSW1 under EIGRP process (or in Interface f0/1 and f0/0, something like this)

Note: There is a loopback interface on this device which has an IP address of so we have to include the “network” command.


* Just for your information, in fact Clients 1 & 2 in this ticket CANNOT receive IP addresses from DHCP Server because DSW1 cannot reach (an loopback interface on R4) because of the “passive-interface default” command. But in the exam you will see that Clients 1 & 2 can still get their IP addresses! It is a bug in the exam.

Comments (50) Comments
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  1. Mike
    November 26th, 2014

    Joe: It’s simply because the passive Interface(s) between DSW1 and R4 prevents the important IPv4 (EIGRP) Communication between the two devices, so the DHCP Info cannot be delivered to our Clients within vlan 10 from DHCP Server R4 – OK!?

  2. usaguishiro
    December 1st, 2014

    Passed today with 1000/1000.
    Only you need to know Khartak strategy.
    If you want, you can adapt the strategy for your use in the exam.
    Only one tip: write your strategy in a paper during the exam.
    Thanks NetworkTut.

  3. fornamas
    December 10th, 2014

    Tomorrow I will have my exam: I’ve read about some change in DD and MCQ, can anyone define the differences?
    Same arguments and different choice or other arguments?

  4. Rizmy
    December 17th, 2014

    Yesterday. cleared the exam with 986/1000. 2 Multiple choice and 1 Drag & Drop. 13 TTs. Particularly this EIGRP Passive Interface trouble ticket came. in this trouble ticket when you issue show run command your will get passive interface configured under EIGRP 10 process.
    But when you issue show ip eigrp neighbor command it says Neighbors for AS 1. I think this should be a bug in the exam. Started my CCNP Track on October 2014 and completed on December 16.

  5. dog
    December 21st, 2014

    Guys the tickets at this site are 14 but the packet tracer files from the download link are 15 (PT 642_832 TSHOOT Ticket 15.pkt), how can we work parallel one by one, for example:

    Ticket 1 – OSPF Authentication = to which .pkt file it goes?
    Ticket 11 – OSPF to EIGRP = to which .pkt file it goes?
    Thanks !

  6. Cat
    December 21st, 2014


    It’s very simple – The Packet Tracer Ticket order within the downloaded .zip Package, is just like the Ticket order here on Net Tut…

    The “PT 642_832 TSHOOT Ticket 15.pkt” Lab is just an extra potential Ticket (IP Helper problem), that might show up @ exam…

    Hope this helps.

  7. Mohsin
    December 27th, 2014

    I’m wondering if all the TTs will be shown in the configuration at once, I mean if R1 have 4 TTs for BGP Neighbor wrong IP, missing IP in ACL, missing IP in NAT ACL and OSPF Authentication. while the question will still say that the client 1 can’t ping WebServer???

    thanks for those who are reading and answering questions.

  8. Johnny
    December 28th, 2014

    Answer on this @ Ticket 1 forum page 18 (by Dec. 28 2014).

  9. Rizwan
    January 5th, 2015


    I will be writing the exam on 1/7,please confirm me is there any changes in the questions?
    I prepared the Khattak strategy,Flow chart and i refered the networktut??

    Please help me on this.


  10. OldRick
    January 6th, 2015

    Just get TSHOOT 1000/1000 Note: Ticket 14 eigrp passive interface answer 3 is different have to choose something like; under fastethernet 0/0 and 0/1 apply command ‘no passive-interface’

  11. Anonymous
    January 12th, 2015

    I Agree 100% with Mian!!!

  12. Tshoot Man
    January 14th, 2015

    @Mian: Good one.
    The lease time could be the only possible reason that the client is till on the DHCP IP even though the DHCP router allotting the same is not reachable.

  13. beezer
    January 15th, 2015

    swear i got this one twice! passed though. all i wanted. tx networktut

  14. beezer
    January 15th, 2015

    @ Rizmy yup! thats exactly what the test said!!! the eigrp process was off!! twice man…so confusing and such BS. but whatever. pass is pass.

  15. Anonymous
    January 15th, 2015

    Although Rizmy and beezer are right about the bug in the exam, it is quite simple to distinguish if the problem ticket is about a wrong AS or about passive interfaces.

    When show ip protocol shows the wrong AS but NO passive interfaces, then the ticket is about the wrong EIGRP AS configuration, and vice versa (if show ip protocols shows passive interfaces AND wrong EIGRP AS (bug) then its obviously about passive interfaces configured under EIGRP routing).

    Everyone agree?

  16. Tshoot Man
    January 15th, 2015

    (if show ip protocols shows passive interfaces AND wrong EIGRP AS (bug) then its obviously about passive interfaces configured under EIGRP routing)

    I believe you are saying that in the same SD:

    Wrong AS
    Passive interfaces under EIGRP

    Is that possible?

    @Exam Passers:
    Kindly confirm if anyone faced the same scenario since that would be something crazy.

  17. Anonymous
    January 15th, 2015

    @Tshoot Man

    No, All i’m saying is that some people are confused due to the bug in the exam, and i’m only explaining a possibility how to tell the difference between a bug and an intentional misconfiguration.

    in summary:
    EIGRP AS ticket = R4 running config shows wrong AS; show ip protocol/neighbors shows wrong AS = no bug
    Passive I/F ticket = R4 running config shows EIGRP AS 10 and passive i/f; show ip prot/neighbors shows AS 1 = bug

    Hope this clears things up

  18. Anonymous
    January 16th, 2015

    just passed my exam. score 1000
    No D&D, few MQ and 13 TT.

    This ticket (Passive I/F) is indeed tricky.
    Running config and show ip protocols indeed show EIGRP process 10, but ip eigrp neighbours shows process 1.

    Also the answers give you 2 possible solutions
    1) change eigrp process 10 to 1 to match DSW1 and DSW2 (wrong answer)
    2) enable eigrp for interface fa0/1 and 0/2 by issuing command no passive-interface (without mentioning to issue this command under eigrp process 10)

    Not sure if ip eigrp neighbours process 1 a bug or intentional, but just be careful when choosing the correct answer.

  19. Tshoot Man
    January 16th, 2015

    Thanks a ton for clarifying the dicey situation.
    This indeed boosts up my confidence for tomorrows exam.
    Would update you once done.

  20. Tshoot Man
    January 17th, 2015

    Scored 1000/1000.
    Read Tshoot FAQ for my reviews.
    There is a typo in the review provided. 2mcq, 1 DnD and 13 SD’s.

  21. Anonymous
    January 19th, 2015

    Passed 2day with 1000/1000.. All TT’s valid
    This specific TT (EIGRP Passive Int) can lead you astray if you do ‘#sh ip rout eigrp’ (it will show process 1).. So check it with ‘#sh runn’ (here the process id will be 10) and “passive-interface default” will be under router eigrp 10…
    Answer is ‘enter no passive interface under Interface f0/1 and f0/0’

  22. Student4help
    January 20th, 2015

    “””””Ticket Answers + Tech notes and Tips & Tricks etc. are supplied within the available PULL DOWN MENU, located at the MIDDLE/BOTTOM of each Packet Tracer Main Screen – Pls. click at the small “v”-sign there, to select a Ticket Answer etc. from the Menu.””””””

    what does the above statement means, i am not able to find the PULL DOWN MENU, please guide.

  23. Mohamed
    January 21st, 2015

    Gonna write the exam within 2 days..any news tips dears..???

  24. NJDEVIL03
    January 22nd, 2015

    The simplest way to solve this ticket is to take a look at the routing tables of DSW1 and DSW2!!! If there are no OSPF routes via the redistribution command on R4, and no default gateway listed in the routing tables of DSW1 and DSW2, then there is an agency issue between R4, DSW1 and DSW2. Without full routing tables on the MLS’s you can surely determine an adjacency issue, and skip the sh ip eigrp neighbor command. At this point I would issue the show ip protocols command under the eigrp instances of DSW1, DSW2 and R4, and then issue a show run command under paying careful attention to and comparing the configuration of each eigrp process.

    Many ways to skin a Cisco cat!!!!

  25. NJDEVIL03
    January 22nd, 2015

    Correction: I would issue the sh ip protocols command under global config mode NOT under the eigrp process!!!!! Feel like a rookie just now!!! OOPS!!!

  26. Amber
    January 22nd, 2015

    Simple solution for the confusion. sh ip protocols on dsw1+2, whatever eigrp as is listed there is the correct one because they are functional so r4 should match that. If the answer says to change as # to something other than what is shown for dsw1+2, it is the wrong answer. So as Anonymous said, one option is to change as from 10 to 1, however, if dsw1+2 are in as 10 this is wrong so obviously the issue will be with passive-interface.

    So in short, check dsw1+2 ip protocols, check answer options, if it says change as 10 to 1 then look for another solution which we know will be passive-interface.

  27. DreamComeTrue
    January 28th, 2015

    First of all thank GOD!

    Thank you networktut, 9tut and certprepare! I was able to finish my CCNP journey because of this site! Thanks to all the people who contributed their knowledge!

    I passed my CCNP TSHOOT 1000/1000!!! all i did was follow Khattak Strategy, Practice the Packet tracer provided on this site and familiarized IGOR’s 57 questions… it’s awesome…
    no bugs for me but please read the questions and choices very carefully because it is very tricky…
    i got 2 MCQ’s and 1 D&D. 13 tickets, no ip helper address and EIGRP wrong AS! be careful with the Passive interface ticket, it is a bit tricky…
    ABORT is your bestfriend in this exam! use abort to check and verify the configurations of the other tickets. Take your time and relax! Good Luck to whoever will take the exam today! Its the last day for CCNP Version 1!

    To God Be All the glory, Praises and Adoration! in Jesus name! AMEN!

  28. DreamComeTrue
    January 28th, 2015

    and it is important to write your strategy before you begin answering the exam.
    mark those strategies that are finished…

    again thank u so much for this site!

  29. Anonymous
    January 30th, 2015

    i just cleared my exam yesterday and thanks for this website and cisco.com

  30. me@here.com
    March 10th, 2015

    Took it today; MOSTLY the same…but FOUR tickets were ipv6….not only one.

    I got mired down in one specific example as I was “turned around” and trouble shooting in the wrong area (thought the issue was in R2 ….and in the end it was missing ipvp ospf 6 area 34 command….BUT when I went to enter that answer in the ticket…the option was not there at all.

    I spent another 10 min looking for something ELSE ….and evetually gave up on the question.

    Guys…>DO NOT PACE yourself on the thoughts that there is only one IPV6…..more then HALF of what I saw was issues between two IPV6 loopbacks through that GRE tunnel 34.

    sometime dies at R4 other times R3…..good luck to you.

  31. Vajii
    May 4th, 2015

    Does the ABORT Option wurk on CCNP ver 2.0?

    Can you use while in any tix?

    Why use?

    Ty TLL!

  32. Eric Manns
    June 23rd, 2015

    @ Vajii

    There is no abort option in new exam.

  33. ahamd
    June 24th, 2015

    Pass 1000/1000

    Ticket 14 Answer ( 3 ) under EIGRP process enter no passive interface .


  34. moa
    November 8th, 2015

    Is this hint mention in the exam ??

    the neighborship between R4 and DSW1 wasn’t establised. Client 1 can’t ping R4

  35. Aditya
    December 15th, 2015

    since R4 has fa0/0 and fa0/1 as passive
    why does R4 list both DSW1 and DSW2 as neighbor?(none should be listed)
    And why does DSW2 list both R4 and DSW1?(should list only DSW1)?
    DSW1 correctly lists only DSW2

  36. Aditya
    December 15th, 2015

    Am referring to “show ip protocols” command
    this shows correctly:
    “show ip eigrp neighbors” on R4 doesnt show DSW1 and DSW2
    “show ip eigrp neighbors” on DSW2 doesnt list R4

    guess there is a bug???

  37. Aditya
    December 15th, 2015

    @networktut..another Q
    why does R4 advertise——

    (And no mention of network
    in the lab simulation…
    unable to understand how to club these into single statement..are you summarizing??)—–lo0 was”32″—– lo1 was”27″


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    December 18th, 2015

    ello there! This blog post couldn’t be wttiren any better! Going through this post reminds me of my previous roommate! He always kept talking about this. I am going to send this article to him. Pretty sure he’s going to have a great read. Many thanks for sharing!

  39. DJsavana
    December 18th, 2015

    Hi Lewin or KROMI have discovered a new bug.In game: when i seclet my fight units for the first time,the game would crash.The rest of the game is ok.After the crash, i can choose between continous playing orclose program.If i choose continous the would run OK.But when i seclet my fight units again,the same crash will happen.Online game ended with messages like server stopped responding)’So, is there a solvation for this.And is this bug already familiar by you?And i am the only guy with this problem?I you have any questions,please ask.Hope to hear it soon.I have send already a mail to you.Greetz NL Vortex Damage

  40. Plack
    December 18th, 2015

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  41. R4 –EIGRP Passive Interface–Failed with 710!!
    January 8th, 2016

    This was on test……

    I believe on my test under Router Eigrp 10

    I saw Passive Interface Default
    and No Passive Interface default Fa0/1……but there was nothing about fa0/0…to the DHCP server….

  42. Sathish
    March 7th, 2016

    Passed today with 1000/1000,

    For EIGRP PASSIVE INTERFACE only show ip eigrp neighbor showing AS 1 (BUG), rest of the all show ip eigrp commands and show ip protcols also in running confing
    is showing as AS 10.

  43. CCNPRS
    April 18th, 2016

    I passed today 1000, this ticket is on the exam. all tickets and mcqs are valid on this site.

  44. CCNP
    April 20th, 2016

    Had the exam yesterday , i had the eigrp question but under the router eigrp i saw the passive-interface default and , auto-summary was there!!!

    i was shocked .

    Any body had the same thing

  45. Aamir Khan
    April 23rd, 2016

    In the test for each ticket question did they mention that which that ticket for. example HSRP TACKING , BGP NEIGHBOR , NAT ACL ETC. THANKS

  46. John
    June 4th, 2016

    Solving TT#14 via Packet Tracer (6.1):

    1) Verifying the EIGRP (Pass I/F) config problem:


    Type escape sequence to abort.
    Sending 5, 100-byte ICMP Echos to, timeout is 2 seconds:
    Success rate is 0 percent (0/5)

    and also on problem device R4:

    R4#sh ip eigrp neigh
    IP-EIGRP neighbors for process 10
    R4#sh ip eigrp int
    IP-EIGRP interfaces for process 10
    Xmit Queue Mean Pacing Time Multicast Pending
    Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes
    2) Then solving the EIGRP config problem:

    R4(config)#router eigrp 10
    R4(config-router)#no passive-interface fa0/0
    %DUAL-5-NBRCHANGE: IP-EIGRP 10: Neighbor (FastEthernet0/0) is up: new adjacency {—– !!!
    R4(config-router)#no passive-interface fa0/1
    %DUAL-5-NBRCHANGE: IP-EIGRP 10: Neighbor (FastEthernet0/1) is up: new adjacency {—– !!!
    R4(config-router)#no passive-interface lo21
    %SYS-5-CONFIG_I: Configured from console by console

    3) Finally verifying the change that solved the EIGRP (Pass I/F) config problem:

    R4#sh ip eigrp neigh
    IP-EIGRP neighbors for process 10
    H Address Interface Hold Uptime SRTT RTO Q Seq
    (sec) (ms) Cnt Num
    0 Fa0/0 11 00:00:27 40 1000 0 32 {—– !!!
    1 Fa0/1 14 00:00:25 40 1000 0 40 {—– !!!
    R4#sh ip eigrp int
    IP-EIGRP interfaces for process 10
    Xmit Queue Mean Pacing Time Multicast Pending
    Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes
    Fa0/0 1 0/0 1236 0/10 0 0 {—– !!!
    Fa0/1 1 0/0 1236 0/10 0 0 {—– !!!
    Lo21 0 0/0 1236 0/10 0 0

    Type escape sequence to abort.
    Sending 5, 100-byte ICMP Echos to, timeout is 2 seconds:
    Success rate is 100 percent (5/5), round-trip min/avg/max = 73/138/226 ms


    Problem seems to be solved, and we’ve now full connectivity towards the external web server in this Packet Tracer Ticket # 14 !

  47. Jupiter
    June 13th, 2016

    @John or anyone else who knows

    Do we actually have to fix the issue or just answer questions like we do here?

  48. John
    June 14th, 2016

    just answer questions like we do here, although it’s REAL GOOD Exam Training to practise also the various Packet Tracer Tickets provided here.
    Within these PT based Tickets, You can Practice also SOLVING the various TSHOOT Ticket Problems, which (most often) strength’ens the technical skills of the student…
    However you decide yourself of course….
    Good luck at exam!

  49. Jupiter
    June 14th, 2016

    Thank you for your quick response. I am practicing solving these tickets. I wanted to check to see if it was like the other tests where you actually fixed the issue. I saw you were writing commands to fix the issue, but didn’t know since I cannot get into configuration mode.

  50. John
    June 16th, 2016


    Yes, at TSHOOT exam and within the Premium Simulator here, you can’t get into any IOS configuration mode, because it’s only a matter of gathering / analyzing / troubleshooting relevant info from the TSHOOT infrastructure provided, and then answering the 3 questions for each TSHOOT Ticket correctly.

    The PT Tickets provided here just makes this studying / training process a little easier (hopefully) – That’s all!

    Whish you well at exam!

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