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GRE Multilink Sim

September 11th, 2017 Go to comments

Refer to the topology below and answer the following questions.

Topology.jpg

Note: There may be different faults in this sim so please notice the following faults:

1. ACL blocking traffic on interface between R2 and R3
2. The network was not advertised in EIGRP
3. Two routers couldn’t establish adjacency because of ACL
4. Another two routers couldn’t establish adjacency because of wrong IP configuration on interface between them

Question 1

Explanation

The Branch2 network is communicating to the Server farm, which is connected to R2, via GRE Tunnel so we should check the GRE tunnel first to see if it is in “up/up” state with the “show ip interface brief” command on the two routers.

On Branch2:

Branch2_show_ip_interface_brief.jpg

On R2:

R2_show_ip_interface_brief.jpg

We see interfaces Tunnel0 at two ends are “up/up” which are good so we should check for the routing part on two routers with the “show running-config” command and pay attention to the static routing of each router. On Branch2 we see:

R2_show_run_static.jpg

The destination IP address for this static route is not correct. It should be 192.168.24.1 (Tunnel0’s IP address of R2), not 192.168.24.10 -> Answer C is correct.

Note: You can use the “show ip route” command to check the routing configuration on each router but if the destination is not reachable (for example: we configure “ip route 10.10.10.0 255.255.255.0 192.168.24.10” on Branch2, but if 192.168.24.10 is unknown then Branch2 router will not display this routing entry in its routing table.

Note: The IP address or configuration may be different in the exam.

Question 2

Explanation

First we should check Branch3 (and R1) with the “show ip interface brief” command to find any Layer1/Layer 2 issue.

Branch3_show_ip_interface_brief.jpg

We see the interfaces connecting between them are in “up/down” states which indicates an Layer 2 issue so we should check the configuration of these interfaces carefully with the “show running-config” command and pay attention to these interfaces.

R1_show_run_interface.jpg

and on Branch3:

Branch3_show_run_interface.jpg

We learn from above config is R1 is using CHAP to authenticate Branch3 router (via the “ppp authentication chap” command on R1). Branch3 router is sending CHAP hostname “Branch_3” and CHAP password “Branch3_Secret!” to R1 to be authenticated. Therefore we should check if R1 has already been configured with such username and password or not with the “show running-config” command on R1:

R1_show_run_username.jpg

On R1 we see the configured username is “Branch3”, not “Branch_3” so the usernames here are mismatched and this is the problem -> Answer A is correct.

Question 3

Explanation

In this question we have to check each option to see if it is correct. When we check Branch3 router we notice that “network 192.168.10.0” command is missing under “router eigrp 100” -> Answer D is correct.

Branch3_show_run_eigrp.jpg

Note: In the exam you should check other config as well. There are some reports saying that the answer of this question is different in the exam (answer A).

Question 4

Explanation

This question clearly stated there is a WAN connectivity issue between R1 and Branch1 so we should check both of them with the “show ip interface brief” command. On R1:

R1_show_ip_interface_brief.jpg

On Branch1:

Branch1_show_ip_interface_brief.jpg

We can see that although the Multilink1 interfaces are in “up/up” state but they are not in the same subnet. According to the IP address scheme shown on the topology we can deduce the Multilink interface on Branch1 has been misconfigured, it should be 192.168.14.2 instead.

Comments (42) Comments
Comment pages
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  1. me
    March 28th, 2018

    @all
    can anyone share this topology?

  2. Shay
    April 3rd, 2018

    why isn’t this sim on the front page of 9tut? is it no longer in the exam?
    same for IPv6 OSPF?

  3. 9tut
    April 4th, 2018

    @Shay: We have just posted this sim at the right-side menu. We are working on the IPv6 OSPF sim. Please wait for some time.

  4. Ali
    April 12th, 2018

    I got exam for this Labs

  5. Muhiz
    April 12th, 2018

    @9tut can you share this topology ???

  6. 9tut
    April 13th, 2018

    @Muhiz: The topology has been posted at the beginning of this page.

  7. Muhiz
    April 13th, 2018

    i cant see it. there is no link to download.

  8. 9tut
    April 13th, 2018

    @Muhiz: Maybe you mentioned about the Packet Tracer file of this sim. We are sorry but we don’t have it.

  9. salman shaikh
    April 15th, 2018

    kindly share or send me also all questions you have ( dcentpal at gmail dot com )
    or dumps also

  10. Muhiz
    April 16th, 2018

    @9tut yah i figured that out, anyway we cant do multilink configuration in packet tracer.

  11. sultan
    April 16th, 2018

    hi there
    hop you doing well
    can you give as adumb

  12. sultan
    April 16th, 2018

    hi there
    i hop you doing well
    can you give us adumb

  13. Vlonee
    April 16th, 2018

    9tut why dont you guys post the scenerio questions plus we can no longer download lab sims, why is that? We need to study the questions too.

  14. Farah
    April 22nd, 2018

    @9tut, isn’t the question 2 wrong? Because i just took the sim and on the interface that Branch3 and R1 are connected there are no CHAP username or password configured on R1. The explanation is showing an output with username configured on R1 interface connected to Branch3. Could someone check on that?

  15. Nelson
    April 30th, 2018

    @Farah Send me a link to your sim. Will take a look. BTW, it’s *hostname*, not username.

  16. Anonymous
    May 1st, 2018

    I need LAB

  17. Shakir
    May 3rd, 2018

    Hi, I am looking for a VCE EXAM SIMULATOR can any one provide me cracked version.

  18. ninou
    May 5th, 2018

    Passed yesterday

    in my exam the answer for the question 3 was not D, The Branch3 LAN network 192.168.10.0/24 was advertised . the answer was A in my exam. thy change all the time the answers, so be very carefull

  19. Vlonee
    May 8th, 2018

    ninou can you help me with latest dumps please ibrahim.ugbede at yahoodotcom

  20. TR
    May 10th, 2018

    Passed exam Monday
    53 questions
    EIGRP GRE, GRE multilink,RIPV2 ,DHCP , Access list 1, Access list 2, , OSPF
    drag and drop: QOS , BGP,
    some lab answers are not the same like here.

    Good luck

    iBGP BGP within a company
    eBGP BGP between companies
    Prefix is similar to subnet
    Private AS# 64512-65535
    Public AS# 1-64511

  21. lotfi
    May 10th, 2018

    i dont have exam

  22. Pig
    May 29th, 2018

    @9tut I think you post the note in the wrong place. This note’s for the EIGRP GRE lab not this lab.

  23. awab
    June 8th, 2018

    i can’t see the questions ..what should i do ?? i’m only see the answers

  24. jjj
    June 9th, 2018

    Did my CCNA today 9th June 2018, scored 936with cut off 810. I had the GRE multilink SIM, ACL SIM, VTP SIM , RIPv2 SIM and OSPF SIM. About 90% of the questions I encountered were from 9tut.com. Thanks @9tut.

  25. Abdul
    July 8th, 2018

    Hi guys,
    could you pls let know where is packet tracer file for this sim É
    is it to be done one GNS or Packet Tracer

    Also pls share the dumps at mylostresort AT gmai l. com

  26. Abdul
    July 9th, 2018

    Does anybody have its GNS3 lab for this lab.

    Also, i am need of ccna dumps … email: mylostresort AT gmai l. com

  27. usman
    July 20th, 2018

    where can i get packet tracer .pkt files of these labs. kindly help me out

  28. Utpal
    July 23rd, 2018

    Can anyone share the questions of GRE Multilink sim?

  29. Abou Razane
    July 28th, 2018

    I passed the exam last week, got 9xx thanks to 9tut.
    Some new questions about STP, QoS, Virtualisation…
    I have got Labs : GRE(other questions), ACL 2, RIPv2 and a lab about vlan and trunking troubleshooting.

  30. DK
    August 2nd, 2018

    Passed exam today, this lab was there. thanks 9tut

  31. Drin K
    August 19th, 2018

    i need this lab in packet tracer

  32. Irfan
    August 24th, 2018

    For question 3, There is an option “Tunnel keep alives are not configured in Branch2 and R2”. That is also correct ? So which one is the actual answer.

  33. Irfan
    August 24th, 2018

    All the 9tut sims including this one are at http[:][/][/]www[.]mediafire[.]com[/]file[/]axpatcaua5etfqt[/]Simulations[.]zip . This sim is in GNS3 not packet tracer.

    Use Packet tracer 7.2 and GNS3 2.1.9

  34. CptSky
    September 5th, 2018

    @Irfan You are right, there are no keepalives configured on Tu0 interfaces of R2 and Branch2. That’s confusing.

  35. Erik
    September 12th, 2018

    @CptSky
    There’s no pkt file for this Sim is uploaded here. How can you know keepalives config on Tu0 int of R2 and Branch2?

  36. Anonymous
    September 17th, 2018

    Passed my exams today! Got DHCP, two EIGRP, ACL, Multilink PPP,

  37. no hope
    September 18th, 2018

    i downloaded the SIM in GNS3 but cannot open it !!!
    can any one share this in PKT format??
    Thanks!!

  38. no hope
    September 19th, 2018

    i downloaded the SIM in GNS3 but cannot open it !!!

    can any one share this in Packet tracer format??

    Thanks!!

  39. no hope
    September 19th, 2018

    OR

    any one can share how to use the SIM in GNS3, thanks in advance!!

  40. no hope
    September 20th, 2018

    can any one share this in Packet tracer format??

    OR
    any one can share how to use the SIM in GNS3, thanks in advance!!

  41. Anonymous
    September 27th, 2018

    27/09/2018 this exact question was on the exam… THANKS 9tut

  42. CCNA
    October 12th, 2018

    This is still on the exam but there were some modifications done. Answers were different from here and can’t answer one question there as all choices are correct.

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