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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

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 (36) Comments
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  1. Anonymous
    November 21st, 2017

    can u please send mo mfb8i @ f5 . si
    no space on my email thanks

  2. uc
    November 22nd, 2017

    PASSED CCNA LAST WEEK. THANKS 9TUT. YOUR QUESTIONS AND ANSWERS WERE VALID.
    ( ngafsdre at gmail dot com)

  3. brospoy30@gmail.com
    November 23rd, 2017

    @William, Do you have Chinese new Dump 2017.10.10? Please kindly send to me: brospoy30 *@ *gmail . *com

  4. George
    November 28th, 2017

    Hello can someone send me the latest dump . georgy . mattar @ gmail . com @william @uc

  5. jcause
    December 2nd, 2017

    what are the questions to this one?

  6. Rizwan
    December 3rd, 2017

    I got this Sim yesterday Exam but in running Config there was no username and password for Chap authectication and without this it was difficult to answer this question

  7. Tom
    December 4th, 2017

    Hey Rizwan…Which labs did you get?

  8. Lis
    December 5th, 2017

    @Rizwan,
    What was this lab like? Was it multiply choice? Config? Thanks

  9. jako
    December 5th, 2017

    where is the question ??

  10. lipouki
    December 6th, 2017

    please can someone send me the latest dumps… {email not allowed}

  11. Jini@11
    December 13th, 2017

    Where is questions relate to this lap i cant understand the idea only answers
    can any one explain?????

  12. rohit
    December 20th, 2017

    can we pass ccna only based on 9tut mcq and lab sims ??thanks

  13. rohit
    December 20th, 2017

    i saw demo on cisco website showing 7 types questions like fill in the blanks and testlet questions……..which are not present on 9tut

  14. rohit
    December 20th, 2017

    please somebody guide me.thanks

  15. Sarwar
    December 22nd, 2017

    Can i have packet tracer sim for this lab?

  16. Serhiy
    January 2nd, 2018

    where is the question ??
    You shuld to be registred

  17. Said
    January 4th, 2018

    Hello friends. Anyone have latest CCNA dumps please provide.
    My mail is beyzik (@) mail . ru. Please help. Thank you in advance

  18. WTF?
    January 5th, 2018

    For RIPv2 only Q&A not practice lab ?

  19. WTF?
    January 6th, 2018

    Question 1
    Why is the Branch2 network 10.10.20.0/24 unable to communicate with the Server farm 1 network 10.10.10.0/24 over the GRE tunnel?
    A. The GRE tunnel destination is not configured on the R2 router. B. The GRE tunnel destination is not configured on the Branch2 router. C. The static route points to the tunnel0 interface that is misconfigured on the Branch2 router. D. The static route points to the tunnel0 interface that is misconfigured on the R2 router.
    Answer: C
    Question 2
    Why has the Branch3 router lost connectivity with R1? Use only show commands to troubleshoot because usage of the debug command is restricted on the Branch3 and R1 routers?
    A. A PPP chap hostname mismatch is noticed between Branch3 and R1. B. A PPP chap password mismatch is noticed between Branch3 and R1. C. PPP encapsulation is not configured on Branch3. D. The PPP chap hostname and PPP chap password commands are missing on the Branch3 router.
    Answer: A
    Question 3
    Which statement about the router configurations is correct?
    A. PPP PAP is authentication configured between Branch2 and R1. B. Tunnel keepalives are not configured for the tunnel0 interface on Branch2 and R2. C. The Branch2 LAN network 192.168.11.0/24 is not advertised into the EIGRP network. D. The Branch3 LAN network 192.168.10.0/24 is not advertised into the EIGRP network. E. PPP CHAP is authentication configured between Branch1 and R1.
    Answer: D
    Question 4
    Why did Branch1 router lose WAN connectivity with R1 router?
    A. The IP address is misconfigured on PPP multilink interface on the Branch1 router. B. The PPP multilink group is misconfigured on the Branch1 serial interfaces. C. The PPP multilink group is misconfigured on the R1 serial interfaces. D. The Branch1 serial interfaces are placed in a shutdown condition.
    Answer: A

  20. ror
    January 7th, 2018

    please can someone send my last valid dump for my ccna exam. please help me guys i need to pass the examm.
    thanks

  21. ror
    January 7th, 2018

    my email is roybousaba at hotmail dotcom

  22. jaber
    January 18th, 2018

    Hi how are you every onr

  23. Anonymous
    January 18th, 2018

    Last ccna exam 200-125 for free please subscribe the channel
    #"fixed">

  24. cisc0M
    January 18th, 2018

    GRE MULTILINK all 5 questions changed in 15 2018… But easy Q&A

  25. zert
    January 18th, 2018

    @cisc0M what was changed in the GRE multilink that appeared in your exam?

  26. cisc0M
    January 20th, 2018

    all from GRE the topology changed also but easy to answer

  27. aldin
    January 21st, 2018

    hello can you send me new dumps my emil is aldin1512 (@) gmail (.) com

  28. MMM
    January 21st, 2018

    @cisc0M
    Do you recall the GRE questions also do you recall if the diagram changed
    Did they ask any q in ppp authentication too

  29. @9tut
    January 29th, 2018

    Help Guys
    I have the exam next 31/2018. So some body have the new questions about this sim ? I need the vlan Sim too.

  30. @alexnader
    January 29th, 2018

    Help Guys
    I have the exam next 31/2018. So some body have the new questions about this sim ? I need the vlan Sim too.

  31. Anonymous
    February 4th, 2018

    hello guys, where can i get this lab, please share latest dumps, writing next week, email, sistustedong at gmail dot com

  32. ice
    February 14th, 2018

    @All can some one tell me or give me a link of the other questions and answers for this simthe . (ACL blocking) ? thank u.

  33. mr nick
    February 14th, 2018

    what acl blocking questions ?
    thank you

  34. @ANONYMOUS-
    February 15th, 2018

    got this type of question with slight modifications such as out of 4 sub questions under this section . first question answer was that the source address on branch 2 router was not advertised in rip version 2. second question answer was ripv2 was not enabled on one of the interfaces . in third question it was that access list was blocking a route to advertise its interface. last one was tunnel route was not defined properly.

  35. CCNAnoob
    February 18th, 2018

    Hi all, I don’t understand why in Q3, the “Branch3” should have to advertise 192.168.10.0 in EIGRP to establish adjacency with R1. Isn’t 192.168.16.0 enough? .10 network is not relevant to R1 in forming relationship with Branch3. Can anyone help?

  36. @ccna
    February 19th, 2018

    @CCNAnoob

    it is required because all connected interface when it comes in routing ,you must declare it . It has use because .10 is for host, you must declare this in eigrp to established and get your host connected in the network.

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