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RIPv2 Troubleshooting Sim

October 16th, 2016 Go to comments

Refer to the topology below and answer the questions using “show” commands.

Topology.jpg

Question 1

Server1 and Server2 are unable to communicate with the rest of the network. Your initial check with system administrators shows that IP address settings are correctly configured on the server side. What could be an issue?

A. The VLAN encapsulation is misconfigured on the router subinterfaces.
B. The Router is missing subinterface configuration.
C. The Trunk is not configured on the L2SW1 switch.
D. The IP address is misconfigured on the primary router interface.

 

Answer: A

Explanation

Check the configuration of the interface that is connected to Server1 and Server2 on R2 with “show running-config” command.

R2_show_run.jpg

We see that subinterface E0/1.100 has been configured with VLAN 200 (via “encapsulation dot1Q 200” command) while Server1 belongs to VLAN 100. Therefore this configuration is not correct. It should be “encapsulation dot1Q 100” instead. The same thing for interface E0/1.200, it should be “encapsulation dot1Q 200” instead.

Question 2

Users in the main office complain that they are unable to reach internet sites. You observe that internet traffic that is destined towards ISP router is not forwarded correctly on Router R1. What could be an issue?

Ping to Internet server shows the following results from R1:

R1#ping 209.165.200.225
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 209.165.200.225, timeout is 2 seconds:
…..
Success rate is 0 percent (0/5)

A. The next hop router address for the default route is incorrectly configured.
B. Default route pointing to ISP router is not configured on Router R1.
C. Default route pointing to ISP router is configured with AD of 225.
D. Router R1 configured as DHCP client is not receiving default route via DHCP from ISP router.

 

Answer: B

Explanation

When all the users cannot reach internet sites we should check on the router connecting to the ISP to see if it has a default route pointing to the ISP or not. Use the “show ip route” command on R1:

R1_show_ip_route.jpg

We cannot find a default route on R1 (something like this: S* 0.0.0.0/0 [1/0] via 209.165.201.2) so maybe R1 was not configured with a default route. We can check with the “show running-config” on R1:

R1_show_run_static_routes.jpg

We need a default route (like “ip route 0.0.0.0 0.0.0.0 209.165.201.2”) but we cannot find here so we can conclude R1 was not be configured with a default route pointing to the ISP router.

Question 3

Examine R2 configuration, the traffic that is destined to R3 LAN network sourced from Router R2 is forwarded to R1 instead R3. What could be an issue?

R2#traceroute 10.10.12.1 source 10.10.10.1
Type escape sequence to abort.
Tracing the route to 10.10.12.1
VRF info: (vrf in name/id, vrf out name/id)
1 172.16.14.1 0 msec 1 msec 0 msec
2 172.16.14.1 !H !H *

R2#

A. RIPv2 enabled on R3, but R3 LAN network that is not advertised into RIPv2 domain.
B. RIPv2 routing updates are suppressed between R2 and R3 using passive interface feature.
C. RIPv2 not enabled on R3.
D. No issue that is identified; this behavior is normal since default route propagated into RIPv2 domain by Router R1.

 

Answer: C

Explanation

First we should check the routing table of R2 with the “show ip route” command.

R2_show_ip_route.jpg

In this table we cannot find the subnet “10.10.12.0/24” (R3 LAN network) so R2 will use the default route advertised from R1 (with the command “default-information originate” on R1) to reach unknown destination, in this case subnet 10.10.12.0/24 -> R2 will send traffic to 10.10.12.0/24 to R1.

Next we need to find out why R3 did not advertise this subnet to R2. A quick check with the “show running-config” on R3 we will see that R3 was not configured with RIP ( no “router rip” section). Therefore we can conclude RIPv2 was not enabled on R3.

Question 4

What is the correct statement below after examining the R1 routing table?

A. Traffic that is destined to 10.10.10.0/24 from R1 LAN network uses static route instead RIPv2 because the static route AD that is configured is less than the AD of RIPv2
B. Traffic that is destined to 10.10.10.0/24 from R1 LAN network uses RIPv2 instead of static route because the static route AD that is configured is higher than the AD of RIPv2
C. Traffic that is destined to 10.10.10.0/24 from R1 LAN network uses static route instead of RIPv2 but the traffic is forwarded to the ISP instead of the internal network
D. Traffic that is destined to 10.10.10.0/24 from R1 LAN network uses RIPv2 instead of static route because the static route AD that is configured is 255

 

Answer: B

Explanation

Surely we have to use the “show ip route” command to check the R1 routing table.

R1_show_ip_route_compare.jpg

As we see here, 10.10.10/24 is learned from RIP. Notice that although there is a static route on R1 to this destination (you can check with the “show running-config” on R1 to see the line “ip route 10.10.10.0 255.255.255.0 172.16.14.2 200”), this static route is not installed to the routing table because it is not the best path because the Administrative Distance (AD) of this static route is 200 while the AD of RIP is 120 -> R1 chose the path with lowest AD so it chose path advertised via RIP.

Comments (44) Comments
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  1. umer
    May 7th, 2018

    Pass my CCNA Exam this sim was in exam but questions are bit different

  2. Ankur
    May 7th, 2018

    How come is que 4’s answer is B? and how come in the explanation it say Static route have greater AD than RIP??? Static route has AD of 1 right?? so why it says 200??

  3. Ankur
    May 7th, 2018

    @Umer the sims here are good enough for the exam???

  4. umer
    May 8th, 2018

    @Ankur Sim is good. I got the same in the exam. I will suggest to understand the logic not memorizing.
    for example ping is not working why is not working?
    Ping is working why is working?

  5. botocador
    May 10th, 2018

    @Ankur, the answer is in the sh run command
    when the static route was entered, they add the number 200 at the end which means the AD is set to 200. 200 is not part of the IP address

  6. Ankur
    May 11th, 2018

    @botocador, oh sorry my bad, i just saw the run config again, thanks a lot mate, are u planning to take exam? or you already done with it? Is there some other suggestions for the exam ? i am taking it on monday.

  7. Ankur
    May 11th, 2018

    @umer Thanks Umer

  8. Niggarachi
    May 16th, 2018

    Is there a premium version for CCENT/ICND1 ?

  9. Sinix
    May 28th, 2018

    Fellas, I can´t find the file sim to practice, could someone point it out, pls? There is no hint to its location. It´s not in F.A.Q. list.

  10. Anonymous
    May 29th, 2018

    how many labs are coming exam.

  11. Abdisalan
    May 29th, 2018

    Normally what types of labs exam consist?

  12. Luis
    June 2nd, 2018

    I had my exame today and I fail but this one was there.

  13. Lily
    June 3rd, 2018

    @Luis, Was it exactly like this or there were some changes?

    Im scared mine is on friday

  14. Anonymous
    June 8th, 2018

    jjggf buuu

  15. Ngo Ngoc Luu
    June 15th, 2018

    Hi everyone,

    Please share the latest dump 200-125, my mail ngongocluuuct@ gmail com

    Thanks

  16. Sinix
    June 19th, 2018

    Guys, there is no way to input “show” command, there is no file sim, or other material source? How can I consult the devices??

  17. Taraq
    July 6th, 2018

    please help me by sending latest dumps.my exam is in this month.my email id is:
    myselftaraq @ gmail . com

  18. Assyatir
    July 10th, 2018

    hi please send me latest dumb to imdarassyatir1atgmaildotcom

  19. ahmed
    July 20th, 2018

    Sinix, yep same here. I could not find a packet tracer files for this sim. only some other ripv2 sim.

    oh well, just study this sim, and remember to use show run and show ip route commands in real exam.

  20. ahmed
    July 20th, 2018

    we have to be prepared for ugly questions about auto-summary in the exam. e.g. you might get asked – networks are subnetted, but in router config, why do the subnetted routes show as:

    192.168.10.0
    10.10.10.0

    and question will want you to disable auto-summary.

  21. @Domo
    July 22nd, 2018

    could someone plz share the dumps to me . I am going to take exam this Friday .kindly pass on to my email domagoj . ursa @ outlook . com

  22. Anonymous
    July 30th, 2018

    Got this exam today exactly the same

  23. Jaime
    August 3rd, 2018

    I had exam today i had this exact one also

  24. Reka
    August 8th, 2018

    Can someone please share the dump to me, my email is {email not allowed}

  25. NAN
    August 9th, 2018

    http: // t.cn/RDf8DJW
    Share a useful link, the content inside is true and effective.

  26. PETER
    August 11th, 2018

    Hy there. are all exam questions Multi choice or what??

  27. zamochit
    August 12th, 2018

    Peter,

    there are the QCM , one answer or multiple answers.
    The sims (where you should config a little, like the vlan LAB and OSPFV3 for exemple)
    And other scenarios where you should check the config and chose the best answer , without modify the config.

    When you modify the config remember to use copy running-config startup-config at the end, just to be sure. i have my exam tomorrow.
    Good luck

  28. nomas
    August 18th, 2018

    Passed my exam today and this lab was there.

  29. Johnattan97
    August 20th, 2018

    According to the answer for question 3, R1 advertises a default route to R2 through RIP, however, R1 has no default route configured, Is this correct?

  30. Yousif
    August 29th, 2018

    Hi , Can someone send me the CCNA dump please .E mai l >> Mohammedmoneer1988 {at} Yahoo {dot} com

    Thanks regards

  31. Sulkab
    September 6th, 2018

    @9tut: Hi guys, is there a packet tracer file for this SIM that we can use to practice? Thanks.

  32. Sari
    September 8th, 2018

    hi, can someone provide .pkt files for this and ospf neighbor Sim as well???, Thanks

  33. Alex
    September 20th, 2018

    Can some1 explain to me is there on the test any configuring of devices or just using sh commands to get an answer on questions?
    Thnx

  34. Anonymous
    September 27th, 2018

    Did this exam today and this lab was there…. thanks 9tut

  35. bander
    September 28th, 2018

    please share me the latest dump for 200-125

  36. suyog
    October 2nd, 2018

    how to download lab simulation from this site

  37. Abdullah Alqaisy
    October 8th, 2018

    Can anyone help me to get the last DUMP urgently, my Email is:
    {email not allowed}

  38. Abdullah Alqaisy
    October 8th, 2018

    Can anyone help me to get the last DUMP urgently, my Email is:
    abdullahalqaisy84 at Gmail dot com

  39. Sharjeel
    October 19th, 2018

    I want to practice more of these RIPV2 simulator questions.How can i do that? Are there anymore? I find only this one.

  40. Denis
    October 24th, 2018

    For all asking for valid dumps and sim labs use ccnav6.com

  41. hashi
    October 31st, 2018

    hey Denis valid dumps is not enough to pass the exam you need to practice sims too its more points than the multiple choices I felt my first exam because of sims I wanna retake trust me if you all practice what’s in 9tut you good to go..

  42. pedro
    November 3rd, 2018

    hi guys, i`m gonna do the exam in afew weeks, could someone send to me the labs p h . t r i n c a @ g m a i l . c o m

  43. Trumpenstein
    November 10th, 2018

    Q2. Besides the missing static route to the ISP there is no “ip nat outside” and no access-list LOCAL configured.

  44. Deus
    November 28th, 2018

    At Pedro when are you doing your exam?

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