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IPv6 OSPF Virtual Link Sim

May 8th, 2014 in Lab Sim, LabSim Go to comments

Question

TUT is a small company that has an existing enterprise network that is running IPv6 OSPFv3. However, R4’s loopback address (FEC0:4:4) cannot be seen in R1. Identify and fix this fault, do not change the current area assignments. Your task is complete when R4’s loopback address (FEC0:4:4) can be seen in the routing table of R1.

OSPFv3_IPv6_VirtualLink

Special Note: To gain the maximum number of points you must remove all incorrect or unneeded configuration statements related to this issue.

Answer and Explanation:

To troubleshoot the problem, first issue the show running-config on all of 4 routers. Pay more attention to the outputs of routers R2 and R3

The output of the “show running-config” command of R2:

OSPFIPv6v3VirtualLink_show_run_R2

The output of the “show running-config” command of R3:

OSPFIPv6v3VirtualLink_show_run_R3

We knew that all areas in an Open Shortest Path First (OSPF) autonomous system must be physically connected to the backbone area (Area 0). In some cases, where this is not possible,we can use a virtual link to connect to the backbone through a non-backbone area. The area through which you configure the virtual link is known as a transit area. In this case, the area 11 will become the transit area. Therefore, routers R2 and R3 must be configured with the area area-id virtual-link neighbor-router-id command.

+ Configure virtual link on R2 (from the first output above, we learned that the OSPF process ID of R2 is 1):

R2>enable
R2#configure terminal
R2(config)#ipv6 router ospf 1
R2(config-rtr)#area 11 virtual-link 3.3.3.3

(Notice that we have to use neighbor router-id 3.3.3.3, not R2’s router-id 2.2.2.2)

+ Configure virtual link on R3 (from the second output above, we learned that the OSPF process ID of R3 is 1 and we have to disable the wrong configuration of “area 54 virtual-link 4.4.4.4”):

R3>enable
R3#configure terminal
R3(config)#ipv6 router ospf 1
R3(config-rtr)#no area 54 virtual-link 4.4.4.4
R3(config-rtr)#area 11 virtual-link 2.2.2.2

We should check the configuration on R4:

R4>enable
R4#show running-config

You will see a wrongly configured virtual-link command. To get full mark we have to disable this command:

R4#configure terminal
R4(config)#ipv6 router ospf 1
R4(config-rtr)#no area 54 virtual-link 3.3.3.3

After finishing the configuration don’t forget to ping between R1 and R4 to make sure they work well!

Now all the configuration was done. It is weird that we can’t ping the IPv6 loopback interface of R4 (with the ping or ping ipv6 command) but we can check by using the command show ipv6 route on R1

The copying running-config startup-config command will not work but don’t worry, just skip it.

Notice: If you issue the command “show running-config” on R1, you will see these two lines:

passive-interface default
no passive-interface fa0/0 (fa0/0 is the interface connecting with R2)

These two lines make all the interfaces of R1 become passive interfaces except interface fa0/0. They are correctly configured so don’t try to disable them.

 

Other lab-sims on this site:

EIGRP Stub Sim

OSPF Sim

EIGRP OSPF Redistribution Sim

EIGRP Simlet
Policy Based Routing Sim

Comments
Comment pages
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  1. Chad Philippines
    July 28th, 2016

    you can ping the from R1 to R4 or vise versa just put only “R1=ipv6 ospf 1 area 0” and “R4=ipv6 ospf 1 area 54”
    in the interface of loopback0

  2. Z
    August 2nd, 2016

    Passed today 149Q still valid

  3. melly
    August 5th, 2016

    thanks loads @ Chad Philippines u jst rescued me nw..God bless

  4. Mark
    August 7th, 2016

    Hello! and at the end this command “(config-rtr)#no area 54 virtual-link 3.3.3.3”
    shall NOT be used?

  5. Mark
    August 7th, 2016

    I did this on my GNS#
    After loading command into R2:
    R2(config-rtr)#area 11 virtual-link 3.3.3.3

    on R3 starts to pop-up these:
    “Received invalid packet: mismatch area ID, from backbone area must be
    virtual-link but not found from FEC0:2::2, Serial0/0”
    and I cannot configure anything on R3,that just disturb any command to be written.
    How to stop that flooding?

  6. Mark
    August 7th, 2016

    At my gns3 first I have configured ,first I have added areas on R2 and R3,tand ping doesnt work.
    Than I ahve configured all the loopback and ping worked.if I would configure loopbacks into areas than I would get message flooding from R3 which would stop me to configure further.

  7. Mark
    August 7th, 2016

    I suppose that on real exam all the loopbacks are pre-configured! Isnt it?

  8. Ray
    August 11th, 2016

    @digitaltut: Please include this last step in the instructions for GNS3 lab to avoid confusion for other folks. Thanks!

    “R1=ipv6 ospf 1 area 0” and “R4=ipv6 ospf 1 area 54” in the interface of loopback0

  9. Anonymous
    August 11th, 2016

    I agree we should configure R1>interface f0/0>ipv6 ospf 1 area 0
    And
    …………………………………R4>interface x/x>ipv6 ospf 1 area 54

  10. Anonymous
    August 11th, 2016

    sorry not interface f0/0 – its the loopback x for both R1 and R4 ….

    the question clearly mentions “and you can ping from R1 to R4 loopback address” – it means R4’s Loopback has to be advertised, but just to be on the safe side, advertise R1’s loopback too

  11. hadi
    August 12th, 2016

    who can send scenario for me
    i cant find
    thankyou
    my email {email not allowed}

  12. hadi
    August 12th, 2016

    my email hadi1374sh gmail.com

  13. Maryellen
    August 15th, 2016

    It’s wonudrfel to have you on our side, haha!

  14. Bette
    August 15th, 2016

    Yeah that’s what I’m talking about bai-cynb-e work!

  15. neo3
    August 16th, 2016

    just passed ccnp route. dumps are still valid

  16. sheeeee
    August 17th, 2016

    Hi Passed today!!
    149q dump is still valid. I did not encounter new questions.
    In PBR next hop is .2 not .1, so be careful
    write mem and copy run start is not working

  17. Joker
    August 23rd, 2016

    @Sheeeee
    Hi ,you have totally 5 Simulations or 4 simulations in real exam?
    Everyone told they got –1. PBR 2. EIGRP ospf redistribution labs
    –3. OSPF 4. EIGRP sim so
    let me know real that 4 or 5 Simulations in Exam.My exam is coming Tuesday so tell me truth.
    thanks

  18. Hasnu
    August 27th, 2016

    149q still valid. Passed with 923 marks..!
    Exam Date: 26-08-2016
    Labs: PBR and OSPF-EIGRP Redistribution (2 labs)
    Evaluation: EIGRP and OSPF (2 Evaluations)
    Drag and Drop: CED, BGP and IPv6 NPTv6

    Guys the commands, “copy run start”, “write mem” are not allowed, so don’t worry just complete what is asked and do verify the way it is asked to.

    Thanks digitaltut (Y)

  19. Dwarbit
    August 28th, 2016

    Without the ospf statements on the loopbacks of router 1 and 4, the loopback address is not visible in router 1. I found clarification from Cisco on this. Link is here: http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/113204-ospfv3-vlink-config.html.

  20. Anonymous
    September 3rd, 2016

    I dont agree with this solution
    Virtual-Link should be configured for each Transit Area until BackBone Area,
    Today I solved this exercise in GNS3
    If I delete the next lines

    In R3
    “no area 54 virtual-link 4.4.4.4”

    In R4
    “no area 54 virtual-link 3.3.3.3”

    After I added the next lines

    In R3
    “area 11 virtual-link 2.2.2.2”

    In R2
    “area 11 virtual-link 3.3.3.3”

    With those commands I dont see the network FEC0:4::4 in R1

    My solution was Add again the lines in R3 and R4 with those lines I see the network FEC0:4::4 in R1 but I dont see FEC0:1::1 in R4 so I review again the configuration in R1 and I found that Loopback1 Interface is not added in OSPF area 0, I add this interface and I can see the network FEC=:1::1 in R4.

    Right Solution

    R1
    interface Loopback0
    ipv6 ospf 1 area 0

    R2
    ipv6 router ospf 1
    area 11 virtual-link 3.3.3.3

    R3
    ipv6 router ospf 1
    area 11 virtual-link 2.2.2.2
    area 54 virtual-link 4.4.4.4

    R4
    ipv6 router ospf 1
    area 54 virtual-link 3.3.3.3

    Ping Successfull

    R1#ping FEC0:4::4 source fa0/0

    Type escape sequence to abort.
    Sending 5, 100-byte ICMP Echos to FEC0:4::4, timeout is 2 seconds:
    Packet sent with a source address of FEC0:1::1
    !!!!!
    Success rate is 100 percent (5/5), round-trip min/avg/max = 20/40/68 ms
    R1#

    R4#ping FEC0:1::1 source fa0/0

    Type escape sequence to abort.
    Sending 5, 100-byte ICMP Echos to FEC0:1::1, timeout is 2 seconds:
    Packet sent with a source address of FEC0:4::4
    !!!!!
    Success rate is 100 percent (5/5), round-trip min/avg/max = 24/52/128 ms
    R4#

    My english is bad but I hope that you understand me

  21. someone
    September 3rd, 2016

    I don’t think we should think about ping here.
    if you read carefully you can see this line
    “do not change the current area assignments. Your task is complete when R4’s loopback address (FEC0:4:4) can be seen in the routing table of R1.”

  22. someoneelse
    September 5th, 2016

    I’ve tried all of the options someone suggested, but still unable to see the (FEC0:4::4) in the routing table of R1
    I’ve also tried it with virtual-link in area 54 in and with it out, but still unable to see anything in the routing table of R1
    I’ve also checked the example they have at the cisco.com website:
    http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/113204-ospfv3-vlink-config.html
    which is the same lab, but still unable to see anything in the routing table of R1.
    can you “digitaltut” or anyone else share your config so I can compare and see why my configs not working.
    Thanks alot for your help in advance…

  23. someoneelse
    September 5th, 2016

    I want to add that I can ping from R1->R4 and vice versa to the ipv6 addresses.

  24. ASM
    September 6th, 2016

    If you need any help in IPV6 OSPF (v3) configuration ; please visit this link , http://www.asmed.com/cisco-ccna-ospf-ipv6-configuration/ With Video and PDF of the configuration files.

  25. cahh
    September 7th, 2016

    Hi Guys,

    Can anybody share the 149q dumps?
    cristian.huenuqueo at hotmail dot com
    Thanks in advance

  26. jules
    September 9th, 2016

    where can i download the simulator for this lab?

  27. Anonymous
    September 17th, 2016

    hy to every one!!

    need ipv6 ospf virtual link in gns formate.thanks in advance

    ahmadaslam608 at gmail dot com

  28. CAN-TOR
    September 26th, 2016

    Hi I dont see those two lines in R1 show run

    passive-interface default
    no passive-interface fa0/0 (fa0/0 is the interface connecting with R2)

    anyone has any explanation ?

  29. abid
    September 27th, 2016

    can any one send me ipv6 ospf lab in gns.
    shaikabidahamed at gmail dot com

  30. faz
    October 2nd, 2016

    hey guys what labs are on the routing exam exactly to configure I heard 2 labs but don’t know which ones here on 9tut because theres some old ones that are on here still form old exam ccnp exam. Thanks.

  31. George
    October 5th, 2016

    apparently I read so many comments that confirmed that the dump 149q are not valid anymore. thanks

  32. Habib Ullah
    October 13th, 2016

    Please confirm if the 149q are still valid…or please send me the new dumps… wazirhabibullah @ yahoo.com

  33. Anonymous
    October 15th, 2016

    Please help so I can continue my CCNP Certification Send to {email not allowed}

    Thank you.

  34. Anonymous
    October 15th, 2016

    Please help so I can continue my CCNP Certification Send to {email not allowed}

    Send the valid dump for October 2016 Exam.

    Route 300-101

    Thank you.

  35. Anonymous
    October 15th, 2016

    Please help so I can continue my CCNP Certification Send to rhedreyes2012 @ gmail.com

    Send the valid dump for October 2016 Exam.

    Route 300-101

    Thank you.

  36. CCNPtomorrow
    October 25th, 2016

    You also need to run the command ipv6 enable on each interface. in addition, check to see if the routers R1 and R2 have retained their router IDs. These actions will allow the routers to start sending adverts across the virtual link.

  37. MK
    October 30th, 2016

    @OR please check the link & verify

  38. Akpofure
    November 17th, 2016

    I have passed the Route exam using the ebay link mentioned below. Contained all the new questions from the recent update. There’s a totaol of 206 with the new update (149 + 57). Many thanks to allah and this helpful community.

    The following is information to the Exam:

    44 Questions (This includes Multiple Choice,Drag and Drop, and Simlets)
    EIGRP Stub Simulation
    Redistribution Simulation
    IPv6 OSPF Simulation

    Information here is good as well, as mentioned by others. But here is the ebay link if you want to use the materials:

    http://www.ebay.com/itm/322309862094?

    Good Luck to you all. Many Blessings

  39. Anonymous
    November 22nd, 2016

    Only 1 virtual link needed thru area 11 between R3 and R2, and loopbacks must be enabled for ospf.

    R4 – loopback config
    interface Loopback0
    no ip address
    ipv6 address FEC0:4::4/64
    ipv6 ospf 1 area 54
    !

    Virtual link config (started with R3)

    R3(config-rtr)#area 11 virtual-link 2.2.2.2
    R3(config-rtr)#

    *Nov 22 14:15:56.717: %OSPFv3-5-ADJCHG: Process 1, Nbr 2.2.2.2 on OSPFv3_VL0 from LOADING to FULL, Loading Done

    Next on R2

    R2(config-rtr)#
    *Nov 22 14:15:53.872: %OSPFv3-4-ERRRCV: OSPFv3-1-IPv6 Received invalid packet: Received packet with global address. Must be virtual-link, but not found from FEC0:3::3, Ethernet0/1

    R2(config-rtr)#area 11 virtual-link 3.3.3.3
    R2(config-rtr)#
    *Nov 22 14:15:56.717: %OSPFv3-5-ADJCHG: Process 1, Nbr 3.3.3.3 on OSPFv3_VL0 from LOADING to FULL, Loading Done

    Checking on R1

    R1#show ipv6 route
    IPv6 Routing Table – default – 6 entries
    Codes: C – Connected, L – Local, S – Static, U – Per-user Static route
    B – BGP, HA – Home Agent, MR – Mobile Router, R – RIP
    H – NHRP, I1 – ISIS L1, I2 – ISIS L2, IA – ISIS interarea
    IS – ISIS summary, D – EIGRP, EX – EIGRP external, NM – NEMO
    ND – ND Default, NDp – ND Prefix, DCE – Destination, NDr – Redirect
    O – OSPF Intra, OI – OSPF Inter, OE1 – OSPF ext 1, OE2 – OSPF ext 2
    ON1 – OSPF NSSA ext 1, ON2 – OSPF NSSA ext 2, ls – LISP site
    ld – LISP dyn-EID, a – Application
    C FEC0:1::/64 [0/0]
    via Loopback0, directly connected
    L FEC0:1::1/128 [0/0]
    via Loopback0, receive
    OI FEC0:2::2/128 [110/10]
    via FE80::2, Ethernet0/0
    OI FEC0:3::3/128 [110/20]
    via FE80::2, Ethernet0/0
    OI FEC0:4::4/128 [110/30]
    via FE80::2, Ethernet0/0
    L FF00::/8 [0/0]
    via Null0, receive
    R1#ping FEC0:4::4
    Type escape sequence to abort.
    Sending 5, 100-byte ICMP Echos to FEC0:4::4, timeout is 2 seconds:
    !!!!!
    Success rate is 100 percent (5/5), round-trip min/avg/max = 4/4/5 ms
    R1#

  40. Anonymous
    November 22nd, 2016

    ^^ If you’re having trouble pay attention to this. I’m willing to bet you forgot to advertise your loopbacks.

  41. Anonymous
    November 24th, 2016

    On the exam ping only works for IPv4 addresses, and hostnames, no ping allowed for IPv6 addresses.
    But question says: “Your task is complete when R4’s loopback address (FEC0:4:4) can be seen in the routing table of R1.”
    And it can be seen :)

  42. Anonymous
    November 28th, 2016

    I noticed in the exam I just failed that they say to ping R4’s loopback address (FEC0:4:4). Clearly Cisco forgot an extra colon and the real IP is FEC0:4::4.

  43. Muhammad Afzal
    November 30th, 2016

    Hi, All,

    Passed yesterday, 149+40 Still valid, thanks to Tagwa.this lab came in exam exactly as it is.
    i See OI FEC0:4::4/128 [110/30] in R1.
    just i do the following.

    R4#configure terminal
    R4(config)#ipv6 router ospf 1
    R4(config-rtr)#no area 54 virtual-link 3.3.3.3

    m _ afzal345 @ yahoo.com

  44. padro
    December 3rd, 2016

    can someone provide a full initial configuration please

  45. Anonymous
    December 5th, 2016

    Can someone explain why we need to remove area 54 virtual-link 3.3.3.3 from R4?

  46. NK2
    December 7th, 2016

    Hi Guys, i need your help plz.. If I do the following with R4 then i can not see the FEC0:4::4 in R1. But if i dont do it, it is shown in R1. further, i really can not ping the FEC0:4::4 from R1, either it is shown their or not. So please tell me, where i am doing the mistake ???

    R4#configure terminal
    R4(config)#ipv6 router ospf 1
    R4(config-rtr)#no area 54 virtual-link 3.3.3.3

  47. John Doe
    December 7th, 2016

    Passed today – still valid

  48. AMS
    December 7th, 2016

    John, can you plz confirm which dumps are still valid ? i have exam on 10th Dec

  49. kasunr
    December 8th, 2016

    @NK2.
    The reason why it disappears from the routing table is cause the Loopback 0 address is not advertised in IPV6. It works if you do that.

  50. NK2
    December 11th, 2016

    Thanks a lot Kasunr…I have one more question. Do we have to do this configuration{ “R1=ipv6 ospf 1 area 0” and “R4=ipv6 ospf 1 area 54” in the interface of loopback0} in real exam in case, we dont have the ospf on loopbacks of R1 &R4? It will be really helpful to ping R1 from R4 and vice versa.. In case if it is configured b4, offcourse there is no need..Any one please comment ????

  51. chekov
    December 13th, 2016

    fec0:4:44 can’t be seen on router 1. loopbacks are advertised. all other steps are also done. anyone has an idea?

  52. Salman
    December 15th, 2016

    Hi all Kindly send me the latest dumps of CCNP Route i have to give paper in next week, Thanks
    email add is “salman underscore saeed 1992 at yahoo dot com”

  53. Anonymous
    December 21st, 2016

    Dear Friends,
    I’m trying to set up GNS3 lab for my CCNP Route exam, but I don’t have Cisco IOS images. I tried to find on the web but no success. If someone could please send me Cisco IOS images for commonly used routers(2600, 3600, 3700, 7200). My email is mnasir.sher @ gmail dot com
    Really appreciate your help.

  54. GHK
    December 29th, 2016

    We need only one virtual link in area 11, therefore remove area 54 virtual-link on R3 and R4 and make the link between R2 AND R3
    in order to see the IP of R4 on the R, advertise loopback 0 addresses.
    apply this commands on all routers

    for E.g.
    On R1
    interface loopback 0
    ipv6 enable
    ipv6 ospf 1 area 0

    note: apply area 0 on R2 when enabling ipv6 ospf.

    it should work, you can ping from R1 to R2 and vice versa.
    hope help

    read this below article, will help you understand.
    http://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/113204-ospfv3-vlink-config.html

  55. leaiolia
    January 5th, 2017

    hello all,

    can you please send me a last dump at (leaiolia at gmail dot com) i am having my exam next week.

    thanks in advance.

  56. leaiolia
    January 5th, 2017

    @ CHK
    thanks, it is working perfect, do we need to implemented in the exam ? or the loopbacks are allready advertised in the ospf ??

    thanks in advance.

  57. CoolGuy
    January 11th, 2017

    Cleared Exam Today … !!!!

    149Q +Tagwa 41 Qs are still valid.

    Got the followng Labs+Sim in exam
    OSPF Evaluation
    EIGRP OSPF Redistribution
    Policy Based Routing
    OSPFv3 Virtual Link

    Thanks DigitalTut and all those who shares their knowledge and useful stuff.

    Others who are preparing or ready to take exam — Best Of Luck —

  58. malik
    January 17th, 2017

    I pass my exam today with 947 marks. 149 + 41 are 100% valid. All questions from these two dumps nothing else.
    OSPF V3 Virvual link
    OSPF Evaluation
    Redistribution
    PBR
    OSPF V2

    CHAP Drag and Drop

  59. CoolGuy
    January 20th, 2017

    Hi Guys,

    From following link CCNP Labs +149Q +Tagwa 41 Qs can be downloaded.

    Note: Remove (total 8)”$” from the link to work

    ht$$tps:$$//1drv.ms/f/$$s!Aq7EzlPsYq2YgSN-WUs6kzGVn2V9K$$

  60. CoolGuy
    January 24th, 2017

    Hi Guys,
    From following link CCNP Labs +149Q +Tagwa 41 Qs can be downloaded.
    Note: Remove (total 8)”$” from the link to work
    ht$$tps:$$//1drv.ms/f/$$s!Aq7EzlPsYq2YgSN-WUs6kzGVn2V9$$

  61. fahm
    January 24th, 2017

    can any one send me tagwa 41qs

    {email not allowed} please

  62. ahemd erlrofaie
    January 24th, 2017

    Hi guys, I have passed my ccnp routing exam yesterday at (23/1/2017) with score (973), actually the dumps of 149q and 41q tagwa is still valid.
    Most the question came from the 41q tagwa, so you have to study it very well,
    BUT it important to study also the dump of 183q/32q/8q because it contain a lot of questions that you will not find them in both 149q and tagwa 41q dumps, in my exam none of new questions of 183q/32q/8q came, but I recommended to studied any way
    The sim in my exam:
    -ospf eigrp redistribution
    -ospf evaluation
    -ospfv3 with virtual-link
    -ospf sim
    -policy based routing sim
    The drag and drop:
    -CHAP drag (in tagwa 41q)

    Important notes about the sims:
    Regarding to sims , you should be careful because you might find that there some minor changes in the sims (like ip addess, subnets , ospf process numbers , eigrp autonomous number and so on) so check with show run command if that possible before starting the configuration, don’t not rush to configure blindly .
    In my exam, there was some little change in ospf evaluation, I mentioning below the question with changed answer:
    The question:
    Which of the following statements is true about the serial links that terminate in R3?
    A. The R1-R3 link needs the neighbor command for the adjacency to stay up
    B. The R2-R3 link OSPF timer values are 30, 120, 120
    C. The R1-R3 link OSPF timer values should be 10,40,40
    D. R3 is responsible for flooding LSUs to all the routers on the network.
    In dumps sim you will find that the correct answer is B, but in my exam that was not true, because I found that the exam changed the link R2-R3 timers to 10,40,40 and it was point-to-point link.
    also I found The link R1-R3 timer was 30,120,120 non-broad cast link, so both of the answers A , B are wrong .
    Also D was wrong because, R3 was not the DR in all the links,
    The right answer was A, because the link R1-R3 is non-broad-cast link so neighborship should be configured manually.
    So it is important to be carful .

    Important notes about tagwa 41q dump:
    It is important to mention that in tagwa 41q dump there some questions with wrong answers, here below I mentioned the question with the wrong answers:
    Question 2
    Refer to the following configuration command.
    router(config)# ip nat inside source static tcp 172.16.10.8 8080 172.16.10.8 80
    Which statement about the command is true?
    A. Any packet that is received in the inside interface with a source IP port address of
    172.16.10.8:80 is translated to 172.16.10.8:8080.
    B. Any packet that is received in the inside interface with a source IP port address of
    172.16.10.8:8080 is translated to 172.16.10.8:80.
    C. The router accepts only a TCP connection from port 8080 and port 80 on IP address
    172.16.10.8.
    D. Any packet that is received in the inside interface with a source IP address of 172.16.10.8
    is redirected to port 8080 or port 80.
    Answer:A
    Tagawa say the right answer is A , but that wrong the right answer is B (this question came in my exam)

    Question 28
    A network engineer wants to ensure an optimal end-to-end delay bandwidth product. The delay is
    less than 64 KB. Which TCP feature ensures steady state throughput?
    A. Window scaling
    B. Network buffers
    C. Round-trip timers
    D. TCP acknowledgments
    Answer:A
    Also that wrong the right answer is B
    For the dumps, you can send me at ahmedrofaii at gmail dot com , I will be glad to send them to you freely , for routing dumps and for switching , tshoot dumps
    I wish for you good luck in your exam  1

  63. Anonymous
    January 26th, 2017

    Hi Ahmed.. Thanks for sharing your experience..

  64. Hi
    February 7th, 2017

    Passed Routing today…but many new questions (6-7) in exam…still 149+41+183 valid…

  65. RBNS
    February 7th, 2017

    Anyone know if are there limitation on packet tracer for this lab? I tried many ways but I can not ping R4 R3 or R1 R4. Route not show on R1 and R4.

  66. peđa
    February 7th, 2017

    assignig loop interfaces to ospf areas gets the problem done

  67. Anonymous
    February 9th, 2017

    I don’t get the final test to ping from R4 to R1’s loopback, and vice-versa. I didn’t have to make any additional changes. I could instantly ping these addresses once the virtual link was configured. Am I missing something????

  68. PassCCNP
    February 9th, 2017

    Anonymous did you pass ?

  69. PassCCNP
    February 9th, 2017

    HI how about lab?

  70. pass
    February 10th, 2017

    hi all,

    just took exam today , passed 790/881 scored .total 46 Questios

    sim all come out .
    OSPF V3 Virvual link
    OSPF Evaluation
    Redistribution
    PBR
    OSPF V2

    but half of the exam questions from 149+41+183 only come out in my exam today .
    Half of the questions i never see or study before so is new . i simply answer.
    So you all must scored and collect all the sim or lab question.
    no drag and drop today.

  71. Anonymous
    February 17th, 2017

    I understand why you must advertise R4’s loopback. What I don’t understand is why I can’t even ping R3’s loopback until I add R4s loopback to area 54. It’s almost like R4 is trying to source from its loopback by default. What would it od that.

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