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GNS3 Lab & Exercise: OSPF Case Study & Lab Scenario 3

Written by LBSources from http://www.gns3-labs.com on August 13th, 2010 | 27 Comments

How are we doing? So! As for me, I’ve beat the deadline for my CCNA expiration as well as the BSCI deadline! Wohoo! Very happy to say the least. Right now I’m working on SWITCH and hope to have this completed by the end of September..

There is a new site online that took the idea of this site (though they say they didn’t know this site existed) and is doing it 100 times better. If I could redo what I started here, I’d definitely do it a little differently today. But hey, at the time I was the only site. Anyway – the new GNS3 lab site dedicated and full of GNS3 labs is called GNS3-Vault and you can check it out at http://www.gns3vault.com .. Go check it out – they are doing a far better job with current labs than I can.

As for me, I’m studying very hard with the SWITCH studies and a new technical/study/personal blog at http://echoreplypackets.net. I’m sure I’ll be even more busy when I hit TSHOOT. I’m not saying I’m taking the site down or stopping labs, but this will end up becoming the site where I upload labs that I’ve used my own as well as labs that you guys contribute more than a lab supplying site.

GNS3 Vault is a great site! Go over and support it! Plenty of good labs.

Now onto the lab!

This labs come from below. If you use the link below and purchase this book – you help me pay hosting bills :)

CCNP Building Scalable Internetworks (BSCI 642-901) Lab Portfolio (Cisco Networking Academy)

Instructions
Plan, design, and implement the International Travel Agency (ITA) network
shown in the diagram and described below. Verify that all configurations are
operational and functioning according to the guidelines.


Scenario

The ITA needs its core network set up for OSPF with the following
specifications. Use the addressing scheme shown in the diagram.

  • Configure the OSPF backbone area on the Ethernet connection between R1and R5.
  • Configure the Frame Relay subnet as a point-to-multipoint network in area 100.
  • Configure R2’s loopback interfaces to be in area 200. Summarize this area with the most efficient summary.
  • Configure the Ethernet connection between R3 and R4 to be in area 300.
  • Add the loopback on R3 to area 300.
  • Make area 300 a totally NSSA area.
  • Redistribute the loopback networks on R4 that do not belong in any OSPF area.
  • Create virtual links as necessary for full connectivity.
  • Make sure that all loopback interfaces get advertised with the correct subnet mask.

Routers Used:3640 (Any type should be fine)

IOS: c3640-ik9o3s-mz.124-25b

Feature of Topology: OSPF, Redistribution, Summarization, NSSA, Point-To-Point, Sub-interfaces, Virtual-links

Image:

Download: Gns3-Labs:: OSPF-Case-Study-Lab-Scenario-3

Enjoy .. LBS

P.S. If you would like to donate for the time it takes to do all of this, feel free to use the link below. Thank you in advance for any contribution you make :)


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27 Responses to “GNS3 Lab & Exercise: OSPF Case Study & Lab Scenario 3”

  1. avatar Rene Molenaar

    Thanks for this blogpost, I really appreciate this!

    Rene

  2. avatar CK

    Great lab! I finished it all but the loopback correct subnets. However the “solution” configs are not there. They are basically the startup configs I wanted to see if I got it all right and the answer to the last question. Do you think you can upload the zip with the solutions included?

    Thanks again and please keep posting labs, they are very well thought out and challenging.

  3. avatar r2d2

    I think the Virtual links comes From the R2 to R3, i dont know what they mean about redistribute the loopbacks on R4, is only for not to be on the OSPF Network ?

    thx in advance.

  4. avatar encryptic

    Thanks for the the time and support,

  5. avatar Fantasia

    Great lab indeed. I finished it but I’m not sure if my solution is the same as the creator’s solution.
    @CK, I think the solution to get the correct subnets for the loopback is to set the ospf network type to point-to-point for every loopback interface. :D

  6. avatar Anthony

    Looking forward to working on your lab exercises for my CCNP Route exam.

    I missed the deadline for the BSCI exam and I’m glad that I did. I think that the new exams are prepared better for the work in the field that we’ll be doing.

    Thanks for creating these guides and labs.

    Anthony

  7. avatar ciscotur

    hello friends. every body download this ios at bottom link.

    see you

    http://www.4shared.com/dir/S-TXuIGK/Cisco_IOS.html

  8. avatar Kang Yao

    Hi everyone,

    I have two questions,

    1) R1 becomes neighbors with R2 and R3. However, R2 and R3 are not neighbors. So, this is just a partial mesh. Why don’t we have mapping issues with partial mesh? I check Fram-relay map on R2 and R3. There is nothing.

    2) I check the configuration of Interface Serial 1/0.301, it is a point-to-point interface. However, ip ospf network type is point-to-multipoint. What’s the differences between these two concepts?

    Thanks

  9. avatar kidwitgame

    Hi kang,

    In response to your question (2) above, think the following:

    a)An OSPF network type of point-to-point does not need a DR/BDR since there are only two routers on such a link
    b)Similarly, in a point-to-multipoint network type, there is no DR/BDR election and there is dynamic neighbor discovery (As the name implicitly suggests point-to-multipoint).Otherwise, without dynamic neighbor discovery, it is otherwise known as point-to-multipoint nonbroadcast

  10. avatar INDIA

    http://gns3cisco.blogspot.com/2011/05/gns3cisco-help-you-pass-your-ccna-ccnp.html
    this site help you pass your CCNA CCNP Exam

  11. avatar Praveen

    LBSource i used to visit this blog and say u are just awesome friend please keep this site alive and please please post new GNS3 routing and Switching LAB hope u reponded to my request becoz from last few years there is no new stuff uploaded on this web site

  12. avatar stteng

    I am confused. I downloaded the GNS3 Lab & Exercise: OSPF Case Study & Lab Scenario 3 and opened up the Solution’s GNS3 topology and get the GNS3 Lab & Exercise: GNS3-Labs – BGP & EIGRP Case Study 4 Core [NOT Solution] topology instead.

    Did I do something wrong? It is weird. I thought that I had downloaded the wrong lab.

    I need to know so that I don’t go crazy!

    Thanks
    stteng

  13. avatar univlib

    Here is a list of videos tutorials about gns3 :
    http://www.megaupload.com/?f=IWU9FFW5

  14. avatar universelib

    GNS3 is the greatest network sim it does it all, it can be connected to real world and internet, it runs the real cisco IOS in a virt env, chkeck out some video tutorials of gns3 http://megaupload.com/?f=IWU9FFW5 and here is a list of cisco IOS to download : megaupload.com/?f=NAAUJN6G

  15. avatar cyberguy

    Hi,
    I am totally new to ccna. It would great if the tutorials could be arranged in order of difficulty.

  16. avatar Dedicated Hosting

    Dedicated Hosting…

    [...]GNS3 Lab & Exercise: OSPF Case Study & Lab Scenario 3 | GNS3 Labs :: Cisco Router Simulator Network Labs & Topologies[...]…

  17. avatar Ashish

    Can you please upload correct solution for it.

  18. avatar escorte bucuresti

    escorte bucuresti…

    [...]GNS3 Lab & Exercise: OSPF Case Study & Lab Scenario 3 | GNS3 Labs :: Cisco Router Simulator Network Labs & Topologies[...]…

  19. avatar surgical excision

    Heya i’m for the primary time here. I came across this board and I to find It really useful & it helped me out a lot. I hope to provide one thing back and aid others like you helped me.

  20. avatar chen

     
    O IA    10.1.1.8/30 [110/65] via 10.1.1.1, 00:00:05, Serial1/0
    O IA    10.5.5.0/24 [110/66] via 10.1.1.1, 00:00:05, Serial1/0
    C       10.1.1.0/29 is directly connected, Serial1/0
    O       10.1.1.1/32 [110/64] via 10.1.1.1, 00:00:05, Serial1/0
    C       10.1.1.104/30 is directly connected, Loopback105
    C       10.1.1.108/30 is directly connected, Loopback109
    C       10.1.1.100/30 is directly connected, Loopback101
    C       10.1.1.112/30 is directly connected, Loopback113
     
    This is R2 ,i dont't know why?

  21. avatar Anunturi escorte

    Anunturi escorte…

    [...]GNS3 Lab & Exercise: OSPF Case Study & Lab Scenario 3 | GNS3 Labs :: Cisco Router Simulator Network Labs & Topologies[...]…

  22. avatar Branislav

    Hi I have problem open it can you please describe what kindof routers did you use and what IOSes ?
    Thanks

  23. avatar carlosloco75

    Done!! Great lab
    -to see the actual mask of the loopback interfaces user the ip ospf network point-to-point command under if-config mode
    - to redistribute the loopback network on R4 use the redistribute connected subnets command under the ospf config mode
     
    I leave the final ip route of R1 as a reference
     
     
         10.0.0.0/8 is variably subnetted, 9 subnets, 5 masks
    C       10.1.1.8/30 is directly connected, FastEthernet0/0
    O IA    10.1.1.12/30 [110/65] via 10.1.1.3, 00:16:35, Serial0/1
    O       10.1.1.2/32 [110/64] via 10.1.1.2, 00:16:50, Serial0/1
    O       10.1.1.3/32 [110/64] via 10.1.1.3, 00:16:50, Serial0/1
    O       10.5.5.0/24 [110/2] via 10.1.1.10, 00:16:35, FastEthernet0/0
    O E2    10.4.4.0/24 [110/20] via 10.1.1.3, 00:08:35, Serial0/1
    O IA    10.3.3.0/24 [110/65] via 10.1.1.3, 00:13:32, Serial0/1
    C       10.1.1.0/29 is directly connected, Serial0/1
    O IA    10.1.1.96/27 [110/65] via 10.1.1.2, 00:16:37, Serial0/1
     
    and R2
     
         10.0.0.0/8 is variably subnetted, 13 subnets, 5 masks
    O       10.1.1.8/30 [110/65] via 10.1.1.1, 00:15:56, Serial0/1.201
    O IA    10.1.1.12/30 [110/129] via 10.1.1.1, 00:15:56, Serial0/1.201
    O       10.1.1.3/32 [110/128] via 10.1.1.1, 00:16:16, Serial0/1.201
    O       10.5.5.0/24 [110/66] via 10.1.1.1, 00:15:56, Serial0/1.201
    O E2    10.4.4.0/24 [110/20] via 10.1.1.1, 00:07:55, Serial0/1.201
    O IA    10.3.3.0/24 [110/129] via 10.1.1.1, 00:12:53, Serial0/1.201
    C       10.1.1.0/29 is directly connected, Serial0/1.201
    O       10.1.1.1/32 [110/64] via 10.1.1.1, 00:16:17, Serial0/1.201
    C       10.1.1.104/30 is directly connected, Loopback105
    C       10.1.1.108/30 is directly connected, Loopback109
    O       10.1.1.96/27 is a summary, 00:52:51, Null0
    C       10.1.1.100/30 is directly connected, Loopback101
    C       10.1.1.112/30 is directly connected, Loopback113

  24. avatar iv_28

    yeah Carlos
    just for adding more redistribute control i make a route map
     
    here is my config
     
     
    router ospf 1
     log-adjacency-changes
     area 300 nssa
     redistribute connected metric 100 subnets route-map REDES
     network 10.1.1.12 0.0.0.3 area 300
     
     
    router ospf 1
     log-adjacency-changes
     area 300 nssa
     redistribute connected metric 100 subnets route-map REDES
     network 10.1.1.12 0.0.0.3 area 300

  25. avatar iv_28

     
    ip prefix-list RED seq 5 permit 10.4.4.0/24
    route-map REDES permit 10
     match ip address RED

  26. avatar gt500

    it seems solution router configs are incorrect. can someone upload correct solution? thanks in advance

  27. avatar sara

    hi everybody 
    can i have the solution of the lab ^_^

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