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Troubleshooting Lab Challenge 2

June 6th, 2015 in Lab Challenges Go to comments

Troubleshooting Lab Challenge 2:

Note: We created this lab challenge to help you get some practice with networking problems only. These labs are only for fun and do not appear in the TSHOOT exam.

Introduction

Recently our corporation has just acquired some companies. Our networking engineers are working to merge their networks into ours. An engineer has edited the network configuration and now our users are experiencing network issues. They have contacted you to resolve the issues and return the network to full functionality.

Below are the IPv4 Layer 3 Topology and IPv6 Topology (No switch is used in this challenge so we don’t have a Layer 2 Topology):

Topology.jpg

 

Topology_IPv6.jpg

To troubleshooting effectively you should understand how this network operates. We summarize it as follows:

+ OSPF process 1 is running between R1, R2, R3, R4 and R5
+ RIP version 2 is running between R2 and R6
+ EIGRP AS 10 is running between R3, R7 and R8
+ Redistribution is configured on R2 & R3 to exchange OSPF, RIP and EIGRP information
+ R5 is connected to an Internet Service Provider (ISP) via BGP 65002. R5 is also providing NAT translation between inside networks (10.0.0.0/24 & 192.168.1.0/24) and outside network (201.15.3.4/30 & 201.15.3.17)
+ R5 is connected to the OSPF backbone area via a OSPF virtual-link. It is a temporary solution for merging them
+ Two access-lists are applied on R5 to increase security for the inside networks
+ Users are allocated prefixes of 192.168.1.0/24 & 10.2.2.0/24. They are represented by Client 1 & Client 2
+ R1, R2 and R3 are connected via DMVPN (this is a new topic in the ROUTEv2 exam. If you don’t understand about DMVPN and NHRP, please ignore ticket 14 & 15.)
+ For security reason, the network between R4 & R5 (10.1.1.20/30) is hidden from all other routers via a filter-list on R4.
+ In the IPv6 Topology R1, R3, R4 and R5 are running OSPFv3 AS#10 while R3 and R8 are running RIPng. Redistribution is performed on R3 so that these two IPv6 routing protocols can see each other.
+ Traceroute commands are not supported in this challenge (that would make the challenge too easy)

There are 15 tickets waiting for you to resolve. Each ticket only contains one error. Below are the links to access them:

Ticket 1 Ticket 2 Ticket 3 Ticket 4 Ticket 5 Ticket 6 Ticket 7 Ticket 8
Ticket 9 Ticket 10 Ticket 11 Ticket 12 Ticket 13 Ticket 14 Ticket 15  

We hope you can solve all these problems. The difficulty of this challenge is same of the TSHOOT exam (for routers only). Please tell us if you like them or not so that we can continue making more in the future.

Comments (39) Comments
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  1. Natasha
    September 21st, 2016

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  2. Aymoon
    September 22nd, 2016

    Is there a saved version i can emulate in GNS3 ?

  3. Matrix
    September 26th, 2016

    Hi erveryone,

    When I access every ticket, the buttons (Q, R1-4, R5-8 and HA) do not appear in my browsers on windows 10.
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    September 28th, 2016

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  5. rikker
    September 29th, 2016

    In ticket 7, where the problem is an errant eigrp AS number for R8, your output is deceptive. I ran the sh ip eigrp neighbor command on R3 and R7 and it showed R8 as a neighbor. But when I ran the same command on R8, it showed no eigrp neighbor relationship.

    If the AS number on R8 was errant, no neighbor relationship would show on R3 and R7. And this would have led me to the answer a lot more quickly than I actually took.

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    October 7th, 2016

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  8. Ticket 2 : Troubleshooting Lab Challenge 2
    October 10th, 2016

    Hi networktut, Please check the correct answer for ticket 2. It seems wrong access-list defined in answer on R5.

  9. Ticket 2 : Troubleshooting Lab Challenge 2
    October 10th, 2016

    Sorry, wrong prefix-list on R4.

  10. networktut
    October 10th, 2016

    @rikker: Thanks for your detection. We have just updated that ticket.

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    October 10th, 2016

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  13. Peter
    October 14th, 2016

    for ticket 9, why cant you just remove key 1? I don’t see why remove key 1 from R8 would not correct the issue.

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    October 22nd, 2016

    Hi,

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    November 2nd, 2016

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  19. Anonymous
    November 3rd, 2016

    Are there any Lab Challenge 2 Explanations

  20. networktut
    November 3rd, 2016

    @Anonymous: We are sorry but we don’t make explanation for this lab.

  21. networktut
    November 3rd, 2016

    @Abed: You can only use “show”, “ping”, “traceroute” commands. For more information about this exam, please read http://www.networktut.com/tshoot-faqs-tips

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