MPLS Lab 005 Troubleshoot CE-to-CE connectivity problem

Image requirements:
VIRL: IOSv 15.7
EVE-NG: Cisco vIOS Router vios-15.6
GNS3: vios-adventerprisek9-m.vmdk.SPA.156-2.T

ISP's customer from the previous lab submits a ticket that there is a problem with the connection between the CE routers, you need to identify the problem and come up with the right solution to fix the issue. The problem might be due to MPLS incorrect configuration or at the customer location, approach this dilemma with proper troubleshooting method. 


Download Lab: EVE-NG | GNS3

During the implementation of the GRE tunnel between nodes CE1-A and CE1-B, network engineers at the customer the site was unable to establish the proper operation of the tunnel. Everything seems fine with configurations, tunnel interfaces are up, there is GRE's point-to-point network in the routing table of both CE routers but connectivity problem is still there. Unable to rectify on their own, a network engineer from client location asking for your assistance, suspecting that the issue might be caused by something at MPLS site.

1. Download the Lab, use your choice of network simulation software, access the customer's node and verify the problem by pinging the remote IP address of the tunnel 10 interface.
2. Select the proper troubleshooting approach to identify and fix the issues faster.
3. Apply necessary configuration to the topology.
4. Verify if the applied settings resolved the problem.

The solution to the problem:
If you are unable to fix on your own then click the button to learn what is the source of the trouble and how to correct it.

Spending time trying to resolve the problem in this lab will improve your ability to troubleshoot the L3 MPLS VPN infrastructure, it is important not just to able to configure but understand how the system of interdependent networking technologies operate to provide the service, solving the problem here will give you chance to waste less time in the real environment.


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