IS-IS Lab 15 Troubleshoot Multi-Area

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Download Lab: VIRL | EVE-NG | GNS3


Image requirements:
Cisco IOSv (vios-adventerprisek9-m.vmdk.SPA.156-2.T)


Introduction:  
Based on the previous lab, here, you will figure out what went wrong while the transition to multi-area IS-IS from a single L2 area, after configurations to the topology has been applied, multiple routers unable to ping IP addresses of other routers from their loopback 0 interfaces. This is a troubleshooting scenario lab, the main task is to restore connectivity caused by improper IS-IS implementation done in the last lab.  


Nodes Access: 
Enable:       cisco 
Username:  cisco 
Password:   cisco 


Topology:

  Shows IPv4 and IPv6 addresses of Loopback 0 interfaces.

 Reported issues:

1. Router A2 unable to ping any IP addresses assigned to loopback 0 interfaces in the topology if sourced from its own loopback 0 interface. 

2. Router B2 unable to ping any IP addresses assigned to loopback 0 interfaces in the topology if sourced from its own loopback 0 interface. 

3. Router D2 unable to ping any IP addresses assigned to loopback 0 interfaces in the topology if sourced from its own loopback 0 interface.


4. Router E2 unable to ping any IP addresses assigned to loopback 0 interfaces in the topology if sourced from its own loopback 0 interface. 


Validation: 

1. When ping is successful from A2's loopback 0 to B2's loopback 0...

2. When ping is successful from B2's loopback 0 to D2's loopback 0... 

3. When ping is successful from D2's loopback 0 to E2's loopback 0...

your troubleshooting effort will be completed.