EIGRP Neighbor Down: AS Mismatch

What you'll practise

• Bring up a point-to-point EIGRP adjacency between two routers
• Read show ip eigrp neighbors and verify neighbor state
• Understand the EIGRP Autonomous System requirement
• Correct a mismatched AS number on an EIGRP router instance
• Verify adjacency and EIGRP-learned loopback reachability

Set it up

1. 1

   Have the node image ready

   Images are not included. The file expects your own licensed copy of:

   • L3-ADVENTERPRISEK9-M-15.4-2T.bin

   If your copy has a different name, open each node's Edit dialog after importing and pick your image from the list.

2. 2

   Copy it to the server and fix permissions

   Replace <your-server> with the IP address or hostname of your EVE-NG or PNETLab server.

   $ scp eigrp-neighbor-as-mismatch-lab.unl root@<your-server>:/opt/unetlab/labs/
   # then, logged in to the server:
   $ /opt/unetlab/wrappers/unl_wrapper -a fixpermissions

3. 3

   Open it and start the nodes

   The canvas notes list the objectives, and the workbook walks through the fix.