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Tunnel Interface & EIGRP Flapping Routes Case Study

 
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Tunnel Interface & EIGRP  Flapping Routes Case Study
 
 in this case, at first i had a Tunnel interface with real ip to connect to a remote site using this tunnel. i used static routes.
after that, we have configured EIGRP to work over MPLS, i have given the static routes used with the tunnel a higher administrative distance just to allow EIGRP  to be the primary routing protocol, and to use the tunnel as backup solution.
for example:

ip route 192.168.10.0 255.255.0.0 10.10.10.1 200

where 10.10.10.1 is the tunnel interface identifier "also it may be the other end of the tunnel identifier".

the problem was that, some routes may flap, because i forgot to shutdown the tunnel interface.
shutting down the tunnel interface, solved the problem.

Hope that has been informative to you.

Best Regards
Ahmed Mustafa

وصلي الله وسلم وبارك علي النبي وآله  وصحبه وإخوانه وسلم