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Sunday, December 4, 2011

%DUAL-5-NBRCHANGE: IP-EIGRP(0) 250: Neighbor 10.100.1.1 (Tunnel120) is down: holding time expired

We configured a 2811 series router for dmvpn. Our two tunnels are up but one of the tunnel is flapping with this message. How can we fix this problem.

It's actually called the hold timer in EIGRP but is really the same thing as the dead timer in OSPF. The holding timer expired means that you missed three hellos and declared the peer down. A possibly necessary band aid is setting the hold time higher, though you should also really find out why packets are not being delivered

Tweak the ip hold-time and you should be able to resolve the issue.


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