The strange thing is, that there are more than 27 routers (mix of 7200, ASR 1000, ISR) connected to the central site, but just this one is having problems. I have compared the configs and didn't find any difference. I tried to shut - no shut tunnel, no change in behaviour.
The strangest thing is, that the problem has dissapeared for some 3 weeks without any reason, but has reappeared after the DMVPN tunnel interface went down and up recently.
Has anyone ever experieced this as well?
What might be the cause?
Do you have any clue where to look for troubleshooting?
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