I have a tunnel with customer. I don't know any details on their end. We started experiencing connectivity issues. The tunnel would drop at least once to twice a month. After resetting the tunnel on my end, the traffic comes back up almost right away. I am not sure what to look for at this point nor do I know if this is something on my end or theirs. I'm using 5520/ I have over 70 tunnels in this device and none are experiencing those issues but this one. All tunnels are configured identically.
Is there anything I can do to pin-point the cause? how could I troubleshoot this ?