Hi
I have a mysterious problem with my DMVPN configuration. I have one hub (Cisco 1721 with IOS 12.2(13)T5) and two spokes (Cisco 1760 router also with IOS 12.2.(13)T5 ). Everything works fine until a moment when the tunnel interface (mGRE) of the hub drops the packets(Input queue: 76/75/1158/0 (size/max/drops/flushes); Total output drops: 0). The results are lost of connectivity and no NHRP updates. The SAs of Isakmp and IPSec are OK.
Can anyone tell me what is the problem?
Thank you for your time.