I've an IPSec tunnel between Cisco ASA5540 and Cisco 2851. I use this tunnel for Video conferenc calls as well where I am facing a wiered problem.
IPSec tunnel resets h323hostcall TCP connection ( on TCP port 1720) after 1 hour and call gets disconnected. I've gathered logs on both VC (Video conference) client and gatekeeper side and saw resets as follows:
On Client side( behind 2851): a TCP reset sent by Gatekeeper( behind ASA)
On Gatekeeper side : a TCP reset sent by client
Now i dont see any TCP reset generated on client or Gatekeeper itself which means these are generated by ASA and sent both ways. I even configured conn and h252 idle timeout to be 2 hours on ASA ( default is 1 hour on ASA) but its still same.
Please let me know if there's anything missing.