I have the following L2L VPN scenario:
(192.168.200.X)--Router2801 --|Internet|-- ASA5510 (192.168.10.X, 192.168.20.X, 192.168.30.X,....)
At Router2801 side I'm able to access any network at the ASA5510 side and vice-versa, but sometimes it seems connection cannot goes through even tunnel state showing state MM_ACTIVE. So I go into Router2801 and issue a ping (telling the source interface) to any address in any network at the ASA5510 and everything is fine again.
Router2801#ping 192.168.30.1 source 192.168.200.1
After that traffic from 192.168.30.x to 192.168.200.x is OK. The same for all other networks.
As far as I could note, from ASA side there's nothing I can do when the traffic stops flowing. At Router2801 any kind of traffic can "initiate" the flow again.
Any thoughts will be appreciated