Cisco VPN Site to Site - ASA 5520 and 5505 intermittent

[dpatkins]

Good day.

We have a site to site client that is having issue with intermittent disconnects.  The Main endpoint is a CIsco ASA 5520 8.4.3 and the remote site has a a Cisco ASA 5505 8.2.5.

If we have a disconnect, we can "logout" of the Main ASA and the connection seems to find itself and traffic will flow.  This take place about every 1 - 5 minutes but if you reset the crypto (which I am assuming you do) by logging out under the Logging Monitor Session - ikev1 sessions.  It all starts right back up.

I am stumped. At first I thought MTUs but I am not sure that is the answer. 

Does anyone have any ideas?

Dwane

[dpatkins]

I would like to add that this is conected via a DSL line at the Remote site.  Could that be something that i need to look at.

Any help would be appreciated.