EzVPN client outside interface dropping/resetting?

[mnewnam06]

I have a customer whose outside interface occasionally quits responding to

monitoring queries. 3K <--> EzVPN. Has anyone seen this before? EzVPN

clients are running on C831(12.3(7)XR3) and C871(12.3(8)YI2). Thanks

[irisrios]

It colud due to keepalives setting mismatch.

Check isakmp keepalives in 3K vpn concentrator.

Check the nat-traversal/ipsec over tcp or udp configuration

Try this link:

http://www.cisco.com/en/US/tech/tk583/tk372/technologies_configuration_example09186a00800945cf.shtml