Pings through ASA VPN fails time to time

fgasimzade used Ask the Experts™
I have a similar problem. VPN is up and working, pings are ok, but sometimes pings disappear while vpn is up. After I issue clear crypto isakmp sa command, everything works fine again. What can be a possible issue with it?

Thank you in advance
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have you tried changeing the ISAKMP keepalive settings?
Normally, keepalvies help prevent intermittent dropping of L2L and remote access tunnels.

Keepalives are normally set around 15, so try changing this setting  10  is usually the default. Setting is done on the tunne-group

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