EzVPN IOS Client with VPN3k - Tunnel Drops
Is anyone successfully using the IOS EzVPN Client to connect to a VPN
Concentrator? I am attempting to get an 837 to reliably connect to a VPN
Concentrator (running 3.6.8A) in Network Extension Mode. The EzVPN client
router is running 12.3(7)T1.
The connection is established, but drops after a period of time, usually
after a period of non-activity, where no traffic traverses the IPSec
tunnel. The only fix appears to be to issue "clear crypto ipsec client
ezvpn", or a reload of the Concentrator appears to force a tunnel
re-establishment (even though the remote endpoint is not listed in the
Concentrator's active sessions).
Other code revisions, 12.3(7)T and 12.3(4)T4 have been tried with the same
results. I have disabled idle timeouts in the Group configuration of the
Concentrator, but that hasn't had an effect. Group and user XAUTH
authentication is configured, but I've also disabled XAUTH
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