Can anyone tell me whatthe above message means and how to resolve it.
The command will disable inbound aggresive mode connections.
If you want, there's an option to disable inbound aggresive mode connections on the tunnel-group as well.
tunnel-group xxxxxx ipsec-attributes
In this way you disable inbound aggresive mode connections from an specific peer.
If a peer tries to establish an aggresive mode connection, you should see a message like this in the logs:
''Unable to initiate or respond to Aggressive Mode while disabled''
This command will prevent Easy Virtual Private Network (Easy VPN) clients from connecting if they are using preshared keys because Easy VPN clients (hardware and software) use aggressive mode.