Information about Encrypted Mobility Tunnel
A secure link in which data is encrypted using CAPWAP DTLS protocol can be established between two controllers. This secured link is called Encrypted Mobility Tunnel.
If encrypted mobility tunnel is in enabled state, the data traffic is encrypted and the controller uses UDP port 16667, instead of EoIP, to send the data traffic.
In Release 184.108.40.206, when encryption is enabled on a controller, by default both control and data traffic is encrypted. However, based on your network requirements you can disable or enable data traffic encryption on the controller.
To ensure that controllers with expired MIC certificates are able to join the encrypted mobility tunnel enabled network, an existing CLI is used to disable the MIC certificate date validation.
This command disables the date validation check during Cisco AP join and encrypted mobility tunnel creation. When the config ap cert-expiry-ignore CLI is enabled, the lifetime check is disabled.