Hi,
In wired 802.1X authentication scenarios, the authentication event solution can be used to configure the escape function.
In wireless 802.1X scenarios, WLAN devices do not support the escape function.
Configuration Method:
1. Configure a service scheme and define resources that users can access when the emergency channel is enabled.
a. Run the service-scheme service-scheme-name command in the AAA view to create the escape scheme.
b. In the escape scheme, define service resources that users can access when the emergency channel is enabled based on ACLs, VLANs, or UCLs.
2. Configure the emergency channel when the authentication server is Down or the client does not respond.
For details, see https://support.huawei.com/hedex/hdx.do?docid=EDOC1100062239&id=c_fault_prevention_016&lang=en