MAB 802.1x Support
Standalone MAC Authentication Bypass (MAB) is an authentication method that grants network access to specific MAC addresses regardless of 802.1X capability or credentials. As a result, devices such as cash registers, fax machines, and printers can be readily authenticated, and network features that are based on authorization policies can be made available.
For further information, see the Authentication Authorization and Accounting Configuration Guide, Cisco IOS XE