You can configure 802.1x parameters globally or on an interface.
IEEE 802.1x, or 802.1x in brief, is a port-based network access control protocol. 802.1x was originated from IEEE 802.11 for wireless local area network (WLAN) access and was first introduced to solve the problem of access authentication of WLAN users. Later, the 802.1x protocol was applied on the Ethernet as a common access control mechanism on LAN interfaces to solve problems of authentication and security on the Ethernet.
Port-based network access control indicates that authentication and control are implemented for access devices on an interface of a LAN access control device. A user device can access LAN resources only after it passes authentication.
NOTE: This node is only available in the NAC common mode.