MAC Authentication Bypass (MAB) can be used to authenticate devices which are unable to use the EAP protocol. The Supplicant never directly talks with the Authentication Server. The Supplicant and Authenticator communicate using an EAP protocol such as PEAP, EAP-TLS or EAP-FAST and then the Authenticator communicates with the Authentication Server using RADIUS. The Authentication Server is the AAA Server (working with the RADIUS protocol) which is a part of ISE.The Authenticator is the Network Infrastructure device, such as a Cisco Switch or Cisco Wireless LAN controller which acts as a middleman between the Supplicant and the Authentication Server.
#IDENTITY SERVICES ENGINE MAC ADDRESS LOOKUP FAILURE SOFTWARE#
The Dot1x process consists of three components which are the Supplicant, the Authenticator, and the Authentication server. This access level of the network is usually the physical network switch interface or Wireless Access Point where the device is connecting to the network.
The 802.1X protocol is commonly known as Dot1x and uses EAP (Extensible Authentication Protocol) and the RADIUS protocol together to provide Authentication for devices at the access level of the network. How ISE Authenticates Users and Devices 802.1x
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