2-137Cisco Catalyst Blade Switch 3130 and 3032 for Dell Command ReferenceOL-13271-03Chapter 2 Cisco Catalyst Blade Switch 3130 and 3032 for Dell Cisco IOS Commandsdot1x mac-auth-bypassdot1x mac-auth-bypassUse the dot1x mac-auth-bypass interface configuration command on the switch stack or on astandalone switch to enable the MAC authentication bypass feature. Use the no form of this commandto disable MAC authentication bypass feature.dot1x mac-auth-bypass [eap]no dot1x mac-auth-bypassSyntax DescriptionDefaults MAC authentication bypass is disabled.Command Modes Interface configurationCommand HistoryUsage Guidelines Unless otherwise stated, the MAC authentication bypass usage guidelines are the same as theIEEE 802.1x authentication guidelines.If you disable MAC authentication bypass from a port after the port has been authenticated with its MACaddress, the port state is not affected.If the port is in the unauthorized state and the client MAC address is not the authentication-serverdatabase, the port remains in the unauthorized state. However, if the client MAC address is added to thedatabase, the switch can use MAC authentication bypass to re-authorize the port.If the port is in the authorized state, the port remains in this state until re-authorization occurs.If an EAPOL packet is detected on the interface during the lifetime of the link, the switch determinesthat the device connected to that interface is an IEEE 802.1x-capable supplicant and uses IEEE 802.1xauthentication (not MAC authentication bypass) to authorize the interface.Clients that were authorized with MAC authentication bypass can be re-authenticated.For more information about how MAC authentication bypass and IEEE 802.lx authentication interact,see the “Understanding IEEE 802.1x Authentication with MAC Authentication Bypass” section and the“IEEE 802.1x Authentication Configuration Guidelines” section in the “Configuring IEEE 802.1xPort-Based Authentication” chapter of the software configuration guide.eap (Optional) Configure the switch to use Extensible Authentication Protocol(EAP) for authentication.Release Modification12.2(40)EX1 This command was introduced.
