79To do… Use the command… Remarks3. Enable the online handshakefunction dot1x handshake OptionalEnabled by defaultSome 802.1X clients do not support exchanging handshake packets with the switch. In this case, you needto disable the online user handshake function on the switch; otherwise the switch will tear down theconnections with such online users for not receiving handshake responses.Enabling the multicast trigger functionWith the 802.1X multicast trigger function enabled, a port will periodically send multicastmessages to clients to initiate authentication. This function is used for clients that cannot initiateauthentication unsolicited.Follow these steps to configure the multicast trigger function:To do… Use the command… Remarks1. Enter system view system-view —2. Enter Ethernet interface view interface interface-type interface-number —3. Enable the multicast triggerfunction dot1x multicast-trigger OptionalEnabled by defaultSpecifying a mandatory authentication domainfor a portWith a mandatory authentication domain specified for a port, the system uses the mandatoryauthentication domain for authentication, authorization, and accounting of all 802.1X users on theport.Follow these steps to specify a mandatory authentication domain for a port:To do… Use the command… Remarks1. Enter system view system-view —2. Enter Ethernet interface view interface interface-type interface-number —3. Specify a mandatoryauthentication domain for theportdot1x mandatory-domaindomain-nameRequiredNot specified by default