CFM Conditions > MEP-DOWN The CFM Conditions > MEP-DOWN subtab allows you to configure the MEP-DOWN. The following table describes the MEP-DOWN subtab page fields and buttons. Item Description Port Displays the port number. Domain Choose a maintenance domain profile from the drop-down list. SVLAN Choose a SVLAN identifier from the drop-down list. The range of SVLAN identifier is from 1 to 4093. Refresh Refreshes the tab fields. Show Shows the list of SVLAN AIS ports. Help Displays context-sensitive help.