Disabling an interface shuts down all protocols working on that interface’s connected line. It does notdelete your previous FEFD configuration which you can enable again at any time.To set up and activate two or more connected interfaces, use the following commands.1. Setup two or more connected interfaces for Layer 2 or Layer 3.INTERFACE modeip address ip address, switchport2. Activate the necessary ports administratively.INTERFACE modeno shutdown3. INTERFACE modefefd {disable | interval | mode}Example of Viewing FEFD ConfigurationDell(conf-if-te-1/1)#show config!interface TenGigabitEthernet 1/1no ip addressswitchportfefd mode normalno shutdownDell(conf-if-te-1/1)#do show fefd | grep 1/1Te 1/1 Normal 3 UnknownDebugging FEFDTo debug FEFD, use the first command. To provide output for each packet transmission over the FEFDenabled connection, use the second command.• Display output whenever events occur that initiate or disrupt an FEFD enabled connection.EXEC Privilege modedebug fefd events• Provide output for each packet transmission over the FEFD enabled connection.EXEC Privilege modedebug fefd packetsExamples of the debug fefd CommandsDell#debug fefd eventsDell#configDell(conf)#int te 1/1/1Dell(conf-if-te-1/1/1)#shutdown2w1d22h: %RPM0-P:CP %IFMGR-5-ASTATE_DN: Changed interface Admin state to down:Te 1/1/1Dell(conf-if-te-1/1/1)#2w1d22h : FEFD state on Te 1/1/1 changed from ANY toUnknown2w1d22h: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Te1/1/12w1d22h: %RPM0-P:CP %IFMGR-5-OSTATE_DN: Changed interface state to down: Te4/1/1524 Layer 2
