down: Gi 3/4100:24:55: %RPM0-P:CP %IFMGR-5-INACTIVE: Changed Vlan interface state toinactive: Vl 100:24:55: %RPM0-P:CP %IFMGR-5-OSTATE_UP: Changed interface state to up: Gi 3/4200:24:55: %RPM0-P:CP %IFMGR-5-ACTIVE: Changed Vlan interface state to active:Vl 100:24:55: %RPM0-P:CP %IFMGR-5-STATE_STBY_ACT: Changed interface state from standby to active:Gi 3/42Dell(conf-if-gi-3/41)#do show ip int brief | find 3/41GigabitEthernet 3/41 unassigned NO Manual administratively down downGigabitEthernet 3/42 unassigned YES Manual up up[output omitted]Dell#show interfaces port-channel briefCodes: L - LACP Port-channelLAG Mode Status Uptime Ports1 L2 up 00:08:33 Te 0/0 (Up)2 L2 up 00:00:02 Te 0/1 (Up)Dell#configureDell(conf)#interface port-channel 1Dell(conf-if-po-1)#switchport backup interface port-channel 2Apr 9 00:15:13: %STKUNIT0-M:CP %IFMGR-5-L2BKUP_WARN: Do not run any Layer2protocols on Po 1 and Po 2Apr 9 00:15:13: %STKUNIT0-M:CP %IFMGR-5-OSTATE_DN: Changed interface state todown: Po 2Apr 9 00:15:13: %STKUNIT0-M:CP %IFMGR-5-STATE_ACT_STBY: Changed interface stateto standby: Po 2Dell(conf-if-po-1)#Dell#Dell#show interfaces switchport backupInterface Status Paired Interface StatusPort-channel 1 Active Port-chato mannel 2 StandbyPort-channel 2 Standby Port-channel 1 ActiveDell#Dell(conf-if-po-1)#switchport backup interface tengigabitethernet 0/2Apr 9 00:16:29: %STKUNIT0-M:CP %IFMGR-5-L2BKUP_WARN: Do not run any Layer2protocols on Po 1 and Te 0/2Dell(conf-if-po-1)#Far-End Failure DetectionFar-end failure detection (FEFD) is supported on the Z9000 platform.FEFD is a protocol that senses remote data link errors in a network. FEFD responds by sending aunidirectional report that triggers an echoed response after a specified time interval. You can enable FEFDglobally or locally on an interface basis. Disabling the global FEFD configuration does not disable theinterface configuration.456 Layer 2