Vl 100:24:55: %RPM0-P:CP %IFMGR-5-STATE_STBY_ACT: Changed interface state fromstandby to active:Te 3/11/2Dell(conf-if-te-3/11/1)#do show ip int brief | find 3/11/1TenGigabitEthernet 3/11/1 unassigned NO Manual administratively down downTenGigabitEthernet 3/11/2 unassigned YES Manual up up[output omitted]Example of Configuring Redundant Pairs on a Port-ChannelDell#show interfaces port-channel briefCodes: L - LACP Port-channelLAG Mode Status Uptime Ports1 L2 up 00:08:33 Te 1/1/1 (Up)2 L2 up 00:00:02 Te 1/2/1 (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 1/2/1Apr 9 00:16:29: %STKUNIT0-M:CP %IFMGR-5-L2BKUP_WARN: Do not run any Layer2protocols on Po 1 and Te 1/2/1Dell(conf-if-po-1)#Far-End Failure DetectionFar-end failure detection (FEFD) is a protocol that senses remote data link errors in a network. FEFDresponds by sending a unidirectional report that triggers an echoed response after a specified timeinterval. You can enable FEFD globally or locally on an interface basis. Disabling the global FEFDconfiguration does not disable the interface configuration.520 Layer 2
