578 | Layer 2w w w . d e l l . c o m | s u p p o r t . d e l l . c o m 5. If the FEFD system has been set to Aggressive mode and neighboring echoes are not received afterthree intervals, the state changes to Err-disabled. All interfaces in the Err-disabled state must bemanually reset using the fefd reset [interface] command in EXEC privilege mode (it can be doneglobally or one interface at a time) before the FEFD enabled system can become operational again.Important Points to Remember• FEFD enabled ports are subject to an 8 to 10 second delay during an RPM failover before becomingoperational.• FEFD can be enabled globally or on a per interface basis, interface FEFD configurations overrideglobal FEFD configurations.• FTOS supports FEFD on physical Ethernet interfaces only, excluding the management interface.Configuring FEFDYou can configure FEFD for all interfaces from CONFIGURATION mode, or on individual interfacesfrom INTERFACE mode.Enable FEFD GloballyTo enable FEFD globally on all interfaces enter the command fefd-global in CONFIGURATION mode.Report interval frequency and mode adjustments can be made by supplementing this command as well.Table 25-1. State Changes When Configuring FEFDLocal Event Mode Local State Remote StateLocalAdminStatusLocalProtocolStatusRemoteAdminStatusRemoteProtocolStatusShutdown Normal Admin Shutdown Unknown Down Down Up DownShutdown Aggressive Admin Shutdown Err-disabled Up Down Up DownFEFD enable Normal Bi-directional Bi-directional Up Up Up UpFEFD enable Aggressive Bi-directional Bi-directional Up Up Up UpFEFD + FEFD disable Normal Locally disabled Unknown Up Down Up DownFEFD + FEFD disable Aggressive Locally disabled Err-disabled Up Down Up DownLink Failure Normal Unknown Unknown Up Down Up DownLink Failure Aggressive Err-disabled Err-disabled Up Down Up DownStep Task Command Syntax Command Mode1 Setup two or more connectedinterfaces for Layer 2 or Layer 3 useip address ipaddress, switchportINTERFACE
