Dell PowerSwitch S4820T 9.50.1 Configuration Guide for the S4820T System - Page 556
Configuring FEFD, Local, Event, Local State, Remote, State, Admin, Status, Protocol
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4. If the FEFD enabled system is configured to use FEFD in Normal mode and neighboring echoes are not received after three intervals, (you can set each interval can be set between 3 and 300 seconds) the state changes to unknown. 5. If the FEFD system has been set to Aggressive mode and neighboring echoes are not received after three intervals, the state changes to Err-disabled. You must manually reset all interfaces in the Errdisabled state using the fefd reset [interface] command in EXEC privilege mode (it can be done globally or one interface at a time) before the FEFD enabled system can become operational again. Table 38. State Change When Configuring FEFD Local Event Mode Local State Remote State Local Admin Status Local Protocol Status Remote Admin Status Remote Protocol Status Shutdown Normal Admin Unknown Down Down Up Shutdown Down Shutdown Aggressive Admin Err- Up Shutdown disabled Down Up Down FEFD Normal Bi- Bi- Up Up Up Up enable directional directional FEFD Aggressive Bi- Bi- Up Up Up Up enable directional directional FEFD + FEFD disable Normal Locally disabled Unknown Up Down Up Down FEFD + FEFD disable Aggressive Locally Err- Up disabled disabled Down Up Down Link Failure Normal Unknown Unknown Up Down Up Down Link Failure Aggressive Err- Err- Up disabled disabled Down Up Down Important Points to Remember • FEFD enabled ports are subject to an 8 to 10 second delay during an RPM failover before becoming operational. • You can enable FEFD globally or on a per-interface basis. Interface FEFD configurations override global FEFD configurations. • Dell Networking OS supports FEFD on physical Ethernet interfaces only, excluding the management interface. Configuring FEFD You can configure FEFD for all interfaces from CONFIGURATION mode, or on individual interfaces from INTERFACE mode. To enable FEFD globally on all interfaces, use the following command. • Enable FEFD globally on all interfaces. CONFIGURATION mode fefd-global 556 Layer 2
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