Dell PowerSwitch S5212F-ON EMC SmartFabric OS10 User Guide Release 10.5.1 - Page 449
Enable FEFD globally, Table 23. FEFD state changes
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● In the unknown state, the interface starts transmitting link state information at a regular interval. The interface state changes to bi-directional when a handshake is complete with the peer. ● When an interface is in bi-directional state, if it does not receive an echo from its peer for the time interval of three times the configured FEFD message interval, the interface state changes to unknown in Normal mode. In Aggressive mode, the interface state changes to err-disabled. If the interface state changes to err-disabled, use the fefd reset [interface] global command to reset these interfaces. The unknown or err-disabled state brings the line protocol down so that the protocols above it can detect that the peer link is down. Table 23. FEFD state changes Local event (User intervention ) Configured FEFD mode Local state (Show display) (Result) Local admin State (Result) Local line protocol Status (Result) Remote state (Show display) (Result) Remote Remote line admin state protocol status Shutdown(us Normal er configuration) Admin Shutdown Down Down Line protocol Up is down. Down Shutdown(us Aggressive er configuration) Admin Shutdown Down Down Line protocol Up is down. Down FEFD+ FEFD Normal Locally Up Up Unknown Up Down disable(user disabled configuration) FEFD + FEFD Aggressive Locally Up disable(user disabled configuration) Down Err-disabled Up Down Link Failure (Remove cable or transceiver) Normal Unknown Up Down Unknown Up Down Link Aggressive Unknown Up Failure(Remo ve cable or transceiver) Down Unknown Up Down FEFD Normal Bi-directional Up Up Bi-directional Up Up enable(user configuration) FEFD Aggressive Bi-directional Up Up Bi-directional Up Up enable(user configuration) Restrictions ● You can enable FEFD globally or on an interface. If FEFD is enabled globally, the FEFD interface configuration overrides global FEFD configuration. ● OS10 supports FEFD only on physical interfaces. FEFD is not supported on any other interfaces. However, you can enable FEFD on individual physical interfaces that belong to a port channel. Enable FEFD globally To configure FEFD globally: Layer 2 449
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