Reference Guide

766 | Layer 2
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Related
Commands
Command
History
fefd
e z
Enable Far-End Failure Detection on an interface, set the FEFD interval, or select the FEFD
mode.
Syntax
fefd {disable | interval | mode {aggressive | normal}}
Parameters
Defaults
Disabled.
Command Modes
INTERFACE
Usage
Information
When you enter no fefd for an interface and fefd-global, FEFD is enabled on the interface
because the no fefd command is not retained in the configuration file. To keep the interface
FEFD disabled when the global configuration changes, use the fefd reset command.
Related
Commands
Command
History
fefd Enable Far-End Failure Detection on an interface.
fefd reset Enable FEFD globally on the system.
Version 9.0.0.0 Introduced on Z9000
Version 8.3.12.0 Introduced on S4810.
Legacy E-Series command
disable Enter the keyword disable to disable FEFD for the specified interface.
interval Enter the keyword interval, followed by a value, to specify the FEFD interval in seconds.
Range: 3-300
Default: 15
mode Enter the keyword mode followed by the mode type to specify the FEFD mode
normal: Change the link state to “unknown” when a far-end failure is detected by the
software on that interface. When the interface is placed in “unknown” state, the software
brings down the line protocol.
aggressive: Change the link state to “error-disabled” when a far-end failure is detected by
the software on that interface. When an interface is placed in “error-disabled” state, you
must enter the fefd reset command to reset the interface state.
Range: aggressive or normal
Default: Normal.
fefd reset Enable FEFD globally on the system.
Version 9.0.0.0 Introduced on Z9000
Version 8.3.12.0 Introduced on S4810.
Legacy E-Series command