CLI Guide

fefd
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
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 is from 3 to 300. Default is 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 an “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 an
“error-disabled” state, you must enter the fefd reset command to reset the
interface state. Range is normal or aggressive. Default is normal.
Defaults Disabled.
Command Modes INTERFACE
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100–ON.
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.12.0 Introduced on the S4810.
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
● fefd disable — disable far-end failure detection on an interface.
● fefd reset — enable FEFD globally on the system.
● fefd mode — change FEFD mode on an interface.
fefd disable
Disable FEFD on an interface only. This command overrides the fefd reset command for the interface.
Syntax
fefd disable
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