Reference Guide

Version 9.0.2.0 Introduced on the S6000.
Version
8.3.19.0
Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version
8.3.12.0
Introduced on the S4810.
Legacy E-
Series
command.
Related
Commands
• fefd — enables far-end failure detection on an interface.
• fefd reset — enables FEFD globally on the system.
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.
1290
Layer 2