Alarm Facility Fcs-Hysteresis - Cisco Catalyst 2950 Command Reference Manual

alarm facility fcs-hysteresis

alarm facility fcs-hysteresis
Use the alarm facility fcs-hysteresis global configuration command to set the frame check sequence
(FCS) error hysteresis threshold as a percentage of fluctuation from the FCS bit error rate. Use the no
form of this command to set the FCS error hysteresis threshold to its default value.
Syntax Description
percentage
Defaults
The default threshold-value is 10 percent.
Command Modes Global configuration
Command History Release
12.1(12c)EA1
Usage Guidelines Set a hysteresis threshold to prevent an alarm from triggering when the FCS bit error rate fluctuates near
the configured bit error rate.
You set the FCS hysteresis threshold for all ports on the switch; you set the FCS error rate on a per-port
basis by using the fcs-threshold interface configuration command.
If the threshold is not the default, it appears in the output of the show running-config privileged EXEC
command.
Examples
This example shows how to set the FCS error hysteresis to 5 percent. The alarm is not triggered unless
the bit error rate is more than 5 percent from the configured FCS bit error rate.
Switch(config)# alarm facility fcs-hysteresis 5
Related Commands Command
fcs-threshold
show running-config
Catalyst 2950 and Catalyst 2955 Switch Command Reference
A-2
alarm facility fcs-hysteresis percentage
no alarm facility fcs-hysteresis percentage
Hysteresis threshold fluctuation. The range is 1 to 10 percent.
Modification
This command was introduced.
Description
Sets an FCS error rate for an interface.
Displays the running configuration on the switch, including FCS hysteresis
threshold if it is not set at the default. For syntax information, see the Cisco
IOS Configuration Fundamentals Command Reference for Release 12.1 >
Cisco IOS File Management Commands > Configuration File Commands.
Appendix A Catalyst 2955 Alarm Commands
OL-10102-01