Technical data

62 FastIron Ethernet Switch Administration Guide
53-1002637-02
Basic port parameter configuration
2
Re-enabling a port disabled by port flap dampening
A port disabled by port flap dampening is automatically re-enabled once the wait period expires;
however, if the wait period is set to zero (0) seconds, you must re-enable the port by entering the
following command on the disabled port.
Brocade(config)# interface ethernet 2/1
Brocade(config-if-e10000-2/1)# no link-error-disable 10 3 10
Displaying ports configured with port flap dampening
Ports that have been disabled due to the port flap dampening feature are identified in the output of
the show link-error-disable command. The following shows an example output.
Use the show link-error-disable all command to display the ports with the port flap dampening
feature enabled.
For FastIron Stackable devices, the output of the command shows the following.
For FastIron X Series devices, the output of the command shows the following.
Table 11 defines the port flap dampening statistics displayed by the show link-error-disable all
command.
TABLE 11 Output of show link-error-disable
Column Description
Port # The port number.
Threshold The number of times the port link state will go from up to down and
down to up before the wait period is activated.
Sampling-Time The number of seconds during which the specified toggle threshold can
occur before the wait period is activated.
Brocade# show link-error-disable
Port 2/1 is forced down by link-error-disable.
Brocade# show link-error-disable all
Port8/1 is configured for link-error-disable
threshold:1, sampling_period:10, waiting_period:0
Port8/2 is configured for link-error-disable
threshold:1, sampling_period:10, waiting_period:0
Port8/3 is configured for link-error-disable
threshold:1, sampling_period:10, waiting_period:0
Port8/4 is configured for link-error-disable
threshold:1, sampling_period:10, waiting_period:0
Port8/5 is configured for link-error-disable
threshold:4, sampling_period:10, waiting_period:2
Port8/9 is configured for link-error-disable
threshold:2, sampling_period:20, waiting_period:0
Brocade# show link-error-disable all
Port -----------------Config--------------- ------Oper----
# Threshold Sampling-Time Shutoff-Time State Counter
----- --------- ------------- ------------ ----- -------
11 3 120 600 Idle N/A
12 3 120 500 Down 424