Brocade Communications Systems 6650 manual Configuring port flap dampening on an interface

Basic port parameter configuration 2

Configuring port flap dampening on an interface

This feature is configured at the interface level.

Brocade(config)# interface ethernet 1/1/1

Brocade(config-if-e10000-1/1/1)# link-error-disable 10 3 10

Syntax: [no] link-error-disable<toggle-threshold> <sampling-time-in-sec> <wait-time-in-sec>

The <toggle-threshold>is the number of times a port link state goes from up to down and down to up before the wait period is activated. Enter a value from 1 - 50.

The <sampling-time-in-sec>is the amount of time during which the specified toggle threshold can occur before the wait period is activated. The default is 0 seconds. Enter 1 – 65535 seconds.

The <wait-time-in-sec>is the amount of time the port remains disabled (down) before it becomes enabled. Enter a value from 0 – 65535 seconds; 0 indicates that the port will stay down until an administrative override occurs.

Configuring port flap dampening on a trunk

You can configure the port flap dampening feature on the primary port of a trunk using the link-error-disablecommand. Once configured on the primary port, the feature is enabled on all ports that are members of the trunk. You cannot configure port flap dampening on port members of the trunk.

Enter commands such as the following on the primary port of a trunk.

Brocade(config)# interface ethernet 1/1/3

Brocade(config-if-e10000-1/1/3)# link-error-disable 10 3 10

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 1/1/3 Brocade(config-if-e10000-1/1/3)# 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-disablecommand. The following shows an example output.

Brocade# show link-error-disable

Port 1/1/3 is forced down by link-error-disable.

Use the show link-error-disable all command to display the ports with the port flap dampening feature enabled.

Brocade ICX 6650 Administration Guide	41
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