Port flap dampening configuration

Port Flap Dampening increases the resilience and availability of the network by limiting the number of port state transitions on an interface.

If the port link state toggles from up to down for a specified number of times within a specified period, the interface is physically disabled for the specified wait period. Once the wait period expires, the port link state is re-enabled. However, if the wait period is set to zero (0) seconds, the port link state will remain disabled until it is manually re-enabled.

In this section:

  1. Port flap dampening configuration notes
  2. Configuring port flap dampening on an interface
  3. Configuring port flap dampening on a trunk
  4. Re-enabling a port disabled by port flap dampening
  5. Displaying ports configured with port flap dampening
  6. Syslog messages for port flap dampening
Parent topic: Basic port parameter configuration