Disabling Unknown Unicast Traffic Suppression

Context

By default, if MAC address flapping detection is enabled on a device and MAC address flapping is detected, traffic suppression is triggered on the corresponding interface. As a result, excess traffic is discarded, resulting in packet loss.

To prevent this, disable unknown unicast traffic suppression.

Procedure

Globally disabling unknown unicast traffic suppression
1. Run system-view
  
  The system view is displayed.
2. Run mac-address flapping unicast-suppress all disable
  
  Unknown unicast traffic suppression is disabled globally.
  
  By default, unknown unicast traffic suppression is enabled globally.
Disabling unknown unicast traffic suppression on an interface
1. Run system-view
  
  The system view is displayed.
2. Run interface interface-type interface-number
  
  The interface view is displayed.
3. Run mac-address flapping unicast-suppress disable
  
  Unknown unicast traffic suppression is disabled on the interface.
  
  By default, unknown unicast traffic suppression is enabled on an interface.
  Unknown unicast traffic suppression takes effect on an interface only when the following conditions are met:
  Global MAC address flapping detection is configured.
  MAC address flapping occurs on the interface.
  Unknown unicast traffic suppression is enabled globally.
  Unknown unicast traffic suppression is enabled on the interface.