Configuring Storm Control on an Ethernet Interface

You can control a broadcast, unknown unicast, and multicast (BUM) traffic storm by limiting the inbound traffic on an interface.

1. Enter global configuration mode.
   

   device# configure terminal
   

2. Specify the Ethernet interface for the traffic you want to control.
   

   device(config)# interface ethernet 2/2
   

3. Specify a traffic limit for broadcast traffic on the interface.
   

   device(conf-if-eth-2/2)# storm-control ingress broadcast limit-bps 400000
   

   This example controls the inbound broadcast traffic, limiting the rate to 400000 bits per second (bps).

4. Specify a traffic limit for unknown-unicast traffic on the interface.
   

   device(conf-if-eth-2/2)# storm-control ingress unknown-unicast limit-bps 50000000
   

   This example controls the inbound unknown-unicast traffic, limiting the rate to 50000000 bps.
5. Specify a traffic limit for multicast traffic on the interface.
   

   device(conf-if-eth-2/2)# storm-control ingress multicast limit-percent 3   
   

   This example controls the inbound multicast traffic, limiting the rate to 3% of traffic.
6. Return to privileged EXEC mode.
   

   device(conf-if-eth-2/2)# end
   

7. Verify the storm control configuration.
   

   device# show running-config interface ethernet 2/2 | include storm-control
    storm-control ingress broadcast limit-bps 400000 
    storm-control ingress multicast limit-percent 3 
    storm-control ingress unknown-unicast limit-bps 50000000 
   

8. Save the configuration.
   

   device# save running-config startup-config