l is configured using the storm-control interface command: 3750(config-if)# storm-control ? action Action to take for storm-control broadcast Broadcast address storm control multicast Multicast address storm control unicast Unicast address storm control Storm control is available only on physical interfaces. While the com- mands are available on EtherChannel (port channel) interfaces, they are ignored if configured. Storm control has changed over the past few versions of IOS. Originally, the com- mands to implement this feature were switchport broadcast, switchport multicast, and switchport unicast. Older IOS versions and 3550 switches may still use these commands. Additionally, the latest releases of IOS allow for some newer features. One of the newer features is the ability to send an SNMP trap instead of shutting down the port. This can be configured with the storm-control action interface command: 3750(config-if)# storm-control action ? shutdown Shutdown this interface if a storm occurs Send SNMP trap if a storm occurs Storm Control Also, thresholds could originally only be set as percentages of the overall available bandwidth. Now, you have the option of configuring percentages, actual bits per sec- ond, or packets per second values. Each storm-control type (broadcast, multicast, and unicast) can be configured with any of these threshold types: 50(config-if)# storm-control broadcast level ? <0.00 - 100.00> Enter rising threshold Enter suppression level in bits per second Enter suppression level in packets per second A threshold (any type) of 0 indicates that no traffic of the configured type is allowed. A percentage threshold of 100 indicates that the con- figured type should never be blocked. When configuring bits per second or packets per second thresholds, you can specify a value either alone or with a metric suffix. The suffixes allowed are k, m, and g, for kilo, mega, and giga: 3750(config-if)# storm-control broadcast level bps ? <0.0 - 10000000000.0>[k|mlg] Enter rising threshold Another new feature is