Dell N3200-ON EMC Networking N-Series Switches CLI Reference Guide version 6.7 - Page 1186

User Guidelines Multicast storm control applies to unknown multicast (i.e., multicast groups that are not control plane traffic and are not currently active on any interface). This is multicast traffic that normally is flooded in the VLAN. Multicast storm control can issue a trap and drop traffic in excess of the configured rate (level), or shut down the ingress port if the rate is exceeded. Multicast storm control can only be enabled on Ethernet interfaces. It cannot be configured on port channels. Setting the level, rate or action does not enable multicast storm control. Issue the storm-control multicast command separately to enable multicast storm control. Either the level or the rate threshold may be configured, but not both. Either the trap action or the shutdown action may be specified, but not both. The trap action issues a log message (WARNING) and a trap when the configured threshold is exceeded. Traffic exceeding the threshold is dropped. The shutdown action shuts down the interface, puts the interface into the Ddisable state, issues a log message and a trap. The operator may bring the port back into service using the no shutdown command. Use the show storm-control action and show storm-control all commands to display the storm control settings. Example The following example configures any port to shut down if the received multicast traffic rate exceeds 20% of link bandwidth: console(config)#interface range gi1/0/1-24 console(config-if)#storm-control multicast level 20 console(config-if)#storm-control multicast action shutdown console(config-if)#exit storm-control unicast Use the storm-control unicast command in Interface Configuration mode to enable storm control for an interface. Unicast storm control limits the number of unicast destination lookup failures (DLFs). Use the no form of the command to disable unicast storm control or to return the configuration to the default. Security Commands 1186