Storm-control broadcast level command
As configured the switch will drop broadcast traffic when the level of broadcast received on the interface reaches 10 of the operational link speed. In addition it will send an SNMP trap to indicate storm control threshold has been exceeded and that traffic is being dropped.Understanding Cisco Traffic Storm Control. Well, the manual says Traffic storm control (also called traffic suppression) allows you to monitor the levels of the incoming broadcast, multicast, and unicast traffic over a 1second interval. During this interval, the traffic level, which is a percentage of the total available bandwidth of the port, storm-control broadcast level command
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Cisco StormControl Configuration. One security issue that has to do with flooding is called a broadcast storm. When we have an excessive amount of broadcast traffic on the network then all devices within the broadcast domain will suffer. The switch has to flood all broadcast frames to Storm Control. The command stormcontrol broadcast level 75 65 limits the broadcast traffic up to 75 of the bandwidth (75 is called the rising threshold). The port will start forwarding broadcast traffic again when it drops below 65 of the bandwidth (65 is called the falling threshold). Note: If you dont configure the falling threshold,storm-control broadcast level command The first command stormcontrol broadcast is the only required command. The stormcontrol action trap command is optional, as is shutting down the port, which requires the stormcontrol action shutdown command. This example has nothing to do with regular unicast or multicast traffic.