ccna 8.2.1.4

ccna 8.2.1.4.For small data frames, the traffic rate (packets/s). This feature is globally enabled. The threshold value used for small data frames is configured on a per-interface basis.Using either method, the port blocks traffic when it reaches a predetermined upper limit value. And the port stays in the blocking state until the traffic rate falls below the lower limit value (if a lower limit value is specified), then it returns to the normal forwarding state. If the lower limit value is not specified, the switch blocks all traffic until the traffic rate falls below the upper limit value. The threshold value, or inhibit level, is the number of packets allowed before the action is taken. In general, the higher the suppression level, the less efficient the defense against broadcast storms.Use the interface configuration mode command storm-control to enable storm control on an interface and to set the threshold value for each traffic type. The storm control suppression level can be configured as a percentage of the total port bandwidth, the rate at which the traffic is received (packets/second or bit/s) o6.3.4.2 Configuration of Storm ControlWhen specifying the suppression level for traffic using a percentage of the total bandwidth (up to two decimal places), this level can range from 0.00.100.00. A threshold value of 100% means that the specified traffic type (e.g., broadcast, multicast, or unicast) has noThere are no restrictions. A value of 0.0, on the other hand, means that all broadcast, multicast, or unicast traffic on this end 11 is blocked. The percentage threshold value is an estimate due to hardware limitations and the different packet sizes being counted. Depending on the size of the packets entering the traffic, the actual threshold value performed may be slightly different from the configured level.Physical interfaces can support storm control. Using CiscoIOS Release 12.2(25) or later, storm control can also be configured on an Ethernet channel (EtherChannel). When storm control is configured on an Ethernet channel, the settings for storm control are propagated to the physical interface of the Ethernet channel.storm-control ({broadcast | multicast | unicast} level {level [level~low] | bps6.3 Configuring Layer 2 Security 167bps [bDS-low] I pps DDS [DDS-IOW]}} I {action (shutdown I trap})