Administration Console Access 3-69
3.5.50 Main Menu->QoS->Rate Limiting
Use the Rate Limiting screen to configure the broadcast storm control to enable or disable traffic control in the networks.
Rate limiting, or storm control, prevents ports on the ES3000 switch from being overwhelmed by a broadcast, unicast, or multicast storm. A storm results when packets flood the LAN, which degrades network performance. With rate limiting enabled, the switch monitors incoming traffic by counting packets over a period of time. When the packet count exceeds a predefined threshold level, the switch suppresses traffic until the packet count drops below the threshold. With rate limiting disabled, all traffic is allowed. The switch supports rate limiting for broadcast, multicast, and unicast (DLF) traffic, keeping a separate count of the packets for each type of traffic. When broadcast or unicast traffic reaches the threshold, the switch suppresses further traffic of that type until traffic falls below the threshold. Broadcast, multicast and DLF traffic cannot be set on a per port basis, only on a
Select Broadcast Storm Control to display the Broadcast Storm Control Configuration Menu used configuring switch behavior during a broadcast storm. A loop in a network can disable the network by causing a Broadcast Storm. A Broadcast Storm is the result of a broadcast message traveling through the loop again and again.
