Filter
Top Products
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 per-switch basis.
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.