Cabletron Systems CSX400, CSX200 manual Configuring Broadcast Suppression, 4-82, Bridging

Bridging

Configuring Broadcast Suppression

Excessive broadcasts to all ports, or broadcast storms, can result in severe network performance problems, and possibly cause the network to crash. Devices which support the broadcast suppression feature provide automatic protection against broadcast/multicast storms.

In many ways, broadcast suppression is similar to Þltering. To protect against storms, an acceptable rate for broadcast trafÞc across a port is deÞned. Ports which reach this user-deÞned threshold will be throttled, and an SNMP trap message will be sent to the network management station.

To access the Broadcast Suppression window:

1.Click on the Device menu from the Chassis View window of the selected device.

2.Drag down to select Broadcast Suppression…. The Broadcast Suppression window, Figure 4-25, will appear.

Figure 4-25. The Broadcast Suppression Window

In the Broadcast Suppression Window, each interface of the device that is being monitored can be individually conÞgured for automatic broadcast/multicast storm protection.

You can also deÞne what level of broadcasts the device will recognize as a broadcast storm by specifying the number of broadcast packets that can be transmitted within a given time period.

4-82 Configuring Broadcast Suppression