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2-28
Setting Broadcast Storm Thresholds
Broadcast storms may occur when a device on your network is
malfunctioning, or if application programs are not well designed or
properly configured. If there is too much broadcast traffic on your
network, performance can be severely degraded or everything can come to
complete halt.
You can protect your network from broadcast storms by setting a
threshold for broadcast traffic for each port. Any broadcast packets
exceeding the specified threshold will then be dropped.
Command Usage
• Default is enabled for all ports. Threshold: 500 packets per second
• Broadcast control does not effect IP multicast traffic.
Web – Click Port/Port Broadcast Control. Set the threshold for all ports
(range 500-262143 pps), and then click “Apply.”
CLI – Specify the required interface, and then enter the threshold. The
following sets broadcast suppression at 600 packets per second on port 1.
Console(config)#interface ethernet 1/1 3-68
Console(config-if)#switchport broadcast packet-rate 600 3-74
Console(config-if)#