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 256 packets per second.
> Broadcast control does not effect IP multicast traffic.
Web – Click Port/Port Broadcast Control. Set the threshold for all ports (16, 64,
128, or 256 pps), and then click “Apply.”
CLI – Specify the required interface, and then enter the threshold. The following
sets broadcast suppression at 128 packets per second on port 1.
Console(config)#interface ethernet 1/1
3-68
Console(config-if)#switchport broadcast packet-rate 128
3-74
Console(config-if)#
47
