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47-1
Chapter 47: Broadcast Storm Control
Commands
These commands can be used to enable broadcast storm control on a port. 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.
switchport broadcast packet-rate
This command configures broadcast storm control. Use the no form to disable
broadcast storm control.
Syntax
switchport broadcast packet-rate rate
no switchport broadcast
rate - Threshold level as a rate; i.e., packets per second.
(Range: 500-262143)
Default Setting
Enabled for all ports
Packet-rate limit: 500 pps
Command Mode
Interface Configuration (Ethernet)
Command Usage
• When broadcast traffic exceeds the specified threshold, packets above that
threshold are dropped.
• Broadcast control does not effect IP multicast traffic.
Example
The following shows how to configure broadcast storm control at 600 packets per
second:
Table 47-1 Broadcast Storm Control Commands
Command Function Mode Page
switchport broadcast
packet-rate
Configures the broadcast storm control threshold IC 47-1
show interfaces status Displays status for the specified interface NE, PE 45-8
Console(config)#interface ethernet 1/5
Console(config-if)#switchport broadcast packet-rate 600
Console(config-if)#