16- and 36-Port Ethernet Switch Module for Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series
storm-control
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Cisco IOS Release 12.2(2)XT, 12.2(8)T, and 12.2(15)ZJ
storm-control
To enable broadcast, multicast, or unicast storm control on a port and to specify the action taken when
a storm occurs on a port, use the storm-control command in interface configuration mode. To disable
storm control for broadcast, multicast, or unicast traffic and disable the specified storm-control action,
use the no form of this command.
storm-control {{{broadcast | multicast | unicast} level level [lower-level]} | action shutdown}
no storm-control {{broadcast | multicast | unicast} level} | action}
Syntax Description
Defaults
Broadcast, multicast, and unicast storm control are disabled.
The default action is to filter traffic.
Command Modes
Interface configuration
Command History
{broadcast | multicast | unicast} Determines the type of packet-storm suppression.
•
broadcast—Enable broadcast storm control on the port.
•
multicast—Enable multicast storm control on the port.
•
unicast—Enable unicast storm control on the port.
level level [lower-level]
Defines the rising and falling suppression levels.
•
level—Rising suppression level as a percent of total
bandwidth, up to two decimal places; valid values are from 0
to 100 percent. Block the flooding of storm packets when the
value specified for level is reached.
•
lower level—(Optional) Falling suppression level as a
percent of total bandwidth, up to two decimal places; valid
values are from 0 to 100. This value must be less than the
rising suppression value.
action
Action taken when a storm occurs on a port. The default action is
to filter traffic.
shutdown
Disables the port during a storm.
Release
Modification
12.1(6)EA2
This command was introduced. It replaced the port storm-control
command.
12.2(15)ZJ
This command was implemented on the Cisco 2600 series,
Cisco 3600 series, and Cisco 3700 series routers.
