Storm-Control - Cisco Catalyst 2950 Command Reference Manual

storm-control

storm-control
Use the storm-control interface configuration command 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 no form of this
command to disable storm control for broadcast, multicast, or unicast traffic and disable the specified
storm-control action.
Syntax Description {broadcast | multicast | unicast} Determines the type of packet-storm suppression.
level level [lower level]
action
shutdown
trap
Defaults Broadcast, multicast, and unicast storm control are disabled.
The default action is to filter traffic and to not send an SNMP trap.
Command Modes
Interface configuration
Command History Release
12.1(6)EA2
Catalyst 2950 Desktop Switch Command Reference
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storm-control {{{broadcast | multicast | unicast} level level [lower level]} | action {shutdown |
trap}}
no storm-control {{broadcast | multicast | unicast} level} | action}
Modification
This command was first introduced. It replaced port storm-control
command.
• broadcast—Enable broadcast storm control on the port.
• multicast—Enable multicast storm control on the port.
• unicast—Enable unicast storm control on the port.
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 supression value.
Action taken when a storm occurs on a port. The default action is
to filter traffic and not send an Simple Network Management
Protocol (SNMP) trap.
Disables the port during a storm.
Sends an SNMP trap when a storm occurs.
Chapter 2 Cisco IOS Commands
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