Storm-Control - Cisco Catalyst 2950 Command Reference Manual

Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands

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 [level-low]
level pps pps [pps-low]
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.
0L-10102-01
storm-control {{{broadcast | multicast | unicast} level {level [level-low] | pps pps [pps-low]}} |
action {shutdown | trap}}
no storm-control {{broadcast | multicast | unicast} level} | action}
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. The range is 0 to 100
percent. Block the flooding of storm packets when the value
specified for level is reached.
level-low—(Optional) Falling suppression level as a
•
percent of total bandwidth, up to two decimal places. The
range is 0 to 100. This value must be less than the rising
supression value.
Defines the rising and falling suppression levels in packets per
second. This option is supported only on non-Long-Reach
Ethernet (LRE) Catalyst 2950 switches.
pps—Rising suppression level. The range is 0 to
•
4294967295. Block the flooding of storm packets when the
value specified for pps is reached.
pps-low—(Optional) Falling suppression level. The range is
•
0 to 4294967295. This value must be equal to or less than
the rising supression value.
Action taken when a storm occurs on a port. The default action is
to filter traffic and to not send an Simple Network Management
Protocol (SNMP) trap.
The keywords have these meanings:
shutdown—Disables the port during a storm.
•
trap—Sends an SNMP trap when a storm occurs.
•
Catalyst 2950 and Catalyst 2955 Switch Command Reference
storm-control
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