Storm-Control - Cisco Catalyst 3550 Command Reference Manual

Chapter 2 Catalyst 3550 Switch Cisco IOS Commands

storm-control

Use the storm-control interface configuration command to configure broadcast, multicast, or unicast
storm control with a specific suppression-level threshold on an interface. Use the no form of this
command to return to the default setting.
Syntax Description broadcast
multicast
unicast
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.
Command Modes Interface configuration
OL-8566-01
storm-control {{broadcast | multicast | unicast} level {level [level-low] | pps pps [pps-low]}} |
{action {shutdown | trap}}
no storm-control {{broadcast | multicast | unicast} level} | {action {shutdown | trap}}
Enable broadcast storm control on the interface.
Enable multicast storm control on the interface.
Enable unicast storm control on the interface.
Specify the rising and falling suppression levels as a percentage of total bandwidth
of the port.
level—Rising suppression level, up to two decimal places. The range is 0.00
•
to 100.00. Block the flooding of storm packets when the value specified for
level is reached.
level-low—(Optional) Falling suppression level, up to two decimal places.
•
The range is 0.00 to 100.00. This value must be less than or equal to the rising
suppression value. If you do not configure a falling suppression level, it is set to
the rising suppression level.
Specify the rising and falling suppression levels as a rate in packets per second at
which traffic is received on the port.
pps—Rising suppression level, up to 1 decimal place. The range is 0.0 to
•
10000000000.0. Block the flooding of storm packets when the value specified
for pps is reached.
• pps-low—(Optional) Falling suppression level, up to 1 decimal place. The
range is 0.0 to 10000000000.0. This value must be equal to or less than the
rising suppression value.
You can use metric suffixes such as k, m, and g for large number thresholds.
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 3550 Multilayer Switch Command Reference
storm-control
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