Cisco Nexus 5000 Series Switch CLI Software Configuration Guide (OL-16597-01, July 2009)

• Specify the level as a percentage of the total interface bandwidth:
◦ The level can be from 0 to 100.
◦ The optional fraction of a level can be from 0 to 99.
◦ 100 percent means no traffic storm control.
◦ 0.0 percent suppresses all traffic.
Because of hardware limitations and the method by which packets of different sizes are counted, the level
percentage is an approximation. Depending on the sizes of the frames that make up the incoming traffic, the
actual enforced level might differ from the configured level by several percentage points.
Configuring Traffic Storm Control
You can set the percentage of total available bandwidth that the controlled traffic can use.
Traffic storm control uses a 10-microsecond interval that can affect the operation of traffic storm control.Note
Procedure
PurposeCommand or Action
Enters configuration mode.switch# configure terminal
Step 1
Enters interface configuration mode.
switch(config)# interface {ethernet slot/port |
port-channel number}
Step 2
Configures traffic storm control for traffic
on the interface. The default state is
disabled.
switch(config-if)# storm-control {broadcast |
multicast | unicast} level percentage[.fraction]
Step 3
This example shows how to configure unicast traffic storm control for Ethernet interface 1/4:
switch# configure terminal
switch(config)# interface ethernet 1/4
switch(config-if)# storm-control unicast level 40
Verifying Traffic Storm Control Configuration
To display traffic storm control configuration information, perform one of these tasks:
PurposeCommand
Displays the traffic storm control configuration for
the interfaces.
switch# show interface [ethernet slot/port |
port-channel number] counters storm-control
Traffic storm control uses a 10-microsecond
interval that can affect the operation of traffic
storm control.
Note
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
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Configuring Traffic Storm Control
Verifying Traffic Storm Control Configuration