user manual

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You can configure traffic storm control on a port-channel interface.
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Specify the level as a percentage of the total interface bandwidth:
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The level can be from 0 to 100.
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The optional fraction of a level can be from 0 to 99.
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100 percent means no traffic storm control.
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0.0 percent suppresses all traffic.
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There are local link and hardware limitations that prevent storm-control drops from being counted
separately. Instead, storm-control drops are counted with other drops in the indiscards counter.
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Multicast-storm control configuration does not apply on mutlicast data packets with a link-local destination
MAC address of 01-00-5e-00-00-xx.
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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
Cisco Nexus 3000 NX-OS Layer 2 Switching Configuration Guide, Release 5.0(3)U3(1)
OL-26590-01 145
Configuring Traffic Storm Control
Configuring Traffic Storm Control