Cisco Systems N3KC3064TFAL3, N3KC3048TP1GE manual Configuring Traffic Storm Control

Configuring Traffic Storm Control

Configuring Traffic Storm Control

•You can configure traffic storm control on a port-channel interface.

•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.

•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.

•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.

•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.

Note Traffic storm control uses a 10-microsecond interval that can affect the operation of traffic storm control.

Procedure

	Command or Action	Purpose
Step 1	switch# configure terminal	Enters configuration mode.
Step 2	switch(config)# interface {ethernet slot/port	Enters interface configuration mode.
	port-channel number}
Step 3	switch(config-if)#storm-control {broadcast	Configures traffic storm control for traffic
	multicast unicast} level percentage[.fraction]	on the interface. The default state is
		disabled.

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)

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