Storm Control

storm-control {<broadcast | unreg-multicast | unknown-unicast> | all} {level <level> | { bits <bits> | bytes <bytes> | packets <packets> [k|m|g]}} [force]

no storm-control {<broadcast | unreg-multicast | unknown-unicast> | all}

The command enables Storm Control on selected interface.

The no form of the command disables Storm Control on selected interface.

Syntax Description

broadcast | unreg-multicast | unknown-unicast | all

• Each port can support broadcast, unregistered-multicast, unknown-unicast or all configurations

• All means one threshold level for all traffic types. It is identical to configuring broadcast, unregistered-multicast and unknown-unicast together.

level <level> | { bits <bits> | bytes <bytes> | packets <packets> [k|m|g]}

Storm control per traffic type may be configured with different thresholds:

• Level – specifies threshold value in percentages from interface speed

• Bits – specifies threshold value in bits per second. Must be specified with multiplier k, m, or g. Possible ranges: [1k...999k][1m...999m][1g...200g].

• Bytes – specifies threshold value in bytes per second. May be specified with multiplier k, m, or g. Possible ranges: [128...999][1k...999k][1m...999m][1g...25g].

• Packets – specifies threshold value in packets per second. May be specified with multiplier k, m, or g. Possible ranges: [1...999][1k...999k][1m...999m][1g...2g].

force

Resolves collisions and applies new configuration

Default

no storm control

Configuration Mode

config interface ethernet

config interface port-channel

config interface mlag-port-channel

History

3.6.4006

3.6.4110

Updated command syntax, default and configuration mode

3.6.6000

Added “config interface mlag port channel” configuration mode

3.7.0000

Added bits/bytes/packets threshold types

Example

switch (config interface ethernet 1/1) # storm-control broadcast bits 100 m
switch (config interface ethernet 1/1) # storm-control unknown-unicast level 50
switch (config interface ethernet 1/1) # storm-control unreg-multicast packets 900
switch (config interface ethernet 1/1) # storm-control all bytes 1 g

Related Commands

Notes

• The parameter “all” and other configurations are mutually exclusive

• Storm control can be configured on a LAG but cannot be configured on LAG members

• Storm control cannot be configured on router ports

• Storm control cannot be configured on a destination port in a monitoring session

• Units are in 10^n. The parameter “k” equals 1000 and not 1024.

show storm-control [<interface>]

The command displays the configuration levels and dropped packets for each traffic type.

Syntax Description

interface

• Displays configuration and dropped packets on specific interface

• If interface is not specified, displays configuration and dropped packets on all interfaces

Default

N/A

Configuration Mode

config

History

3.6.4006

3.6.4110

Updated example

3.7.1000

Updated example

Example

switch (config) # show storm-control

Interface Eth1/8:
 Broadcast                        : 10%
 Broadcast packets dropped        : 0
 Unreg-Mcast                      : N/A
 Unreg-Mcast packets dropped      : N/A
 Unkn-Ucast                       : N/A
 Unkn-Ucast packets dropped       : N/A
 All traffic types                : N/A
 All traffic types packets dropped: N/A

Related Commands

Notes