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Use undo storm-constrain to disable storm control for broadcast, multicast, unknown unicast,
or all types of traffic.
Syntax
storm-constrain { broadcast | multicast | unicast } { pps | kbps | ratio }
upperlimit lowerlimit
undo storm-constrain { all | broadcast | multicast | unicast }
Default
Traffic storm control is disabled.
Views
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Parameters
all: Disables storm control for all types of traffic: broadcast, multicast, and unknown unicast.
broadcast
: Enables or disables broadcast storm control.
multicast: Enables or disables multicast storm control.
unicast
: Enables or disables unknown unicast storm control.
pps
: Sets storm control thresholds in pps.
kbps: Sets storm control thresholds in kbps.
ratio: Sets storm control thresholds as a percentage of the transmission capacity of the interface.
upperlimit: Sets the upper threshold, in pps, kbps, or percentage.
• If you specify the
pps keyword, the value range for the upperlimit argument is 0 to 1.4881
× the interface bandwidth.
• If you specify the
kbps keyword, the value range for the upperlimit argument is 0 to the
interface bandwidth.
• If you specify the
ratio keyword, the value range for the upperlimit argument is 0 to 100.
lowerlimit: Sets the lower threshold, in pps, kbps, or percentage.
• If you specify the
pps keyword, the value range for the lowerlimit argument is 0 to 1.4881
× the interface bandwidth.
• If you specify the
kbps keyword, the value range for the lowerlimit argument is 0 to the
interface bandwidth.
• If you specify the
ratio keyword, the value range for the lowerlimit argument is 0 to 100.
Usage guidelines
After you configure storm control for a type of traffic, the device collects the statistics for the type of
traffic at the interval configured by using the
storm-constrain interval command. When the
type of traffic exceeds its upper threshold, the interface takes an action configured by using the
storm-constrain control command.
The
storm-constrain, broadcast-suppression, multicast-suppression, and
unicast-suppression commands can suppress storms on an interface. The
broadcast-suppression, multicast-suppression, and unicast-suppression
commands use the chip to physically suppress traffic. They have less influence on the device
performance than the
storm-constrain command, which uses software to suppress traffic.
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