Unicast-Suppression - HP 6125XLG Command Reference Manual

storm-constrain control
•

unicast-suppression

Use unicast-suppression to enable unicast storm suppression and set the unicast storm suppression
threshold.
Use undo unicast-suppression to restore the default.
Syntax
unicast-suppression { ratio | pps max-pps | kbps max-kbps }
undo unicast-suppression
Default
Ethernet interfaces do not suppress unicast traffic.
Views
Ethernet interface view
Predefined user roles
network-admin
Parameters
ratio: Sets the unicast suppression threshold as a percentage of the maximum interface rate. The value
range for this argument (in percentage) is 0 to 100. The smaller the percentage, the less unicast traffic is
allowed to pass through.
pps max-pps: Specifies the maximum number of unicast packets that the interface can forward per
second. The value range for the max-pps argument (in pps) is 1 to 1.4881 × the maximum interface rate.
For example, the value range for this argument is 1 to 1488100 on a GE interface and 1 to 59524000
on a 40-GE interface.
kbps max-kbps: Specifies the maximum number of kilobits of unicast traffic that the Ethernet interface can
forward per second. The value range for this argument (in kbps) is 1 to the maximum interface rate.
Usage guidelines
You can use the unicast storm suppression function to limit the size of unicast traffic on an interface. When
the unicast traffic on the interface exceeds this threshold, the system discards packets until the unicast
traffic drops below this threshold.
Both the storm-constrain and unicast-suppression can suppress unicast storm on a port. The
storm-constrain command uses software to suppress unicast traffic, and it affects the device performance
to a certain extent. The unicast-suppression command use the chip to physically suppress unicast traffic,
and it has less influence on the device performance than the storm-constrain command. Do not configure
the storm constrain command and the unicast-suppression command on a port. Otherwise, the unicast
traffic suppression result is not determined.
When you configure the suppression threshold in pps or kbps, the device might convert the configured
value into a multiple of a certain step supported by the chip. As a result, the actual suppression threshold
might be different from the configured one. To determine the suppression threshold that takes effect, see
the prompts on the device.
Examples
# Set the unicast storm suppression threshold to 10000 kbps on Ten-GigabitEthernet 1/1/5.
32