4000 Router Series Interface Command Reference

Default

Ethernet interfaces do not suppress unicast traffic.

Views

Layer 2 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 the argument is 1 to 1488100 on a 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.

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 Ethernet 1/1.

<Sysname> system-view

[Sysname] interface ethernet 1/1

[Sysname-Ethernet1/1] unicast-suppression kbps 10000

Related commands

• broadcast-suppression

• multicast-suppression

Layer 3 Ethernet interface or subinterface

commands

mac-address

Use mac-address to configure the MAC address of an Ethernet interface.

Use undo mac-address to restore the default.