3Com MSR 30, MSR 50 manual Unicast-suppression, Virtual-cable-test, Syntax virtual-cable-test

184CHAPTER 9: CONFIGURATION COMMANDS FOR ETHERNET INTERFACES IN BRIDGE MODE

unicast-suppression

Syntax unicast-suppression { ratio pps max-pps}

undo unicast-suppression

View Ethernet interface view, port group view

Parameter ratio: Maximal ratio of unicast traffic to the total transmission capability of an Ethernet interface, in the range of 1 to 100. The smaller the ratio is, the less unicast traffic is allowed through the interface.

pps max-pps: Specifies the maximal number of unknown unicast packets passing through an Ethernet interface per second. The max-ppsargument ranges from 1 to 148,810, in pps, representing packets per second.

Description Use the unicast-suppressioncommand to configure a unicast storm suppression ratio.

n

Example

Use the undo unicast-suppressioncommand to restore the default unicast suppression ratio.

By default, all unicast traffic is allowed to go through an Ethernet interface, that is, unicast traffic is not suppressed.

If you execute this command in Ethernet interface view, the configuration takes effect only on the current interface. If you execute this command in port group view, the configuration takes effect on all ports in the port group.

Note that when unicast traffic exceeds the maximum value configured, the system will discard the extra packets so that the unknown unicast traffic ratio can drop below the limit to ensure that the network functions properly.

Currently, these two commands are not supported.

#Allow unicast traffic equivalent to 20% of the total transmission capability of the interface to pass through Ethernet 1/0 and suppress the excessive unknown unicast packets.

<Sysname> system-view

[Sysname] interface ethernet 1/0

[Sysname-Ethernet1/0] unicast-suppression 20

virtual-cable-test

Syntax virtual-cable-test

View Ethernet interface view