3com S7906E Guide De Référence
1-34
the one that actually takes effect. To display the actual broadcast suppression threshold value on
an Ethernet interface, you can use the display interface command.
z
When no suppression granularity is specified or the suppression granularity is set to 1, the value of
the pps or keyword should be no smaller than 1, and the broadcast suppression threshold value is
the one that actually takes effect on the Ethernet interface.
Description
Use the unicast-suppression command to configure a unicast storm suppression ratio.
Use the undo unicast-suppression command 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, the configurations take effect only on the current
interface. If you execute this command in port-group view, the configurations take 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.
z
If you set different suppression ratios in Ethernet interface view or port-group view repeatedly, the
latest configuration takes effect.
z
Do not use the unicast-suppression command along with the storm-constrain command.
Otherwise, the unicast storm suppression ratio configured may get invalid.
z
On an Ethernet port enabled with unicast storm suppression ratio, this feature takes effect only in
the inbound direction.
Examples
# For Ethernet interface Ethernet 2/0/1, allow unknown unicast traffic equivalent to 20% of the total
transmission capability of the interface to pass and suppress the excessive unknown unicast packets.
<Sysname> system-view
[Sysname] interface ethernet 2/0/1
[Sysname-Ethernet2/0/1] unicast-suppression 20
# For all the ports of the manual port group group1, allow unknown unicast traffic equivalent to 20% of
the total transmission capability of each port to pass and suppress excessive unknown unicast packets.
<Sysname> system-view
[Sysname] port-group manual group1
[Sysname-port-group-manual-group1] group-member ethernet 2/0/1
[Sysname-port-group-manual-group1] group-member ethernet 2/0/2
[Sysname-port-group-manual-group1] unicast-suppression 20