3Com Switch 4800G 24-Port - Page 151

Ethernet Port Configuration 151
Follow these steps to configure manual port group:
n
For more information, refer to “Aggregation Port Group” on page 166.
Configuring the
Broadcast/Multicast/Unk
nown Unicast Storm
Suppression Ratio for an
Ethernet Port
You can use the following commands to suppress the broadcast, multicast, and
unknown unicast traffic. In port configuration mode, the suppression ratio
indicates the maximum broadcast, multicast, or unknown unicast traffic that is
allowed to pass through a port. When the broadcast, multicast, or unknown
unicast traffic passing the port exceeds the threshold, the system will discard the
extra packets so that the broadcast, multicast, or unknown unicast traffic ratio can
drop below the limit to ensure that the network functions properly.
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The storm suppression ratio settings configured for an Ethernet port may get
invalid if you configure a traffic threshold for the port using the storm-constrain
command.
Follow these steps to set the broadcast/multicast/unknown unicast storm
suppression ratios:
To do… Use the command… Remarks
Enter system view system-view -
Enter port
group view
Enter manual port group
view
port-group manual
port-group-name
-
Enter aggregation port group
view
port-group
aggregation agg-id
-
To do… Use the command… Remarks
Enter system view system-view -
Create a manual port group
and enter manual port group
view
port-group manual
port-group-name
Required
Add Ethernet ports to the
manual port group
group-member interface-list Required
To do… Use the command… Remarks
Enter system view system-view -
Enter Ethernet
port view or
port group
view
Enter Ethernet
port view
interface interface-type
interface-number
Either is required.
If configured in Ethernet port
view, this feature takes effect
on the current port only; if
configured in port group
view, this feature takes effect
on all the ports in the port
group.
Enter port
group view
port-group { manual
port-group-name |
aggregation agg-id }
Configure broadcast storm
suppression ratio
broadcast-suppression
{ ratio | pps max-pps }
Optional
By default, all broadcast
traffic is allowed to pass
through a port, that is,
broadcast traffic is not
suppressed.