HP A3100-8 v2 SI Configuration Manual page 15

To do...
Set a multicast suppression
threshold
Set a unicast suppression
threshold
NOTE:
If you set a storm suppression threshold in both Ethernet interface view and port group view, the one
configured last takes effect.
Configuring storm control on an Ethernet Interface
Storm control compares broadcast, multicast, and unknown unicast traffic regularly with their respective
traffic thresholds on an Ethernet interface. For each type of traffic, storm control provides a lower
threshold and a higher threshold.
For management purposes, you can configure the interface to send threshold event traps and log
messages when monitored traffic exceeds the upper threshold or falls below the lower threshold from the
upper threshold.
When the traffic on an interface exceeds its higher threshold, the switch does either of the following
actions, depending on your configuration:
• Blocking the particular type of traffic and forwarding other types of traffic. Even though the interface
does not forward the blocked traffic, it still counts the traffic. When the blocked traffic is detected
dropping below the threshold, the interface begins to forward the traffic.
Shutting down the interface automatically. The interface is shut down automatically and stops
•
forwarding any traffic. To bring up the interface, use the undo shutdown command or disable the
storm control function.
Follow these steps to configure the storm control function on an Ethernet interface:
To do...
Enter system view
Set the traffic polling interval of the
storm control module
Enter Ethernet interface view
Enable storm control, and set the
lower and upper thresholds for
broadcast, multicast, or unknown
unicast traffic
Set the control action to take when
monitored traffic exceeds the
upper threshold
Use the command...
multicast-suppression { ratio | pps
max-pps | kbps max-bps }
unicast-suppression { ratio | pps
max-pps | kbps max-bps }
Use the command...
system-view
storm-constrain interval seconds
interface interface-type
interface-number
storm-constrain { broadcast |
multicast | unicast } pps
max-pps-values min-pps-values
storm-constrain control { block |
shutdown }
8
Remarks
Optional
By default, all multicast traffic is
allowed to pass through an
interface.
Optional
By default, all unknown unicast
traffic is allowed to pass through
an interface.
Remarks
—
Optional
10 seconds by default.
—
Required
Disabled by default.
Optional
Disabled by default.