HP 1910 User Manual page 113

Table 19 Configuration items
Item
Control Mode
Broadcast Threshold
Multicast Threshold
Unicast Threshold
Trap
Log
Select ports
Remarks
Specify the action to be performed when a type of traffic exceeds the upper
threshold. Available options include:
•
None—Performs no action.
•
Block—Blocks the traffic of this type on a port when the type of traffic exceeds the
upper threshold.
•
Shutdown—Shuts down the port when a type of traffic exceeds the traffic
threshold. The port stops forwarding traffic as a result.
NOTE:
The storm constrain function, after being enabled, requires a full traffic statistics
generating interval (in seconds) to collect traffic data, and analyzes the data in the next
interval. It is normal that a period longer than one traffic statistics generating interval is
waited for a control action to happen if you enable the function when the packet storm
is present. Nevertheless, the action will be taken within two intervals.
Set the broadcast, multicast, and unknown unicast thresholds.
•
None—Performs no storm constrain for the selected port or ports.
•
pps—Specifies the storm constrain upper threshold and lower threshold in packets
per second (pps).
•
ratio—Specifies the storm constrain upper threshold and lower threshold in
percentage of received packets to the transmission capability of each selected
port.
•
kbps—Specifies the storm constrain upper threshold and lower threshold in
kilobits per second (kbps).
NOTE:
•
On a port, you can set the thresholds for broadcast, multicast, and unknown
unicast traffic at the same time. To set storm constrain on a port successfully, you
must specify the thresholds for at least a type of traffic.
•
When the pps option is selected, the upper threshold and lower threshold ranges
depend on the interface type, as shown in the pps range description on the page.
Select or clear the box to enable or disable the system to send trap messages both
when an upper threshold is crossed and when the lower threshold is crossed after
that.
Select or clear the box to enable or disable the system to output logs both when an
upper threshold is crossed and when the lower threshold is crossed after that.
Select ports from the chassis front panel to apply the storm constrain settings to them.
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