Configuring Storm Constrain; Overview; Setting The Traffic Statistics Generating Interval - HP 1910 User Manual

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Configuring storm constrain

Overview

The storm constrain function limits traffic of a port within a predefined upper threshold to suppress packet
storms in an Ethernet. With this function enabled on a port, the system detects the amount of broadcast
traffic, multicast traffic, and unknown unicast traffic reaching the port periodically. When a type of traffic
exceeds the threshold for it, the function, as configured, blocks or shuts down the port, and optionally,
sends trap messages and logs.
Alternatively, you can configure the storm suppression function to control a specific type of traffic. For
more information about the storm suppression function, see
suppression function and the storm constrain function are mutually exclusive, do not enable them at the
same time on an Ethernet port. For example, with unknown unicast storm suppression enabled on a port,
do not enable storm constrain for unknown unicast traffic on the port.
With storm constrain enabled on a port, you can specify the system to act as follows when a certain type
of traffic (broadcast, multicast, or unknown unicast) exceeds the upper threshold:
Block—Blocks the port. The port is blocked and stops forwarding the traffic of this type until the type
of traffic drops down below the lower threshold. A port blocked by the storm constrain function can
still forward other types of traffic and collect statistics for the blocked traffic.
Shutdown—Shuts down the port. The port is shut down and stops forwarding all types of traffic, and
cannot automatically restore even when the type of traffic drops down below the lower threshold. To
bring up the port, select Device > Port Management to configure the port (see
or cancel the storm constrain setting on the port.

Setting the traffic statistics generating interval

To set the traffic statistics generating interval:
Select Device > Storm Constrain from the navigation tree to enter the storm constrain configuration
1.
page.
In the Interval for generating traffic statistics field, enter the traffic statistics generating interval for
2.
storm constrain.
Click Apply.
3.
"Managing
50
ports." Because the storm
"Managing
ports"),

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