Configuring A Port Group; Configuring Traffic Storm Protection - HP A5120 EI Series Configuration Manual

NOTE:

On an interface that is physically down, you can only perform internal loopback testing. On an interface
administratively shut down, you can perform neither internal nor external loopback testing.

The speed, duplex, mdi, and shutdown commands are not available during loopback testing.

During loopback testing, the Ethernet interface operates in full duplex mode. When you disable loopback testing,
the port returns to its duplex setting.

Configuring a port group

Some interfaces on your switch might use the same set of settings. To configure these interfaces in bulk
rather than one by one, you can assign them to a port group.
You create port groups manually. All settings made for a port group apply to all the member ports of the
group. For example, you can configure a traffic suppression threshold (see
protection‖) for multiple interfaces in bulk by assigning these interfaces to a port group.
Even though the settings are made on the port group, they are saved on each interface basis rather than
on a port group basis. You can only view the settings in the view of each interface by using the display
current-configuration or display this command.
Follow these steps to configure a port group:
To do...
Enter system view
Create a port group and enter
port group view
Assign Ethernet interfaces to the
port group
Shut down all Ethernet interfaces
in the port group

Configuring traffic storm protection

A traffic storm occurs when a large amount of broadcast, multicast, or unknown unicast packets congest a
network. The A5120 EI switches provide the following storm protection approaches:
 Storm suppression, which you can use to limit the size of monitored traffic that passes through an
Ethernet interface by setting a traffic threshold. The port discards all traffic that exceeds the
threshold.
Storm control, which you can use to shut down Ethernet interfaces or block traffic when monitored

traffic exceeds the traffic threshold. Depending on your configuration, storm control can also enable
an interface to send trap or log messages when monitored traffic reaches a certain traffic threshold.
For a particular type of traffic, configure either storm suppression or storm control, but not both. If you
configure both of them, you might fail to achieve the expected storm control effect.
Use the command...
system-view
port-group manual port-group-
name
group-member interface-list
shutdown
7
―Configuring traffic storm
Remarks
—
Required
Required
Optional
By default, all Ethernet interfaces
in a port group are up. To bring
up all Ethernet interfaces shut
down manually in a port group,
use the undo shutdown command
in port group view.