Configuring Storm Control On An Ethernet Interface - H3C S10500 Series Interface Configuration Manual

•
For the traffic suppression result to be determined, do not configure storm control together with
storm suppression for the same type of traffic. For more information about storm control, see
"Configuring storm control on an Ethernet
•
The configured suppression threshold value in pps or kbps might be converted into a multiple of
a step supported by the chip. As a result, the effective suppression threshold might be different
from the configured one. For information about the suppression threshold that takes effect, see
the prompt on the device.
•
PEXs in an IRF 3 system do not support unknown unicast suppression. For more information
about PEXs, see Virtual Technologies Configuration Guide.
•
To configure unicast (not supported on PEXs), multicast, and broadcast suppression on a
physical interface of a PEX, use the same unit for the suppression thresholds. For example, if
the multicast suppression threshold is configured in kbps, the broadcast suppression threshold
must also be configured in kbps.
•
To change the suppression threshold unit, use the undo form of the command to restore the
default first. For example, to change the unit from pps to kbps, you must use the undo form of
the command to restore the default first.
Configuration procedure
To set storm suppression thresholds on an Ethernet interface:
Step
1. Enter system view.
2. Enter Ethernet interface
view.
3. Enable broadcast
suppression and set the
broadcast suppression
threshold.
4. Enable multicast
suppression and set the
multicast suppression
threshold.
5. Enable unknown unicast
suppression and set the
unknown unicast
suppression threshold.

Configuring storm control on an Ethernet interface

About storm control
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 an upper threshold.
Depending on your configuration, when a particular type of traffic exceeds its upper threshold, the
interface performs either of the following operations:
•
Blocks this type of traffic and forwards other types of traffic—Even though the interface
does not forward the blocked traffic, it still counts the traffic. When the blocked traffic drops
below the lower threshold, the interface begins to forward the traffic.
•
Goes down automatically—The interface goes down automatically and stops forwarding any
traffic. When the blocked traffic drops below the lower threshold, the interface does not
automatically come up. To bring up the interface, use the undo shutdown command or disable
the storm control feature.
interface."
Command
system-view
interface interface-type
interface-number
broadcast-suppression { ratio |
pps max-pps | kbps max-kbps }
multicast-suppression { ratio |
pps max-pps | kbps max-kbps }
unicast-suppression { ratio | pps
max-pps | kbps max-kbps }
17
Remarks
N/A
N/A
By default, broadcast suppression
is disabled.
By default, multicast suppression
is disabled.
By default, unknown unicast
suppression is disabled.