R3303-HP HSR6800 Routers Interface Configuration Guide

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• Shuts down automatically. The interface shuts down automatically and stops forwarding any traffic.
When the blocked traffic is detected dropping below the lower threshold, the port does not forward
the traffic. To bring up the interface, use the undo shutdown command or disable the storm control
function.
Alternatively, you can configure the storm suppression function to control a specific type of traffic. Do not
enable them both on an Ethernet interface at the same time because the storm suppression and storm
control functions are mutually exclusive. For example, with an unknown unicast suppression threshold set
on an Ethernet interface, do not enable storm control for unknown unicast traffic on the interface. For
more information about storm suppression, see "Configuring storm suppression."
Configuration guidelines
• For network stability, use the default or set a higher traffic polling interval.
• Storm control uses a complete polling cycle to collect traffic data, and analyzes the data in the next
cycle. An interface takes one to two polling intervals to take a storm control action.
• The storm control function allows you to set the upper and lower thresholds for all three types of
packets separately on the same interface.
Configuration procedure
To configure storm control on an Ethernet interface:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Set the traffic polling interval
of the storm control module.
storm-constrain interval seconds
Optional.
The default setting is 10 seconds.
3. Enter Ethernet interface view.
interface interface-type
interface-number
N/A
4. Enable storm control, and set
the lower and upper
thresholds for broadcast,
multicast, or unknown unicast
traffic.
storm-constrain { broadcast |
multicast | unicast } { pps | kbps |
ratio } max-pps-values
min-pps-values
By default, storm control is
disabled.
5. Set the control action to take
when monitored traffic
exceeds the upper threshold.
storm-constrain control { block |
shutdown }
Optional.
No action is taken on an Ethernet
interface when a type of traffic
exceeds the upper storm control
threshold.
6. Enable the interface to send
storm control threshold event
traps.
storm-constrain enable trap
Optional.
By default, the interface sends
traps when monitored traffic
exceeds the upper threshold or
drops below the lower threshold
from the upper threshold.
7. Enable the interface to log
storm control threshold events.
storm-constrain enable log
Optional.
By default, the interface outputs log
messages when monitored traffic
exceeds the upper threshold or
falls below the lower threshold
from the upper threshold.