Configuring A Layer 2 Ethernet Interface; Configuring Storm Suppression - HP 6125XLG Configuration Manual

Configuring a Layer 2 Ethernet interface

Configuring storm suppression

You can use the storm suppression function to limit the size of a particular type of traffic (broadcast,
multicast, or unknown unicast traffic) on an interface. When the broadcast, multicast, or unknown unicast
traffic on the interface exceeds this threshold, the system discards packets until the traffic drops below this
threshold.
Any of the storm-constrain, broadcast-suppression, multicast-suppression, and unicast-suppression
commands can suppress storm on a port. The broadcast-suppression, multicast-suppression, and
unicast-suppression commands suppress traffic in hardware, and have less impact on device
performance than the storm-constrain command, which performs suppression in software.
Configuration guidelines
For the same type of traffic, do not configure the storm constrain command together with any of the
broadcast-suppression, multicast-suppression, and unicast-suppression commands. Otherwise, the
traffic suppression result is not determined. For more information about the storm-constrain command,
see "Configuring storm control on an Ethernet
When you configure the suppression threshold in kbps, the actual suppression threshold might be
different from the configured one as follows:
• If the configured value is smaller than 64, the value of 64 takes effect.
If the configured value is greater than 64 but not an integer multiple of 64, the integer multiple of
•
64 that is greater than and closest to the configured value takes effect.
For the suppression threshold that takes effect, see the prompt on the device.
Configuration procedure
To set storm suppression thresholds on one or multiple Ethernet interfaces:
Step
1. Enter system view.
2. Enter Layer 2 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.
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 }
11
Remarks
N/A
N/A
By default, broadcast traffic is
allowed to pass through an
interface.
By default, multicast traffic is
allowed to pass through an
interface.
By default, unknown unicast traffic
is allowed to pass through an
interface.