R21xx-HP FlexFabric 11900 Layer 2 LAN Switching Configuration Guide

Setting the statistics polling interval

To set the statistics polling interval on an Ethernet interface:

Step Command Remarks

1. Enter system view.

system-view N/A

2. Enter Ethernet interface

view.

interface interface-type

interface-number

N/A

3. Set the statistics polling

interval.

flow-interval interval The default setting is 300 seconds.

To display the interface statistics collected in the last polling interval, use the display interface command.

To clear interface statistics, use the reset counters interface command.

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 interface."

hen you configure the suppression threshold in kbps, the switch automatically uses a multiple of 64 as

the threshold. If you configure a value less than 64, the switch sets the threshold to 64 kbps. If you

configure a value greater than 64, the switch sets the threshold to a multiple of 64 which is greater than

the configured value and is nearest to the value than other multiples. For example, if you configure 68,

the switch automatically sets the suppression threshold to 128 kbps.

Configuration procedure

To set storm suppression thresholds on one or multiple Ethernet interfaces:

Step Command Remarks

1. Enter system view.

system-view N/A

2. Enter Ethernet interface view.

interface interface-type interface-number N/A