unknown-unicast-suppression cir cbs (VSI view)

Function

The unknown-unicast-suppression cir cbs command enables unknown unicast traffic suppression in the VSI.

The undo unknown-unicast-suppression command disables unknown unicast traffic suppression in the VSI.

By default, unknown unicast traffic in a VSI is not suppressed.

Format

unknown-unicast-suppression cir cir-value cbs cbs-value

undo unknown-unicast-suppression

Parameters

Parameter	Description	Value
cir cir-value	Specifies the CIR, that is, the allowed rate at which traffic can pass through.	The value is an integer that ranges from 0 to 10000000, in kbit/s.
cbs cbs-value	Specifies the CBS, that is, the traffic that can pass instantly, or the depth of the first token bucket.	The value is an integer that ranges from 10000 to 4294967295, in bytes.

Views

VSI view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

On a VPLS network, broadcast packets, multicast packets, and unknown unicast packets are transmitted in broadcast mode and copied to neighboring ACs and PWs. If large quantities of unknown unicast packets are on the VPLS network, the device has to make a lot of copies of these unknown unicast packets, which wastes bandwidth and resources, and deteriorates system performance. You can run the unknown-unicast-suppression cir cbs command to suppress the unknown unicast traffic in the VSI. The rate of unknown unicast traffic on the VPLS network is limited.

Prerequisites

A VSI has been created using the vsi vsi-name [ auto | static ] command.

Example

# Set the CIR to 100 kbit/s and the CBS to 18800 bytes for the unknown unicast traffic that can pass for VSI1.

<HUAWEI> system-view
[HUAWEI] vsi VSI1
[HUAWEI-vsi-VSI1] unknown-unicast-suppression cir 100 cbs 18800