mask

Function

The mask command sets the aggregation mask length.

The undo mask command restores the default setting.

By default, no aggregation mask is configured.

Format

mask { source | destination } minimum mask-length

undo mask { source | destination }

Parameters

Parameter	Description	Value
source	Indicates the aggregation mask of the source address. It is used in the following aggregation methods: prefix, prefix-ToS, source-prefix, and source-prefix-ToS.	-
destination	Indicates the aggregation mask of the destination address. It is used in the following aggregation methods: prefix, prefix-ToS, destination-prefix, or destination-prefix-ToS.	-
mask-length	Specifies the aggregation mask length.	The value is an integer that ranges from 1 to 32.

Views

NetStream aggregation view

Default Level

3: Management level

Usage Guidelines

Usage Scenario

The system uses the larger value between the set mask and the largest mask in the FIB table. If the aggregation mask is not configured, the system uses the mask in the FIB table for aggregation.

Precaution

Aggregation masks are applied to six aggregation methods: destination-prefix, destination-prefix-tos, prefix, prefix-tos, source-prefix, and source-prefix-tos.

Example

# Set the aggregation mask length in the source-prefix aggregation method to 24.

<HUAWEI> system-view
[HUAWEI] ip netstream aggregation source-prefix
[HUAWEI-aggregation-srcpre] mask source minimum 24