Description: This object identifies the actual data source to be used as the source of all packets for this virtual data source. A valid dataSourceCapsEntry must be maintained by the agent on behalf of this 'parent' interface.

If the ifOperStatus for the parent's ifEntry is not equal to 'up', then no packets will be available to this virtual data source.

This object must identify a valid SmonDataSource. Virtual data sources cannot be represented in the SMON dataSourceCapsTable. However, the dataSourceRmonCaps object in the dataSourceCapsEntry for this entry can be used to identify most of the attributes that a virtual data source inherits from its parent. The 'countErrFrames', 'countAllGoodFrames', and 'babyGiantsCountAsGood' BITs are all inherited from the parent data source. The 'countAnyRmonTables' BIT is not inherited, as it is assumed to be set for virtual data sources. An agent is required to support at least one RMON collection type for each virtual data source.

This object may not be modified if the associated vdsControlStatus object is equal to active(1).