This object controls whether the packet rate control feature is enabled or disabled. Products which do not support this feature will return notApplicable(1) and reject any attempt to set it to a different value. When set to disable(2) the switch will not perform any rate limiting. If set to any of the remaining values the switch will monitor the throughput of the specified type(s) of frame and discard some if necessary to reduce the throughput to the amount specified by the value of prConStackPktRateLimit. The enumerations select which types of packet are to be rate limited as follows:- limitUnknownDAs(3) Unicast Frames with a destination address not in the filtering database limitMcasts(4) Multicasts limitMcastsAndUnknownDAs(5) Multicasts, and unicasts with unknown destination addresses limitBcasts(6) Broadcasts limitBcastsAndUnknownDAs(7) Broadcasts, and unicasts with unknown destination addresses limitMcastsAndBcasts(8) Multicasts and Broadcasts limitMcastsBcastsAndUnknownDAs(9) All the above types of frame