Traffic control modules facilitate traffic control. Traffic control modules include the packet classifier, the packet scheduler, and the packet shaper.
Resource ReSerVation Protocol is invoked by the RSVP service provider (SP), and the carrier of RSVP messages across the entire network, with a functional interface for each QOS-enabled network device, hop across the network. Though important to overall Windows 2000 QOS technology, and to QOS in general, certain QOS faculties do not require RSVP to operate, which means that quality of service can be achieved without RSVP signaling.