This section describes the IPQoS architecture and how IPQoS implements the differentiated services (Diffserv) model that is defined inRFC 2475, An Architecture for Differentiated Services. The following elements of the Diffserv model are included in IPQoS:
Classifier
Meter
Marker
In addition, IPQoS includes the flow-accounting module and the dlcosmk marker for use with virtual local area network (VLAN) devices.