| Description | string | ClassifierService represents a logical entity associated with an ingress or egress interface of a device, that takes a single input stream, and sorts it into one or more output streams. The sorting is done by a set of filters that select packets based on the packet contents, or possibly based on other attributes associated with the packet. Each output stream is the result of matching a particular filter.
Rather than being linked directly to its filters (instantiated as FilterLists), a classifier is modeled as an aggregation of ClassifierElements. Each of these ClassifierElements is linked to a single FilterList, by the association ClassifierElementUsesFilterList. Note that ClassifierServices are designed to allow hierarchical classification. When hierarchical classification is used, a ClassifierElement may point to another ClassifierService (via the association, NextServiceAfterClassifierElement). When this is true, the ClassifierElement MUST NOT use the ClassifierElementUses FilterList association.
A classifier is modeled as a ConditioningService so that it can be aggregated into a QoSService (using the QoSConditioningSubService aggregation), and can use the NextService association to identify the subsequent ConditioningServices for different traffic streams. |