A METHOD FOR POLICING DATA TRAFFIC, A DATA TRAFFIC POLICER REALIZING SUCH A METHOD AND A TELECOMMUNICATION NETWORK INCLUDING SUCH A POLICER

摘要

The invention concerns a data traffic politer (POL) included in atelecommunication network to police data traffic. The data traffic includesdatapackets that are part of a lower order data flow that is on its turn part of ahigherorder data flow. Each data packet is associated to a lower order identifier(LOI)that identifies the lower order data flow and to a higher order identifierthat (HOI)identifies the higher order data flow. The politer (POL) includes firstdeterminingmeans (DET1) coupled to an input of the politer (POL) to determine, uponreception of a data packet, its lower order identifier (LOI). A first controlmeans(CTRL1) coupled to the first determining means (DET1) checks a conformance ofthe data packet according to predefined lower order conformance rules(LOC(LOI)) associated to its lower order identifier (LOI) and provides therebyalower order conformance result (LOCK) that is lower order conforming or lowerorder non-conforming. Furthermore the politer (POL) includes seconddetermining means (DET2) coupled to the input to determine the higher orderidentifier (HOI) that is associated to the data packet and forwards the higherorder identifier (HOI) to a second control means (CTRL2). The second controlmeans (CTRL2) checks a conformance of the data packet according topredefined higher order conformance rules (HOC(HOI)) associated to the higherorder identifier (HOI) and provides a higher order conformance result (HOCR)that is higher order conforming or higher order non-conforming. The politer(POL) includes declaring means (DECL) coupled between the first control means(CTRL1), the second control means (CTRL2) and an output (OUT) of the politer(POL). The declaring means (DECL) declares, in the event when the lower orderconformance result (LOCR) is lower order non-conforming, and the higher orderconformance result (HOCK) is higher order conforming, the data packet asconforming. Hereby, when being transmitted, the data packet uses some leftoverbandwidth from another lower order data flow within the higher order dataflow.