| 摘要 |
The invention relates to a service control entity (100) configured to control chains of services provided in a service network (400) in which a plurality of service providing modules (300) are provided, wherein data packets of a data packet flow from a source address to a destination address are transmitted through the service network (400) to apply a chain of services to the data packet flow. A chain control unit (110) determines the possible chains of services to be applied to the different data packet flows, and identifies, for each chain of services, the predefined sequence of services applied to the data packet flow and the service providing modules (300) which provide the services contained in the predefined sequence of services, and identifies in which order the identified service providing modules (300) have to be passed in order to apply the predefined sequence of services to the data packet flow. A module control unit (120) controls the service providing modules (300) and assigns, to each of the identified service providing modules (300) contained in the chain of services, an ingress network address of an underlying layer of the end-to-end layer, wherein the module control unit (120) assigns ingress network addresses to the service providing modules used in the corresponding chain of services in such a way that the ingress network address of a service providing module and the ingress network address of a neighboring service providing module which is the subsequent service providing module in the corresponding chain of services, are related to each other by a predefined relationship, |
