摘要:
Methods for transmitting information from sources (7) via first network units (1) and networks (8) and second network units (2) to destinations (9) and using service identifiers such as service virtual local area network identifiers for routing the information through the networks (8) get a reduced complexity by making the service identifiers dependent on destination properties such as destination addresses and by making the service identifiers independent from source properties such as source addresses or customer identifiers. Network units (1,2) comprising customer parts (5) with customer access ports (10) and customer interface ports (11-13) and comprising service parts (6) with service interface ports (21-23) coupled to the customer interface ports (11-13) and service network ports (20) coupled to the service interface ports (21-23) and comprising taggers (62) are provided with detectors (52) for detecting destination properties in the information and selectors (53) for selecting the service identifies in response to detections of the destination properties.
摘要:
Systems for transmitting information from terminal systems (1) via access multiplexers (3) comprising virtual forwarder systems (5) to networks are made less complex by inserting at the terminal systems (1) virtual forwarder internet protocol addresses (35,64,66) into destination fields of internet protocol headers for heading the information and by inserting destination internet protocol addresses (36,37,38,65,67) into routing fields of the internet protocol headers. Both the terminal systems (1) and the access multiplexers (3) should be made capable of dealing with internet protocol headers of the internet protocol version-4 or the internet protocol version-6 or higher, which comprise a destination field and a routing field. The destination internet protocol addresses (36,37,38,65,67) in the routing fields allow distinguishment between different classes of services and/or applications used by the terminal system (1) simultaneously, without the access multiplexers (3) being obliged to unpack (parts of) the information and to detect (parts of) the information at higher layers.