Network system, method for preparing for transit and implement traffic packages, and node transit to transit a connection end-to-end

摘要

Network system, method for preparing for tru00e2nsitoe run transit packets, and tru00e3nsito node to transit a connection end to end the invention relates to a method.Device and system for tru00e3nsito information through packet switched networks, in particular for traffic of a connection from end to end through a plurality of such networks (1),1 ") usaando a method of tru00e3nsito which is independent of the network technology used in the different networks.A knot of end-to-end service (21) selects the networks and connections to a connection end to end should cross.For each network, a node entry transit (2) and a node transit output (3) are connected. Among these, a ramaificau00e7u00e3o connecting tip is carried over.The transit node has a list of exit (37) of tags used for identification of a traffic flow related to the connection package.A label is selected from the list and tru00e3nsito is signalled to the node entry transit along with the local address of the node of tru00e3nsito exit.In the transit node entry, input packets are analyzed with respect to the presence of a local identifier (for example, called a label attachment).In the transit node input packets with a local identifier are subject to special treatment.Its payload is put into the payload of a new packet that is formatted according to the network technology used in the network, and as destination of the new package is the address of the node transit. It used.The new package is marked with the label of traffic. Finally, the new package is injected in the network and routes it acoro with mechanisms of routings in that network.When the new packet arrives at the node of tru00e3nsito output, its label is used with entry identifier tru00e3nsito