TECHNIQUE FOR ESTABLISHING A FORWARDING PATH IN A NETWORK SYSTEM

摘要

A technique for determining an interconnect node for establishment of a forwarding path for transmitting service based data within a network system comprising a first network and a second network is provided. The first network comprises: a plurality of network interconnect nodes connectable to a plurality of external links towards the second network, and one or more internal links connecting the network interconnect nodes with each other. A method implementation of the technique comprises assigning, for a given service, interconnect node status information to the network interconnect nodes, wherein a network interconnect node to which a passive status is assigned is only allowed to transmit service based data between an external link and another interconnect node of the network, or between two other interconnect nodes of the network, and wherein only a network interconnect node to which an active status is assigned is allowed to send or receive service based data to or from the network. The method further comprises determining, for a given service, an interconnect node having an active status for establishment of a forwarding path including the interconnect node having the active status and an external link, wherein the determination is based on the respective status information assigned to the network interconnect nodes for the service.