Proposed packet routing system based on label switched method

In telecommunication networks, a mechanism (MPLS Multiprotocol Label Switching) is used to enable data circuit switching comportment built on a packet based network. This paper proposes, in a network of interconnected nodes, a packet routing/switching system by which label switched routing is performed within a hierarchy of LSP (Label-Switched Path) previously defined or provisioned. Instead of transmitting the entire label stack, using one label for each LSP in the hierarchy, a single LSP label is transmitted together with a list of component identifiers from which the full LSP labels can be locally determined at each node.