A proposal of next generation network: QoS mapping for MPLS-DiffServ and label forwarding

Differentiated services (DiffServ) supporting MultiProtocol label switching (MPLS) network has the problem in service-mapping, thus resulting 1) difficult establishment of a fully classified path from end to end, or 2) a necessary tradeoff between label space and the number of service classes. In this paper, we propose a new service mapping scheme for achieving the optimal between the number of service classes supported and the label space available. Features comparison of proposed service-mapping schemes is also provided. The proposed approach also combines the techniques of IPv6 and labeling protocol. By using IPv6 packet header, the sender issues a triggered packet to establish label switch path (LSP) between label switch routers (LSR) in DiffServ domain.