Research On QoS-based Lambda Routing Techniques In SUPANET

With worldwide application, Internet has faced with two major challenges, QoS (Quality of Service) provisioning and ever-growing network insecurity. Progress in communication technologies such as DWDM, has raised bit rate of a lambda to tens of Gbps and further exacerbates the problem. Internet was developed more than 30 years ago when communication speed was very low (Kbps) and error rate was very high, and application data are text-oriented. Analysis has shown that such inadequacy for Internet in solving these problems was inheirated from its architecture. This is exactly the incentive for Sichuan Network Communication Technology Laboratory to research on Next Generation Internet (NGI) with a novel network architecture called SUPA (Single physical layer User-data transfer & switching Platform Architecture).As its name stands, SUPA is intended to simplify the user-data transfer and switching platform from current three layers to a single layer while remaining interoperable with existing Internet. The key concept in realization of SUPA is the Ethernet-oriented Physical Frame Timeslot Switching (EPFTS), which combines framing and switching functions with physical transmission capability. These are the background of the research work presented in this dissertation for Master degree.One of the main goals for SUPANET is to improve Quality of Service (QoS) provisioning in networks. This dissertation focuses on routing issues in SUPANET, which are vital in assurance of QoS for networks. Based on a comprehensive analysis to existing routing protocols in Internet, this thesis proposed a Shortest-Path & QoS-based Lambda Routing (SP-QLR) strategy to deal with routing issues in a multi-lambda network environment. An emphsis has been given to the two-step approach to cope with smooth migration problem from Internet to SUPANET, although one-step approach in the future has also been discussed briefly.Implementation issues of SP-QLR, such as interrelationship with QoSNP (Qos Negotiation Protocol), IAI (Intra-node Access Interface) between User-data and Signaling platforms, U-MIB (User-data platform Management Information Base) are discussed in some detail. Therefore, this dissertation presents a comprehensive study on various issues relevant to QoS provisioning in signaling platform as well as interoperation between platforms in SUPANET.