Exploration Of GMPLS System Implementation

A great variety of equipments, such as IP routers, ATM switches, SONET/SDH devices, have been deployed in today's data networks. Each of them has its own control and management protocol, which makes the management of integrated network very complex. Moreover, the explosive growth of network traffic and increasing capacity of a single optical fiber makes the deployment of optical cross-connects (OXCs) a preferred option for switching high-speed data streams. A unified control plane for all these equipments to support multiple switching layers, simplify operations and management, reduce the cost of operation, and create new services becomes critical for the evolution of open and interoperable data networks. Generalized Multi-Protocol Label Switching (GMPLS) is being standardized by Internet Engineering Task Force (IETF) to serve as an integral protocol for the next generation of data networks. GMPLS extends MPLS from the IP to photonic layers to allow for interoperable and scalable parallel growth in the IP and photonic dimensions. From the functional point of view, a GPMLS control plane can be partitioned into the following components: link management, routing, and signaling. As an extension of MPLS, GMPLS needs modify the routing and signaling protocols of MPLS, and add a new protocol to address issues related to link management in optical networks developed with photonic switches (PXCs), optical cross-connects (OXCs), routers, switches, and DWDM systems. Link Management Protocol (LMP), enhancements to OSPF/IS-IS, and enhancements to RSVP/CR-LDP are being standardized by the IETF under the umbrella of GMPLS respectively. In our project, we show a GMPLS experimental system including LMP, routing and signaling protocols and interfaces of them. As part of the system, the thesis provides a detailed description about CSPF, IDP, PM modules and GMPLS routing and recovery algorithm, and successfully realizes the routing function of this experimental system.