Performance analysis of multicast routing and wavelength assignment protocol with dynamic traffic grooming in WDM networks

The need for on-demand provisioning of wavelength routed channels with service differentiated offerings within the transport layer has become more essential due to the recent emergence of high bit rate IP network applications such as multimedia conferencing systems, video on demand systems, real-time control systems, etc. Diverse optical transport network architectures have been proposed in order to achieve the above requirements. This approach is determined by the fundamental advances in the wavelength division multiplexing (WDM) technologies. The concurrent transmission of multiple streams of data with the assistance of special properties of fiber optics is called as wavelength division multiplexing (WDM). The WDM network provides the capability of transferring huge amount of data at high speeds by the users over large distance. In this paper, a multicast routing and wavelength assignment protocol for capacity improvement in wavelength division multiplexing (WDM) networks is designed. In wavelength assignment technique, paths from source node to each of the destination nodes and the potential paths are divided into fragments by the junction nodes and these junction nodes have the wavelength conversion capability. By using the concept of fragmentation and grouping, the proposed scheme can be generally applied for the wavelength assignment of multicast in WDM network. An optimized dynamic traffic grooming algorithm is also developed to address the traffic grooming problem in mesh networks in the multicast scenario for maximizing the resource utilization as well as minimizing the blocking probability.