Multicast Routing in Hierarchical Optical Networks Using Collection-Distribution Networks
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Emerging optical networks have hierarchical architectures with varying capabilities at different levels. Moreover, many applications nowadays require multicast (one-to-many) connections. We propose a network model that has such a hierarchical architecture which is designed for multicast connections. We develop a multi-stage routing scheme which solves the routing problem in different levels of the network for multicast connections. The network model consists of three levels: collection, core and distribution networks. We adopt the light-trail model in collection-distribution networks which is a convenient way to carry multicast connections. Connection points between the core and collection networks are the edge routers which groom several multicast connections destined to the same distribution network. We evaluate two call acceptance criteria, namely best effort and all-or-none corresponding to total or partial multicast service, respectively. We show using simulations that our multi-stage routing algorithm with light-trails and edge-grooming improves the performance in the hierarchical network model.
Keywordsmulticasting light-trails hierarchical optical networks routing algorithms
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- 4.Gumaste, A., Chlamtac, I.: Light-trails: A novel conceptual framework for conducting optical communications. In: Proc. HPSR, pp. 251–256 (June 2003)Google Scholar
- 6.Balasubramanian, S., Somani, A.K.: A comparative study of path level traffic grooming strategies for wdm optical networks with dynamic traffic - invited paper. In: Proc. ICCCN, pp. 267–272 (August 2008)Google Scholar
- 8.Ye, Y., Woesner, H., Grasso, R., Chen, T., Chlamtac, I.: Traffic grooming in light trail networks. In: Proc. GLOBECOM (November-December 2005)Google Scholar
- 9.Li, Y., Wang, J., Gumaste, A., Xu, Y., Xu, Y.: Multicast routing in light-trail WDM networks. In: Proc. GLOBECOM (November–December 2008)Google Scholar
- 10.Zhu, Y., Patel, A.N., Jue, J.P.: A novel graph model for dynamic multicast flow aggregation in optical networks. In: Proc. ICC (June 2009)Google Scholar
- 11.Gumaste, A., Wang, J., Karandikar, A., Ghani, N.: Multihop light-trails MLT - a solution to extended metro networks. In: Proc. ICC (June 2009)Google Scholar