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Hierarchical routing and traffic grooming in IP/MPLS-based ASON/GMPLS multi-domain networks This publication appears in: Photonic Network Communications Authors: W. Halabi, K. Steenhaut, M. Goossens, T. Truong and A. Nowé Volume: 23 Issue: 3 (2012) Pages: 217-229 Publication Date: May. 2012
Abstract: Routing, connection setup and path computation are well-known problems in multi-domain networks, which have been largely analyzed in pure IP (packet) networks. In circuit switched optical multi-domain networks there remain however a number of routing and path computation challenges.
Traffic grooming is combining a number of low speed traffic streams so that the high capacity of each lightpath may be used as efficiently as possible, as path computation implements the core of the grooming function, it is obvious that solutions for the traffic grooming problem in optical multi-domain networks are still not sufficiently investigated.
In this study we propose a methodology to address the problems of routing, connection setup and traffic grooming in optical multi-domain networks, which adapts a two level hierarchical routing scheme and use full mesh topology abstraction algorithm to improve routing scalability and lower inter-domain blocking probabilities additionally our proposed methodology adapts a scheme for traffic grooming in DWDM multi-domain networks to improve the resources usage.
We test our proposed methodology using a detailed IP/MPLS based ASON/GMPLS Multi-Domain multi-layer test framework. External Link.
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