Optimization of common pool resource sharing in multidomain IP-over-WDM networks

Authors:
D. Staessens;D. Colle;M. Pickavet;A. Nowé;K. Steenhaut;P. Demeester
Affiliations:
Ghent University-IBBT, Department of Information Technology (INTEC), G. Crommenlaan 8, bus 201, B-9050 Ghent, Belgium;Ghent University-IBBT, Department of Information Technology (INTEC), G. Crommenlaan 8, bus 201, B-9050 Ghent, Belgium;Ghent University-IBBT, Department of Information Technology (INTEC), G. Crommenlaan 8, bus 201, B-9050 Ghent, Belgium;Vrije Universiteit Brussel, DINF Department, COMO Research Group, Pleinlaan 2, B-1050 Brussel, Belgium;Vrije Universiteit Brussel, ETRO Department, IRIS Research Group, Pleinlaan 2, B-1050 Brussel, Belgium;Ghent University-IBBT, Department of Information Technology (INTEC), G. Crommenlaan 8, bus 201, B-9050 Ghent, Belgium
Venue:
Computer Communications
Year:
2012

Citing 5
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Abstract

Carrier networks are gradually adopting a network model that consists of MPLS capable routers and OXCs interconnected by high bandwidth WDM links for transporting IP and Ethernet traffic. Globalization drives the quest for end-to-end QoS guarantees over different carrier networks. Recovery mechanisms are crucial to reach the high availability requirements of critical services. In this paper we investigate how to enable high availability services spanning multiple networks, using failure protection techniques, whilst obeying administrative constraints. We show how different multidomain schemes compare in terms of availability. A constructive proof is given of the applicability of our approach, which leads to a heuristic solution. We compare this heuristic solution to an ILP model. The heuristic finds optimum solutions in most cases, but for individual cases and in an operational scenario, the ILP shows there is still room for improvement.