caa a22 4500 445871199 CHVBK 20180317145512.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s11107-010-0291-x doi (NATIONALLICENCE)springer-10.1007/s11107-010-0291-x Logical topology design for IP rerouting: ASONs versus static OTNs [Elektronische Daten] [Adelbert Groebbens, Didier Colle, Sophie De Maesschalck, Bart Puype, Kris Steenhaut, Mario Pickavet, Ann Nowé, Piet Demeester] IP-based backbone networks are gradually moving to a network model consisting of high-speed routers that are flexibly interconnected by a mesh of light paths set up by an optical transport network that consists of wavelength division multiplexing (WDM) links and optical cross-connects. In such a model, the generalized MPLS protocol suite could provide the IP centric control plane component that will be used to deliver rapid and dynamic circuit provisioning of end-to-end optical light paths between the routers. This is called an automatic switched optical (transport) network (ASON). An ASON enables reconfiguration of the logical IP topology by setting up and tearing down light paths. This allows to up- or downgrade link capacities during a router failure to the capacities needed by the new routing of the affected traffic. Such survivability against (single) IP router failures is cost-effective, as capacity to the IP layer can be provided flexibly when necessary. We present and investigate a logical topology optimization problem that minimizes the total amount or cost of the needed resources (interfaces, wavelengths, WDM line-systems, amplifiers, etc.) in both the IP and the optical layer. A novel optimization aspect in this problem is the possibility, as a result of the ASON, to reuse the physical resources (like interface cards and WDM line-systems) over the different network states (the failure-free and all the router failure scenarios). We devised a simple optimization strategy to investigate the cost of the ASON approach and compare it with other schemes that survive single router failures. Springer Science+Business Media, LLC, 2010 IP-over-WDM nationallicence Optical transport networks nationallicence Automatic switched optical networks nationallicence IP topology reconfiguration nationallicence Survivability nationallicence Groebbens Adelbert Department of Information Technology, Ghent University— IBBT—IMEC, Gaston Crommenlaan 8, 9050, Gent, Belgium aut Colle Didier Department of Information Technology, Ghent University— IBBT—IMEC, Gaston Crommenlaan 8, 9050, Gent, Belgium aut De Maesschalck Sophie Department of Information Technology, Ghent University— IBBT—IMEC, Gaston Crommenlaan 8, 9050, Gent, Belgium aut Puype Bart Department of Information Technology, Ghent University— IBBT—IMEC, Gaston Crommenlaan 8, 9050, Gent, Belgium aut Steenhaut Kris Vrije Universiteit Brussel—TW—ETRO, COMO Pleinlaan 2, 1050, Brussel, Belgium aut Pickavet Mario Department of Information Technology, Ghent University— IBBT—IMEC, Gaston Crommenlaan 8, 9050, Gent, Belgium aut Nowé Ann Vrije Universiteit Brussel—TW—ETRO, COMO Pleinlaan 2, 1050, Brussel, Belgium aut Demeester Piet Department of Information Technology, Ghent University— IBBT—IMEC, Gaston Crommenlaan 8, 9050, Gent, Belgium aut Photonic Network Communications Springer US; http://www.springer-ny.com 21/2(2011-04-01), 170-191 1387-974X 21:2<170 2011 21 11107 https://doi.org/10.1007/s11107-010-0291-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11107-010-0291-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Groebbens Adelbert Department of Information Technology, Ghent University— IBBT—IMEC, Gaston Crommenlaan 8, 9050, Gent, Belgium aut NATIONALLICENCE 700 1- Colle Didier Department of Information Technology, Ghent University— IBBT—IMEC, Gaston Crommenlaan 8, 9050, Gent, Belgium aut NATIONALLICENCE 700 1- De Maesschalck Sophie Department of Information Technology, Ghent University— IBBT—IMEC, Gaston Crommenlaan 8, 9050, Gent, Belgium aut NATIONALLICENCE 700 1- Puype Bart Department of Information Technology, Ghent University— IBBT—IMEC, Gaston Crommenlaan 8, 9050, Gent, Belgium aut NATIONALLICENCE 700 1- Steenhaut Kris Vrije Universiteit Brussel—TW—ETRO, COMO Pleinlaan 2, 1050, Brussel, Belgium aut NATIONALLICENCE 700 1- Pickavet Mario Department of Information Technology, Ghent University— IBBT—IMEC, Gaston Crommenlaan 8, 9050, Gent, Belgium aut NATIONALLICENCE 700 1- Nowé Ann Vrije Universiteit Brussel—TW—ETRO, COMO Pleinlaan 2, 1050, Brussel, Belgium aut NATIONALLICENCE 700 1- Demeester Piet Department of Information Technology, Ghent University— IBBT—IMEC, Gaston Crommenlaan 8, 9050, Gent, Belgium aut NATIONALLICENCE 773 0- Photonic Network Communications Springer US; http://www.springer-ny.com 21/2(2011-04-01), 170-191 1387-974X 21:2<170 2011 21 11107 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer