A short proof of the VPN Tree Routing Conjecture on ring networks

Authors:
Fabrizio Grandoni;Volker Kaibel;Gianpaolo Oriolo;Martin Skutella
Affiliations:
Dipartimento di Informatica, Sistemi e Produzione, Universití di Roma "Tor Vergata", Italy;Fakultät für Mathematik, Otto-von-Guericke-Universität Magdeburg, Germany;Dipartimento di Ingegneria dell'Impresa, Universití di Roma "Tor Vergata", Italy;Institut für Mathematik, Technische Universität Berlin, Germany
Venue:
Operations Research Letters
Year:
2008

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Abstract

Only recently, Hurkens, Keijsper, and Stougie proved the VPN Tree Routing Conjecture for the special case of ring networks. We present a short proof of a slightly stronger result which might also turn out to be useful for proving the VPN Tree Routing Conjecture for general networks.