Providing and verifying advanced IP services in hierarchical DiffServ networks-the case of GEANT

Athanassios Liakopoulos, Basil Maglaris, Christos Bouras, Afrodite Sevasti 1 Department of Electrical & Computer Engineering, National Technical University of Athens (NTUA), 15780 Zografou, Athens, Greece Greek Research and Technology Network (GRNET), 56 Mesogion Ave., 11574, Athens, Greece Department of Computer Engineering and Informatics, University of Patras, 26500 Rion, Patras, Greece Computer Technology Institute, 61 Riga Feraiou Str., 262 21 Patras, Greece {[email protected], [email protected], [email protected], [email protected]} Contact author: Athanassios Liakopoulos Greek Research and Technology Network (GRNET), 56 Mesogion Ave., 11574, Athens, Greece Tel: +30 210 7474242 Fax: +30 210 7474490