caa a22 4500 378856480 CHVBK 20180305123336.0 cr unu---uuuuu 161128e200306 xx s 000 0 ger 10.1515/PIKO.2003.65 doi (NATIONALLICENCE)gruyter-10.1515/PIKO.2003.65 Dynamic Operation of Peer-to-Peer Overlay Networks [Elektronische Daten] [H. De Meer, K. Tutschku, P. Tran-Gia] Virtual overlay networks, such as virtual private networks or peer-to-peer services, can be seen as a new paradigm for providing multi-service networks. Virtual overlay networks may offer customized services to a specified community while providing a high degree of flexibility in the usage of shared resources. This paper examines the requirements of operating dynamic overlays, in particular, for peer-to-peer services. The analysis is based on extensive measurement studies performed on the global Gnutella network during operation. The obtained results indicate limitations in the scalability of native p2p overlays, suggesting the need of a control scheme for efficiency reasons. As an enabling infrastructure to implement a distributed control scheme for p2p overlays a so-called Application-Layer Active Networking (ALAN) platform has been chosen. Based on Application-Layer Active Networking, Active Virtual Peers (AVP) are introduced as the main concept for dynamic operation and management of peer-to-peer overlay networks. AVPs facilitate policy enforcement or performance management by means of self-organization, predominantly on the application layer with minimum interference on lower layers. © Copyright by K.G. Saur Verlag 2003 Peer-to-Peer services nationallicence overlay systems nationallicence Gnutella nationallicence measurement nationallicence traffic management nationallicence Meer H. De aut Tutschku K. aut Tran-Gia P. aut Praxis der Informationsverarbeitung und Kommunikation Walter de Gruyter GmbH & Co. KG 26/2(2003-06), 65-73 0930-5157 26:2<65 2003 26 PIKO https://doi.org/10.1515/PIKO.2003.65 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/PIKO.2003.65 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Meer H. De aut NATIONALLICENCE 700 1- Tutschku K. aut NATIONALLICENCE 700 1- Tran-Gia P. aut NATIONALLICENCE 773 0- Praxis der Informationsverarbeitung und Kommunikation Walter de Gruyter GmbH & Co. KG 26/2(2003-06), 65-73 0930-5157 26:2<65 2003 26 PIKO CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter