Peer-to-peer (P2P) traffic dominates the Internet (Parker, 2005) and the P2P service Skype dominates global VoIP. This paper is an introduction to IP overlay networks and P2P applications, such as are used for content distribution and communications. P2P SIP is the standards based approach for P2P communications. The main design features of P2P SIP networks are presented along with interesting usage scenarios that would be difficult to implement with client-server (CS) SIP systems. The properties of P2P communications, security and control issues are described. P2P communications are the opposite to complex infrastructure based Voice over IP (VoIP) and multimedia systems such as IMS and TISPAN and may render them largely obsolete for reasons of cost, complexity and ease of innovation at the edge of the network.
Peer-to-Peer (P2P) erzeugt den meisten Verkehr im Internet, und der P2P-Dienst Skype ist führend bei globalem VoIP. Die vorliegende Arbeit ist eine Einführung in IP-Overlaynetze sowie in P2P-Anwendungen für Content-Verteilung und Kommunikation. P2P SIP ist die standardisierte Lösung für die P2P-Kommunikation. Die wesentlichen Merkmale von P2P SIP-Netzen werden anhand solcher neuen Anwendungsbeispiele vorgestellt, die mit Client-Server(CS)-SIP-Systemen schwierig herzustellen wären. Einrichtungen zur P2P-Kommunikation, Sicherheits- und Steuerungsabläufe werden beschrieben. P2P-Kommunikation ist eine Herausforderung an die komplexen Infrastrukturen für Voice over IP (VoIP) und von Multimediasystemen wie IMS und TISPAN, deren Technik aufgrund von Kosten, Komplexität und mangelndes Innovationspotential am Netzrand stark veraltet sind.
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Sinnreich, H. The challenge of P2P Internet communications to network based services. Elektrotech. Inftech. 123, 277–282 (2006). https://doi.org/10.1007/s00502-006-0354-y
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DOI: https://doi.org/10.1007/s00502-006-0354-y