Michael Tüxen

SCTP – A Multi-link End-to-end Protocol for IP-based Networks

Summary IP-based networks grow rapidly and coexist with other universal basic telecommunication infrastructures, namely with the ISDN, mobile networks and ATM networks. Since all infrastructures are capable of carrying all applications and services, there is a growing need for interworking. To be able to transfer signaling traffic originating in the other networks via IP networks, a family of protocols is being defined based on SCTP, a new end-to-end transport protocol. This paper describes some features of SCTP in detail and highlights some advantages over TCP. In addition, a modification of SCTP is proposed and evaluated which significantly enhances the performance in long delay environments.

Das Simple Control Transmission Protocol (SCTP) — ein neues Protokoll zum Transport von Signalisierungsmeldungen über IP-basierte Netze

ZusammenfassungDerzeit wird im Rahmen der Internet Engineering Task Force (IETF) unter der Bezeichnung SCTP ein neues Protokoll zum Transport von Signalisierungsmeldungen über IP-basierte Netze definiert. Dieser Beitrag beschreibt das Protokoll und die Mechanismen, die es für den sicheren und effizienten Transport von Signalisierungsmeldungen den klassischen Protokollen TCP oder UDP überlegen machen. Des Weiteren werden mögliche Anwendungsszenarien und Interworkingfälle mit klassischen Netzen beschrieben.AbstractWithin the Internet Engineering Task Force a new transfer protocol called SCTP for the transmission of signalling data over IP-based networks is currently being discussed. This article introduces the protocol and the mechanisms it uses for secure and efficient transport of data, as well as properties that make it superior to established protocols like TCP or UDP. Moreover, possible application and interworking scenarios for classical telecommunication networks are described.