Modelling and Simulation of STTP, a Proactive Transport Protocol

In this paper, we present an experimental transport protocol which employs alternative methods of startup and congestion avoidance to those commonly used in implementations of TCP. Through modelling and simulation, we demonstrate how a packet-pair probe may be used to replace traditional slow-start methods and how proactive congestion avoidance algorithms provide smoother traffic flow with lower levels of packet loss and retransmission. We also show how a token bucket may be used to allow bounded burstiness for an Internet connection in order to facilitate an application's Quality of Service. I. OVERVIEW STTP is an experimental transport protocol designed to operate primarily over traditional IP-based Internetworks. It is a Shaped (through use of leaky and token bucket traffic shapers), Token-based (packet acknowledgements are treated as tokens for use in its internal shaping algorithms), Transport Protocol (STTP). STTP is designed as an alternative for the reliable transport transpo..