Implementation of proportional loss rate differentiation in EDS using Proportional Loss Rate and RED
Abstract
The TCP/IP stack has been mainly designed for elastic traffic (file transfers). It is nowadays recognized that it is not able to efficiently support traffic patterns with completely differing requirements (e.g. applications with delay requirements). Service differentiation at the flow agregate level (DiffServ) is a promising way to implement some form of IP QoS because it is robust and scalable. The EDS PHB is a Diffserv PHB based on both loss rate and delay proportional differentiation. In this report, we present and compare two implementations of the loss rate differenciation in EDS. One is based on the PLR tail-drop like system, the second uses a RED like dropping mechanism.