Resource management in differentiated services networks

Abstract: The Differentiated services architecture (diffserv) proposed by the Internet Engineering Task Force (IETF) [1] provides service differentiation in the Internet in an efficient and scalable manner. The central idea of diffserv is that the Type Of Service field (TOS) in the IPv4 header can be used to prioritize traffic in an aggregated manner. In this paper we work on the resource management implementation issues required to support a wide variety of Quality of Service (QoS) traffic streams having different parameters. A well known problem with diffserv [2, 3] is that, being based on aggregate streams, it currently does not support end-to-end QoS. We believe our approach to diffserv can help to achieve dynamically allocated end-to-end QoS using a Bandwidth Broker (BB) architecture. We consider our resource management scheme to be simple and well suited to implementation in a diffserv internet of multiple domains. Bandwidth Brokers (BB) in each domain are the point of control for various activities performed within and between the domains