Policy Based Architecture for QoS over Differentiated Services Network

Abstract

Current Internet architecture is based on 1M Best Effort (BE) model, where pachts can be dropped indiscriminately in the event of congestion. This architecture attempts to deliver all traffic as soon as poMible within 1M limiU of its abilities, but without any guarantees about throughput, delay and pacht loss etc. Though 8Ucha rru:xJeJworks well for certain traditional appllcations such as FTP, E-mail and less QoS constrained applications, it can be intolerable for MW{y emerged real-time, multimedia applications such as Internet Telephony, ruko-Ccnferencing and ruleo on- Demand. This paper is based on the on-going research activities being carried out by various researchers in the area of QoS and proposes a Policy Based Network (pBN) architecture for 1M Differentiated Services (Dif}serv) Networlc. Policy Based Networlcing received much attention recently as the devices within the networks can be implemented with greater control Our proposed architecture is based on the functionalities defined within the existing IETFIDMTF Policy architecture, with an objective to achieve QoS through proper Resource management techniques.