Qos in networking using network Processor based active networks

Abstract

The Internet has grown to hundreds of millions of nodes the huge newlineinstalled base of routers renders changes to the core protocols nearly newlineimpossible At the same time the characteristics of Internet applications newlineproliferate and the increasingly varying characteristics of data streams call for newlineadaptable and wide ranging support by the underlying network In this newlinecontext Active Networks AN have gained a lot of attention recently The newlinegoal of Active Network is to support customized protocol mechanisms that newlinecan be introduced in a running network In order to meet this new Quality of newlineService QoS functionalities need to be introduced to satisfy customer newlinerequirements including efficient handling of both delay critical and bandwidth newlinegreedy applications newlineThe primary goal of QoS is to provide priority including dedicated newlineBandwidth controlled jitter and latency required by some real time and newlineinteractive traffic and improved loss characteristics It is particularly newlineimportant during periods of congestion that traffic flows with different newlinerequirements be treated differently and provided a different Quality of Service newline QoS QoS enables the user to provide better service to certain flows newlineThe main objective of this thesis is to demonstrate an approach to newlineuse the concept of active network as a tool to provide QoS on multimedia newlinetraffics using the Intel s IXP2400 network processor This model aims to newlineprovide the required QoS for different types of flows from authorized users newlineThese requests as active packets contain small programs that trigger the newlinenetwork nodes to reconfigure their QoS settings as specified by the users newline newline