Section 1. Introduction

IP QoS (Quality of Service) refers to the performance of IP packet flow through networks.The main aim being to deliver end-to-end QoS to user traffic.Quality of Service is a set of small metrics, including service availability, delay, delay- variation, throughput, and packet loss rate.

The user has the Internet which has become a powerful consumer and business tool. With IP QoS, service providers can achieve greater profitability through more business and more efficient use of:

This study project deals with the study of the two IP QoS architectures- The different approaches in achieving QoS guarantees, and focussing on adhering to the Service Level Agreements are explored and known.

In addition to the architectural framework, other elements are required to build real world IP networks that meet QoS requirements.Like in the sense that the network must quickly recover from nodal or link failures.The QoS mechanisms at each node must be configured to work in such a way so that end-to-end QoS across the network is delivered.This is a sizably difficult work and takes into account many things to make it happen. The rapid development in the field of IP QoS has given way for a number of reliable components:

IP QoS is a challenging field of the future with newer technologies to explore and newer  horizons to pursue.