Implementation of Quality of Service (QoS) in Multi Protocol Label Switching (MPLS) networks

The recent evolution of IP networks are seeing IP applications becoming more complex and requiring higher bandwidth consumption. More recently, IP networks are employing Multi Protocol Label Switching (MPLS) which offers better switching and enables Virtual Private Network (VPN). However, the service quality is becoming a major issue in MPLS networks due to having to accommodate the higher bandwidth consumption by certain applications such as voice over IP (VoIP), client-server and peer-to-peer applications, java applications and customized applications. This paper will focus on the implementation of Quality of Service (QoS) in MPLS networks using the java network simulation tool called J-SIM. There are many types quality of service can be offered in MPLS network and one of them is Differentiated Services or Diffserv which is being used in this work. This paper presents the QoS benefits of Diff-Serv aware MPLS networks when simulating the network using J-Sim. Outputs such as throughput and packet drops will be discussed in this paper also.