QOS parameter comparison of DiffServ-aware MPLS network using IPv4 and IPv6

To overcome Quality of Services (QoS) limitations in IP networks, Multiprotocol Label Switching (MPLS) is being considered as one of the appropriate solutions. In this paper an attempt has been made to make use of MPLS with Traffic Engineering (TE) to overcome these limitations by distributing and rerouting the traffic through underutilized paths that may not be shortest to overcome congestion and improve QoS parameters. Differentiated Services (Diffserv) has been used as QoS implementation mechanism. Comparison of delay, jitter, packet loss and throughput as QoS parameters has been done using IPv4 and IPv6. It has been seen that using IPv6 there is an improvement in QoS performance of the said applications with a substantial impact on video conferencing application over IPv6.