للكاتب :
F. Bayoumi
ABSTRACT
With the deployment of electronic services such as e-learning, e-business, etc, through the
Internet, there is a great need to guarantee the provided Quality of Service (QoS). An
underlying IP-based network provides no preferential treatment to IP packets. Traffic
Engineering (TE) enhances the performance and utilization of an operational network at both
the traffic and resource levels. However the best effort characteristic of IP makes it unable to
support TE. Multiprotocol Label Switching (MPLS) is a technique, recently introduced, to
support TE. This study implements MPLS with DiffServ to evaluate the End to End QoS, for
real-time application in heterogeneous networks. To prove that simulation under different
scenario are applied. Simulation results show that MPLS generally allows for faster packet
transfer than IP is true. Also in congestion case, MPLS greatly improves the network delay
for real time application and makes it not sensitive to traffic variations. At the end of the
paper the conclusion and future works are given.