Abstract
Multi-Protocol Label Switching is useful in managing multimedia traffic when some links are too congested; MPLS Traffic Engineering is a growing implementation in today's service provider networks. In This paper we propose an improvement of MPLS-TE called EMPLS-TE, it is based on a modification of operation of Forwarding Equivalence Class (FEC) in order to provide the quality of service to stream multimedia. The performance of the EMPLS-TE is evaluated by a simulation model under a variety of network conditions. We also compare its performance with that of unmodified MPLS-TE and MPLS. We demonstrate how a small change to the MPLS-TE protocol can lead to significantly improved performance results. We present a comparative analysis between MPLS, MPLS-TE and Enhanced MPLS-TE (EMPLS-TE). Our proposed EMPLS-TE has a performance advantageous for multimedia applications in their movement in a congested and dense environment. EMPLS-TE defines paths for network traffic based on certain quality of service. The simulation study is conducted in this paper; it is a means to illustrate the benefits of using this Enhanced MPLS-TE for multimedia applications.
Highlights
The goal of Traffic Engineering (TE) is to provide Quality Of Service (QoS) to multimedia packets by reservation of the resources and optimum resources utilization [9]
A router placed on the edge of the Multiprotocol Label Switching (MPLS) domain, named Label Edge Router (LER) that is associated to a label on the basis of a Forwarding Equivalence Class (FEC)
In this paper we focus on our paper presented in [1] and Multi-Protocol Label Switching Traffic Engineering (MPLS-TE) as a technology rather used by operators, we make an improvement on MPLS-TE and propose EMPLS-TE (Enhanced MPLS-TE)
Summary
The goal of Traffic Engineering (TE) is to provide QoS to multimedia packets by reservation of the resources and optimum resources utilization [9]. Multiprotocol Label Switching (MPLS) technology [2] allows traffic engineering and enhances the performance of the existing protocols over the traditional IPv4 network. MPLS TE extends current link-state protocols (IS-IS and OSPF) to distribute such information There is another approach to provide QoS to multimedia traffic: DiffServ-aware Traffic Engineering (DS-TE) [7] [6], by using three signaling protocols in MPLS networks: Label Distribution Protocol (LDP) [5], Constraint based Routing LDP (CR-LDP) [3] and Resource Reservation Protocol-Traffic Engineering (RSVP-TE) [4]. In order to provide a good service for transferring multimedia packets that requires a large flow in the MPLS-TE networks we make an improvement to the method of processing speed in the FEC in MPLS-TE.
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