Abstract
This paper studies the performance of Traffic Engineering (TE) signal protocols used for load balancing in Multi-Protocol Label Switching (MPLS) networks, namely; Constraint Based Routed Label Distribution Protocol LDP (CR-LDP) and Resource Reservation Protocol (RSVP). Furthermore, the performance of an MPLS network uses these TE signal protocols is compared to that of a conventional Internet Protocol (IP) network. Different applications including voice, video, File Transfer Protocol (FTP) and Hyperlink Text Transfer Protocol (HTTP) are used for the performance evaluation. Simulation results show superior performance of the MPLS network with CR-LDP TE signal protocol in all tested applications.
Highlights
In the last years there have been an enormous growth in the use of Internet, and new real-time connection-oriented services like streaming technologies and missioncritical transaction-oriented services are in use and new ones are currently emerging
This paper studies the performance of Traffic Engineering (TE) signal protocols used for load balancing in Multi-Protocol Label Switching (MPLS) networks, namely; Constraint Based Routed Label Distribution Protocol LDP (CR-LDP) and Resource Reservation Protocol (RSVP)
RSVP TE signal sets the path at the beginning of simulation time, but the problem is that it periodically sends a refresh message to each LSR, which introduces additional delay
Summary
In the last years there have been an enormous growth in the use of Internet, and new real-time connection-oriented services like streaming technologies and missioncritical transaction-oriented services are in use and new ones are currently emerging. Providing the Real-time applications on Internet is a challenging task for the conventional IP networks as it uses best-effort services which doesn’t provides guarantee quality of services and Traffic Engineering (TE) [2]. IP is connection less best effort protocol that works effectively in data networks with no QoS requirements, MPLS merges the flexibility of the IP routing protocols with speed that ATM switches provide to introduce fast packet switching in frame-based IP networks [3]. MPLS as a traffic-engineering tool has emerged as an elegant solution to meet the bandwidth management and service requirements for generation Internet Protocol (IP) based backbone networks [4]. MPLS was devised to convert the Internet and IP backbones from best effort data networks to business-class transport mediums capable of handling traditional real time services [5].
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