Abstract
In traditional Generalized Multi-Protocol Label Switching (GMPLS), wide variety of functionalities like, GMPLS signaling GMPLS routing and link management increased the computational complexity of a single GMPLS network node. In concern with this, in order to provide the best paths by concerning effective utilization of network resources and better quality of transmission, a dedicated Path Computation Element (PCE) has been introduced. Software Defined Networking (SDN) is a new paradigm that decouples the network control from the data plane. With Software Defined Networking, the design, build and manage of networks can be made cost effective and dynamic manner, by transforming the traditional networks into open and programmable networks. The objective of this paper is to provide different architectural models of path computation element using Software Defined Networking paradigm. Using these deployment models, a network operator can manage and operate both the circuit switching and packet switching networks, thereby reduce capital expenses as well as operational expenses.
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