Cross Stratum Optimization (CSO) Enabled PCE Architecture

Applications like cloud computing, video gaming, HD Video streaming, Live Concerts, Remote Medical Surgery and other applications are offered by Data Centers. These data centers are geographically distributed and connected via a network. Many decisions are made in the Application space without any concern of the underlying network. Cross stratum application/network optimization focuses on the challenges and opportunities presented by data center based applications and carriers networks together [1]. Constraint-based path computation is a fundamental building block for traffic engineering systems such as Multiprotocol Label Switching (MPLS) and Generalized Multiprotocol Label Switching (GMPLS) networks. [2] explains the architecture for a Path Computation Element (PCE)-based model to address this problem space. This paper presents Cross Stratum Optimization (CSO) enabled Path Computation Element (PCE) architecture as a building block to achieve Cross Stratum application/network optimization.