All Programmable and Synthetic Optical Network: Architecture and Implementation

Abstract

This paper reports on the design, implementation, and evaluation of a multitechnology, multirate, and adaptable network architecture for metropolitan/edge areas. It is empowered by programmability in control and data planes, providing users with an open network platform to redefine and optimize its behavior and performance. It uses a hybrid data plane of fixed-grid [(sub)wavelength] and flex-grid systems to support a broad range of data rates (1 to 555 Gb∕s). The programmability in the data plane is achieved by building the nodes with a modular and flexible architecture (architecture on demand nodes) to achieve different functionalities (fixed-/ flex-grid switching with or without time multiplexing) on demand. A centralized, modular, and scalable control framework has been constructed for this network. It uses a set of software plug-ins designed for architecture synthesis and adaptation for policing network resources access and as algorithms of routing and resource allocation for network operation. The proposed hybrid network architecture, along with allocation policies and resource allocation algorithms, is evaluated through simulations across a broad range of traffic profiles with bandwidth requests stretching from 1 to 400 Gb∕s. Finally, the programmable dataplane/control-plane architecture has been implemented in an experimental testbed and the functionality of the node and network elements individually and together have been tested, demonstrating the feasibility of the system.

Dynamic spectrum and core allocation reducing costs of architecture on demand nodes

“…An AoD node can dynamically reconstruct its structure according to switching or signal processing requirements 4 . Some experiments prove that AoD nodes provide high flexibility and scalability to SDM 5,6 . These experiments assume the condition that services have diverse granularities (e.g.…”

Toward Terabit Autonomic Optical Networks Based on a Software Defined Adaptive/Cognitive Approach [Invited]

“…The benefits and challenges of extending SDN concepts to various transport network architectures that include optical wavelength and fiber switches, circuit switches, and subwavelength optical burst switches are reviewed in [18]. Recent works on SDN applied to metropolitan networks have been reported in [19] on the design, implementation, and evaluation of a multitechnology, multirate, and adaptable network architecture for metropolitan/edge areas. 1 The CPqD (Research and Development Center in Telecommunications) is an independent institution whose main objectives are to increase Brazil's competitiveness and to further the digital inclusion of the country's society, based on innovative information and communication technologies (ICTs).…”

“…The proposed hybrid network architecture in [19] is evaluated through simulations across a broad range of traffic profiles with a scalable bandwidth request. On the other hand, in the access optical network, SDN allows flow-based traffic steering in a proactive or reactive manner.…”

Resource management and control in converged optical data center networks: Survey and enabling technologies

“…Obviously, component-level parameters and SLAs are the inputs of the cognition cycle, while the output is the final action taken by the data plane. On the other hand, considering the multi-rate transmission, the network decision module designs rules for the resource assignment, which is similar to [52]. More specifically, we utilize the RWTA algorithm to serve traffic requests with the line rate lower than 10Gb/s, the RWA algorithm to serve 10~100Gb/s traffic requests, and the RSA/IA-RWA algorithm to serve traffic requests with the line rate larger than 100Gb/s.…”