Study of optical control plane for translucent WDM networks

Abstract

In this article, we concentrate on the study of control plane and management approaches for translucent WDM networks. A hybrid optical control plane (OCP) is proposed, which needs the extensions of both routing and signaling protocol, to combine the best features of routingbased information updating and signaling-based data collection and path evaluation. Simulations are conducted to compare hybrid OCP with two existing control architectures: signaling-based OCP and routing-based OCP. Numerical results show that hybrid OCP exhibits a lower blocking probability than the other approaches, and also minimizes the stability and scalability problems under various traffic conditions.

A Novel Optical Control Plane for Switching an Electro-Optical Hybrid Node in Translucent WDM Optical Networks

“…This sub-section analyses performance of the proposed OCP, which is named as P-OCP, by means of comparison with the recently proposed hybrid-OCP approach, which is named as H-OCP [13]. The H-OCP approach has been executed for range of different values of a set of specific parameters that adjust in order to determine how the solution space is explored heuristically.…”

“…In order to solve QoT distribution issues, studies in [8][9][10] have proposed the inclusion of QoT parameters within both, the RSVP-TE and OSPF-TE protocols. Recently, studies focussing on GMPLS extensions in the context of regenerator information dissemination have been proposed [11][12][13]. In [11,12], extensions to both, RSVP-TE and OSPF-TE protocols are proposed in order to account for shared regenerators in translucent networks.…”

“…The authors in [13] have concentrated on the study of OCP and management approaches for translucent WDM networks. A hybrid OCP is proposed, which combines the best features of both, routing based information updating and signaling-based data collection approaches thus, necessitating extensions to both, routing and signaling protocols.…”

Distributed Sharing of Functionalities and Resources in Survivable GMPLS-Controlled WSONs

“…To ensure QoT, an impairment-aware control plane is necessary [13][14][15]. Based on the physical impairment information, the optical signal quality can be estimated or measured.…”

“…An alternative is to estimate or analytically compute the optical signal quality using a single or a set of physical performance indicators (such as the optical signal-to-noise ratio (OSNR), the estimated bit error rate, the Q factor) [5,18]. Furthermore, physical impairment parameters can be either disseminated by the OSPF routing protocol (i.e., routing approach) [13,14] or gathered by the RSVP-TE signaling protocol (i.e., signaling approach) extended for QoT support [19].…”