Optical Network Control and Management

Automatically Switched Optical Network ◽

Control And Management

The task of network control and management is generally realized in two logical planes – control and management – which collaboratively operate to ensure smooth, secure, and survivable traffic flow in the data plane of the network. Some of the functionalities are realized in the control plane, needing real-time execution, such as recovery from network failures, and network reconfiguration due to traffic variation. Other functionalities deal with performance monitoring, configuration management, network security, accounting and billing etc., which are less time-sensitive and are addressed by the management plane. We first discuss the philosophy of multiple-layer abstraction of telecommunication networks, including control, management, and data planes, and then describe various network control and management techniques used in optical networks: operation, administration, and management (OAM) in SONET, generalized multiprotocol label switching (GMPLS), automatically switched optical network (ASON), and software-defined optical networking (SDON) in WDM networks. (141 words)

A Lexicography for the Interpretation of Generalized Multiprotocol Label Switching (GMPLS) Terminology within the Context of the ITU-T's Automatically Switched Optical Network (ASON) Architecture

10.17487/rfc4397 ◽

2006 ◽

Cited By ~ 1

Author(s):

I. Bryskin ◽

A. Farrel

Keyword(s):

Optical Network ◽

Label Switching ◽

Automatically Switched Optical Network

Optical Networks

10.1093/oso/9780198834229.001.0001 ◽

2021 ◽

Author(s):

Debasish Datta

Keyword(s):

Optical Networks ◽

Network Architecture ◽

Communication Systems ◽

Queuing Theory ◽

Optical Network ◽

Network Control ◽

Access Networks ◽

Telecommunication Networks ◽

Passive Optical Network ◽

Switched Networks

This book presents an in-depth deliberation on optical networks in four parts, capturing the past, present, and ensuing developments in the field. Part I has two chapters presenting an overview of optical networks and the enabling technologies. Part II has three chapters dealing with the single-wavelength optical networks: optical LANs/MANs, optical access networks using passive optical network architecture, SONET/SDH, optical transport network and resilient packet ring. Part III consists of four chapters on WDM-based optical networks, including WDM-based local/metropolitan networks (LANs/MANs) using single and multihop architectures over passive-star couplers, WDM/TWDM access networks as an extension of PONs with WDM transmission, WDM metro ring networks covering circuit-switched (using point-to-point WDM and wavelength-routed transmission) plus packet-switched architectures and WDM long-haul backbone networks presenting the offline and online design methodologies using wavelength-routed transmission. Part IV deals with some selected topics in six chapters. The first deals with transmission impairments and power-consumption issues in optical networks, while the next three chapters deal with the survivable optical networks, network control and management techniques, including GMPLS, ASON, and SDN/SDON, and datacenter networks using electrical, optical, and hybrid switching techniques. The final two chapters present elastic optical networks using flexible grid for better utilization of the optical-fiber spectrum and optical packet and burst-switched networks. The three appendices present the basics of the linear programming techniques, noise processes encountered in the optical communication systems, and the fundamentals of queuing theory and its applications in telecommunication networks. (238 words)

Survivability Mechanisms of Generalized Multiprotocol Label Switching

Encyclopedia of Internet Technologies and Applications ◽

10.4018/978-1-59140-993-9.ch083 ◽

2008 ◽

pp. 593-599

Author(s):

M. C.R. Medeiros ◽

N. S.C. Correia

Keyword(s):

Optical Networks ◽

Task Force ◽

Optical Network ◽

The Internet ◽

Core Network ◽

Label Switching ◽

Optical Wavelength ◽

Ip Routers

Internet protocol (IP) over optical (IP-over-optical) networks is the widely accepted solution to meet the ever increasing demands of IP traffic. In an IP-over-optical network, the IP routers are attached to an optical core network, composed by optical cross-connects (OXC) that are interconnected by dynamically established optical wavelength channels called lighpaths (Rajagopalan, Pendarakis, Saha, Ramamoorthy, & Bala, 2000). To control such lightpaths in a dynamic, efficient, and realtime manner, generalized multiprotocol label switching (GMPLS) based control plane has been proposed by the Internet engineering task force (IETF) in the RFC 3945 edited by Mannie (2003).

Documentation of IANA assignments for Generalized MultiProtocol Label Switching (GMPLS) Resource Reservation Protocol - Traffic Engineering (RSVP-TE) Usage and Extensions for Automatically Switched Optical Network (ASON)

10.17487/rfc3474 ◽

2003 ◽

Author(s):

Z. Lin ◽

D. Pendarakis

Keyword(s):

Traffic Engineering ◽

Optical Network ◽

Resource Reservation ◽

Label Switching ◽

Automatically Switched Optical Network ◽

Reservation Protocol ◽

Resource Reservation Protocol

AI-Based Modeling and Monitoring Techniques for Future Intelligent Elastic Optical Networks

Applied Sciences ◽

10.3390/app10010363 ◽

2020 ◽

Vol 10 (1) ◽

pp. 363 ◽

Cited By ~ 4

Author(s):

Xiaomin Liu ◽

Huazhi Lun ◽

Mengfan Fu ◽

Yunyun Fan ◽

Lilin Yi ◽

...

Keyword(s):

Optical Networks ◽

Performance Monitoring ◽

Recent Progress ◽

Optical Network ◽

Data Driven ◽

High Definition ◽

Optical Performance Monitoring ◽

Monitoring Tools ◽

Quality Of Transmission

With the development of 5G technology, high definition video and internet of things, the capacity demand for optical networks has been increasing dramatically. To fulfill the capacity demand, low-margin optical network is attracting attentions. Therefore, planning tools with higher accuracy are needed and accurate models for quality of transmission (QoT) and impairments are the key elements to achieve this. Moreover, since the margin is low, maintaining the reliability of the optical network is also essential and optical performance monitoring (OPM) is desired. With OPM, controllers can adapt the configuration of the physical layer and detect anomalies. However, considering the heterogeneity of the modern optical network, it is difficult to build such accurate modeling and monitoring tools using traditional analytical methods. Fortunately, data-driven artificial intelligence (AI) provides a promising path. In this paper, we firstly discuss the requirements for adopting AI approaches in optical networks. Then, we review various recent progress of AI-based QoT/impairments modeling and monitoring schemes. We categorize these proposed methods by their functions and summarize advantages and challenges of adopting AI methods for these tasks. We discuss the problems remained for deploying AI-based methods to a practical system and present some possible directions for future investigation.