Optical transport network architecture pdf download

Experts define otn as a collection of optical network elements one that communicate using wavelength division multiplexing wdm. The new network is an endtoend ip and optical network enabled with segment routing. An one may retime, reamplify, reshape but it does not have to be 3r it can be purely photonic. Pon is passive optical network featured with onetomultiplepoint architecture.

Optical transport network an overview sciencedirect topics. White paper open optical transformation introduction navigating the transition from todays proprietary optical networks towards an open, automated network architecture is now within the reach of service providers. Most service providers would agree that current and future optical transport services can be most efficiently supported over optical transport network otn architecture. Remembering that reach is a key issue for optical networks, one issue with 10g, and larger, network modulation is that the transport spectrum is wider than for 2. According to ihs, cisco leads in the optical market. Comparing wavelengthswitched and digitallyswitched optical transport architectures. Paul is also coauthor of the otn experts book at right. The project is an engineeringfocused effort led by major operators, technology vendors and research institutions. Otn was designed to provide support for optical networking using wavelengthdivision multiplexing wdm unlike its predecessor sonetsdh itut recommendation g. Oracle technology network, the official onlineoffline. Tson proposes a flexible and tunable timewavelength assignment along with oneway treebased reservation and node architecture. Optical transport network architecture pdf download. For this task, the definition of the layered architecture model for the optical transport network is considered to be a starting point. A set of optical network elements connected by optical fiber links, able to provide functionality of transport, multiplexing, switching, management, supervision and survivability of optical channels carrying client signals.

An optical switching architecture for data center networks with unprecedented flexibility kai chen. Dense wave division multiplexing dwdm deliver massive scale, touchless programmability, flexible orchestration of wavelengths and ease of use. A byte number cn of a client signal transported in a current otn frame period is generated according to a client signal clock and a system clock. Network planning and cost analysis for optical transport. Synchronous digital hierarchy sdh columbia university. Bus topology figure below shows a generalised bus topology network. The optical transport network otn and wdm layers make up a generic layer1 transport network, enabling different service types to coexist and. Northwestern university, yuiuc, znec labs america, inc. All the networks using optical fiber as transmission medium optical networks when transmitted signal remains in optical form till its arrival at destination all optical network. A method for transporting a client signal in an optical transport network otn includes steps as follows.

Odtn is intended to open the optical network for choice and innovation by disaggregating the components of the network and by providing open software that can control a multivendor assembly of different components. Opticalnetwork drivers many factors are driving the need for optical networks. Integrate your ip routing and optical transport networks into a unified infrastructure with nokia technology. Deploying a fiber optic physical infrastructure within a converged plantwide ethernet architecture fiber optic cabling systems overview figure 3 permanent link diagram the typical channel is composed of multiple assemblies connected by a combination of the optical fiber connectors on the cable assemblies ma ting into adapters. Looking for network architecture that will enable you to migrate from a circuitswitched transport network to a futureproof packetbased network. This paper lays out this practical vision, placing it in context with other networking trends. Optical transport network market growth, trends, and.

Gigabit passive optical network gpon tdm architecture, 2. This book fills the gap between optical network engineering and routingsignalinghelping both optical and ip professionals build networks that are more robust, flexible, manageable, and profitable. Paul goransson, chuck black, in software defined networks, 2014. Advantages of optical networks high speed capability theoretically possible to send 50. A use case describes the actions taken by a hypothetical set of actors as they work to achieve a goal. The otn layer evolved over layer1 of the dwdm network for enabling more efficient convergence of traditional sonetsdh transport and new data services, into a common optical transport network layer. It is based on the network architecture defined in itu g. Impact of 5g network architecture changes on bearer networks fronthaul network solutions for the cran architecture 5g fronthaul network changes and wdmotn bearer solution unified backhaul of fixedmobile convergence and otn bearer solution sdnbased optical networks effectively support the slicing and intelligent operation of 5g networks. Pdf an optical sdn controller for transport network. The optical transport hierarchy oth is a new transport technology for the optical transport network otn developed by the itu. A few of the most important reasons for migrating to the optical layer are described in this module. Investor relations new converged sdn transport solution.

This is the third post in a series highlighting otn technologies. This paper proposes an architecture for software defined optical transport networks. Optical network terminology sonetsdh synchronous optical network later called synchronous digital hierarchy this standard defines a synchronous frame structure for transmitting time division multiplexed signals. Basic concepts in optical networking optimization of optical network design. Optical network drivers many factors are driving the need for optical networks. As illustrated in figure 1, a data center contains a number of servers, where the applications are hosted. With the advancements in internet of things iot and machinetomachine m2m communications, a substantial amount of data is expected to be generated. As shown in the following image, it comprises of optical line terminal olt, optical network unit and passive optical splitter. Open transport network, a specific ringbased telecommunication network architecture. The optical transport network otn standards, defined by the itut g. Architecture of optical transport networks in force prepublished superseded and withdrawn components. A practical vision for optical transport networks one that is widely deployable, highly reliable and maintainable, readily evolvable, and demonstrably cost effective is now at hand. Disaster recovery from customer premise disaster recovery solutions for customer premises or that of any thirdparty provider, minimize downtime and deliver costeffective levels of resiliency for mission.

A roadmap for transport network modernization cisco. Youll like the benefits of one network as nimble as the cloud. Itut defines an optical transport network otn as a set of optical network elements one connected by optical fiber links, able to provide functionality of transport, multiplexing, switching, management, supervision and survivability of optical channels carrying client signals. It delivers guaranteed subwavelength and multigranular network services without wavelength conversion, timeslice. Jul 24, 2003 optical network control is the first expert guide and singlesource reference for controlling and managing optical networks. Us7978712b2 method and apparatus for transporting client. Optical transport use cases open networking foundation. Synchronous digital hierarchy sdh definition synchronous digital hierarchy sdh and synchronous optical network sonet refer to a group of fiberoptic transmission rates that can transport digital signals with different capacities. A demonstration usecase of an openflowenabled optical virtual switch implementation managing a small optical transport network for. Optical network control is the first expert guide and singlesource reference for controlling and managing optical networks. The optical layer provides lightpaths to other layers such as the sonetsdh, ipmpls, and ethernet layers, as well as the electronic layer of the optical transport network otn, which includes the the optical channel transport unit otu and optical channel data unit odu sublayers see section 6.

Overview this tutorial discusses synchronous transmission standards in world public telecommunications networks. It provides very exhaustive and meticulous coverage of all aspects of dwdm technology ranging from the simplest of concepts in optical networking to the different intricacies involved in designing cost effective and efficient networks. They transmit bits using various encoding and multiplexing techniques. Optical transport network layered architecture for the. Dwdm network designs and engineering solutions is truly one of its kind.

Draw architecture of optical transport networks otns and. Optical fiber networks have high capacity can be used for providing the high bandwidth services even in wireless, infrared means high bandwidth connectivity. Network planning and cost analysis for optical transport networks with different switching solutions marisa vale loureiro, joao pires, joao miguel santos abstract with the great evolution of current transport networks and its rapid transformation, one of the main concerns with the fiber optics and its flow, is studying the. Paul littlewood is a principal engineer in cienas cto team, holds 7 patents in optical networking, and currently focuses on network architecture evolution, metro network design, and multilayer networking. Optical transport network architecture, pdf, print, email. The cisco network convergence system 4200 series delivers bestinclass circuit emulation, optical transport network, and carrier ethernet capabilities. History of pon the first passive optical network pon activity was initiated by the fsan group in the mid1990s. If the cn of the otn frame falls in a certain range, a predetermined area in an optical channel payload unitk opuk overhead field is identified as. This is a critical milestone which has completely transformed pldts network transport architecture, delivering on its promise to build one of the most modern transport networks in asia. The rise of open standards, apis and opensource reference platforms has accelerated innovation to drive more. Fractions of the optical power on the bus aretapped off to provide a signal to each subscriber.

An optical transport network otn is an interconnection of optical switches and optical fiber links. The actors may be human, but they are often software entities or organizational entities. It concentrates on different parts of the transport network architecture, including optical transponders, line systems, ip access devices, open apis and network simulation and planning tools. In summary, optical transport networking has come of age. A practical vision for optical transport networking. A byte number cn of a client signal transported in a otn frame period is generated according to a client signal clock and a system clock. Optical transport network, a telecommunication network standards framework for optical networks. The bus is a high bandwidth optical fibre which traverses the entire distribution area. Download this press release pdf format opens in new window.

Simple optical network architectures broadcast and distribution networks. If the cn of the current otn frame falls in a certain range, a predetermined area in an optical channel payload unitk opuk overhead field is. Abstract data center networks dcns form the backbone in. Ontario telemedicine network, a notforprofit, ontario funded telemedicine organization. The otn standards have been evolving within the itu since the early 90s, and most recently have been completely revised with respect to a standards.

Ppt optical transport network powerpoint presentation. Optical transport network otn is a protocol for sending network messaging over optical fiber networks. Deploying a fiber optic physical infrastructure within a. Stmxx synchronous transfer module each bit rate is a multiple of the lowest level oc1 or stm1.

Us8406236b2 method and apparatus for transporting client. Dec 19, 2012 for this task, the definition of the layered architecture model for the optical transport network is considered to be a starting point. Otn is an industrystandard optical transport protocol itu g. The only report of its kind, this report evaluates the top optical network equipment vendors on criteria using concrete data and metrics, direct feedback from buyers, vendor market share, market share momentum, brand recognition, and reputation for innovation. Fiber capacity the first implementation of what has emerged as the optical network began on routes that were fiber limited. Figure 1 data center interconnect, alloptical network. Optical transport use cases optical transport working group. Optical transport network layered architecture for the moonet. Although much of the infrastructure in your optical transport networks is working, and innovations continue, major problems within your legacy sonetsdh network architecture have become a significant barrier to business growth. The sdn controller includes a network abstraction layer allowing the implementation of cognitive controls and. It can be used for equipment modelling, network access modelling, and the network resource modelling.

The optical transport network market was valued at usd 23. Extend your network to connect your other business locations or data centers in a metro area or long haul with our wavelength service. Optical transport network architecture pdf this document provides a tutorial for optical transport network standards and their. All the networks using optical fiber as transmission medium optical networks when transmitted signal remains in optical form till its arrival at destination alloptical network.