In 2012, half a zettabyte will cross the global network impact on the network. They are based on optical technologies and components, and are used to route, groom, and restore wavelength levels and wavelengthbased services. Otn interfaces difference between otu1,otu2,otu3,otu4. Otn as a set of various elements that are known as optical network elements, these elements are connected by optical fiber links, which enables to cater multiplexing, the functionality of transport, survivability of optical channels, which assist in carrying client signals, switching, signal management, and supervision. Typical functions include multiplexing, transport, switching, management, supervision, survivability etc.
Optical transport networ tutorial by guylain barlow white paper introduction the amount of data traffic relative to voice traffic on optical networks and the total traffic volume continues to increase. Today, otn is being demanded by carriers worldwide as not just a pointtopoint technology but as an entirely new network layer to transition away from sonet. It is based on the network architecture defined in itu g. Otn was designed to provide support for optical networking using wavelengthdivision multiplexing wdm unlike its predecessor sonetsdh itut recommendation g. Pdf optical transport networks otn technology and test. The tcm active act field is reserved for future use to activatedeactivate tcm channels. An optical transport network otn is an interconnection of optical switches and optical fiber links. Generally speaking, otn is a network interface protocol put forward in itu g. Optical transport network otn primer searchnetworking. Packet optical with cem is a great way to modernize, scale, trim opex and capital expenditures capex, and prepare your transport network for future growth. Optical transport network market global industry analysis. From a highlevel architectural perspective, one would not expect otn architectures.
While no text can be truly stateoftheart in the fast moving area of optical networking, this one comes as close as possible. Sonetsdh standard was carry telephone speech, and it took many adaptations for the transport of frames and type of ip packets, atm, or others. White paper optical transport networks otn test by reza vaezghaemi, ph. Architecture of optical transport networks in force prepublished superseded and withdrawn components.
Otn is an industrystandard optical transport protocol itu g. Otn open transport network is a unique system that can integrate virtually all existing applications for voice, data, lan, video, scada, etc. Two generations of otn have already been widely deployed. This standard defines a hierarchy among optical network elements and provides for performance management of complex dense wavelength division multiplexing dwdm networks. Cisco visual networking indexforecast, 20072012 mobile data to grow at 125% cagr 20072012 with video, consumer ip quadruples by 2012 requirements. The optical transport network otn, as the underlying infrastructure network of networks should be capable of transporting a wide variety of client signals, independent of their format.
The physical layer of the optical transport network otn is the weakest layer in the network, as anyone can access the. Understanding optical transport network otn to cvtdallas. The optical transport network otn and wdm layers make up a generic layer1 transport network, enabling different service types to coexist and. Otn optical transport network consists of various optical network elements connected by optical fiber lines. Experts define otn as a collection of optical network elements one that communicate using wavelength division multiplexing wdm. Application note flexible optical transport network otn. Fronthaul network solutions for the cran architecture 5g fronthaul network changes and wdm otn bearer solution unified backhaul of fixedmobile convergence and otn bearer solution sdnbased optical networks effectively support the slicing and intelligent operation of 5g networks otn key technologies in 5g bearer network summary appendix 01 02. The otn product range is simple to install, configure and maintain. Pdf roadmap on optical transport network technologies. Optical transport network architecture pdf download. Michael jamgochian, alcatellucent understanding optical transport network otn is key for success in addressing the emerging needs of next generation transport networks.
A practical vision for optical transport networking. Optical transport network an overview sciencedirect topics. Introduction with an ever rising demand for traffic over the internet, telecommunication providers are struggling to develop new ways to deal with it. These nes are able to provide functions such as transport, multiplexing, routing, management, supervision, and protection survivability of client signals, according to the requirements specified in rec. Fiber capacity the first implementation of what has emerged as the optical network began on routes that were fiber limited. All in all, the charming of the otn can be translated into two words. The optical transport network otn standards, defined by the itut g. Optical transport network otn technology represents both a technical leap forward in optical networking over sonetsdh and a business opportunity for carriers and service providers alike. In summary, optical transport networking has come of age.
Optical transport networks training otn training course. They transmit bits using various encoding and multiplexing techniques. Sometimes, its also called the digital wrapper technology which provides an efficient and globally accepted way to multiplex different services onto optical. Optical fiber networks have high capacity can be used for providing the high bandwidth services even in wireless, infrared means high bandwidth connectivity. Otn optical transport network otn an otn network is composed of a set of optical nes connected by optical fiber links. Pdf optical transport network otn tutorial disclaimer.
The optical transport network otn architecture is specified in itut rec. Optical transport network otn fujitsu united states. The optical signal leaves the optical transmitter at full strength but as it travels many kilometers down the fiber, it falls victim to the absorption, dispersion, distortion and scattering effects. Solution options alison izard there are a number of options for modernizing your transport network, including native tdm switching over the optical transport network otn, a complete overlay network with routers and dwdm, and finally migrating to packet optical using circuit emulation cem. The network provides functionality of transport, multiplexing, routing, management, supervision, and survivability of optical channels carrying client signals. Optical transport network architecture pdf this document provides a tutorial for optical transport network standards and their. The optical transport hierarchy oth is a new transport technology for the optical transport network otn developed by the itu. Optical transport network otn flexible and efficient protocolagnostic transport defined in g. Sep 11, 2014 this video describes what was the need for adopting otn optical transport network and the benifits.
Although otn and sonetsdh have similarities, there are also some significant design differences. The optical transport network is designed to deliver a transparent framework to efficiently carry diverse traffic types, which can decrease acpexopex in networks and at the same time address dramatic shifts in traffic types. With the advancements in internet of things iot and machinetomachine m2m communications, a substantial amount of data is expected to be generated. Cisco ngn transport solutions cisco global home page. They are used for supporting various functionalities in order to maintain optical links carrying client optical signals. 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. This white paper provides a tutorial overview of otn, with primary. The optical transport network otn defined in itut g. In future optical networks, optical packets will be transported in specific wavelength bands within a wavelength routed optical transport network.
Optical transport networking otn, as shown in the following figure, represents a natural next step in the evolution of transport networking. Optical transport network otn is a protocol for sending network messaging over optical fiber networks. Looking for network architecture that will enable you to migrate from a circuitswitched transport network to a futureproof packetbased network. Optical transport network modernization solution cisco. The transmission over the optical networks takes place by transmitting the bits within. Please increase the volume when you watch the last slide in the webinar because of improper. Itut defines an optical transport network otn as a set of optical network. Optical transport network architecture, pdf, print, email. The successor of sonetsdh has been launched in early 2002 and standardized by itut as the otn optical transport network. Paul goransson, chuck black, in software defined networks, 2014. In the transport core, bandwidth requirements spawned the creation of the optical transport network otn described in general terms in international telecommunications uniontelecom itut g.
Optical transport network defined by the itu telecommunication standardization sector itut, otn is a set of optical network elements one that are connected by optical fiber links. Otn is a digital wrapper that provides an efficient and globallyaccepted way to multiplex different services onto optical light paths. Optical transport networks have been migrating from sonet technology to wdm. The report optical transport network market by technology wdm, dwdm, by components optical switch, optical packet platform, by services network design, network support, by end user, by regions worldwide market forecast and analysis 2014 2019 segments the global market into various subsegments with indepth analysis and forecasting of revenues.
Find out how optical transport network otn, a multi network protocol compatible with ethernet, helps you build video, mobile, internet, and storage services on a common server layer. 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. Optical transmitter and transport time r mark symbol 1 space symbol 0 optical t bit. Optical network drivers many factors are driving the need for optical networks.
As defined by the international telecommunication union itu, otn is a set of optical network elements connected by optical fiber links. With the explosion of digital traffic and the evergrowing array of bandwidthhungry applications, otn optical transport network evolves from pointtopoint dwdm remedies to scalable and robust optical networking applications that cater to a wide variety of client signals with equallyvaried service requirements. Its role is to channel packages on routes to 2,5, 10 and 40 gbits. Together, these fundamental principles form the basis for the notion of optical data networking. The cisco network transport modernization solution can be used to introduce greater network automation and the digitization of business.
Optical transport networks training course handson. The optical transport network market was valued at usd 23. Optical transport networks training tutorial course. Oct 25, 2017 for the love of physics walter lewin may 16, 2011 duration. An additional interface type, which is not part of the g.
Optical transport network otn for high speed service. Jul 20, 2016 inspired by the sonetsdh network, itut itu telecommunication standardization sector has defined the optical transport network otn to achieve a more costeffective high speed network with the help of wdm technology. The physical layer of the optical transport network otn. Here, it is not possible for the errors to be corrected by the dut. This tutorial is divided into distinct chapters, which explains the structural features. Alan repech, system architect, cisco systems optical transport this book provides the most comprehensive coverage of both the theory and practice of optical networking. 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. A comprehensive survey akhilesh thyagaturu, anu mercian, michael p. What is otn optical transport network computer notes. As of december 2009, otn has standardized the following line rates. The promise of the optical transport network otn is designed to address these issues by delivering a transparent framework to efficiently carry diverse traffic types. A few of the most important reasons for migrating to the optical layer are described in this module.
Optical transport networks training by tonex provides a comprehensive technical introduction to optical transport networks. Figure 1, otn has been optimized to be the transport protocol to carry a converged mix of different types of client signals in a manner that efficiently uses the optical layer resources. This paper lays out this practical vision, placing it in context with other networking trends. Application note flexible optical transport network otn access up to 100g a transition is occurring in optical transport networking as network operators move from using otn solely as a digital wrapper for enhanced dense wavelength division multiplexing dwdm performance to using it as a switching mechanism for the next.
Optical transport networks otn technology and test applications. The cisco network convergence system 4200 series delivers bestinclass circuit emulation, optical transport network, and carrier ethernet capabilities. Optical networks are telecommunications network of high capacity. Otn switching is added, organizations can stop using manual fiber connections for. Optical transport network market growth, trends, and. Carriers are also placing particular emphasis on otn in the metro area, where. As we known, the core of most current operator networks is the asynchronous digital hierarchy synchronous optical network sdhsonet, which has always offered good fault management, performance monitoring, predictable latency, a protection mechanism and, of course, synchronization. Optical transport network otn is a series of standards created to combine the benefits of sonetsdh with the bandwidthexpanding capabilities of dense wave division multiplexing dwdm in order to build more network functionality into optical networks. In this project we implement the otn framer, when our main goal is data.
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