Introduction optical transport networks otns have become a mainstream layer 1 technology for the transport network. Jun 12, 2012 comparing wavelengthswitched and digitallyswitched optical transport architectures. Two generations of otn have already been widely deployed. Jan 20, 2016 the card supports up to twolevel odu4, odu3, odu2, odu1, odu0, and oduflex nested switching functions by interconnecting with the centralized agnostic switch fabric. Operators want to introduce controlplane capabilities based on gmpls to otn to realize the benefits associated with a highfunction control plane e. The interface cores, referred to as spi3 cores, perform the interface functions on the physical layer or link layer side of.
General communication channels 1 and 2 gcc1gcc2 fields are very similar to the gcc0 field except that each channel is available in the odu. So the optical network can be completely transparent. Optical transport network architecture pdf this document provides a tutorial for optical transport network standards and their. Nortel networks gabor simo, updates to key system acceptance tests for g. Optical transport networks have been migrating from sonet technology to wdm. A comprehensive introduction to the terminology and technology that will comprise tomorrows optical transport networks.
The otn framer devices integrate high performance serdes io to allow seamless connection to optical and copper modules. Optical transport network architecture, pdf, print, email. The card supports up to twolevel odu4, odu3, odu2, odu1, odu0, and oduflex nested switching functions by interconnecting with the centralized agnostic switch fabric. Over the years, agilent has been a significant participant in the development of jitter industry standards, with many contributions to. The resulting interfaces thus operate at line rates, roughly 7 percent higher, than the. Everything you always wanted to know about optical. This document provides a tutorial for optical transport network standards and their applications. Telecommunications industry and service provider networks must quickly. Comparing wavelengthswitched and digitallyswitched optical transport architectures.
Cisco ncs 4000 optical transport network otn line cards. Optical transport network architecture pdf download. Otn was designed to provide support for optical networking using wavelengthdivision multiplexing wdm unlike its predecessor sonetsdh itut recommendation g. Agilent introduced one of the first 10 gbs optical channel jitter test sets for measurements on the new itut g. This course is aimed at personnel associated with the telecommunications industry, who would like a good understanding of the technology involved. Basic ont transport structure oadm oadm oadm oadm hubh ub ub client 3r 3r client otn figure 2. Based on experience with the sonetsdh networks, the itut defined a transport network that was optimized for costeffective transparent. Optical transport network interface ic manufacturers spi3 description. Tutorial everything you always wanted to know about optical. Zhang huawei technologies august 2016 rsvpte extension for additional signal types in g. As defined by the international telecommunication union itu, otn is a set of optical network elements connected by optical fiber links. These rates have been derived from the existing sonetsdh rates where the g.
The optical transport network otn defined in itut g. It is also known as optical transport hierarchy oth standard. Fast protection control plane provides fast failure indications to optical switches router based fast reroute frr can be more economical and as. Experts define otn as a collection of optical network elements one that communicate using wavelength division multiplexing wdm. Ppt optical transport network powerpoint presentation. As of december 2009, otn has standardized the following line rates. This white paper provides a tutorial overview of otn, with primary emphasis on itut g. The network provides functionality of transport, multiplexing, routing, management, supervision, and survivability of optical channels carrying client signals. This standard defines a hierarchy among optical network elements and provides for performance management of complex dense wavelength division multiplexing dwdm networks. The thesis will study recent progress in otn, including otn switching ca pabilities. Otn is an industrystandard optical transport protocol itu g. Optical transport network an overview sciencedirect topics.
The optical transport network otn standards, defined by the itut g. The optical transport hierarchy oth is a new transport technology for the optical transport network otn developed by the itu. Functionality of the overhead in preparing the multiwavelength optical network optical transport unit framing structure bit rates and formats permitted for mapping of the clients. It is a standardized method for transparent transport of services over optical wavelengths in dwdm systems. 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. Ethernet and storage area network san signals in a much. It is based on the network architecture defined in itu g. Optical transport network otn tutorial, itut, only covers g. The network provides functionality of transport, multiplexing, routing, management, supervision, and survivability of optical channels. System packet interface level 3 the packet over sonet physical layer level 3 posphy l3 interface defines the interconnection of physical layer devices to link layer devices in pos applications. Over the years, agilent has been a significant participant in the development of jitter industry standards, with many contributions to itut o. Fronthaul network solutions for the cran architecture.
Optical transport network otn is a protocol for sending network messaging over optical fiber networks. Also commonly called digital wrapper, otnor optical transport networkingis a nextgeneration, industrystandard protocol that provides an efficient and globally accepted way to multiplex different services onto optical light paths. Understanding jitter and wander measurements and standards. The disadvantage is that the equipment cost is relatively higher, and a low cost solution needs to be developed. With the performance of an otn switching open pdf file anchor tag based network. The white paper also discusses various constraints that influenced the development of g. The experimental exp field is a field that is not subject to standards and is available for network operator applications. 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. 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. The optical transport network otn architecture is specified in itut rec. Everything you always wanted to know about optical networking. Optical transport network otn primer searchnetworking. Itut series g supplement 43, transport of ieee 10g baser in optical transport networks otn. Optical transport network otn fujitsu united states.
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