The pos interfaces deliver highperformance, powerful features and a full range of interface types, speeds, and. Eopos is a standardized method for transporting native ethernet frames over the existing telecommunications optical infrastructure use both the established plesiochronous digital hierarchy pdh and synchronous digital hierarchy sonet sdh transport technologies. The following is a sample of the cisco pos shared port adapters available on the asr platform. The mspp base offers several advantages for delivering ethernet over sonet eos access and backhaul services. Packet over sonet pdf packet over sonet pos is a highly scalable protocol that overcomes many of the ineffi ciencies of atm, while providing legacy support to internetworks with.
To provide aggregation services over an existing sonet infrastructure, cisco 7600 series routers can be configured to support various sonet interface cards, such as the cisco 2 and 4port oc12cstm4 packet over sonet pos enhanced optical services module osm. Sonet and sdh define a set of physical layer standards for communications over optical fiber. The objective of this tutorial is to present an overview of these ethernet over sdh eos technolo gies, focusing on their performances. Packet over sonetsdh, abbreviated pos, is a communications protocol for transmitting. Sun oc48 packet over sonet adapter installation and users guide. Sonet synchronous optical networking sdh fiber optic. The working and protect circuits are synchronized themselves within each router or routers in which they terminate over an independent communication channel. Packet over sonet to ethernet switch application guide cstapos2eugd rev 03 motorola general business information application feature overview the enetoc3switch application is a layer 23 switch that has 4 oc3c, 4 10100 ethernet and 1 gigabit ethernet port. Packetoversonet pos is a standardized way for mapping ip packets into sonet sdh frames. Leveraging todays optical network for nextgeneration ethernet access. I will attempt to cover both sonet and sdh in this presentation. Then at universal switch a, the ethernet is extracted from sonet sdh and mapped directly to otn for. A ds0 is the voice line that is typically hardwired into homes.
This channel does not involve direct communication through the working and protect circuits. Understanding the basic differences between sonet and sdh. Tdm architectures are not ideal solutions for transporting data. Automatic protection switching of packetoversonet circuits. In our paper, we will demonstrate that sonet and rpr could be integrated together. Pdf files offer several ways for moving among the documents pages, as follows. Ep1926264b1 sonet adddrop multiplexer with packet over.
Pm5352bi datasheet, pm5352bi pdf, pm5352bi data sheet, pm5352bi manual, pm5352bi pdf, pm5352bi, datenblatt, electronics pm5352bi, alldatasheet, free, datasheet, datasheets, data sheet, datas sheets, databook, free datasheet. Csop channelized sonetsdh over packet smart sfp converts a fully channelized sonet sdh signal to a packet stream using rfc4553 satop tdm over packet pseudowire technology. Packetoversonet pos is a standardized way for mapping ip packets into sonetsdh frames. Quad 155 mbits atm and packet over sonet sdh physical. Eopos is a standardized method for transporting native ethernet frames over the existing telecommunications optical infrastructure use both the established plesiochronous digital hierarchy pdh and synchronous digital hierarchy sonet sdh transport. Ethernet over pdh over sonet sdh eopos is one of many techniques that provided ethernet connectivity over nonethernet networks. To help optimize the transport of ethernet over sonet sdh links, two new technologies have been standardized. Packet routers multi service routers sonet sdhadddrop mux for packet data applications sonet sdhatmpos test equipment cy7c9532v oc48 sonet sdh transceiver cy7c9536 packet over sonet sdh ic posic48 atm sar or wan data link layer or network processor optical transceiver utopia posphy level3 bus 16bit bidirectional bus. Introduction packet over sonet sdh pos is an emerging technology for carrying ip and other data traffic over the sonet sdh1 backbone.
This module provides command line interface cli commands for configuring packet over sonet sdh pos on the cisco asr 9000 series router to use commands of this module, you must be in a user group associated with a task group that includes appropriate task ids. Ip over sonet october 27, 2008 abstract the explosive growth in internet traffic has created the need to transport ip on highspeed links. Packet over sonet switch application guide cware software toolset, version 2. Quad 155 mbits atm and packet over sonet sdh physical layer device. The data structure is then converted into one or more packets and sent across the packet network. Tpop transparent pdh over packet smart sfp converts e1 or t1 also known as ds1 traffic to a packet stream using rfc4553 satop tdm over. Cisco xfp modules for 10 gigabit ethernet and packet over. Zelig corrigent systems april 2007 synchronous optical networksynchronous digital hierarchy sonet sdh circuit emulation over packet cep status of this memo this document specifies an internet standards track protocol for the internet community, and requests discussion and suggestions for improvements. Which of the following is not a method for connecting pos to network media. Synchronous optical networking sonet and synchronous digital hierarchy sdh are standardized multiplexing protocols that transfer multiple digital bit streams over optical fiber using lasers or lightemitting diodes leds. To help optimize the transport of ethernet over sonetsdh links, two new technologies have been standardized.
The cisco 12000 series of packet over sonet sdh pos line cards deliver stateoftheart technology to costeffectively scale carrierclass ipmultiprotocol label switching mpls packet infrastructures to meet the needs of service providers around the world figures 1 and 2. The ip packet is encapsulated in an hdlc packet, using hdlc bit stuffing as needed. Abstractthere is a growing trend in the power utility industry to move away from traditional synchronous optical. For ppp over sonetsdh, the entire sonetsdh payload sonet sts. Packet over sonet switch application guide describes the key characteristics of the posoc48sc application. Scaling ethernet over sonet sdh with a packet switched core another option is to leverage mtera utp sonet sdh to packet interworking, taking ethernet over sonet sdh traffic from the adm rings, terminating the sonet sdh, and then mapping the ethernet traffic into a packet switching instance on the mtera utp.
Packet over sonet pos is a standard that maps ip packets into sonet frames. This application is very similar to the comboswitch. Synchronous optical network sonet traffic is sent across a packet network. Ethernet over sonet using a variety of proprietary approaches. Packet over sonet was developed because there was no other way to transport data over a sonet network. A sonet transmission is decoded into a data structure. Currently, sonet is more widely used in north america, while sdh is more widely deployed in europe. Csop channelized sonetsdh over packet smart sfp converts a fully channelized sonetsdh signal to a packet stream using rfc4553 satop tdm over packet pseudowire technology. Lower data rates can also be transferred via an electrical interface. A pos packet over sonet connection just requires an interface card for a router this might be a router such as the cisco 7200 series the service provider would bring in a ds3 connection or similar coax based demarc that would then connect to this interface.
At first glance, pos looks ridiculous because of the price. Sonet and synchronous digital hierarchy sdh in an asynchronous transfer mode atm environment, and in a packet over sonet. Failure recovery was usually done with linear automatic protection switching aps or. Sonet was developed as american standard while sdh as european standard. I will talk mainly about sonet because you need to understand.
Sunoc48 packet over sonet adapter release notes the sun oc48 packet over sonet adapter release notes provides information to help with troubleshooting common problems you might encounter. Packet over sonet sdh, abbreviated pos, is a communications protocol for transmitting packets in the form of the point to point protocol ppp over sdh or sonet, which are both standard protocols for communicating digital information using lasers or light emitting diodes leds over optical fibre at high line rates. Variable length data packets are mapped directly into the sonet synchronous payload envelope spe. Packet over sonet how is packet over sonet abbreviated. Packet over sonet article about packet over sonet by the. Nov 07, 2003 the cisco 15104 is an oc48 sonet regenerator that fits this application. Packet over sonet white paper pmc971161 issue 1 pmcsierra, inc. Sdh supports various topologies such as point to point, ring, star, linear bus etc.
Pos is deployed in the line cards of gigabit and terabit routers and is implemented in hardware to handle wire speeds ranging from 51 mbs to 10 gbs. As new packet services and higher speed lines are introduced, ppp is easily. Synchronous optical networksynchronous digital hierarchy. This independent channel can be a different sonet connection, or a lowerbandwidth connection. Packet over sonet sdh pos has emerged as the technology of choice for highspeed routers as it enables efficient transmission of internet protocol ip packets directly over sonet sdh fiber. The gateway then sends the scada and pmu data to the control centers through the low bandwidth optical channels using sonet over ethernet sonetoe 7 and high bandwidth optical channels using. In the days of low traffic volume between ip routers, bandwidth partitions over a common interface made it attractive to carry ip over a frame relay andor an atm backbone. Synchronous optical networking sonet and synchronous digital hierarchy sdh are standardized protocols that transfer multiple digital bit streams synchronously over optical fiber using lasers or highly coherent light from lightemitting diodes leds. With this mapping in place, all ietf protocols based. Packet over sonetsdh, abbreviated pos, is a communications protocol for transmitting packets in the form of the point to point protocol ppp over sdh or sonet, which are both standard protocols for communicating digital information using lasers or light emitting diodes leds over optical fibre at high line rates.
Packet over sonet to ethernet switch application guide. Designed in conformance with the small form factor pluggable 20pin multisource agreement msa, csop smart sfp can replace an existing. Packetoversonet sdh pos is an emerging technology for carrying ip and other data traffic over the sonet sdh 1 backbone. This chapter covered pos operation, encapsulation, protection, and convergence. Us6831932b1 transfer of sonet traffic over a packet. At low transmission rates data can also be transferred via an electrical interface. Pour sonet ocn stsn optical container niveau n pour les signaux optiques, synchronous. Packet over sonet pdf packet over sonet pos is a highly scalable protocol that overcomes many of the ineffi ciencies of atm, while providing legacy. Packet over sonet sonet is a timedivision multiplexing tdm architecture that was designed to carry voice traf. Cette technologie est une alternative a pospacket over sonet.
Packet over sonet pdf packet over sonet pdf packet over sonet pdf download. Unfortunately, the obvious problem with these proprietary approaches is that interoperability between various vendors equipment is difficult, if not impossible. Converged packet transport white paper 2015, juniper networks, inc. Deterministic communications for protection applications. For example, as shown in figure 6, an endtoend ethernet service starting as ethernet over sonet sdh could be first transported over a sonet sdh domain. Cisco xfp module main features of the cisco xfp module include. Sun oc48 packet over sonet adapter installation and users. You should be familiar with the pos frame structure and encapsulation and be able to describe the efficiencies of pos over. The cisco industrystandard small formfactor pluggable interface converter sfp for packetoversonetsdh pos, optical networking, and atm.
Tsop transparent sonetsdh over packet smart sfp converts sonet sdh tdm traffic to a packet stream. Pm5350 datasheet, pm5350 pdf, pm5350 data sheet, pm5350 manual, pm5350 pdf, pm5350, datenblatt, electronics pm5350, alldatasheet, free, datasheet, datasheets, data sheet, datas sheets, databook, free datasheet. However, sonet and sdh use different terminology, which makes it difficult to talk about both at the same time. International journal of advanced studies in computer.
Packet over sonet is intended to transmit data at the highest rates possible, because sonet has a smaller packet header overhead than atm 28 bytes out of an 810byte frame compared with 5 out of. In this paper, focus on issues by understanding the current structure of the sonetsdh layers. Today different layered approaches are being used in optical networks, summarized in figure 1. When pppdis stopped and restarted when any application is running on the. Tsop transparent sonetsdh over packet smart sfp converts sonetsdh tdm traffic to a packet stream. This document also explains how packet over sonet pos interfaces use the c2 byte to indicate specifically, whether or not the payload is scrambled. In many small national and regional internet service providers isps, packet over sonet sdh pos technology is being deployed at the oc3stm1 and oc12stm4 rates. Legacy core network ip over sonet over wdm the protocol neutrality of sonetsdh allowed atm, frame relay, packet data, and voice calls to be multiplexed over the common core.
Interface and hardware component command reference for. Understanding the basic differences between sonet and. Synchronous optical networking sonet is a physical layer protocol for transmitting multiple digital bit streams over optical fiber links that form the backbone of the communication networks. Ip over sonet this can be done ip atm sonet, or else using pos packet over sonet.
It employs both electrical and optical specifications. Deterministic communications for protection applications over packet based widearea networks kenneth fodero, christopher huntley, and paul robertson, schweitzer engineering laboratories, inc. If you wanted to, dwdm equipment doesnt even need sonet, you could run a 10g ethernet circuit directly over one fiber that gets muxed right along a sonet oc192. Understanding the c2 flag byte on packet over sonet pos. A single packet can disrupt a large number of users. This document explains how synchronous optical network sonet synchronous digital hierarchy sdh frames use the c2 byte in the path overhead poh to indicate the contents of the payload inside the frame. Designed in conformance with the small form factor pluggable 20pin multisource agreement msa, tsop smart sfp can replace an existing sfp in a router or a switch and transport sonet or sdh traffic across a packet network.
Applications for pospacket over sonet operation and. Packet over sonet application specialist jobs at robert half in oklahoma city, ok. Multiaccess protocol over sonet mapos is a highspeed, linklayer protocol that provides multiple access capability over sonet sdh. You should be able to describe the most popular uses for pos. The cisco 15104 is an oc48 sonet regenerator that fits this application. On transmit, after five 1s in the data, a 0 is added. Packet over sonetsdh pos line cards the cisco 12000 series of packet over sonetsdh pos line cards deliver stateoftheart technology to costeffectively scale carrierclass ipmultiprotocol label switching mpls packet infrastructures to meet the needs of service providers around the world figures 1 and 2. Cisco 12000 series packet over sonetsdh pos line cards.