Topic discussion | How to learn optical transport networks [Issue 12]

liqiang185 · Created Feb 7, 2022 09:58:54

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Welcome to the discussion!

faysalji · Created Feb 7, 2022 10:34:51

Learn from start, basic technologies to advanced ones. Like students still have to study about earlier technologies e.g. Generations of Cellular Communications.

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Funstuff · Created Feb 7, 2022 12:47:57

Start learning from Optical Networking Basics and then move to Advanced Optical Networking Training.

Below are few of the topics to start from and end upto (basic to advance).

Optical Transport Networks & Technologies (OTNT)
A Brief History of Optical Networking
Transport Architecture Principles
Basic Capabilities in OTN Networks
Optical Transport Network (OTN) Basics
Optical Transport Network (OTN) Architecture
Convergence of Optical Transport Network (OTN) Layers
Optical Transport Network (OTN) Rates
ODUk Rates
Optical transport module (OTM-nm, OTM-nrm, OTM-m, OTM-mvn)
Optical channel data unit (ODUk)
Overhead Description
Maintenance signals
Mapping of client signals
Optical Transport Network (OTN) Layers (End-to-End View)
MPLS/MPLS-TP OAM

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AbdullahHQ · Created Feb 7, 2022 14:47:29

Thanks for sharing

wwww20011 · Created Feb 8, 2022 00:50:29

Share my thoughts.
1. Configure simple services. For example, configure OTU2 on an STM-16. Check whether the services are normal. In this process, let's feel the concepts of adaptation, multiplexing, and cross-connection,
2. Create a simple topology to further experience the functions of OTN. For example, to transmit a GE service from city A to city B, configure two devices. In this process, you may realize that the OTN function is to adapt to various services and then multiplex them for long-distance transmission.
3. Learn ITU-T G.709 to learn the frame structure of the OTN, including overheads and related alarms.
4. Understand the functions of overheads and alarms. Find a complete test case, and use the instrument and equipment to perform the test to understand the functions of the main overheads and alarms. Skip the case that is difficult to understand. 5. Understand the role of protection. You can learn from the configuration of services.
6. Learning by doing. If you understand the preceding information, you can locate some simple problems. If you practice it several times, you will be familiar with the OTN.
7. Development and commissioning. If you want to develop an OTN device, you need to understand the development platform of the device, and then you can start to accept some simple development tasks.
8. As you get more and more familiar with the previous work, you will become more confused and eager to know the details, so start to learn G.709 and G.798 in depth.

kcyjtion · Created Feb 8, 2022 00:54:33

The OTN equipment standardizes various service signals on the WDM equipment to facilitate maintenance.
Learning steps:
1. WDM technology (Wavelength demultiplexing, wavelength conversion, system optical power, OSNR, etc.)
2. OTN signal standards (overhead and service mapping signal rate)

Serges_armel · Created Feb 9, 2022 17:34:36

Thank you for Sharing

wissal · Created Feb 22, 2022 10:14:02

The Optical Transport Network (OTN) system is structured in layered networks consisting of several sublayers. It is a recent modernized standard aimed to replace SONET/SDH. Each sublayer is responsible for specific services and is activated at its termination points. The Optical Data Unit (ODU) sublayer currently defines five bit-rate client signals, i.e., 1.25, 2.5, 10, 40, and 100 Gbps that are referred to as ODUk (k=1, 2, 3, 4), respectively.

OTN also defines the ODUk time division multiplexing sublayer. It supports the multiplexing and transporting of several lower bit-rate signals into a higher bit-rate signal and maintains an end-to-end trail for the lower bit-rate signals. The multiplexing of ODUk signals is easy to visualize from the bit-rates. There are two additional specifications: ODU2e and ODUflex. For the purpose of capacity planning modeling, ODU2e can be treated as ODU2, and is not necessary to consider separately. ODUflex is any rate over ODU1, which from a modeling purpose, can be treated as a real variable with lower bound 1 Gbps.

Topic discussion | How to learn optical transport networks [Issue 12]

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Topic discussion | How to learn optical transport networks [Issue 12]

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