OPNET开发教程合集

OPNET开发教程

计算机 络仿真OPNET实用指南

本书是提供OPNETITGuru和Modeler软件全面描述以及如何使用这个软件进行计算机 络仿真和建模的第一本教材，包括3部分内容：第1部分系统地介绍了OPNET的基本功能特征；第2部分使用一种自顶向下的方法，描述了如何操作各协议层，每章都解释了有关的OPNET功能特征，并包括了一次 络仿真过程中如何使用这些功能特征的各步骤指令；第3部分是实验室作业。本书适合在计算机通信和 络领域工作的IT专业人员和研究人员以及该领域的本科生和研究生。

The practical OPNET user guide for computer network simulation

One of the first books to provide a comprehensive description of OPNETIT Guru and Modeler software, The Practical OPNETUser Guide for Computer Network Simulation explains how to use this software for simulating and modeling computer networks. The included laboratory projects help readers learn different aspects of the software in a hands-on way.

Quickly Locate Instructions for Performing a Task
The book begins with a systematic introduction to the basic features of OPNET, which are necessary for performing any network simulation. The remainder of the text describes how to work with various protocol layers using a top-down approach. Every chapter explains the relevant OPNET features and includes step-by-step instructions on how to use the features during a network simulation.

Gain a Better Understanding of the “Whats” and “Whys” of the Simulations
Each laboratory project in the back of the book presents a complete simulation and reflects the same progression of topics found in the main text. The projects describe the overall goals of the experiment, discuss the general network topology, and give a high-level description of the system configuration required to complete the simulation.

Discover the Complex Functionality Available in OPNET
By providing an in-depth look at the rich features of OPNET software, this guide is an invaluable reference for IT professionals and researchers who need to create simulation models. The book also helps newcomers understand OPNET by organizing the material in a logical manner that corresponds to the protocol layers in a network.

This book is excellent. I would highly recommend it for anyone interested in learning to use OPNET for network and application simulation and modeling. The first 4 chapters walk you through the fundamentals of using OPNET better than I have seen any other materials do so. Later chapters get involved with each of the protocol layers. The benefit here is not only do they cover working with OPNET from the Transport, Network and Link Layer, but they go through all of the configurable parameters of these layers that is an excellent refresher, or update as it it up to date. (example TCP Tahoe, TCO Reno, Tcp Reno-new, and SACK are all covered, along with their differences). In fact, it is possible you work in networking and may have never seen this level of detail that the parameters expose you to. In this case it will be an excellent education on the workings of error/recovery and performance of each of the protocols. This is the theme throughout each of the layers from Transport layer 4 down to Link Layer 2.

The book also has labs. The first two are very basic in working with OPNET and the first is step by step helping you to work through your first real usage of the OPNET tool. In the second, the lab has you build your first network, with additional help similar to the first Lab. What is rather unique, and I find it excellent, the more advanced labs that follow starting with lab 3 do not give you step by step instructions. They provide the steps required to complete the lab, and reference the chapters in the book, be it the basics chapters 1-4, or the protocol/application specific chapters 5-9. This requires at this point you know the detailed steps to perform each step, but provides a reference back to the section of the book where the more detailed “step by step” is provided. The benefit here is it focuses on the goal of the lab and not the tool, but if you need to peak back and refresh the detail, it is there. I like this form of learning. As the authors point out, rarely do you learn anything if you are shown step by step in every problem. (It is akin to when you too calculus I verses advanced calculus 3 and beyond. In calculus I every step is detailed across 20 pages, mostly algebraic manipulation to get the equation in a form to finally perform the one step integration or differentiation. Later on in more advanced classes if they went to that level of detail, which by calculus 3 should be well exercised and understood, they would never get through the material, and you would be forced to be bored to death.) In this case the authors provide the pointers back to the detailed steps, but focus on the more advanced problem. So if you think about it, this is the way you learned all your life. It is very natural.

I highly recommend this book for those using OPNET, or considering using OPNET for modeling and simulation. For capacity planning, for Application, systems and networks scalability, today, you often rarely get the time to do capacity planning and performance analysis the way it should be done. While GCAP (Neil Gunther) is a more succinct method verses the full “operations research” methods, if you are using GCAP to do ‘zero time” scalability assessment, OPNET is a great tool that allows you to tweak parameters and show the performance changes. Today everything is “I need it yesterday”, and everything is either “Time to market”, or “get close to real-time” aka Low Latency, low Jitter across multiple industry verticals. OPNET alone is an excellent tool. Augmenting scalability analysis with modeling and simulation is even more powerful.

While this book only scratches the surface of OPNET, it is well designed and written to get you working with real day to day OPNET that will improve performance and/or understanding of existing infrastructure, and allow the “What if” scenarios recommended in a design to be seen before they $$$ are spent on implementation. OPNET is a powerful took, and can be used to model and simulate new protocols, and hardware designs as well. This is beyond the scope of this book, however this is the best material I have seen on getting started with OPNET to date.

The only negative is that unfortunately the authors do ask questions you should be able to answer if you were successful in completing the labs.
However, it is possible to complete the labs and have incorrect results as OPNET is a complex tool. The authors do not provide the answers to the questions in the book, or even on a website if they didn’t want to include it in the book. I also did not find even an email address, often provided by authors writing this type of book, to facilitate asking if they can be had. An excellent book, what a sad oversight detail.

Lastly, it is printed on acid-free paper, so it won’t yellow. However given the subject matter, OPNET will continue to evolve and hence the material in the book will become obsolete before the paper would even turn yellow if not printed on acid-free paper. OPNET will change, the protocols will change, so the shelf life is akin to the acid-free books I have on ATM, and FDDI. Not a big deal, but if they thought enough to put it on acid-free paper for longevity, why not provide some way to obtain the answers to the questionsThis really bugs me, and in a way, without being able to validate my labs were done correctly, it is like doing a math problem, getting it wrong, thinking you got it right, and moving onward with confidence that you shouldn’t have! So I rate the more advanced labs usefulness questionable at this point, if not near worthless. I simply don’t believe they didn’t consider inclusion/exclusion given how well the book covers material and is well designed. So I have to say this was a poor decision, and I almost deducted two full stars. You don’t do the lab’s, unless you have a photographic memory, you won’t learn to use the tool. Not knowing your labs are correct is simply poor.

OPNET IoT Simulation

This is the first book offering an in-depth and comprehensive IoT network simulation, supported by OPNET tool. Furthermore, the book presents the simulations of IoT in general, not limited by OPNET. The authors provide rich OPNET IoT simulation codes, with detailed explanation regarding the functionalities of the model. These codes can facilitate readers’ fast implementation, and the shared model can guide readers through developing their own research.

This book addresses various versions of Internet of Things (IoT), including human-centric IoT, green IoT, Narrow band IoT, Smart IoT, IoT-Cloud integration. The introduced OPNET IoT simulation provides a comprehensive platform to simulate above-mentioned IoT systems. Besides, this book introduces OPNET semi-physical simulation in detail. Based on this technology, simulated IoT and practical cloud are seamlessly connected with each other. On top of this “IoT-cloud-integration” semi-physical simulation environment, various smart IoT applications can be realized.

OPNET 络仿真

本书深入而系统地讲解了OPNET Modeler 络仿真的基本使用技巧、重点和难点，尤其是业务建模、无线建模以及动态进程、外部模块访问、高级体系架构程序的开发，并给出了极具参考价值的实用编程技巧。 本书共15章，分为由浅入深的4个部分，内容详实，可读性强，是OPNET开发人员的一本不可多得的参考书籍。它能帮助OPNET Modeler的初学者迅速跨越到OPNET高级程序员的行列