Communication protocols are rules whereby meaningful communication can be exchanged between different communicating entities. In general, they are complex and difficult to design and implement. Specifications of communication protocols written in a natural language (e.g. English) can be unclear or ambiguous, and may be subject to different interpretations. As a result, independent implementations of the same protocol may be incompatible. In addition, the complexity of protocols make them very hard to analyze in an informal way. There is, therefore, a need for precise and unambiguous specification using some formal languages. Many protocol implementations used in the field have almost suffered from failures, such as deadlocks. When the conditions in which the protocols work correctly have been changed, there has been no general method available for determining how they will work under the new conditions. It is necessary for protocol designers to have techniques and tools to detect errors in the early phase of design, because the later in the process that a fault is discovered, the greater the cost of rectifying it. Protocol verification is a process of checking whether the interactions of protocol entities, according to the protocol specification, do indeed satisfy certain properties or conditions which may be either general (e.g., absence of deadlock) or specific to the particular protocol system directly derived from the specification. In the 80s, an ISO (International Organization for Standardization) working group began a programme of work to develop formal languages which were suitable for Open Systems Interconnection (OSI). This group called such languages Formal Description Techniques (FDTs). Some of the objectives of ISO in developing FDTs were: enabling unambiguous, clear and precise descriptions of OSI protocol standards to be written, and allowing such specifications to be verified for correctness. There are two FDTs standardized by ISO: LOTOS and Estelle. Communication Protocol Specification and Verification is written to address the two issues discussed above: the needs to specify a protocol using an FDT and to verify its correctness in order to uncover specification errors in the early stage of a protocol development process. The readership primarily consists of advanced undergraduate students, postgraduate students, communication software developers, telecommunication engineers, EDP managers, researchers and software engineers. It is intended as an advanced undergraduate or postgraduate textbook, and a reference for communication protocol professionals.

Welcome to the fourth IFIP workshop on protocols for high speed networks in Vancouver. This workshop follows three very successful workshops held in Ziirich (1989), Palo Alto (1990) and Stockholm (1993) respectively. We received a large number of papers in response to our call for contributions. This year, forty papers were received of which sixteen were presented as full papers and four were presented as poster papers. Although we received many excellent papers the program committee decided to keep the number of full presentations low in order to accommodate more discussion in keeping with the format of a workshop. Many people have contributed to the success of this workshop including the members of the program committee who, with the additional reviewers, helped make the selection of the papers. We are thankful to all the authors of the papers that were submitted. We also thank several organizations which have contributed financially to this workshop, specially NSERC, ASI, CICSR, UBC, MPR Teltech and Newbridge Networks.

This volume contains the latest worldwide research results on formal description techniques applicable to telecommunications, covering their theoretical foundations, industrial applications and practical usage. The book presents the selected proceedings of the eighth International Conference on Formal Description Techniques, arranged by the International Federation for Information Processing and held in Montreal, Canada, October 1995.

The Full-Lifecycle Guide to API Design Principles of Web API Design brings together principles and processes to help you succeed across the entire API design lifecycle. Drawing on extensive in-the-trenches experience, leading consultant James Higginbotham helps you align every stakeholder on specific outcomes, design APIs that deliver value, and scale the design process from small teams to the entire organization. Higginbotham helps you bring an "outside-in" perspective to API design to reflect the voices of customers and product teams, map requirements to specific and well-organized APIs, and choose the right API style for writing them. He walks through a real-world example from the ground up, offering guidance for anyone designing new APIs or extending existing APIs. Deliver great APIs by getting your design processes right Gain agreement on specific outcomes from design teams, customers, and other stakeholders Craft job stories, conduct EventStorming, and model capabilities Identify the right APIs, and organize operations into coherent API profiles Choose the best styles for each project: REST, gRPC, GraphQL, or event-based async APIs Refine designs based on feedback from documenters, testers, and customers Decompose APIs into microservices Mature your API program, implementing design and management processes that scale This guide is invaluable for anyone involved in planning or building APIs--architects, developers, team leaders, managers in single and multi-team environments, and any technical or business professional delivering "API-as-a-product" offerings. Register your book for convenient access to downloads, updates, and/or corrections as they become available. See inside book for details.

A mobile agent is a software program with the capability to suspend its execution and resume it on another computer. Agents are a relatively recent development in computer science, which have become a popular and useful methodology for the modelling and implementation of distributed systems, particularly those consisting of a number of largely autonomous components. The extensive use of multi-agent systems in various areas including information management, industrial control and manufacturing systems, suggests that the multi-agent systems methodology may also be appropriate for the design of power system automation systems.

IP Network-based Multi-agent Systems for Industrial Automation: Information Management, Condition Monitoring and Control of Power Systems is the first book to present an introduction to the use of the Internet protocol suite and multi-agent systems for the information management, online monitoring and control of distributed power system substations. It proposes an open architecture for information management and control, based on the concepts of multi-agent systems and mobile agents. In this book, mobile agents are applied to the retrieval and analysis of substation data, and to remote operator intervention. This book also describes a prototype implementation of the architecture, in the form of a substation information management system, which has been demonstrated and evaluated using a substation simulator. The architecture is also evaluated theoretically with respect to its performance, modifiability, functionality and reliability.

As mobile agent technologies are in the early stages the real applications of these technologies are rare; IPNetwork-based Multi-agent Systems for Industrial Automation: Information Management, Condition Monitoring and Control of Power Systems will be an excellent reference for postgraduates, researchers and academics in engineering and computer science, as well as engineers in system automation and managers in distributed industrial systems.

Recent spectacular achievements in wireless, mobile, and sensor networks have dramatically changed our lives in many ways. However, the rapid evolution of wireless systems not only promises increased functionality, reliability, availability, and security, as well as putting a wide variety of new services at the users' disposal ? it also creates a number of design challenges that our research community is now facing. Scientists and engineers need to come up with, and promptly implement, novel wireless network architectures, while system operators and planners rethink their business models and attend to the growing expectations of their customer base. To provide a suitable forum for discussion between researchers, practitioners, and industry representatives interested in new developments in the respective research area, IFIP WG 6. 8 launched three separate series of conferences: MWCN (Mobile and Wireless Communications Networks), PWC (Personal Wireless Communications), and WSAN (Wireless Sensor and Actors Networks). In 2008, MWCN and PWC were merged into the IFIP Wireless and Mobile Networking Conference (WMNC 2008), held in Toulouse, France, from September 30 to October 2, 2008. MWNC 2008 and PWC 2008 topics were subsequently revised with a view to covering the whole spectrum of hot issues in wireless and mobile networking. As a result, IFIP WG 6. 8 decided to add WSAN as another WMNC track.

Wireless Sensor Network (WSN) consists of numerous physically distributed autonomous devices used for sensing and monitoring the physical and/or environmental conditions. A WSN uses a gateway that provides wireless connectivity to the wired world as well as distributed networks. There are many open problems related to Ad-Hoc networks and its applications. Looking at the expansion of the cellular infrastructure, Ad-Hoc network may be acting as the basis of the 4th generation wireless technology with the new paradigm of 'anytime, anywhere communications'. To realize this, the real challenge would be the security, authorization and management issues of the large scale WSNs. This book is an edited volume in the broad area of WSNs. The book covers various chapters like Multi-Channel Wireless Sensor Networks, its Coverage, Connectivity as well as Deployment. It covers comparison of various communication protocols and algorithms such as MANNET, ODMRP and ADMR Protocols for Ad hoc Multicasting, Location Based Coordinated Routing Protocol and other Token based group local mutual exclusion Algorithms. The book also covers a chapter on Extended Ad hoc On-Demand Distance Vector (EAODV) routing protocol based on Distributed Minimum Transmission Multicast Routing (DMTMR). One chapter is dedicated to OCDMA and its future application and another chapter covers development of Home Automation System using SWN.

This is the first book devoted to mobility management, covering the important principles, technologies and applications of mobility management based on years of academic research and industry experiences. The content is organized according to the reference models proposed by the authors, and emphasizes on technical principles rather than protocol details; a systematic and comprehensive introduction is presented yet without losing focuses; the existing technologies in cellular system, mobile Internet and IMS/SIP are also extensively compared. This book can be an indispensable reference for mobile communication engineers, computer network engineers, researchers and anyone else involved in academic, industrial and standardization activities on mobility management.

FORTE/PSTV '97 addresses Formal Description Techniques (FDTs) applicable to Distributed Systems and Communication Protocols (such as Estelle, LOTOS, SDL, ASN.1, TTCN, Z, Automata, Process Algebra, Logic). The conference is a forum for presentation of the state-of-the-art in theory, application, tools and industrialization of FDTs, and provides an excellent orientation for newcomers.

This chapter has discussed how a commonbroadcast medium can be shared among many contending users. Multiple access protocols differ primarily by the amount of coordination needed to control potentially conflicting packet transmissions. Ato neextreme is random access where no coordinationis provideda ndp acket collisions arep ossible. Atthe other endo fthe spectrum, the class of fixed assignment access protocols eliminates collisions entirely butpay the price ofadditional overhead required forscheduling user access. Hybrid access protocolsb etweenthese two extremes exist While these protocols attempt to combine the advantages ofrandom andfixed access, they also suffer the c ombined drawbacks and overhead ofboth classes of access schemes. Amongt he many factors that determine the performance ofa n access protocol include the propagation delay/packet transmission timeratio, the message arrival process, the types of feedback information available, the user population, and the ability of the user to sense the activities in the network. BIBLIOGRAPHY [ABRA93] Abramson, N. , Multiple Access Communications , IEEE Press, 1993. [BERT92] Bertsekas, D. and Gallager, R. , Data Networks , Prentice Hall, 1992. [CHOU83]Chou,W, ComputerCommunications Volume1:Principles , Prentice Hall, 1983. [CIDO87] Cidon, I. andSidi, M. , "Erasures and Noise in Splitting Multiple Access Algorithms", IEEE Transactions on Information Theory, Vol. 33, No. 1, January 1987, pp. 132 - 140. [CIDO88] Cidon, I, Kodesh, H. and Sidi, M. , "Erasure, Capture and Random Power Level Selectionin Multiple Access Systems", IEEE Transactions on Communications , Vol. 3 6,N o. 3,March 1988, pp. 263 - 271.

This is the Proceedings of the 7th IFIP WG6.1 International Workshop on Protocol Test Systems (IWPTS'94) which was held in Tokyo, Japan on November 8-10, 1994. After having been organized in Vancouver (Canada, 1988), Berlin (Germany, 1989), McLean (USA, 1990), Leidschendam (The Netherlands, 1991), Montreal (Canada, 1992) and Pau (France, 1993), this is the 7th international workshop. The aim of the workshop is to be a meeting point between research and industry and between theory and practice of the testing of data communication systems. The workshop consists of the presentations of reviewed and invited papers, tool demonstrations and panel sessions. All submitted papers have been reviewed by the members of the Program Committee and the following additional reviewers including: L. Andrey, N. Arakawa, D. Becam, L. Boullier, R. Dssouli, B. Forghani, M. Higuchi, L. Heerink, G. Huecas, M. Hunter, S. lisaku, Y. Kakuda, K. Kazama, L-S. Koh , R. Langerak, D. Lee, G. Leon, G. Luo, P. Maigron, M. Mori, A. Nakamura, S. Nightingale, K. Okada, K. Okano, N. Okazaki, A. Petrenko, M. Phalippou, A. Rennoch, F. Sato, Y. Sugito, D. Tang, D. Toggweiler, F. Vallo and J. Zhu. The Program Committee has selected excellent papers among them. This proceedings includes two invited papers, fifteen regular papers, six short papers, two panel reports and one panel paper which were presented in the workshop.

Analysis of Computer and Communication Networks provides the basic techniques for modeling and analyzing two of the fundamental components of high performance networks: switching equipment, and software employed at the end nodes and intermediate switches. The book also reviews the design options used to build efficient switching equipment. Topics covered include Markov chains and queuing analysis, traffic modeling, interconnection networks, and switch architectures and buffering strategies.

This book covers the mathematical theory and techniques necessary for analyzing telecommunication systems. Queuing and Markov chain analyses are provided for many protocols currently in use. The book then discusses in detail applications of Markov chains and queuing analysis to model more than 15 communications protocols and hardware components.

Formal Methods for Protocol Engineering and Distributed Systems addresses formal description techniques (FDTs) applicable to distributed systems and communication protocols. It aims to present the state of the art in theory, application, tools an industrialization of FDTs. Among the important features presented are: FDT-based system and protocol engineering; FDT application to distributed systems; Protocol engineeering; Practical experience and case studies. Formal Methods for Protocol Engineering and Distributed Systems contains the proceedings of the Joint International Conference on Formal Description Techniques for Distributed Systems and Communication Protocols and Protocol Specification, Testing, and Verification, which was sponsored by the International Federation for Information Processing (IFIP) and was held in Beijing, China, in October 1999. This volume is suitable as a secondary text for a graduate level course on Distributed Systems or Communications, and as a reference for researchers and industry practitioners.

We arehappy to welcome you to the IFIP Protocols for High-Speed Networks '96 workshop hosted by INRIA Sophia Antipolis. This is the fifth event in a series initiated in Zurich in 1989 followed by Palo Alto (1990), Stockholm (1993), and Vancouver (1994). This workshop provides an international forum for the exchange of information on protocols for high-speed networks. The workshop focus on problems related to the e: fficient transmission of multimedia application data using high-speed networks and internetworks. Protocol for High-Speed Networks is a "working conference." That explains we have privileged high quality papers describing on-going research and novel ideas. The number of selected papers was kept low in order to leave room for discussion on each paper. Together with the technical sessions, working sessions were organized on hot topics. We would like to thank all the authors for their interest. We also thank the Program Committee members for the Ievel of effort in the reviewing process and in the workshop technical program organization. We finally thank INRIA and DRET for their financial support to the organization of the workshop.

The recent rapid advances in wireless technologies have created a demand for high quality multimedia applications and services. These advanced multimedia applications give rise to a new set of challenges in providing Quality of Service (QoS) when delivering these services over wireless networks. The Handbook of Research on Wireless Multimedia: Quality of Service and Solutions highlights and discusses the underlying QoS issues that arise in the delivery of real-time multimedia services over wireless networks. This cutting-edge book presents state-of-the-art solutions from leading researchers active in the field to address the QoS issues for different wireless multimedia applications.

karmano hy api boddhavyam boddhavyam ca vikarmanah akarmanas ca boddhavyam gahana karmano gatih The intricacies of action are very hard to understand. Therefore one should know properly what action is, what forbidden action is, and what inaction is. The Bhagvad Gita (4.17) This book is the outcome of the research contribution of Hanane Fathi towards her Ph.D. studies jointly with Shyam S. Chakraborty and Ramjee Prasad as - pervisors. To the best of the authors' knowledge, this is a ?rst book on voice over Internet protocol (VoIP) covering such a broad perspective as illustrated in Figure P.1. This book is a new, forward-looking resource that explores the present and future trends of VoIP in the wireless heterogeneous networks. This book also provides the discovery path that these network infrastructures are following from a perspective of synergies with the present systems and how they will pave the way for future systems. This book is intended for everyone in the ?eld of wireless information and multimedia communications. It provides different levels of material suitable for managers, researchers, network providers, and graduate students. We hope that all readers will experience the bene?ts and power of this knowledge. We have tried our best to make each chapter comprehensive and we cannot claim that this book is without errors. Any remarks to improve the text and correct the errors would be highly appreciated.

"IPv6 Security" Protection measures for the next Internet Protocol As the world's networks migrate to the IPv6 protocol, networking professionals need a clearer understanding of the security risks, threats, and challenges this transition presents. In IPv6 Security, two of the world's leading Internet security practitioners review each potential security issue introduced by IPv6 networking and present today's best solutions. "IPv6 Security" offers guidance for avoiding security problems prior to widespread IPv6 deployment. The book covers every component of today's networks, identifying specific security deficiencies that occur within IPv6 environments and demonstrating how to combat them. The authors describe best practices for identifying and resolving weaknesses as you maintain a dual stack network. Then they describe the security mechanisms you need to implement as you migrate to an IPv6-only network. The authors survey the techniques hackers might use to try to breach your network, such as IPv6 network reconnaissance, address spoofing, traffic interception, denial of service, and tunnel injection. The authors also turn to Cisco(R) products and protection mechanisms. You learn how to use Cisco IOS(R) and ASA firewalls and ACLs to selectively filter IPv6 traffic. You also learn about securing hosts with Cisco Security Agent 6.0 and about securing a network with IOS routers and switches. Multiple examples are explained for Windows, Linux, FreeBSD, and Solaris hosts. The authors offer detailed examples that are consistent with today's best practices and easy to adapt to virtually any IPv6 environment. Scott Hogg, CCIE(R) No. 5133, is Director of Advanced Technology Services at GlobalTechnology Resources, Inc. (GTRI). He is responsible for setting the company's technical direction and helping it create service offerings for emerging technologies such as IPv6. He is the Chair of the Rocky Mountain IPv6 Task Force. Eric Vyncke, Cisco Distinguished System Engineer, consults on security issues throughout Europe. He has 20 years' experience in security and teaches security seminars as a guest professor at universities throughout Belgium. He also participates in the Internet Engineering Task Force (IETF) and has helped several organizations deploy IPv6 securely.

• Understand why IPv6 is already a latent threat in your IPv4-only network
• Plan ahead to avoid IPv6 security problems before widespread deployment
• Identify known areas of weakness in IPv6 security and the current state of attack tools and hacker skills
• Understand each high-level approach to securing IPv6 and learn when to use each
• Protect service provider networks, perimeters, LANs, and host/server connections
• Harden IPv6 network devices against attack
• Utilize IPsec in IPv6 environments
• Secure mobile IPv6 networks
• Secure transition mechanisms in use during the migration from IPv4 to IPv6
• Monitor IPv6 security
• Understand the security implications of the IPv6 protocol, including issues related to ICMPv6 and the IPv6 header structure
• Protect your network against large-scale threats by using perimeter filtering techniques and service provider-focused security practices
• Understand the vulnerabilities that exist on IPv6 access networks and learn solutions for mitigating each

This book, written by leading experts from academia and industry, offers a condensed overview on hot topics among the Cognitive Radios and Networks scientific and industrial communities (including those considered within the framework of the European COST Action IC0902) and presents exciting visions for the future. Examples of the subjects considered include the design of new filter bank-based air interfaces for spectrum sharing, medium access control design protocols, the design of cloud-based radio access networks, an evolutionary vision for the development and deployment of cognitive TCP/IP, and regulations relevant to the development of a spectrum sharing market. The concluding chapter comprises a practical, hands-on tutorial for those interested in developing their own research test beds. By focusing on the most recent advances and future avenues, this book will assist researchers in understanding the current issues and solutions in Cognitive Radios and Networks designs.

This workshop proceedings introduces the latest innovations and trends in IP-based applications and satellite networking. It explains many aspects of advanced satellite networking systems, such as deployment of IPv6 over satellites, working with WLAN and WiMax, and rules concerning multi-segment networks. In addition, the book covers hot-button issues such as security, architecture improvement, resource allocation, video networking, and service integration.

This PSTV'94 Symposium is the fourteenth of a series of annual meetings organized under the auspices of IFIP W.G. 6.1, a Working Group dedicated to "Architectures and Protocols for Computer Networks." This is the oldest and most established symposium in the emerging field of protocol engineering which has spawn many international conferences including FORTE (International Conference on Formal Description Tech niques), IWPTS (International Workshop on Protocol Test Systems), ICNP (Interna tional Conference on Network Protocols) and CAY (Conference on Computer-Aided Verification). The main objective of this PSTV symposium is to provide a forum for researchers and practitioners in industry and academia interested in advances in using formal methods and methodologies to specify, develop, test and verify communication protocols and distributed systems. This year's PSTV symposium enjoys a nice mixture of formal methods and practical issues in network protocols through the invited addresses of three outstanding speakers, Ed Brinksma (University of Twente), Raj Jain (Ohio State University) and David Tennenhouse (MIT) as well as 5 tutorials, in addition to 9 techni cal sessions and two practical panel sessions. The 5 tutorials are offered on the first day in two parallel tracks for intensive exposure on hot topics of current interest. This year, out of 51 submissions the Program Committee selected 18 regular papers (with an allotment of 16 pages in the Proceedings) and 9 mini-papers (of 8 pages)."

"Running IPv6" explains how to install and operate the IPv6 protocol for Windows XP, Mac OS X, FreeBSD, Red Hat Linux, and Cisco routers. The book also covers DNS and BIND, Zebra, Apache 2, and Sendmail. While IPv4 uses 32-bit addresses, IPv6 addresses are 128 bits long, and allow for more unique addresses. While the adoption of IPv6 won't be immediate, it is necessary.

"Running IPv6" compares and contrasts IPv6 to IPv4, and discusses the advantages and disadvantages of each. Because most major software and hardware vendors have (or will) adopt IPv6, the focus of this book is to leverage your existing knowledge of IPv4 and to help you apply that knowledge to the newer protocol. Table of Contents IPv6 Getting Started Tunnels Routing The DNS Applications The Transition IPv6 Internals Security Troubleshooting Providing Transit Services

This book provides comprehensive coverage of the protocols of communication systems. The book is divided into four parts. Part I covers the basic concepts of system and protocol design and specification, overviews the models and languages for informal and formal specification of protocols, and describes the specification language SDL. In the second part, the basic notions and properties of communication protocols and protocol stacks are explained, including the treatment of the logical correctness and the performance of protocols. In the third part, many methods for message transfer, on which specific communication protocols are based, are explained and formally specified in the SDL language. The fourth part provides for short descriptions of some specific protocols, mainly used in IP networks, in order to acquaint a reader with the practical use of communication methods presented in the third part of the book. The book is relevant to researchers, academics, professionals and students in communications engineering. Provides comprehensive yet granular coverage of the protocols of communication systems Allows readers the ability to understand the formal specification of communication protocols Specifies communication methods and protocols in the specification language SDL, giving readers practical tools to venture on their own

The development of radio-frequency electromagnetic fields for wireless data transmission has presented several new opportunities for sharing, tracking, and reading digital information in various industries. RFID Technology Integration for Business Performance Improvement presents emerging research surrounding the use and value of Radio Frequency Identification (RFID) technology for cost reduction, supply chain improvement, inventory management, and partner relationship management. This publication is ideal for use by business managers, researchers, academics, and advanced-level students seeking research on the management strategies, operational techniques, opportunities, and challenges of implementing and using this new technology in a business setting.

This volume presents the latest research worldwide on communications protocols, emphasizing specification and compliance testing. It presents the complete proceedings of the fifteenth meeting on Protocol Specification, Testing and Verification' arranged by the International Federation for Information Processing.