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Patterns in Network Architecture: A Return to Fundamentals, by John Day
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Groundbreaking Patterns for Building Simpler, More Powerful Networks
�
In Patterns in Network Architecture, pioneer John Day takes a unique approach to solving the problem of network architecture. Piercing the fog of history, he bridges the gap between our experience from the original ARPANET and today’s Internet to a new perspective on networking. Along the way, he shows how socioeconomic forces derailed progress and led to the current crisis.
�
Beginning with the seven fundamental, and still unanswered, questions identified during the ARPANET’s development, Patterns in Network Architecture returns to bedrock and traces our experience both good and bad. Along the way, he uncovers overlooked patterns in protocols that simplify design and implementation and resolves the classic conflict between connection and connectionless while retaining the best of both. He finds deep new insights into the core challenges of naming and addressing, along with results from upper-layer architecture. All of this in Day’s deft hands comes together in a tour de force of elegance and simplicity with the annoying turn of events that the answer has been staring us in the face: Operating systems tell us even more about networking than we thought. The result is, in essence, the first “unified theory of networking,” and leads to a simpler, more powerful–and above all–more scalable network infrastructure.� The book then lays the groundwork for how to exploit the result in the design, development, and management as we move beyond the limitations of the Internet.
�
Using this new model, Day shows how many complex mechanisms in the Internet today (multihoming, mobility, and multicast) are, with this collapse in complexity, now simply a consequence of the structure. The problems of router table growth of such concern today disappear. The inescapable conclusion is that the Internet is an unfinished demo, more in the tradition of DOS than Unix, that has been living on Moore’s Law and 30 years of band-aids. It is long past time to get networking back on track.
•���������� Patterns in network protocols that synthesize “contradictory” approaches and simplify design and implementation
•���������� “Deriving” that networking is interprocess communication (IPC) yielding
•���������� A distributed IPC model that repeats with different scope and range of operation
•���������� Making network addresses topological makes routing purely a local matter
•���������� That in fact, private addresses are the norm–not the exception–with the consequence that the global public addresses required today are unnecessary
•���������� That mobility is dynamic multihoming and unicast is a subset of multicast, but multicast devolves into unicast and facilitates mobility
•���������� That the Internet today is more like DOS, but what we need should be more like Unix
•���������� For networking researchers, architects, designers, engineers
�
Provocative, elegant, and profound, Patterns in Network Architecture transforms the way you envision, architect, and implement networks.
�
Preface: The Seven Unanswered Questions xiii
�
Chapter 1: Foundations for Network Architecture 1
Chapter 2: Protocol Elements 23
Chapter 3: Patterns in Protocols 57
Chapter 4: Stalking the Upper-Layer Architecture 97
Chapter 5: Naming and Addressing 141
Chapter 6: Divining Layers 185
Chapter 7: The Network IPC Model 235
Chapter 8: Making Addresses Topological 283
Chapter 9: Multihoming, Multicast, and Mobility 317
Chapter 10: Backing Out of a Blind Alley 351
�
Appendix A: Outline for Gedanken Experiment on Separating Mechanism and Policy 385
Bibliography 389
Index 399
�
- Sales Rank: #1619057 in Books
- Published on: 2008-01-06
- Original language: English
- Number of items: 1
- Dimensions: 9.52" h x 1.06" w x 7.18" l, 1.90 pounds
- Binding: Hardcover
- 464 pages
From the Back Cover
Groundbreaking Patterns for Building Simpler, More Powerful Networks
�
In Patterns in Network Architecture, pioneer John Day takes a unique approach to solving the problem of network architecture. Piercing the fog of history, he bridges the gap between our experience from the original ARPANET and today’s Internet to a new perspective on networking. Along the way, he shows how socioeconomic forces derailed progress and led to the current crisis.
�
Beginning with the seven fundamental, and still unanswered, questions identified during the ARPANET’s development, Patterns in Network Architecture returns to bedrock and traces our experience both good and bad. Along the way, he uncovers overlooked patterns in protocols that simplify design and implementation and resolves the classic conflict between connection and connectionless while retaining the best of both. He finds deep new insights into the core challenges of naming and addressing, along with results from upper-layer architecture. All of this in Day’s deft hands comes together in a tour de force of elegance and simplicity with the annoying turn of events that the answer has been staring us in the face: Operating systems tell us even more about networking than we thought. The result is, in essence, the first “unified theory of networking,” and leads to a simpler, more powerful–and above all–more scalable network infrastructure.� The book then lays the groundwork for how to exploit the result in the design, development, and management as we move beyond the limitations of the Internet.
�
Using this new model, Day shows how many complex mechanisms in the Internet today (multihoming, mobility, and multicast) are, with this collapse in complexity, now simply a consequence of the structure. The problems of router table growth of such concern today disappear. The inescapable conclusion is that the Internet is an unfinished demo, more in the tradition of DOS than Unix, that has been living on Moore’s Law and 30 years of band-aids. It is long past time to get networking back on track.
•���������� Patterns in network protocols that synthesize “contradictory” approaches and simplify design and implementation
•���������� “Deriving” that networking is interprocess communication (IPC) yielding
•���������� A distributed IPC model that repeats with different scope and range of operation
•���������� Making network addresses topological makes routing purely a local matter
•���������� That in fact, private addresses are the norm–not the exception–with the consequence that the global public addresses required today are unnecessary
•���������� That mobility is dynamic multihoming and unicast is a subset of multicast, but multicast devolves into unicast and facilitates mobility
•���������� That the Internet today is more like DOS, but what we need should be more like Unix
•���������� For networking researchers, architects, designers, engineers
�
Provocative, elegant, and profound, Patterns in Network Architecture transforms the way you envision, architect, and implement networks.
�
Preface: The Seven Unanswered Questions xiii
�
Chapter 1: Foundations for Network Architecture 1
Chapter 2: Protocol Elements 23
Chapter 3: Patterns in Protocols 57
Chapter 4: Stalking the Upper-Layer Architecture 97
Chapter 5: Naming and Addressing 141
Chapter 6: Divining Layers 185
Chapter 7: The Network IPC Model 235
Chapter 8: Making Addresses Topological 283
Chapter 9: Multihoming, Multicast, and Mobility 317
Chapter 10: Backing Out of a Blind Alley 351
�
Appendix A: Outline for Gedanken Experiment on Separating Mechanism and Policy 385
Bibliography 389
Index 399
�
About the Author
John Dayhas been involved in research and development of computer networks since 1970, when they were 12th node on the “Net.” Mr. Day has developed and designed protocols for everything from the data link layer to the application layer.
����Also making fundamental contributions to research on distributed databases, he developed one of two fundamental algorithms in the updating of multiple copies. He also did work on the early development of supercomputers and was a member of a development team on three operating systems. Mr. Day was an early advocate of the use of Formal Description Techniques (FDTs) for protocols and shepherded the development of the three international standard FDTs: Estelle, LOTOS, and extending SDL. Mr. Day managed the development of the OSI reference model, naming and addressing, and a major contributor to the upper-layer architecture; he also chaired the US ANSI committee for OSI Architecture and was a member of the Internet Research Task Force’s Name Space Research Group. He has been a major contributor to the development of network management architecture, working in the area since 1984 defining the fundamental architecture currently prevalent and designing high-performance implementations; and in the mid-1980s, he was involved in fielding a network management system, 10 years ahead of comparable systems. Recently, Mr. Day has turned his attention to the fundamentals of network architectures and their implications (as discussed in this book).
����Mr. Day is also a recognized scholar in the history of cartography, on Neolithic Korea, and on Jesuits in 17th-century China. Most recently, Mr. Day has also contributed to exhibits at the Smithsonian and a forthcoming chapter in Matteo Ricci Cartographia.
Most helpful customer reviews
6 of 7 people found the following review helpful.
The Godel, Escher, Bach of networking
By Steve Peterson
Working to uncover the "first principles" of networking, Day places the development of networking within its historic context, interweaving protocol design decisions with fundamental concepts of philosophy, mathematics, and computer science. It is not too much to say that this is the Godel, Escher, Bach of networking.
Santayana said that "those who cannot learn from history are doomed to repeat it." Readers of this book will leave with a solid grounding the decisions leading to the current state of networking, and appreciate a provocative viewpoint on the way forward.
4 of 6 people found the following review helpful.
Patterns in Network Architecture
By Karl Schoettle
In Patterns in Network Architecture, John Day has challenged the community of computer science to be truely a science by understanding the theory behind networking. The study of computer technology is abreviated by focusing on minor repairs to a system that may have fundamental flaws. Day encourages us to understand how we came to our present technology. Only through understanding of the underlying theories do we have any chance of moving toward a better, and possibly necessary, theory and practice.
15 of 16 people found the following review helpful.
A New Hope
By Alexander Mckenzie
I was involved in the design of the ARPAnet Protocols and worked on Internet protocols. For about a year I was the chair of of the ISO Presentation Layer committee. I have a lot of first-hand experience with where we are today and how we got here.
I've just finished "Patterns in Network Architecture" and I'm impressed. While there are many things to argue over, the architecture Day describes sounds like it should work, and if it does work should be a vast improvement over the current ramshackle protocol structure. I haven't really done the hard work necessary to figure out if it really will work, and I don't expect to. And we know that the devil is always in the details. But I hope to hear sometime that an implementation has succeeded.
Like many others in the field, John has strong opinions and axes to grind. Rather than a shortcoming, however, I think his strong opinions and sarcastic wit are a benefit; any reader can see clearly where John is coming from and can research the "other side" if it seems important.
On page 79, Day writes:
"... two types of protocols tend to alternate in architectures. The MAC layer does relaying and multiplexing, the data link layer does "end-to-end" error control; the network layer relays, the transport layer does end-to-end error control; mail protocols relay, hmm no end-to-end error control and sometimes mail is lost. ...we can make two observations:
1. Relaying always creates the opportunity for PDUs to be lost. Therefore, to guarantee reliability, there must always be an error-control protocol on top of a relaying protocol.
2. This would seem to indicate that there are really only three fundamental types of protocols:
- Two data transfer protocols: Relaying and multiplexing protocols
and error- and flow-control protocols with different policies
- Application protocols"
The rest of the book goes on to develop these thoughts, which in my view is a real breakthrough in clarity.
This book ought to be used as a textbook! It is highly recommended to everyone working in the field. If only there weren't so many distracting editorial errors.
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