Librería Portfolio

Foundations of Modern Networking is a comprehensive, unified survey of modern networking technology and applications for today's professionals, managers, and students. Dr. William Stallings offers clear and well-organized coverage of five key technologies that are transforming networks: Software-Defined Networks (SDN), Network Functions Virtualization (NFV), Quality of Experience (QoE), the Internet of Things (IoT), and cloudbased services.

Dr. Stallings reviews current network ecosystems and the challenges they face-from Big Data and mobility to security and complexity. Next, he offers complete, self-contained coverage of each new set of technologies: how they work, how they are architected, and how they can be applied to solve real problems. Dr. Stallings presents a chapter-length analysis of emerging security issues in modern networks. He concludes with an up-to date discussion of networking careers, including important recent changes in roles and skill requirements.

Coverage:

Elements of the modern networking ecosystem: technologies, architecture, services, and applications
Evolving requirements of current network environments
SDN: concepts, rationale, applications, and standards across data, control, and application planes
OpenFlow, OpenDaylight, and other key SDN technologies
Network functions virtualization: concepts, technology, applications, and software defined infrastructure
Ensuring customer Quality of Experience (QoE) with interactive video and multimedia network traffic
Cloud networking: services, deployment models, architecture, and linkages to SDN and NFV
IoT and fog computing in depth: key components of IoT-enabled devices, model architectures, and example implementations
Securing SDN, NFV, cloud, and IoT environments
Career preparation and ongoing education for tomorrow's networking careers
Key Features:

Strong coverage of unifying principles and practical techniques
More than a hundred figures that clarify key concepts
Web support at williamstallings.com/Network/
QR codes throughout, linking to the website and other resources
Keyword/acronym lists, recommended readings, and glossary
Margin note definitions of key words throughout the text



Preface xxi

PART I MODERN NETWORKING 3

Chapter 1: Elements of Modern Networking 4

1.1 The Networking Ecosystem . . . . . . . . . . . . . . . . . . . 5

1.2 Example Network Architectures . . . . . . . . . . . . . . . . . 7

A Global Network Architecture . . . . . . . . . . . . . . . . . . 7

A Typical Network Hierarchy . . . . . . . . . . . . . . . . . . 9

1.3 Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Applications of Ethernet . . . . . . . . . . . . . . . . . . . . 11

Standards . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Ethernet Data Rates . . . . . . . . . . . . . . . . . . . . . 14

1.4 Wi-Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Applications of Wi-Fi . . . . . . . . . . . . . . . . . . . . . 19

Standards . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Wi-Fi Data Rates . . . . . . . . . . . . . . . . . . . . . . . 21

1.5 4G/5G Cellular . . . . . . . . . . . . . . . . . . . . . . . . 23

First Generation . . . . . . . . . . . . . . . . . . . . . . . 23

Second Generation . . . . . . . . . . . . . . . . . . . . . . 23

Third Generation . . . . . . . . . . . . . . . . . . . . . . . 24

Fourth Generation . . . . . . . . . . . . . . . . . . . . . . 24

Fifth Generation . . . . . . . . . . . . . . . . . . . . . . . 25

1.6 Cloud Computing . . . . . . . . . . . . . . . . . . . . . . 25

Cloud Computing Concepts . . . . . . . . . . . . . . . . . . 26

The Benefits of Cloud Computing . . . . . . . . . . . . . . . . 27

Cloud Networking . . . . . . . . . . . . . . . . . . . . . . 28

Cloud Storage . . . . . . . . . . . . . . . . . . . . . . . . 28

1.7 Internet of Things. . . . . . . . . . . . . . . . . . . . . . . 28

Things on the Internet of Things . . . . . . . . . . . . . . . . 28

Evolution . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Layers of the Internet of Things . . . . . . . . . . . . . . . . . 29

1.8 Network Convergence . . . . . . . . . . . . . . . . . . . . 30

1.9 Unified Communications . . . . . . . . . . . . . . . . . . . 33

1.10 Key Terms . . . . . . . . . . . . . . . . . . . . . . . . . 37

1.11 References . . . . . . . . . . . . . . . . . . . . . . . . . 37

Chapter 2: Requirements and Technology 38

2.1 Types of Network and Internet Traffic . . . . . . . . . . . . . . 39

Elastic Traffic . . . . . . . . . . . . . . . . . . . . . . . . 39

Inelastic Traffic . . . . . . . . . . . . . . . . . . . . . . . 40

Real-Time Traffic Characteristics . . . . . . . . . . . . . . . . 43

2.2 Demand: Big Data, Cloud Computing, and Mobile Traffic . . . . . . 45

Big Data . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Cloud Computing . . . . . . . . . . . . . . . . . . . . . . 48

Mobile Traffic . . . . . . . . . . . . . . . . . . . . . . . . 51

2.3 Requirements: QoS and QoE . . . . . . . . . . . . . . . . . . 53

Quality of Service . . . . . . . . . . . . . . . . . . . . . . 53

Quality of Experience . . . . . . . . . . . . . . . . . . . . . 54

2.4 Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 55

Packet Forwarding . . . . . . . . . . . . . . . . . . . . . . 56

Routing Protocols . . . . . . . . . . . . . . . . . . . . . . 57

Elements of a Router . . . . . . . . . . . . . . . . . . . . . 59

2.5 Congestion Control . . . . . . . . . . . . . . . . . . . . . . 60

Effects of Congestion . . . . . . . . . . . . . . . . . . . . . 60

Congestion Control Techniques . . . . . . . . . . . . . . . . 64

2.6 SDN and NFV . . . . . . . . . . . . . . . . . . . . . . . . 67

Software-Defined Networking . . . . . . . . . . . . . . . . . 67

Network Functions Virtualization . . . . . . . . . . . . . . . . 69

2.7 Modern Networking Elements . . . . . . . . . . . . . . . . . 71

2.8 Key Terms . . . . . . . . . . . . . . . . . . . . . . . . . 72

2.9 References . . . . . . . . . . . . . . . . . . . . . . . . . 73

PART II SOFTWARE DEFINED NETWORKS 75

Chapter 3: SDN: Background and Motivation 76

3.1 Evolving Network Requirements . . . . . . . . . . . . . . . . 77

Demand Is Increasing . . . . . . . . . . . . . . . . . . . . . 77

Supply Is Increasing . . . . . . . . . . . . . . . . . . . . . 77

Traffic Patterns Are More Complex . . . . . . . . . . . . . . . 78

Traditional Network Architectures are Inadequate . . . . . . . . . 79

3.2 The SDN Approach . . . . . . . . . . . . . . . . . . . . . . 80

Requirements. . . . . . . . . . . . . . . . . . . . . . . . 80

SDN Architecture . . . . . . . . . . . . . . . . . . . . . . . 81

Characteristics of Software-Defined Networking . . . . . . .