Designing Networks and Services for the Cloud: Delivering business-grade cloud applications and services

Overview

Designing Networks and Services for the Cloud

Delivering business-grade cloud applications and services

A rapid, easy-to-understand approach to delivering a secure, resilient, easy-to-manage, SLA-driven cloud experience

Designing Networks and Services for the Cloud helps you understand the design and architecture of networks and network services that enable the delivery of business-grade cloud services. ...

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Designing Networks and Services for the Cloud: Delivering business-grade cloud applications and services

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Overview

Designing Networks and Services for the Cloud

Delivering business-grade cloud applications and services

A rapid, easy-to-understand approach to delivering a secure, resilient, easy-to-manage, SLA-driven cloud experience

Designing Networks and Services for the Cloud helps you understand the design and architecture of networks and network services that enable the delivery of business-grade cloud services. Drawing on more than 40 years of experience in network and cloud design, validation, and deployment, the authors demonstrate how networks spanning from the Enterprise branch/HQ and the service provider Next-Generation Networks (NGN) to the data center fabric play a key role in addressing the primary inhibitors to cloud adoption–security, performance, and management complexity.

The authors first review how virtualized infrastructure lays the foundation for the delivery of cloud services before delving into a primer on clouds, including the management of cloud services. Next, they explore key factors that inhibit enterprises from moving their core workloads to the cloud, and how advanced networks and network services can help businesses migrate to the cloud with confidence.

You’ll find an in-depth look at data center networks, including virtualization-aware networks, virtual network services, and service overlays. The elements of security in this virtual, fluid environment are discussed, along with techniques for optimizing and accelerating the service delivery. The book dives deeply into cloud-aware service provider NGNs and their role in flexibly connecting distributed cloud resources, ensuring the security of provider and tenant resources, and enabling the optimal placement of cloud services.

The role of Enterprise networks as a critical control point for securely and cost-effectively connecting to high-performance cloud services is explored in detail before various parts of the network finally come together in the definition and delivery of end-to-end cloud SLAs. At the end of the journey, you preview the exciting future of clouds and network services, along with the major upcoming trends.

If you are a technical professional or manager who must design, implement, or operate cloud or NGN solutions in enterprise or service-provider environments, this guide will be an indispensable resource.

* Understand how virtualized data-center infrastructure lays the groundwork for cloud-based services

* Move from distributed virtualization to “IT-as-a-service” via automated self-service portals

* Classify cloud services and deployment models, and understand the actors in the cloud ecosystem

* Review the elements, requirements, challenges, and opportunities associated with network services in the cloud

* Optimize data centers via network segmentation, virtualization-aware networks, virtual network services, and service overlays

* Systematically secure cloud services

* Optimize service and application performance

* Plan and implement NGN infrastructure to support and accelerate cloud services

* Successfully connect enterprises to the cloud

* Define and deliver on end-to-end cloud SLAs

* Preview the future of cloud and network services

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Product Details

  • ISBN-13: 9781587142949
  • Publisher: Cisco Press
  • Publication date: 5/30/2013
  • Series: Networking Technology Series
  • Edition number: 1
  • Pages: 309
  • Sales rank: 1,373,880
  • Product dimensions: 7.20 (w) x 9.00 (h) x 0.90 (d)

Meet the Author

Huseni Saboowala is engaged at Cisco as a senior technical leader in the areas of Software Defined Networking, Cloud, and Unified Communications. He currently focuses on evangelizing the role of the network and network services in accelerating the adoption of cloud services by enterprises. His proposals have won Cisco-wide recognition and awards, and he continues to cultivate business-driven innovations that further enrich application-network interactions. Within Cisco SRG, he leads the architecture and deployment of a custom private cloud, driving his concept to reality across several groups. He has filed patents and spoken on Cloud and UC to large audiences on several occasions. Before joining Cisco, Huseni held several positions, including at Nortel, TTI (acquired by Sonus Networks), and dynamicsoft (acquired by Cisco). Over the past 18 years, his activities have ranged from solution architecture, design, validation, and deployment to leadership of global teams, innovation coaching, and developing technology strategies. He holds a Bachelor’s degree in Electronics Engineering from the University of Bombay, and a Master’s degree in Software Engineering from Kansas State University.

Muhammad Abid is an innovator who is currently working as a senior product manager in the Services and Routing Group at Cisco. He is engaged in developing the next generation of platforms and innovative technologies that will support data center interconnect and software defined network (SDN) frameworks and play a key role in enabling cloud-based services and applications. Prior to this, he was focused on architecting solutions and driving technology roadmaps across multiple business units for unified communications, collaboration, and threat defense. Before joining Cisco, Muhammad held several positions, including at T-Systems, Padcom, Telcordia, and Latham & Watkins. Over the past 18 years, he has been involved in building innovative products and designing and architecting networks for service providers and enterprises. He has also validated mobility solutions for enterprises and performed technical audits on service provider equipment and networks. He holds a Bachelor’s degree in Electrical Engineering from the City University of New York and an Executive Master in Technology Management degree from the Stevens Institute of Technology in New Jersey.

Sudhir Modali is a thinker and innovator currently putting his creative mind to work as a product manager at Cisco, working on products that fuel data center and cloud architectures. He currently focuses on the evolving application requirements and the corresponding network architectures that enable some of the biggest cloud services in the world. His expertise comes from multiple positions he has held at Cisco over the past 13 years, including customer support (TAC); QA lead; technical marketing in areas such as service provider, enterprise, and data center networks; and technologies such as data, voice, and video. He has developed and is a major contributor to several certification courses for data center and cloud fields within Cisco. He holds a Bachelor’s degree in Industrial Electronics from Shivaji University (Solapur, India).

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Table of Contents

Introduction xix

Part I Building Blocks for Offering Network Services in the Cloud

Chapter 1 Virtualization 1

Virtualization Basics 1

One to Many 2

Many to One 2

Virtualization: A Brief History 3

Server Virtualization 3

Drivers for Server Virtualization 4

Approaches to Server Virtualization 5

Components of Server Virtualization 6

CPU Virtualization 6

Memory Virtualization 7

I/O Virtualization 8

Benefits and Risks of Server Virtualization 11

Network Virtualization 12

Drivers for Network Virtualization 12

Logical Segmentation: One to Many 14

Path Isolation 14

Access Control 17

Sharing Network Services 17

Network Consolidation: Many to One 18

Software Defined Networking 19

Virtualization-Aware Networks 20

Benefits and Risks of Network Virtualization 21

Storage Virtualization 22

Drivers for Storage Virtualization 22

How Storage Virtualization Works 22

Common Implementations of Storage Virtualization 23

Array-Based Storage Virtualization 23

Network-Based Storage Virtualization 23

Benefits and Risks of Storage Virtualization 24

Summary 25

Review Questions 25

References 26

Chapter 2 Arrival of the Cloud 29

Phases of Virtualization 29

Virtualization Enables the Cloud 31

What Exactly Is Cloud Computing? 32

A Little History 34

Trends Driving the Growth of Cloud Computing 35

Impact of the Cloud 37

Spur Innovation and Entrepreneurship Globally 38

Collect and Analyze Big Data 39

Cloud Challenges 41

Security 41

Compliance 42

SLA: Reliability and Performance 42

Interoperability 43

Summary 44

Review Questions 45

References 45

Chapter 3 Cloud Taxonomy and Service Management 47

Cloud Service Models 47

Software-as-a-Service 48

SaaS Stack 49

PaaS 50

PaaS Components 52

IaaS 53

IaaS Components 54

Comparing IaaS, PaaS, and SaaS 55

Scope and Control 55

Evolution 56

Deployment Models for the Cloud 56

Public Cloud 57

Private Cloud 57

Hybrid Cloud 57

Community Clouds 59

Open Clouds: Toward the True Intercloud 59

Cloud Actors 60

Cloud Service Management and Orchestration 62

Service Orchestration 63

Summary 64

Review Questions 64

References 65

Chapter 4 Networks and Services in the Cloud 67

The CIO’s Dilemma 67

Increasing Relevance of the Network 69

World of Many Clouds 70

An Even Larger Cloud 70

Growth of Cloud Data Traffic 71

Monetization 73

Service Catalog 73

Network Services à la Carte 74

OpenStack Quantum 75

Network Containers 77

Cisco Network Services Manager 78

Evolution of Network Services for the Cloud 80

Automation 80

Virtualization Awareness and Multitenancy 80

Location Independence 81

Quick Guide to the Rest of This Book 82

Part II: Inside the Data Center Networks 82

Part III: Inside the SP Next Generation Network (WAN) 82

Part IV: Putting It All Together–Cloud Services Delivered 83

Summary 83

Review Questions 84

References 84

Part II Inside the Data Center Networks

Chapter 5 Role of the Network Infrastructure in a Virtualized Environment 85

Trends Influencing the Data Center 86

Case 1: Acquisition of a Community Bank 86

Virtualization 87

Cloud Enablement 88

Power and Cooling Considerations 88

Return on Investment 89

Economy of Scale 90

Case 2: Service Provider Enabling New Services and Content to Its Customers 91

Virtualization 92

Cloud Enablement 92

Power and Cooling Considerations 93

Return on Investment 93

Economy of Scale 94

Case 3: Public Utility Companies Offering Smart Technologies to Address Power and Energy Requirements in a More Reliable, Economic, and Sustainable Manner 97

Virtualization 97

Cloud Enablement 98

Return on Investment 98

Economy of Scale 99

Case 4: High-Performance Computing and Low-Latency Applications 99

Virtualization 100

Cloud Enablement 101

Power and Cooling Considerations 101

Economy of Scale 101

Summary of the Use Cases 102

Network Segmentation in the Data Center 102

Multitenancy 106

Network Containers 107

Virtualization-Aware Network 108

Virtual Switching 108

Network Policy 110

VM Mobility 110

Virtual Network Services 111

Fabric Intelligence for Virtual Services 111

Service Overlay 112

Summary 113

Review Questions 113

Reference 114

Chapter 6 Securing and Optimizing Cloud Services 115

Motivations to Design Secure Multitenant Networks 118

HTTP Tunneling 119

Web Proxy/Caching 121

Design Considerations for Securing Multitenant Data Centers 124

Threat: Identity Theft 124

Solution: PCI DSS Compliance 125

Operational Challenges 128

Penalties 129

How the Cloud Model Can Help 129

Information Confidentiality 129

Operational Challenges 132

Penalties 132

How the Cloud Model Can Help 132

How Virtual Security Is Enabled: Solutions and Architectures-Based Approach 134

Traditional Security Approaches as Applied in Virtual Environment 134

Security Containers: Contexts and Zones 134

Segmentation and Access Control Lists 134

Secured Access 135

Application Security 135

Virtual Appliance Approach 135

Cisco ASA1000v Tenant Edge Security Solution 136

Cisco Virtual Secure Gateway 138

Deployment Considerations 138

Summary 141

Review Questions 141

References 142

Chapter 7 Application Performance Optimization 143

Application Architectures in the Cloud 144

Three-Tier App Architecture in the Virtualized World 146

Provisioning and Management 148

Application Performance in the Cloud 148

Drivers for the Transition from Physical to Virtual Network Services 153

Virtualization Awareness 153

Agility, Elasticity 153

Multitenancy 154

Virtualized Application Delivery Solutions 154

WAN Acceleration 154

Server Load Balancing 157

Summary 157

Review Questions 158

Part III Inside the SP Next Generation Network (WAN)

Chapter 8 IP NGN Infrastructure That Supports Cloud Services 159

IP NGNs Evolve in Line with the Cloud 160

Role of DCI Technologies in Delivering Cloud Services 162

Key Use Cases Enabled by DCI in the Cloud 162

Workload Mobility in the Cloud 165

Data Center Interconnect Requirements for the Cloud 166

DCI Solutions to Build Virtualized and Distributed Cloud Data Centers 167

Transport Option 1: Layer 2 over Dark Fiber 168

Transport Option 2: Layer 2 over MPLS 173

Transport Option 3: Layer 2 over IP 176

Ingress and Egress Route Path Optimization 178

Summary 182

Review Questions 183

References 184

Chapter 9 Securing Cloud Transport and Edge Using NGN Technologies 187

Security Challenges in the Cloud 187

Key Requirements to Secure the Cloud 188

NGN Solutions to Secure the Cloud 189

Providing Secure Access to the Cloud 190

Internet Protocol Security 192

Transport Layer Security Protocol 200

Datagram Transport Layer Security Protocol 201

Clientless Versus Full Tunnel 201

Securing the Cloud Edge 202

Multitenant Traffic Separation 206

Summary 209

Review Questions 210

References 210

Chapter 10 Optimizing and Accelerating Cloud Services 213

Enhancing Performance of Cloud Applications and Services 213

Role of IP NGN in Optimizing Cloud Applications and Services 213

How Cloud Services Are Placed Today 215

Network Positioning System 215

Cloud Service Placement at an Optimal Location 216

NPS Solution Components 219

NPS Operation 221

Serving Cloud-Based Applications from an Optimal Location 222

Application Layer Traffic Optimization 223

Dynamic Extension of Customer VPNs 224

Accelerating Cloud Services 224

Key Benefits of the Cisco WAAS Solution 225

Summary 228

Review Questions 229

References 229

Part IV Putting It All Together: Cloud Services Delivered

Chapter 11 Connecting Enterprises to the Cloud 231

Cloud Aware Enterprise Networks 233

How Enterprises Connect to the Cloud 235

Enterprise Managed Cloud Connector Deployment 235

Cloud Provider—Managed Cloud Connector Deployment 235

Examples of Cloud Connectors 236

Cloud Web Security Connector 236

Webex Cloud Connected Audio 237

Ctera Cloud Storage Connector 238

Cisco Asigra Cloud Connector 240

Future Cloud Connector Concepts 241

Cloud Broker Connector 241

Federated Identity Connector 243

SAML 244

OAuth 245

Cisco Ping Identity Connector 246

Cisco Extensible Cloud Connector Solutions 247

Summary 247

Review Questions 248

References 249

Chapter 12 End-to-End Cloud SLAs 251

Defining and Monitoring SLAs 252

Network Service Provider 253

Colocation Service 255

Application Hosting Service Provider 256

SLA Targets and Penalties 257

SLA Assurance and Methodology 258

SLA Management Framework 260

SLA in a Cloud Environment 262

Complexity of Cloud SLA 262

Service Level Metrics 263

Cloud Service Level Metrics 263

Network Container Level Metrics 264

Component Level Metrics 266

Location/Scope for the End-to-End Measurements 266

Guaranteed SLA 267

End-to-End SLAs 270

Summary 271

Review Questions 272

References 272

Chapter 13 Peeking into the Future 273

Future Clouds 274

The Intercloud 274

Internet Analogy 275

Intercloud Use Case 276

Deeper Dive into the Intercloud Vision 277

Intercloud Challenges and the Role of Networks 278

Internet of Things 280

A Bigger Cloud 281

IoT Use Cases 281

Sensor Networks and IP 285

IoT Challenges: Networks to the Rescue 286

Network Evolution Continues 288

Software-Defined Networking 288

Hybrid Approach 289

Challenges 289

Application-Network Interactions 290

Summary 293

Review Questions 293

References 294

Appendix A Answers to Review Questions 295

9781587142949 TOC 4/23/2013

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