SDN and NFV Simplified · A Visual Guide to Understanding Software Defined Networks and Network Function Virtualization (Rachelle Noel's Library) by Doherty, Jim -- Read -- Imperial Library of Trantor

Index

About This E-Book Title Page Copyright Page Dedication Page Contents Acknowledgments About the Author Introduction

Whiteboards Who Is This Book For, and What Will You Get Out of It? How This Book is Organized

Part 1: Virtualization 101: The Basics of Virtualization Part 2: Virtualization 201: Virtualizing the Data Center (a.k.a. Clouds) Part 3: Network Functions Virtualized: Why Stop With Servers? Part 4: Modern Networking Approaches to Virtualization Part 5: Software Defined Networks: Virtualizing the Network Part 6: SDN Controllers Part 7: Virtualized Networks: Connecting It All Together Part 8: Security: The Security Thing Part 9: Visibility Part 10: The Big Picture

Part 1: Virtualization 101: The Basics of Virtualization

1. Primer on Virtualization

Server Proliferation, Massive Power Bills, and Other IT Nightmares How Servers Work How VMs Fix the Underutilized Server Problem Enter the Hypervisor Why Are Virtual Machines Such a Big Deal?

2. Benefits of Virtual Machines

Reduced Cost Less Space (Even More Cost Savings) Availability and Flexibility Faster Application Spin-Up and Provisioning Easier Access for Development Believe the Hype!

3. Hypervisors (VMWare, KVM, and Others)

An Operating System for Operating Systems A Virtual Machine Monitor Types of Hypervisors Hypervisor Vendors

KVM Xen VMware ESXi Microsoft Hyper-V

Choosing a Hypervisor Summary

4. Managing Virtual Resources

What Is a Workload? Managing Virtual Resources in the Hypervisor Virtual Resource Providers and Consumers So How Do You Manage Virtual Resources?

Part 2: Virtualization 201: Virtualizing the Data Center (a.k.a. Clouds)

5. Virtualized Data Centers (Some Call Them Clouds)

Benefits of Virtualizing the Data Center

Less Heat Buildup Reduced Hardware Spend Faster Deployment Testing and Development Faster Redeploy Easier Backups Disaster Recovery Server Standardization Separation of Services Easier Migration to the Cloud

Is It a Cloud Yet? The Five Cloud Attributes

On-Demand Self-Service Ubiquitous Network Access Pay Per Use Rapid Elasticity Location-Independent Resource Pooling

Types of Clouds

Software as a Service Infrastructure as a Service Platform as a Service

Cloud Deployment Models

Private Clouds Shared Multitenant Clouds Public Clouds Hybrid Clouds

6. Virtual Machine Connectivity

Networking in Traditional Data Centers Virtualized Data Center Design Addressing with Virtual Machines

7. Networking Gear in Virtualized Data Centers

The Evolution of Data Center Switching Cloud and Data Center Layout and Architecture Virtualized Aware Network Switches

8. VMware, VSphere, VMotion, and VXLAN

VMware Product Design

vSphere VMotion VXLAN

Summary

9. Multitenancy and the Problems of Communal Living

SaaS Multitenancy

Pros and Cons of SaaS Multitenancy

IaaS Multitenancy

Pros and Cons of IaaS Multitenancy

Part 3: Network Functions Virtualized: Why Stop With Servers?

10. How Do You Virtualize a Network?

Network Virtualization How Does This Fit with NFV and SDN?

Server Virtualization Network Virtualization Network Functions Virtualization Software-Defined Networking

Virtualizing the Network

11. Virtualizing Appliances

Layer 4 Through 7 Network Services

Firewalls VPNs SSL Offload Load Balancer

Fighting Virtualization with Virtualization What’s the “So What”?

12. Virtualizing Core Networking Functions

Virtualization Recap Where Core Functions Are Being Virtualized

13. What About Scalability and Performance?

Scalability Versus Performance Performance in Network Virtualization Scalability and Performance in Virtual Networks Scalability and Performance for Virtual Appliances Scalability and Performance of Virtualized Networks Summary

Part 4: Modern Networking Approaches to Virtualization

14. From Consumers to Creators

The Emergence of SaaS Cloud Business Consumer-Creators

15. OpenFlow

OpenFlow History How OpenFlow Works

16. VMware Nicira

VMware NSX

Network Virtualization with NSX How VMware Leverages Nicira (NSX)

17. Cisco Insieme

Cisco’s Hybrid SDN Solution Cisco SDN and Insieme

18. OpenStack

Applications on Modern Networks

Part 5: Software Defined Networks: Virtualizing the Network

19. The Evolution of the Data Center Network

Networks Worked Great, Until They Didn’t Traditional Data Center Design Goals

High Availability Low Latency Scalability Security

The Cost Model Explodes How We Got Here

20. What’s Wrong With the Network We Have?

A Brief Review of Networking

Control Planes and Forwarding Planes The Cost of Complexity Decoupling Networking Applications from Networking Gear

21. How SDN Works

Understanding SDN

The Application Layer The Control Layer The Infrastructure Layer

A Programmable Network So What’s the “So What?”

22. The Economic Impact of SDN, NFV, and the Cloud

Winners in SDN, NFV, and the Cloud

How the “Little Guy” Wins How Large Enterprises Win with SDN, NFV, and the Cloud

Losers in the Cloud The Economic Value of Increased Innovation

Part 6: SDN Controllers

23. SDN Controllers

Centralized Control

Commercial Versus Open Source Controllers

Network Virtualization

24. The OpenDaylight Project

How the ODL Architecture Works The ODL Controller Platform

25. The Fight to Control Your Network

Separation of Internal Controls You Can See It, But Who Controls It?

26. What’s the Business Case for SDN?

SDN Use Case Examples

Data Center Optimization Network Access Control Network Virtualization Virtual Customer Edge Dynamic Interconnects Virtual Core and Aggregation

Summary

Part 7: Virtualized Networks: Connecting It All Together

27. Goodbye Truck Rolls

Data Center Scale A New Maintenance Philosophy Summary

28. What If the Shoe Doesn’t Fit?

Where SDN Does Not Fit When Should You Adopt SDN? Stuck in the Middle

29. Service Chaining

Service Chaining in SDN

30. NFV: What Happens to All the Network Appliances?

How Network Appliances Are Different

Replacing Big Hardware Appliances with Many Small Virtual Appliances

When Not to Get Rid of an Appliance

Part 8: Security: The Security Thing

31. Where’s My Data, Exactly?

Storage Virtualization Storage-Area Networks Data Location and Security So What Are the Nontechnical Issues That We Need to Address? Summary

32. Preventing Data Leakage

Minimizing Data Loss Data Loss Prevention

33. Logging and Auditing

Where Logging Matters Summary

34. Encryption in Virtual Networks

Data in Motion Data at Rest Key Management Best Practices

35. Everything Old Is Now New Again

How We Got Here

The Mainframe Model The Personal Computer Model The Networked Model The Internet Model Grid Computing Model Cloud Computing Model

What We Have Learned Retro Security Considerations Recycled Ideas on Mobile and Web Apps

Part 9: Visibility

36. Overlay Networks

MPLS: The Original Virtual Network Virtual Layer 2 Designs Enter SDN Common Encapsulation Techniques

37. Network Management Tools

What’s in the Tool Bag? Tapping In Gaining Visibility

38. Quality of Experience

Deep Packet Inspection

39. Monitoring Traffic Between Virtual Switches

Getting VM Visibility Monitoring VM-to-VM traffic How VxLANs Work Creating a “Visibility Layer”

Part 10: The Big Picture

40. Pulling It All Together

Why the Network Had to Change How SDN and NFV Tie Together SDN’s Downside: A Loss of Visibility SDN Orchestration

41. How SDN and NFV Will Affect You

Operational Domains

Mobility Virtualization Virtual CPE and Service Chaining NFV and Service Orchestration WAN Optimization and Innovation Network Optimization Policy-Driven Application Provisioning and Delivery

SDN Use Cases

Network Access Control Network Virtualization Data Center Optimization Direct Inter-Connects

Embracing SDN and NFV

42. What’s Next in Networking?

Separate but Complementary Virtual Customer Premise Equipment

SDN and NFV Working Together

Summary

Index

← Prev
Back
Next →

← Prev
Back
Next →