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Network Virtualization

Book

  • Sorry, this book is no longer in print.
Not for Sale
  • Description
  • Sample Content
  • Updates
  • Copyright 2007
  • Edition: 1st
  • Book
  • ISBN-10: 1-58705-248-2
  • ISBN-13: 978-1-58705-248-4

Share network resources and reduce costs while providing secure network services to diverse user communities

  • Presents the business drivers for network virtualization and the major challenges facing network designers today
  • Shows how to use virtualization designs with existing applications, such as VoIP and network services, such as quality of service and multicast
  • Provides design alternatives for different real-world deployment scenarios, with configuration examples and case studies 
Today's enterprises have several groups of users with specific needs. The differences between these groups translate into specific network requirements. Within some organizations, these requirements are so dissimilar that the different groups need to be treated as totally separate customers by the enterprise's IT department. As the number of groups increases, keeping them separate and secure is a challenge to IT departments, particularly with the advent of wireless networks, the requirement for enterprise-wide user mobility, and the need for cross group collaboration with resource sharing on a per project basis. Network Virtualization provides design guidance for virtualized enterprise networks and arms network architects with the background necessary to make sound technological choices in the face of different business requirements. As a means of introduction, Network Virtualization lays out the fundamentals of enterprise network design. The book builds upon these fundamental principles to introduce the different virtualization methods as the logical evolution of the enterprise network architecture. Detailed descriptions of the technology, design principles, network configurations, and real-world case studies are provided throughout the book, helping readers develop a pragmatic understanding of virtualized enterprise network architectures. Specific examples are included that tailor deployment advice to the small, medium, and large enterprise environment.

Online Sample Chapter

Network Virtualization: A Basic Virtualized Enterprise

Downloadable Sample Chapter

Download - 365 KB -- Chapter 3: A Basic Virtualized Enterprise

Table of Contents

Table of Contents

Introduction

Part  I A Network Architecture for the Virtual Enterprise3

Chapter 1 Business Drivers Behind Enterprise Network Virtualization

Why Virtualize?

Visitors, Partners, Contractors, and Quarantine Areas

Regulatory Compliance

Secure Service Areas

Network Consolidation

Acquisitions and Mergers

Multitenant Enterprises

Virtual Project Environment: Next-Generation Business Processes

Business Requirements Drive Technical Requirements

Summary

Chapter 2 Designing Scalable Enterprise Networks

Hierarchical Campus Design

Virtualizing the Campus

WAN Design

WAN Provider Service Offerings

WAN Architecture

WAN Resiliency

WAN Routing Considerations

Securing the WAN

WAN Virtualization

Summary

Chapter 3 Basic Virtualized Enterprise

The Virtual Enterprise

Transport Virtualization–VNs

VLANs and Scalability

Virtualizing the Routed Core

The LAN Edge: Authentication and Authorization

Central Services Access: Virtual Network Perimeter

Unprotected Services

Summary

Chapter 4 A Virtualization Technologies Primer: Theory

Network Device Virtualization

Layer 2: VLANs

Layer 3: VRF Instances

Layer 2 Again: VFIs

Virtual Firewall Contexts

Network Device Virtualization Summary

Data-Path Virtualization

Layer 2: 802.1q Trunking

Generic Routing Encapsulation

IPsec

L2TPv3

Label Switched Paths

Data-Path Virtualization Summary

Control-Plane Virtualization–Routing Protocols

VRF-Aware Routing

Multi-Topology Routing

Control-Plane Virtualization Summary

Summary

Chapter 5 Infrastructure Segmentation Architectures: Theory

Hop to Hop

Layer 3 H2H

Single Address Space Alternatives

H2H Summary

Tunnel Overlay for L3VPN

L3VPN Using GRE and IPsec Overlay

Putting It All Together: DMVPN

Layer 3 Tunnel Summary

Tunnel Overlay for Layer 2 VPNs

Layer 2 P2P Overlay Using L2TPv3

Layer 2 P2P Overlay Using MPLS

Layer 2 VPN MP2MP Using MPLS (VPLS)

Layer 2 VPN Summary

Peer-Based Model for Layer 3 VPNs

RFC 2547bis the MPLS Way

RFC 2547bis Forwarding-Plane Alternatives

Index

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