MPLS and Next-Generation Networks: Foundations for NGN and Enterprise Virtualization

Understand the business case for deploying MPLS-based services and solutions Provides network managers and architects a precise MPLS primer Defines MPLS service problems and their associated solutions Includes ROI models for MPLS-based solutions Discusses pros and cons of various options for each MPLS service Network managers often question the value that MPLS brings to their business environment. This book provides them with a precise guide for evaluating the benefits of MPLS-based applications and solutions. The book guides the network manager through the business case for MPLS by exploring other technology alternatives, including their applications, benefits, and deficiencies. Understanding the service creation process as the basis for MPLS-based solutions is pivotal when describing the benefits that MPLS offers. Furthermore, the book explores MPLS technology and its components, providing an overview of the architecture necessary to reap the true advantages that MPLS brings to a service provider or enterprise network. These advantages include new revenue opportunities and a total cost of ownership reduction that positively impacts a company's bottom-line. ROI models and case study examples further confirm the business impact and help decision-makers create a blueprint for MPLS service creation. Specific aspects such as security, network management, advanced services and the future of the technology complete the book, helping decision makers assess MPLS as a candidate for implementation. In short, you can use this comprehensive guide to understand and build a business case for the inclusion of MPLS in your network.

Table of Contents:
Contents Introduction Part I            The Business Case for MPLS                                         Chapter 1        Dynamics of Service Creation and Deployment Industry Dynamics and Challenges What About the Enterprise Market? Service Provider Business Engineering Business Drivers and Requirements Enterprise Customers Enterprise Motivations for Migrating to Layer 3 Services Service Providers and Enterprise: The Battle of Outsourcing Versus Do-It-Yourself Do-It-Yourself Enterprise Segmentation Central Services with an Enterprise Campus Subscribing to a Managed Layer 3 MPLS VPN Service The Case for Building VPNs—Layer 2 or Layer 3 Existing Technologies—Frame Relay, ATM, and IP-Based Networks: What Can They Solve? Frame Relay Asynchronous Transfer Mode The Internet Protocol Service Examples Summary   Chapter 2            The Scope of Service Types Overview of Layer 2 Services Ethernet Services Next-Generation Network Overview and Interworking Functions Layer 3 Services Remote Access Value-Added Services Summary   Part 2                The Technical Case for MPLS Chapter 3              Technology Overview: Making the Technology case for MPLS and Technology Details Available Technologies and Options Why MPLS? (High-Level Detail) MPLS and Quality of Service Differentiating Service with Traffic Engineering Multicast Benefits MPLS Technology Details Layer 3 VPNs Peer-to-Peer Model VRF and Its Function MPLS Label Stack Role Topologies Carrier Supporting Carrier and Inter-Provider Autonomous Systems Traffic Engineering DiffServ Layer 2 VPNs Summary   Part 3                MPLS Services and Components Chapter 4        Layer 2 VPNs Taxonomy Introducing AToM Pseudowire Systems Architecture Packet Forwarding Layer 2 Transport Types (Like-to-Like) Ethernet Service Link Layer Service Frame Relay Service ATM Service117 Configuration of Pseudowires Layer 2 Interworking Interworking Modes Interworking Models and Applications Virtual Private LAN Service Considerations for VPLS Provisioning and Signaling LDP Signaling BGP Signaling Benefits of L2VPNs Inter-AS L2VPNs Supported IETF Standards Summary Standards and References   Part 4              Layer 3 VPNs1 Chapter 5       Technology Overview Separation of Routing Information Between VPNs Constrained Distribution of Routing Information Forwarding Packets Through the Network Core Packet Flow Through the Network Corporate Intranet Corporate Extranet Internet Access Dedicated per-VPN Internet Access Shared PE—Internet and VPN Dedicated PE—Shared Backbone Managed Central Service—Shared Internet Access Scaling MPLS VPNs to Multi-AS, Multi-Provider, and Hierarchical Networks Inter-AS VPNs Carrier Supporting Carrier Heterogeneous Networks Managed Central Services Making Applications and Services VRF-Aware VRF-Aware Address Management Supported IETF Drafts Summary Standards and References:   Chapter 6                   Remote Access and IPSec Integration with MPLS VPNs Technology Overview Dial Access Individual Access CE Dial Backup Access Dial-Out Access DSL Access Routed Encapsulation Bridged Encapsulation Cable Access PE-CE Routing Protocols Scalability and Network Convergence for Remote Access Summary   Chapter 7             MPLS Security Security and NGN Security Overview and MPLS MPLS VPN and Security Attack Scenarios Internet/Extranet and MPLS Security IPSec MPLS VPN (BGP VPN) Security Issues and Options Layer 2 and Unmanaged VPN Service Considerations Design Option Examples Carrier’s Carrier Network and Inter-Autonomous Considerations Customer Edge Router Security Considerations Overall Best Practice Recommendations Summary Standards and References   Chapter 8             Traffic Engineering Problem Statement Technology Overview IGP Extensions and Distribution of Constraints Signaling of TE Tunnels Forwarding Packets Through the Network Core Sequence of Operation TE Tunnel Maintenance TE Applications and Examples Intra-Area TE Inter-Autonomous System TE Quality of Service and TE Traffic Handling of Delay-Sensitive Traffic Protection and Restoration Link Protection Node Protection Path Protection Usage Scenarios Scalability of Protection Mechanisms Scaling MPLS TE MPLS Traffic Engineering and Multicast Standards and References Summary   Chapter 9             Quality of Service Problem Statement IP QoS QoS Building Blocks IntServ DiffServ Packet Handling The Hybrid Model MPLS QoS MPLS DiffServ Traffic Engineering and DiffServ DiffServ-Aware Traffic Engineering MPLS QoS Service Examples Point-to-Cloud Model Olympic Service Model Traffic-Engineered Voice Model Virtual Leased Line On-Demand QoS MPLS and IntServ Traffic Flows to MPLS DiffServ Mapping Tunnel-Based Admission Control Standards and References Summary   Chapter 10             Mutlicasts and NGNs Problem Statement MPLS Multicast VPN Overview Multicast VPN Operational Details MPLS Multicast VPN Applications and Examples Multicast Security and Management Considerations Standards and References Summary   Chapter 11             IPv6 and MPLS Problem Statement Technology Overview IPv6 PE Multiprotocol BGP Extensions Packet Path IPv6 VPNs (6VPE) Route Tagging Virtual Routing and Forwading with IPv6 Packet Path The Coexistence of IPv4 L3VPN and IPv6 L3VPN IPv6 Network Core Inter-AS Networks for 6PE and v6VPNs IPv6 QoS MPLS QoS for IPv6 Management and IPv6 Summary   Part 4             Bringing Your MPLS Plan Together Chapter 12     Network Management and Provisioning Problem Statement Fault Management, Configuration Management, Accounting Management, Performance Management, and Security Management MPLS OAM VRF-Aware ICMP Ping and LSP Ping/Trace Mechanisms Dealing with Equal Cost Multipaths Noncompliant Routers LSR Self-Test Virtual Circuit Connection Verification and Bidirectional Forwarding Detection A Word About Interworking OAM Any to Any Local Switching Encapsulation Types and Modes ATM over MPLS ATM N:1 Mode ATM 1:1 Mode AAL5 SDU Mode AAL5 PDU Mode Frame Relay over MPLS Generic Failure Types Interface Failure Pseudowire Failures Tunnel LSP Failures Configuration Management for MPLS-Based Networks Accounting for MPLS-Based Networks Performance Management for MPLS-Based Networks Security Management for MPLS-Based Networks Per-VPN Management IP Addressing VRF-Aware Network Address Translation Supported MIBs Standards and References Summary   Chapter 13             Design Considerations: Putting it All Together VRF-Aware Feature IP Addressing: VRF-Aware DHCP DHCP Deployment Examples Deployment Guideline Summary VRF-Aware Network Address Translation NAT-PE System Flow Inside-to-Outside Packet Flow Outside-to-Inside Packet Flow Deployment Guideline Summary Management, Provisioning, and Troubleshooting Equipment Scalability Versus Network Scalability Network Element Characteristics Network Parameters Network-Wide Scale Management and Scalability Layer 2 VPNs—What to Expect Same Grade of Service Planning and Sizing Density Management Summary   Chapter 14             MPLS Case Studies The Background on Equant Equant Business Drivers Equant Services VPN Bridge Case Study Background Customer Issues/Objectives The Account Team’s Keys to Success Case Study Conclusion Summary   Chapter 15             The Future of MPLS Integrating IP and Optical Networks (Transport Area) How Does it Work? Bandwidth On-Demand Service Challenges Faced with G-MPLS and UCP Future Layer 3 Services Label-Switched Multicast Dynamic Encrypted VPNs Content-Based Services Adaptive Networks for Integration of Voice and Video Security Enhancements Future Layer 2 Services ATM-MPLS Interworking Layer 2 VPNs Across Multiple Provider Networks VPLS Service Across a Non-Ethernet Last Mile Future Enhancements in Provisioning and Management Adaptive Self-Healing Networks Increasing Enterprise Deployment of MPLS Summary   So, What Is the Future of MPLS? A View from George Swallow A View from Adrian Farrell Index