MPLS for Metropolitan Area Networks  book cover
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1st Edition

MPLS for Metropolitan Area Networks




ISBN 9780849322129
Published November 15, 2004 by Auerbach Publications
448 Pages 121 B/W Illustrations

 
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Book Description

Metro Service Providers are increasingly turning to Multi-Protocol Label Switching (MPLS) to converge disparate networks and services into a unified core, maintain quality, and deliver additional value-added capabilities. MPLS for Metropolitan Area Networks addresses service providers' challenges by demonstrating solutions provided by MPLS features such as traffic engineering (TE), fast reroute, VPNs, virtual private LAN services (VPLS), and QoS.

The text opens with an overview of metro networks and MPLS, describing business opportunities and challenges and how mission-critical applications can be deployed within Metropolitan Area Networks (MANs). It then examines traffic engineering issues, focusing on fundamental TE concepts, network control, trunk attributes, constraint-based routing (CBR), Resource Reservation Protocol with TE extensions (RSVP-TE), and resource optimization.

Following a discussion on how MPLS can bring increased reliability to MANs, the author then concludes the book with a detailed analysis of the service aspect of MANs. Topics reviewed include L3 and L2 MPLS VPNs, geographically dispersed Ethernet multipoint services, virtual private LAN services (VPLS), and the integrated services (IntServ) and differentiated services (DiffServ) QoS models with respect to MPLS.

The entire book adopts a simplify-and-exemplify approach, containing a series of real-life case studies and using representative topologies as a basis for illustrating the concepts discussed in each chapter. This learning-by-example approach helps you to remember and understand the complex MPLS concepts and technologies. You can then apply what you have learned from these examples and scenarios to your specific networking environments.

Table of Contents


METROPOLITAN AREA NETWORKS AND MPLS
Requirements of Metropolitan Area Network Services
Metropolitan Area Network Overview
The Bandwidth Demand
The Metro Service Provider's Business Approaches
The Emerging Metro Customer Expectations and Needs
Some Prevailing Metro Service Opportunities
Service Aspects and Requirements

Roles of MPLS in Metropolitan Area Networks
MPLS Primer
MPLS Applications

TRAFFIC ENGINEERING ASPECTS OF METROPOLITAN AREA NETWORKS
Traffic Engineering Concepts
Network Congestion
Hyper Aggregation Problem
Easing Congestion
Network Control
Tactical versus Strategic Traffic Engineering
IP/ATM Overlay Model
MPLS and Traffic Engineering
MPLS Traffic Engineering Tasks


Functions of Trunk Attributes
Traffic Parameters
Policing Attributes
Priority Attributes
Preemption Attributes
Resilience Attributes
Generic Path Selection Attributes
Dynamic Path Management Parameters
Basic Operations of Traffic Trunks

Constraint-Based Routing
MPLS Traffic Engineering Operation
Limitations of Traditional IGPs
Resource Attributes
OSPF Traffic Engineering
ISIS Traffic Engineering
Constraint-Based Routing Operation


Resource Reservation Protocol and Traffic Engineering
Terminology
Evolution of RSVP
RSVP-TE Messages and Objects
RSVP-TE Path Setup Operation
Admission Control and Preemption
Forwarding Traffic across an LSP Tunnel
Re-optimization and Rerouting
Scaling RSVP


Traffic Engineering Metro Area Networks
Background Information
Case Study 7.1: Hop-by-Hop Routed LSPs
Case Study 7.2: Explicitly Routed LSPs (Loose Explicit Route Example)
Case Study 7.3: Bandwidth Manipulation (CBR Example 1)
Case Study 7.4: Link Affinity (CBR Example 2)

RELIABILITY ASPECT OF METROPOLITAN AREA NETWORKS
Reliability in MPLS Based Metropolitan Area Networks
Terminology
Failure Protection Types
RSVP Extensions for Local Repair
Head-End Behavior
Point of Local Repair Behavior
Notification of Local Repair
Case Study 8.1: Path Protection
Case Study 8.2: Fast Reroute with Detour LSPs

SERVICE ASPECT OF METROPOLITAN AREA NETWORKS
Layer-3 and Layer-2 MPLS VPNs
L3 MPLS VPN Overview
Architectural Components of L3 MPLS VPN
L3 MPLS VPN Operation
L2 MPLS VPN Overview
Martini Point-to-Point Tunneling Approach
Case Study 9.1: L3 MPLS VPNs with Static Routes and OSPF
Case Study 9.2: L3 MPLS VPNs with RIPv2 and EBGP
OSPF and L3 MPLS VPN
Case Study 9.3: Deploying OSPF on Customer Side without Area 0 (Using Cisco Routers)

Virtual Private LAN Services
Multipoint L2 VPN Service
Service Offerings
Functional Components of VPLS
Frame Forwarding
VPLS versus Martini Point-to-Point L2 VPN Service
VPLS Implementation
Scaling LDP-Based VPLS
Comparison between VPLS and L3 MPLS VPN
Case Study 10.1: Virtual Leased Line Service
Case Study 10.2: Virtual Private LAN Services



QUALITY OF SERVICE ASPECT OF METROPOLITAN AREA NETWORKS
QoS and MPLS
The Need for Different Service Classes
Terminology
QoS Models for MPLS
DiffServ and MPLS
DiffServ-Aware MPLS-TE
Per-VPN QoS Service Models
Case Study 11.1: QoS and L2 MPLS VPN
Case Study 11.2: QoS and L3 MPLS VPN

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