Building MPLS-Based Broadband Access VPNs

, by Reddy, Kumar

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ISBN: 9781587051364 | 1587051362
Cover: Hardcover
Copyright: 1/1/2005

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Summary

Supplemental Materials

Master the design and management of MPLS-Based Broadband Access VPNs to maximize client performance.

Foreword

xvi

Introduction

xviii

Introduction: Broadband Access and Virtual Private Networks

(24)

Broadband Networks and Operators

(4)

The Players in Broadband

(1)

DSL Networks

(1)

Metropolitan-Area Networks

(1)

The Role of the Access Network

(1)

Shifting the Location of the Processing

(1)

Service Models: Who Buys What

(2)

Business Subscribers

(1)

Residential Subscribers

(1)

IP Virtual Private Networks for Broadband

(5)

A VPN Taxonomy

(2)

Layer 2 and Layer 3 VPN Alternatives

(1)

Overlay VPNs

(1)

The Peer Model

(1)

A Simplified Framework for Broadband VPN

(9)

Data Confidentiality

(1)

Efficient Operation

(1)

Efficient Routing

(1)

High Availability and Resiliency

(1)

Device-Level Redundancy

(1)

Network-Level Redundancy

(1)

Multicast

(1)

Quality of Service

(1)

Fragmentation

(1)

Authentication, Authorization, and Accounting (AAA)

(1)

Service Selection

(1)

Support for Any IP Addressing Plan

(1)

Efficient Address Assignment

(1)

Additional Layer 3 Services

(1)

Summary

(3)

Delivering Broadband Access Today: An Access Technologies Primer

(42)

Architecture 1: Bridged Access Networks

(26)

Bridging in DSL Using RFC 2684

(3)

RBE Configuration

(1)

RBE Quality of Service

(1)

RBE Routing

(2)

RBE Address Assignment

(2)

More Bridged Access---Cable and DOCSIS

(2)

DOCSIS Cisco IOS Configuration

(1)

Cable Address Assignment

(2)

Broadband Ethernet---Ethernet to the Home/Business (ETTX)

(3)

Long Reach Ethernet

(1)

ETTX Configuration

(1)

ETTX Quality of Service

(1)

ETTX Address Assignment

(2)

Security Considerations for Bridged Broadband Architectures

(1)

Security in DSL Broadband Networks

(1)

Security in Cable Broadband Networks

(1)

Security in Ethernet Broadband Networks

(2)

Authentication and Accounting in Bridged Broadband Architectures

(1)

Architecture 2: Point-to-Point Protocol Networks

(12)

PPP over Ethernet---The CPE as a Bridge

(2)

PPPoE Configuration

(2)

PPPoE Service Selection and Discovery

(1)

PPP over ATM: The CPE as a Router

(1)

PPPoA Configuration

(1)

PPP Address Assignments

(2)

Use of On-Demand Address Pools

(1)

PPP Quality of Service

(1)

PPP Authentication, Accounting, and Security

(1)

Port-Based Authentication

(1)

PPP Security

(1)

Summary

(3)

VPNs in Broadband Networks

(70)

Tunnels, Hubs, and Spokes

(6)

To Distribute or Centralize?

(3)

Access VPN Requirements Reminder

(2)

Case 1: A Site VPN with Non-IP Traffic---GRE

(15)

GRE Protocol and Operation

(2)

GRE Configuration

(9)

GRE Design Considerations

(4)

Case 2: VPN over Anything---IPSec

(24)

IPSec Protocol and Operation

(1)

AH and ESP Headers for Authentication and Encryption

(1)

Key Exchange with IKE

(1)

IPSec Tunnel and Transport Mode Encapsulations

(1)

IPSec Configuration

(2)

IPSec Configuration Examples

(1)

Simple Site-to-Site IPSec

(3)

Encrypted GRE

101

(6)

Dynamic Multicast VPN

107

(5)

IPSec for Remote Access

112

(1)

IPSec Design Considerations

113

(2)

Case 3: L2TP---For Open Access

115

(20)

L2TP Protocol and Operation

115

(2)

L2TP Tunnel Setup

117

(2)

L2TP Session Setup

119

(1)

L2TP Configuration

120

(7)

Scaling L2TP Networks

127

(1)

Data Plane: L2TP LNS Redundancy and Load Balancing

128

(3)

Control Plane: AAA Redundancy and Load Balancing

131

(1)

L2TP Tunnel Switching

131

(2)

L2TP Design Considerations

133

(2)

Other Open Access Solutions

135

(2)

Open Access with Network Address Translation

135

(1)

Open Access with Policy-Based Routing

136

(1)

Summary

137

(2)

Introduction to MPLS

139

(30)

Definition of MPLS

139

(7)

IP and MPLS Packet Forwarding

141

(2)

MPLS Encapsulation

143

(1)

Label Distribution

144

(1)

LDP Operation

144

(2)

Traffic Engineering

146

(5)

MPLS-TE Cisco IOS Configuration

151

(1)

Layer 3 VPN Services (RFC 2547)

152

(11)

MPLS-VPN Attributes

156

(2)

MPLS-VPN Cisco IOS Configuration

158

(5)

MPLS QoS

163

(4)

QoS in MPLS Packet Headers

163

(1)

Complication 1: DSCP

163

(1)

Complication 2: ATM

164

(1)

Tunnels and Pipes

164

(3)

DiffServ-Aware Traffic Engineering

167

(1)

Summary

167

(2)

Introduction to MPLS-Based Access VPN Architectures

169

(48)

Architecture Overview of an MPLS-Based Access VPN

169

(14)

The Role of the PE

171

(1)

Mapping Cable Subscribers to VRFs

172

(2)

Mapping Ethernet Subscribers to VRFs

174

(1)

Mapping DSL Subscribers to VRFs

175

(1)

Routed Interfaces

175

(1)

Routed Bridge Encapsulation

176

(1)

PPP

176

(1)

Virtual Home Gateway

177

(5)

VHG for Cable or Ethernet

182

(1)

Examples of the Basic Architectures

183

(26)

Direct PPP Termination Configuration

183

(7)

Monitoring Direct PPP Termination

190

(6)

Two-Box Virtual Home Gateway Example

196

(6)

Monitoring the Two-Box VHG Solution

202

(4)

Multi-VRF CE Configuration

206

(3)

Comparison Using the Broadband VPN Framework

209

(6)

Data Confidentiality

210

(1)

Efficient Operation

210

(1)

Efficient Routing

211

(1)

High Availability and Resiliency

212

(1)

Multicast

212

(1)

Quality of Service

213

(1)

Fragmentation

214

(1)

Authentication, Authorization, and Accounting

214

(1)

Service Selection

214

(1)

Support Any IP Addressing Plan

215

(1)

Efficient Address Management

215

(1)

Additional L3 Services

215

(1)

Summary

215

(2)

Wholesale MPLS-VPN Related Service Features

217

(40)

Bindings Again --- Dynamic VRF Allocation

217

(17)

AAA Again --- VRF Name and the AAA Attribute

218

(1)

Direct PPP Termination and Aggregation with AAA

219

(6)

VHG with AAA

225

(2)

DHCP---Life Without AAA

227

(4)

PBR---A Two-Box Solution

231

(1)

Service Selection Gateway---Another Two-Box Solution

232

(1)

VRF Select

233

(1)

Proxy RADIUS and Per-VRF AAA

234

(14)

Per-VRF AAA Configuration

237

(4)

Per-VRF AAA Templates

241

(5)

Per-VRF AAA Accounting

246

(2)

Assigning and Managing Overlapping Addresses

248

(7)

Overlapping Device-Local Pools

248

(1)

On-Demand Address Pools

249

(2)

The Host Route Solution

251

(1)

ODAP and Address Assignments

252

(3)

Summary

255

(2)

Implementing Network-Based Access VPNs Without MPLS

257

(44)

Introduction to Virtual Routers

258

(4)

Implementing Virtual Routing with Cisco IOS

262

(1)

Using Tunnels to Build Network-Based IP VPN

263

(3)

Using GRE for IP VPN

266

(1)

Using IPSec for IP VPN

267

(4)

Routing Between VRF-Lite PEs

271

(27)

Campus Hop-to-Hop Topology

272

(9)

RIP Between VRF-LITE

281

(9)

RIP to BGP

290

(8)

Summary

298

(3)

Case Studies for Using MPLS with Broadband VPNs

301

(22)

Case Study 1: Managed LNS

302

(11)

Service Definitions

304

(1)

L2TP-Based Wholesale Service: Managed LNS

305

(1)

Clients

306

(1)

Circuit Aggregation: LAC

306

(1)

IP Aggregation: LNS

307

(1)

Control Plane: AAA

308

(1)

Network and Service Availability

309

(1)

MPLS-Based Wholesale Service

309

(1)

Clients

310

(1)

PTA PE

310

(1)

ISP PE

311

(1)

Address Allocation and Routing

311

(1)

Control Plane: AAA

312

(1)

QoS and Multicast

312

(1)

Case Study 2: D/V/V Over Ethernet

313

(8)

Service Definitions

313

(1)

Network Design

314

(1)

Clients

314

(1)

Access Layer: Circuit Aggregation

315

(1)

Distribution Layer: IP Aggregation

316

(1)

Adding Open Access

317

(2)

An Alternative Open Access Design

319

(2)

Summary

321

(2)

Future Developments in Broadband Access

323

(18)

Introduction to IPv6

323

(7)

Address Space Size

325

(1)

Addressing

326

(2)

Extensions

328

(1)

Autoconfiguration

329

(1)

Deployment Scenarios of IPv6

330

(3)

Enterprise Deploys IPv6 Internally but Uses an IPv4 VPN Service

330

(1)

A Retail ISP Moves to IPv6

331

(2)

Only the Wholesaler Moves to IPv6

333

(1)

L2 Transport and L2VPN

333

(5)

Pseudo-wires

334

(1)

AToM

335

(1)

L2 Transport over L2TPv3

336

(1)

Applications and Implications for Broadband Access

337

(1)

Summary

338

(3)

Appendix A References and Bibliography

341

(16)

Chapter 1

341

(2)

Chapter 2

343

(2)

Chapter 3

345

(2)

Chapter 4

347

(1)

Chapters 5, 6, 7, and 8

348

(3)

Chapter 9

351

(6)

Index

357

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Building MPLS-Based Broadband Access VPNs

Summary

Table of Contents

Supplemental Materials