QoS for IP/MPLS networks

✍ Scribed by Gallo, Mark; Zhang, Raymond; Alvarez, Santiago

• Publisher: Cisco Press; Books24x7.com
• Year: 2006
• Tongue: English
• Leaves: 327
• Series: Networking Technology
• Category: Library

✦ Synopsis

This is the comprehensive guide to implementing QoS in multiservice networks using IP/MPLS. It helps you: understand the technology components of implementing QoS in a multiservice network; learn how to configure the MPLS QoS functionality in Cisco IOS-configuration details help you deploy QoS in your network; dsign optimal networks with confidence through knowledge of multiple QoS design options; understand the market potential of service differentiation using QoS. Quality of Service (QoS) plays a key role in the implementation of multiservice and converged networks. Industry efforts to achieve convergence have generated a need for increased levels of traffic differentiation. An array of QoS requirements need to be met to support distinct applications (e.g. voice, video, and data) and multiple network services (e.g. IP, Ethernet, ATM) on a single converged, multiservice network. Therefore, QoS has become an integral part of an multiservice, converged network and service implementation. source of information for the design, deployment, and implementation of QoS-enabled services on an MPLS network using Cisco IOS. Readers will gain knowledge of the technology behind MPLS QoS and related technologies and will learn the different design options available to build a multiservice MPLS network. The book covers in detail the behavior and configuration of the rich MPLS QoS functionality in Cisco IOS. It is a solid reference of working configuration examples, but does not intend to be a command reference on the subject. Santiago Alvarez, CCIE No. 3621, joined Cisco in 1997 as a member of the Technical Assistance Center. Since 2000, he has contributed as Technical Marketing Engineer within the Cisco IOS Technology Group. He focuses on MPLS and QoS technologies. He has been a regular speaker at Networkers and a periodic contributor to Packet magazine. Santiago holds a BS in Computer Science from EAFIT University, an MS in Computer Science from Colorado State University, and an MS in Telecommunications from the University of Colorado at Boulder.

✦ Table of Contents

Cover......Page 1
Contents......Page 11
Foreword......Page 16
Introduction......Page 18
IP QoS Architectures......Page 22
Integrated Services......Page 23
Differentiated Services......Page 28
MPLS Support for IntServ......Page 37
MPLS Support for DiffServ......Page 38
E-LSP......Page 39
L-LSP......Page 41
DiffServ Tunneling Models over MPLS......Page 44
Traffic Marking......Page 50
Traffic Policing......Page 51
Traffic Shaping......Page 54
Congestion Management......Page 56
Active Queue Management......Page 59
Link Fragmentation and Interleaving......Page 61
Header Compression......Page 63
Resource Reservation Protocol......Page 64
Other QoS Signaling Mechanisms......Page 70
References......Page 71
MPLS TE Introduction......Page 76
Link Information Distribution......Page 78
Path Computation......Page 79
TE LSP Signaling......Page 82
DiffServ-Aware Traffic Engineering......Page 83
Class-Types and TE-Classes......Page 85
Bandwidth Constraints......Page 87
Fast Reroute......Page 90
Node Protection......Page 93
Summary......Page 95
References......Page 96
Cisco QoS Behavioral Model......Page 98
Pre-Queuing Component......Page 99
Queuing Component......Page 100
Modular QoS Command-Line Interface......Page 103
Traffic-Management Mechanisms......Page 106
Hierarchical Configurations......Page 148
Percentage-Based Rates......Page 151
Parameter Units......Page 152
Processing of Local Traffic......Page 154
Summary......Page 158
References......Page 159
Basic Operation of MPLS TE......Page 162
Enabling MPLS TE......Page 163
Defining a TE Tunnel Interface......Page 165
Link Information Distribution......Page 167
Path Computation......Page 175
Signaling of TE LSPs......Page 182
Traffic Selection......Page 191
Prestandard DS-TE......Page 194
Class-Types and TE-Class......Page 195
Defining a DS-TE Tunnel Interface......Page 196
Configuring Bandwidth Constraints......Page 198
Verifying DS-TE Link Information Distribution......Page 200
Fast Reroute (FRR)......Page 201
Link and Node Protection......Page 202
Bandwidth Protection......Page 206
Verifying FRR on the Headend......Page 210
Verifying FRR on the PLR......Page 212
References......Page 217
Backbone Performance......Page 220
Performance Requirements for Different Applications......Page 221
Segmentation of Performance Targets......Page 223
Factors Affecting Performance Targets......Page 225
Latency Versus Link Utilization......Page 226
Edge Nodes......Page 229
QoS Design Alternatives......Page 231
Best-Effort Backbone......Page 232
Best-Effort Backbone with MPLS TE......Page 238
DiffServ Backbone......Page 245
DiffServ Backbone with MPLS TE......Page 252
DiffServ Backbone with DiffServ-Aware Traffic Engineering......Page 259
Adding MPLS TE FRR......Page 270
What Design Should I Use?......Page 279
References......Page 280
Appendix A: Command Reference for Cisco MPLS Traffic Engineering and RSVP......Page 284
B......Page 302
C......Page 303
D......Page 305
F......Page 306
I......Page 307
J–L......Page 308
M......Page 309
N......Page 311
P......Page 312
Q......Page 313
R......Page 314
S......Page 315
T......Page 316
W......Page 318