End-to-end Qos Network Design

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Cisco Press, 2005 - Computers - 734 pages
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Best-practice QoS designs for protecting voice, video, and critical data while mitigating network denial-of-service attacks

  • Understand the service-level requirements of voice, video, and data applications
  • Examine strategic QoS best practices, including Scavenger-class QoS tactics for DoS/worm mitigation
  • Learn about QoS tools and the various interdependencies and caveats of these tools that can impact design considerations
  • Learn how to protect voice, video, and data traffic using various QoS mechanisms
  • Evaluate design recommendations for protecting voice, video, and multiple classes of data while mitigating DoS/worm attacks for the following network infrastructure architectures: campus LAN, private WAN, MPLS VPN, and IPSec VPN

Quality of Service (QoS) has already proven itself as the enabling technology for the convergence of voice, video, and data networks. As business needs evolve, so do the demands for QoS. The need to protect critical applications via QoS mechanisms in business networks has escalated over the past few years, primarily due to the increased frequency and sophistication of denial-of-service (DoS) and worm attacks.

End-to-End QoS Network Design is a detailed handbook for planning and deploying QoS solutions to address current business needs. This book goes beyond discussing available QoS technologies and considers detailed design examples that illustrate where, when, and how to deploy various QoS features to provide validated and tested solutions for voice, video, and critical data over the LAN, WAN, and VPN.

The book starts with a brief background of network infrastructure evolution and the subsequent need for QoS. It then goes on to cover the various QoS features and tools currently available and comments on their evolution and direction. The QoS requirements of voice, interactive and streaming video, and multiple classes of data applications are presented, along with an overview of the nature and effects of various types of DoS and worm attacks. QoS best-practice design principles are introduced to show how QoS mechanisms can be strategically deployed end-to-end to address application requirements while mitigating network attacks. The next section focuses on how these strategic design principles are applied to campus LAN QoS design. Considerations and detailed design recommendations specific to the access, distribution, and core layers of an enterprise campus network are presented. Private WAN QoS design is discussed in the following section, where WAN-specific considerations and detailed QoS designs are presented for leased-lines, Frame Relay, ATM, ATM-to-FR Service Interworking, and ISDN networks. Branch-specific designs include Cisco® SAFE recommendations for using Network-Based Application Recognition (NBAR) for known-worm identification and policing. The final section covers Layer 3 VPN QoS design-for both MPLS and IPSec VPNs. As businesses are migrating to VPNs to meet their wide-area networking needs at lower costs, considerations specific to these topologies are required to be reflected in their customer-edge QoS designs. MPLS VPN QoS design is examined from both the enterprise and service provider's perspectives. Additionally, IPSec VPN QoS designs cover site-to-site and teleworker contexts.

Whether you are looking for an introduction to QoS principles and practices or a QoS planning and deployment guide, this book provides you with the expert advice you need to design and implement comprehensive QoS solutions.

 

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Contents

Introduction to QoS
3
QoS Models
14
The Continuing Evolution of QoS
29
QoS Design Overview
33
QoS Requirements of Video
39
QoS Requirements of the Control Plane
48
Principles of QoS Design
54
Summary
63
Catalyst 29703650 and 3750
242
WLAN QoS Tools
269
lleEDCF
275
Configuring QoS on Cisco APs
281
LAN QoS Design
287
QoS Considerations and Design
325
Catalyst 297035603750 QoS Considerations and Design
342
Catalyst 4500SupII+IIIIVV QoS Considerations and Design
357

QoS Toolset
67
Classification and Marking Tools
69
Summary
98
Policing and Shaping Tools
103
Shapers
118
Further Reading
128
Chapters CongestionManagement Tools
133
Txring
152
Chapters CongestionAvoidance Tools
159
LinkSpecific Tools
169
Link Fragmentation and Interleaving
181
Further Reading
191
Chapter8 Bandwidth Reservation
195
MPLS Traffic Engineering
199
Call Admission Control CAC
205
Gatekeeper CAC
211
Summary
218
Catalyst QoS Tools
223
Catalyst 2950
231
QoS Considerations and Design
372
WAN AggregatorBranch Router Handoff Considerations
420
Summary
440
WAN QoS Design
445
WAN Edge LinkSpecific QoS Design
467
WAN Aggregation Router QoS Design
505
Branch Router QoS Design
513
Branch Router QoS Design
535
Summary
541
VPN QoS Design
545
Core QoS Considerations
582
MPLS VPN QoS Design CEPEP Routers
616
Summary
632
IPSec VPN QoS Design
635
Teleworker V3PN QoS Designs
682
Summary
696
Appendix QoS AtAGlance Summaries
701
Index
713
Copyright

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About the author (2005)

Tim Szigeti, CCIE No. 9794, is part of the Technology Solutions Engineering team within the Cisco Central Technical Marketing organization, where he helps define and drive strategic QoS solutions across Cisco technology groups while working with many Fortune 500 companies (both enterprise and service providers) providing QoS design expertise.

Christina Hattingh is a member of the technical staff in the Multiservice Customer Edge Business Unit of Cisco Systems. In this role, she trains Cisco sales staff and advises customers on voice network deployment and design.

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