Book description
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.
Table of contents
- Copyright
- About the Authors
- Acknowledgments
- Icons Used in This Book
- Command Syntax Conventions
- Introduction
-
I. Introduction to QoS
- 1. Introduction to QoS
- 2. QoS Design Overview
-
II. QoS Toolset
- 3. Classification and Marking Tools
- 4. Policing and Shaping Tools
- 5. Congestion-Management Tools
- 6. Congestion-Avoidance Tools
-
7. Link-Specific Tools
- Header-Compression Techniques
- Link Fragmentation and Interleaving
- Summary
- Further Reading
- 8. Bandwidth Reservation
- 9. Call Admission Control (CAC)
- 10. Catalyst QoS Tools
- 11. WLAN QoS Tools
-
III. LAN QoS Design
-
12. Campus QoS Design
- DoS/Worm-Mitigation Strategies
- Call-Signaling TCP/UDP Ports in Use
- Access-Edge Trust Models
- Catalyst 2950 QoS Considerations and Design
- Catalyst 3550 QoS Considerations and Design
-
Catalyst 2970/3560/3750 QoS Considerations and Design
- Catalyst 2970/3560/3750: Trusted Endpoint Model
- Catalyst 2970/3560/3750: Untrusted PC with SoftPhone Model
- Catalyst 2970/3560/3750: Untrusted Server Model
- Catalyst 2970/3560/3750: Conditionally Trusted IP Phone + PC: Basic Model
- Catalyst 2970/3560/3750: Conditionally Trusted IP Phone + PC: Advanced Model
- Catalyst 2970/3560/3750: Queuing and Dropping
- Catalyst 4500-SupII+/III/IV/V QoS Considerations and Design
-
Catalyst 6500 QoS Considerations and Design
- Catalyst 6500: CatOS Defaults and Recommendations
- Catalyst 6500: Trusted Endpoint Model
- Catalyst 6500: Untrusted PC with SoftPhone Model
- Catalyst 6500: Untrusted Server Model
- Catalyst 6500: Conditionally Trusted IP Phone + PC: Basic Model
- Catalyst 6500: Conditionally Trusted IP Phone + PC: Advanced Model
-
Catalyst 6500: Queuing and Dropping
- Catalyst 6500: 2Q2T Queuing and Dropping
- Catalyst 6500 CatOS QoS Verification Command: show qos info config 2q2t tx
- Catalyst 6500 CatOS QoS Verification Command: show qos info runtime
- Catalyst 6500 IOS QoS Verification Command: show queueing interface
- Catalyst 6500: 1P2Q1T Queuing and Dropping
- Catalyst 6500: 1P2Q2T Queuing and Dropping
- Catalyst 6500: 1P3Q1T Queuing and Dropping
- Catalyst 6500: 1P3Q8T Queuing and Dropping
- Catalyst 6500: 1P7Q8T Queuing and Dropping
- Catalyst 6500: PFC3 Distribution-Layer (Cisco IOS) Per-User Microflow Policing
- WAN Aggregator/Branch Router Handoff Considerations
- Case Study: Campus QoS Design
- Summary
- Further Reading
-
12. Campus QoS Design
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IV. WAN QoS Design
-
13. WAN Aggregator QoS Design
- Where Is QoS Needed over the WAN?
- WAN Edge QoS Design Considerations
- WAN Edge Classification and Provisioning Models
-
WAN Edge Link-Specific QoS Design
- Leased Lines
- Frame Relay
- ATM
- ATM-to-Frame Relay Service Interworking
- ISDN
- Case Study: WAN Aggregation Router QoS Design
- Summary
- Further Reading
- 14. Branch Router QoS Design
-
13. WAN Aggregator QoS Design
-
V. VPN QoS Design
-
15. MPLS VPN QoS Design
- Where Is QoS Needed over an MPLS VPN?
- Customer Edge QoS Design Considerations
- Provider-Edge QoS Considerations
-
Core QoS Considerations
- Aggregate Bandwidth Overprovisioning
- DiffServ in the Backbone
-
MPLS Traffic Engineering
- Basic MPLS TE
-
MPLS Per-VPN TE
- Verification Command: show ip rsvp interface
- Verification Command: show ip rsvp neighbor
- Verification Command: show mpls interface
- Verification Command: show mpls traffic-eng tunnels summary
- Verification Command: show mpls traffic-eng tunnels
- Verification Command: ping vrf with show interface tunnel
- MPLS DS-TE
- Case Study: MPLS VPN QoS Design (CE/PE/P Routers)
- Summary
- Further Reading
-
16. IPSec VPN QoS Design
- Site-to-Site V3PN QoS Considerations
- Site-to-Site V3PN QoS Designs
- Headend VPN Edge QoS Options for Site-to-Site V3PNs
- Teleworker V3PN QoS Considerations
- Teleworker V3PN QoS Designs
- Case Study: IPSec VPN QoS Design
- Summary
- Further Reading
- QoS “At-A-Glance” Summaries
-
15. MPLS VPN QoS Design
Product information
- Title: End-to-End QoS Network Design
- Author(s):
- Release date: November 2004
- Publisher(s): Cisco Press
- ISBN: 9781587051760
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