Robot Builders Cookbook or End to End QoS Network Design

Robot Builder's Cookbook: Build and Design Your Own Robots

Author: Owen Bishop

Owen Bishop introduces, through hands-on project work, the mechanics, electronics and programming involved in practical robot design-and-build. The use of the PIC microcontroller throughout provides a painless introduction to programming whilst harnessing the power of a highly popular microcontroller used by students and design engineers worldwide.

This is a book for first-time robot builders, advanced builders wanting to know more about programming robots and students in Further and Higher Education tackling microcontroller-based practical work. They will all find this book a unique and exciting source of projects, ideas and techniques, to be combined into a wide range of fascinating robots.

* Full step-by-step instructions for 5 complete self-build robots
* Introduces key techniques in electronics, programming and construction - for robust robots that work first time
* Illustrations, close-up photographs and a lively, readable text make this a fun and informative guide for novice and expericenced robot builders

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End to End QoS Network Design

Author: Tim Szigeti

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 andthe 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:

	Introduction	xxii
Part I	Introduction to QoS	3
Chapter 1	Introduction to QoS	5
	A Brief Historical Perspective	5
	QoS Evolution	7
	User Network Expectations	9
	Understanding QoS	10
	QoS Models	14
	Introduction to the QoS Toolset	17
	Simplifying QoS	19
	If I Have AutoQoS, Why Should I Be Reading This Book?	26
	The Continuing Evolution of QoS	29
	Summary	29
	Further Reading	30
Chapter 2	QoS Design Overview	33
	QoS Requirements of VoIP	33
	QoS Requirements of Video	39
	QoS Requirements of Data	42
	QoS Requirements of the Control Plane	48
	Scavenger Class	49
	DoS and Worm Mitigation Strategy Through Scavenger Class QoS	50
	Principles of QoS Design	54
	Summary	63
	Further Reading	64
Part II	QoS Toolset	67
Chapter 3	Classification and Marking Tools	69
	Classification Tools	70
	Marking Tools	77
	Summary	98
	Further Reading	99
Chapter 4	Policing and Shaping Tools	103
	Token Bucket Algorithms	105
	Policers	107
	Shapers	118
	Further Reading	128
Chapter 5	Congestion-Management Tools	133
	Understanding Scheduling and Queuing	134
	Legacy Layer 3 Queuing Mechanisms	136
	Currently Recommended Layer 3 Queuing Mechanisms	139
	Layer 2 Queuing Tools	150
	Tx-ring	152
	PAK_priority	153
	Summary	154
	Further Reading	154
Chapter 6	Congestion-Avoidance Tools	159
	Random Early Detection	160
	Weighted Random Early Detection	161
	DSCP-Based Weighted Random Early Detection	162
	Explicit Congestion Notification	163
	Summary	166
	Further Reading	166
Chapter 7	Link-Specific Tools	169
	Header-Compression Techniques	170
	Link Fragmentation and Interleaving	181
	Summary	190
	Further Reading	191
Chapter 8	Bandwidth Reservation	195
	RSVP Overview	196
	MPLS Traffic Engineering	199
	Scalability	200
	RSVP-DiffServ Integration	200
	Endpoints and Proxies	201
	Summary	201
	Further Reading	201
Chapter 9	Call Admission Control (CAC)	205
	CAC Overview	205
	CAC Defined	206
	CAC Tool Categories	207
	CallManager Locations CAC	209
	Gatekeeper CAC	211
	RSVP	212
	Summary	218
	Further Reading	218
Chapter 10	Catalyst QoS Tools	223
	Generic Catalyst QoS Models	224
	Catalyst 2950	231
	Catalyst 3550	235
	Catalyst 2970, 3650, and 3750	242
	Catalyst 4500	247
	Catalyst 6500	252
	Summary	263
	Further Reading	266
Chapter 11	WLAN QoS Tools	269
	QoS for Wireless LANs Versus QoS on Wired LANs	270
	Upstream Versus Downstream QoS	271
	IEEE 802.11 DCF	272
	IEEE 802.11e EDCF	275
	IEEE 802.1D Classes of Service	279
	QoS Operation on Cisco APs	280
	Configuring QoS on Cisco APs	281
	Summary	284
	Further Reading	285
Part III	LAN QoS Design	287
Chapter 12	Campus QoS Design	289
	DoS/Worm-Mitigation Strategies	292
	Call-Signaling TCP/UDP Ports in Use	295
	Access-Edge Trust Models	302
	Catalyst 2950 QoS Considerations and Design	314
	Catalyst 3550 QoS Considerations and Design	325
	Catalyst 2970/3560/3750 QoS Considerations and Design	342
	Catalyst 4500-SupII+/III/IV/V QoS Considerations and Design	357
	Catalyst 6500 QoS Considerations and Design	372
	WAN Aggregator/Branch Router Handoff Considerations	420
	Case Study: Campus QoS Design	422
	Summary	440
	Further Reading	441
Part IV	WAN QoS Design	445
Chapter 13	WAN Aggregator QoS Design	447
	Where Is QoS Needed over the WAN?	447
	WAN Edge QoS Design Considerations	448
	WAN Edge Classification and Provisioning Models	453
	WAN Edge Link-Specific QoS Design	467
	Case Study: WAN Aggregation Router QoS Design	505
	Summary	507
	Further Reading	508
Chapter 14	Branch Router QoS Design	513
	Branch WAN Edge QoS Design	514
	Branch Router LAN Edge QoS Design	517
	Case Study: Branch Router QoS Design	535
	Summary	541
	Further Reading	541
Part V	VPN QoS Design	545
Chapter 15	MPLS VPN QoS Design	547
	Where Is QoS Needed over an MPLS VPN?	548
	Customer Edge QoS Design Considerations	550
	Provider-Edge QoS Considerations	563
	Core QoS Considerations	582
	Case Study: MPLS VPN QoS Design (CE/PE/P Routers)	616
	Summary	632
	Further Reading	632
Chapter 16	IPSec VPN QoS Design	635
	Site-to-Site V3PN QoS Considerations	637
	Site-to-Site V3PN QoS Designs	658
	Headend VPN Edge QoS Options for Site-to-Site V3PNs	665
	Teleworker V3PN QoS Considerations	666
	Teleworker V3PN QoS Designs	682
	Case Study: IPSec VPN QoS Design	686
	Summary	696
	Further Reading	697
Appendix	QoS "At-A-Glance" Summaries	701
	Index	713