Enterprise QoS Solution Reference Network Design Guide

Contents
CHAPTER 2 Campus QoS Design 2-1
iv
Classification and Marking Principles 1-23
Policing and Markdown Principles 1-23
Queuing and Dropping Principles 1-24
4) Rolling out the QoS Policies 1-27
5) Monitoring the Service-Levels 1-27
How Can I Use QoS Tools to Mitigate DoS/Worm Attacks? 1-27
Scavenger-class QoS DoS/Worm Mitigation Strategy 1-31
Summary 1-31
References 1-33
Standards 1-33
Books 1-33
Cisco Documentation 1-33
QoS Design Overview 2-1
Where is QoS Needed in a Campus? 2-1
DoS/Worm Mitigation Strategies 2-4
Call Signaling Ports 2-5
Access Edge Trust Models 2-6
Trusted Endpoints 2-7
Untrusted Endpoints 2-8
Conditionally-Trusted Endpoints 2-10
AutoQoS—VoIP 2-13
Catalyst 2950—QoS Considerations and Design 2-17
Catalyst 2950—Trusted Endpoint Model 2-17
Configuration 2-17
Catalyst MLS QoS Verification Command 2-18
Catalyst 2950—AutoQoS VoIP Model 2-18
Catalyst 2950—Untrusted PC + SoftPhone with Scavenger-Class QoS Model 2-19
Catalyst 2950—Untrusted Server with Scavenger-Class QoS Model 2-20
Configuration 2-20
Catalyst MLS QoS Verification Commands 2-21
Catalyst 2950—Conditionally-Trusted IP Phone + PC with Scavenger-Class QoS (Basic) Model 2-23
Configuration 2-23
Catalyst MLS QoS Verification Commands 2-23
Catalyst 2950—Conditionally-Trusted IP Phone + PC with Scavenger-Class QoS (Advanced)
Model 2-25
Catalyst 2950—Queuing 2-25
Configuration 2-25
Enterprise QoS Solution Reference Network Design Guide
Version 3.3