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Enterprise QoS Solution Reference Network Design Guide

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Version 3.3<br />

Catalyst 6500 CatOS <strong>QoS</strong> Verification Commands 2-95<br />

Catalyst 6500—Conditionally-Trusted IP Phone + PC with Scavenger-Class <strong>QoS</strong> (Advanced)<br />

Model 2-95<br />

Configuration 2-96<br />

Catalyst 6500 CatOS <strong>QoS</strong> Verification Commands 2-98<br />

Catalyst 6500—Queuing and Dropping 2-99<br />

Catalyst 6500 Queuing and Dropping Overview 2-99<br />

Catalyst 6500 Transmit Queuing and Dropping Linecard Options 2-99<br />

Catalyst 6500—2Q2T Queuing and Dropping 2-102<br />

Catalyst 6500—1P2Q1T Queuing and Dropping 2-107<br />

Catalyst 6500—1P2Q2T Queuing and Dropping 2-109<br />

Catalyst 6500—1P3Q1T Queuing and Dropping 2-112<br />

Catalyst 6500—1P3Q8T Queuing and Dropping 2-114<br />

Catalyst 6500—1P7Q8T Queuing and Dropping 2-117<br />

Catalyst 6500—PFC3 Distribution-Layer (IOS) Per-User Microflow Policing 2-121<br />

WAN Aggregator/Branch Router Handoff Considerations 2-122<br />

Summary 2-124<br />

<strong>Reference</strong>s 2-125<br />

Standards 2-125<br />

Books 2-125<br />

Cisco Catalyst Documentation 2-125<br />

CHAPTER 3 WAN Aggregator <strong>QoS</strong> <strong>Design</strong> 3-1<br />

Where Is <strong>QoS</strong> Needed over the WAN? 3-1<br />

WAN Edge <strong>QoS</strong> <strong>Design</strong> Considerations 3-2<br />

Software <strong>QoS</strong> 3-2<br />

Bandwidth Provisioning for Best-Effort Traffic 3-2<br />

Bandwidth Provisioning for Real-Time Traffic 3-3<br />

Serialization 3-3<br />

IP RTP Header Compression 3-4<br />

Tx-ring Tuning 3-4<br />

PAK_priority 3-5<br />

Link Speeds 3-5<br />

Distributed Platform <strong>QoS</strong> and Consistent <strong>QoS</strong> Behavior 3-6<br />

WAN Edge Classification and Provisioning Models 3-6<br />

Slow/Medium Link-Speed <strong>QoS</strong> Class Models 3-6<br />

Three-Class (Voice and Data) Model 3-6<br />

Verification Command: show policy 3-8<br />

High Link Speed <strong>QoS</strong> Class Models 3-10<br />

<strong>Enterprise</strong> <strong>QoS</strong> <strong>Solution</strong> <strong>Reference</strong> <strong>Network</strong> <strong>Design</strong> <strong>Guide</strong><br />

Contents<br />

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