Enterprise QoS Solution Reference Network Design Guide

How is QoS Optimally Deployed within the Enterprise?
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Enterprise QoS Solution Reference Network Design Guide
Chapter 1 Quality of Service Design Overview
The queuing policies can be expanded on a platform that supports a full 11-class QoS Baseline queuing
model in such a way as to provide consistent servicing to Realtime, Best Effort and Scavenger traffic.
For example, on a platform such as a Cisco IOS router that supports 11 queues with DSCP-based
admission, an advanced queuing policy could be as follows:
Voice (18%)
Interactive Video (15%)
Internetwork-Control
Call-Signaling
Mission-Critical Data
Transactional Data
Network Management
Streaming Video
Best Effort Data (25%)
Bulk Data (4%)
Scavenger (1%)
The inter-relationship between these compatible queuing models is shown in Figure 1-8.
Figure 1-8 Compatible Four-Class and Eleven-Class Queuing Models following Realtime, Best Effort
and Scavenger Queuing Rules
Scavenger 1%
Best Effort 25%
Bulk 4%
Streaming-Video
Network Management
Best Effort > 25%
Scavenger/
Bulk < 5%
Critical Data
Realtime < 33%
Transactional Data Mission-Critical Data
Voice 18%
Call-Signaling
Interactive- Video 15%
Internetwork-Control
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