Enterprise QoS Solution Reference Network Design Guide

Chapter 2 Campus QoS Design
Version 3.3
(bps) (bps) (packets)
1 N/A disabled N/A 240
2 N/A disabled N/A 240
3 N/A 30000000 high 240
4 N/A disabled N/A 240
CAT4500-SUP4#
CAT4500-SUP4#show qos interface GigabitEthernet1/1
QoS is enabled globally
Port QoS is enabled
Administrative Port Trust State: 'dscp'
Operational Port Trust State: 'dscp'
Trust device: none
Default DSCP: 0 Default CoS: 0
Appliance trust: none
Tx-Queue Bandwidth ShapeRate Priority QueueSize
(bps) (bps) (packets)
1 50000000 disabled N/A 1920
2 250000000 disabled N/A 1920
3 300000000 300000000 high 1920
4 700000000 disabled N/A 1920
CAT4500-SUP4#
Catalyst 6500 PFC2/PFC3—QoS Considerations and Design
Catalyst 6500 PFC2/PFC3—QoS Considerations and Design
This section includes the following topics:
Catalyst 6500 QoS Configuration and Design Overview
Catalyst 6500—CatOS Defaults and Recommendations
Catalyst 6500—Trusted Endpoint Model
Catalyst 6500 Auto QoS VoIP Model
Catalyst 6500—Untrusted PC + SoftPhone with Scavenger-Class QoS Model
Catalyst 6500—Untrusted Server with Scavenger-Class QoS Model
Catalyst 6500—Conditionally-Trusted IP Phone + PC with Scavenger-Class QoS (Basic) Model
Catalyst 6500—Conditionally-Trusted IP Phone + PC with Scavenger-Class QoS (Advanced)
Model
Catalyst 6500—Queuing and Dropping
Catalyst 6500—PFC3 Distribution-Layer (IOS) Per-User Microflow Policing
Catalyst 6500 QoS Configuration and Design Overview
The Catalyst 6500 is the undisputed flagship of the Cisco family of LAN switches, as it is the most
powerful and flexible switching platform. As such, it can be found in all three layers of a campus
network (Access, Distribution, and Core).
When configured as an access layer switch, the recommended software for the Supervisor is CatOS;
when configured as a distribution or core layer switch, the recommended software is Cisco IOS.
Furthermore, at the time of writing, Catalyst 6500 IOS does not yet support AutoQoS nor the
conditional-trust feature, therefore only CatOS examples of these models are given. However, both
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