53-4
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 53 Using Automatic QoS
Using the Automatic QoS Macro on the Switch
• Warning and Error Conditions, page 53-23
• syslog Additions, page 53-25
• Other Relevant syslog Messages, page 53-26
• Summary of Automatic QoS Features, page 53-27
Automatic QoS Overview
The automatic QoS macro is divided into these two separate components:
• Global automatic QoS command (set qos auto)—Deals with all switch-wide related QoS settings
that are not specific to any given interface. These settings include CoS-to-queue maps,
CoS-to-DSCP maps, and WRED settings for specific port types and global mappings.
• Port-specific automatic QoS command (set port qos mod/port autoqos)—Configures all inbound
QoS parameters for a particular port to reflect the desired traffic type (voice, video, and
applications).
Tip To ensure that automatic QoS works properly, you should execute both components.
Automatic QoS Configuration Guidelines and Restrictions
These sections provide the configuration guidelines and restrictions for automatic QoS:
• Configuration Files, page 53-4
• Supported Phones, page 53-5
• CDP Dependencies, page 53-5
• COPS Considerations, page 53-5
• RSVP Considerations, page 53-5
• Current QoS Default Settings, page 53-6
• EtherChannel Considerations, page 53-6
• Video Traffic Considerations, page 53-6
• Clearing the QoS Configuration, page 53-6
• PFC/PFC2 Support, page 53-6
• 1p1q0t/1p3q1t Port Support, page 53-6
Configuration Files
Creating the commands (macros) that implement other commands can lead to conflicting commands. For
example, if you configure a CoS-to-queue map with a certain setting and then enable the automatic QoS
macro feature, the macro that you enabled will alter the CoS-to-queue map.
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