Cisco WS-C6506 User Manual

53-27
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
This message is displayed only once when a problem is detected. When the problem is fixed, the message
can appear again if the configuration is broken again. There is a maximum time of 15 seconds for
detecting a misconfiguration.
Summary of Automatic QoS Features
These sections summarize the automatic QoS features:
• Global Automatic QoS Features (set qos autoqos), page 53-27
• Port-Based Automatic QoS Features, page 53-27
Global Automatic QoS Features (set qos autoqos)
The global automatic QoS feature is summarized as follows:
• Configures all switch-wide QoS parameters to accommodate and properly prioritize all traffic types
that are listed in the “Typical CoS and DSCP Values for Voice and Video Networks” section on
page 53-2.
• Overwrites any old or misconfigured settings that were previously applied.
• Works with the port-based automatic QoS command.
Port-Based Automatic QoS Features
The port-based automatic QoS features are summarized as follows:
• voip ciscoipphone
– Changes the port to port-based QoS.
– For the 1p1q0t/1p3q1t ports, changes all ports to port-based mode.
– Creates a trust-cos QoS ACL for the ports that need it (1q4t/2q2t ports).
– Applies the trust-cos ACL to the port (1q4t/2q2t ports).
– Enables trusted boundary on the port.
– Sets the port trust to trust-cos.
– Supports the ports with or without an auxiliary VLAN.
– Supported only on the 10/100 ports and the 10/100/1000 ports.
– PFC or PFC2 not required (PFC and PFC2 are supported).
• voip ciscosoftphone
– Changes the port to port-based QoS.
– Changes trust to untrusted.
– For the 1p1q0t/1p3q1t ports, changes all ports to port-based mode.
– Disables trusted boundary on the port.
– Applies two rate limiters, one for DSCP 46 and one for DSCP 26 inbound traffic, and trusts only
inbound DSCP 46 and DSCP 26 traffic.
– Results in traffic that is marked down to DSCP 0 for violations of either rate limiter.
– Remarks all other (non-DSCP 26 and 46) inbound traffic to DSCP 0.

Cisco WS-C6506 Specifications

General

Brand	Cisco
Model	WS-C6506
Category	Switch
Language	English