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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
If the port type is 1q4t/2q2t, the configuration is as follows:
set qos acl ip ACL_IP-TRUSTDSCP trust-dscp any
commit qos acl ACL_IP-TRUSTDSCP
set qos acl map ACL_IP-TRUSTDSCP mode/port
set port qos mod/port trust untrusted
If the port type is another port type, the configuration is as follows:
set port qos mod/port trust trust-dscp
Warning and Error Conditions
These sections describe the warnings and error conditions for automatic QoS:
• Out of ACL Names, page 53-23
• Out of TCAM Space, page 53-23
• COPS Warning Message, page 53-24
• CDP Warning, page 53-24
• Out of Policer Names, page 53-24
• QoS Disabled, page 53-25
Out of ACL Names
When creating a QoS ACL for a 1q4t/2q2t type port to fix the trust problem, you may note that the
following QoS ACL names are already in use (where x=1 to 99):
• ACL_IP-PHONESx (for ciscoipphone)
• ACL_IP-SOFTPHONE-m-p-x (for ciscosoftphone)
• ACL_IP-TRUSTCOSx (for trust cos)
• ACL_IP-TRUSTDSCPx (for trust dscp)
This example shows the display when the system is out of ACL names:
Console> (enable) set port qos 4/1 autoqos voip ciscoipphone
ERROR: IP QoS ACL name in use, could not configure QoS ACL.
Rename existing QoS ACL ACL_IP-PHONES.
Autoqos did not complete. Settings remain unchanged.
Console> (enable)
Out of TCAM Space
When configuring the ACLs using the port-based automatic QoS command, it is possible to have a full
TCAM. In this event, an error message displays and the port-based automatic QoS command fails,
leaving all QoS settings unchanged.
This example shows the display when the system is out of TCAM space:
Console> (enable) set port qos 4/1 autoqos voip ciscoipphone
Error: Please remove QoS or security ACLs to make space for new QoS ACL.
Autoqos did not complete. Settings remain unchanged.
Console> (enable)
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