Cisco WS-C6506 Software Manual page 1331

Chapter 53 Using Automatic QoS
To avoid conflicting commands, the configuration file includes all the legacy commands that are
included in the macro. The actual macro command does not appear in the configuration file; instead, all
the existing configuration commands that result from executing the macro are included in the
configuration file. For example, when you enter the set qos autoqos command and then enter the write
config command, all existing QoS-related CLI commands display, excluding the actual macro command
itself.
Supported Phones
When you use automatic QoS with the ciscoipphone keyword, some of the QoS configuration requires
phone-specific configuration (trust-ext, ext-cos) which is supported only on the following phones: Cisco
IP Phone 7910, Cisco IP Phone 7940, Cisco IP Phone 7960, and Cisco IP Phone 7935. However, the
ciscoipphone keyword is not exclusive to these models only; any phone can benefit from all the other
QoS settings that are configured on the switch.
Cisco SoftPhone is supported through the ciscoipsoftphone keyword.
CDP Dependencies
To configure the QoS settings and trusted boundary on the Cisco IP Phone, you must enable Cisco
Discovery Protocol (CDP) version 2 or later on the port. If you enable trusted boundary, a syslog warning
message displays if CDP is not enabled or if CDP is running version 1.
You need to enable CDP only for the ciscoipphone QoS configuration; CDP does not affect the other
components of the automatic QoS features. When you use the ciscoipphone keyword with the
port-specific automatic QoS feature, a warning displays if the port does not have CDP enabled. See the
"CDP Warning" section on page
COPS Considerations
You can configure a port for the local policy or the Common Open Policy Service (COPS) policy. This
setting specifies whether the port should get its QoS configuration information from a local
configuration or through a COPS server. If you enable COPS on the port as well as globally enable
COPS, the policy that is specified by the COPS server applies. If you disable COPS and/or the configured
policy is local, the local configuration QoS policy applies.
Automatic QoS affects only the local policy on a port. If you execute automatic QoS on a port that has
a configured policy that is currently set to COPS, the policy reverts to the local policy. The global QoS
policy reverts to the local policy (through the global automatic QoS command), and the port-based policy
reverts to the local policy (through the port-based automatic QoS command). A warning displays if the
policy of a port or global policy has been changed from COPS to local. For more information, see the
"COPS Warning Message" section on page
with the port are not changed.
RSVP Considerations
All global and port-based Resource Reservation Protocol (RSVP)-related settings (including the RSVP
[Designated Subnet Bandwidth Manager] DBSM election settings) are not changed by the automatic
QoS macros.
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53-24.
53-24. Any existing COPS roles that are already associated
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
Using the Automatic QoS Macro on the Switch
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