Auto-Qos Enhanced Considerations; Enabling Auto-Qos - Cisco Catalyst 2975 Software Configuration Manual

Chapter 33 Configuring QoS
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Auto-QoS Enhanced Considerations

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Enabling Auto-QoS

For optimum QoS performance, enable auto-QoS on all the devices in your network.
Beginning in privileged EXEC mode, follow these steps to enable auto-QoS devices within a QoS
domain:
Command
Step 1 configure terminal
Step 2 interface interface-id
Step 3 auto qos voip {cisco-phone |
cisco-softphone | trust}
or
auto qos video {cts | ip-camera}
or
auto qos classify [police]
or
OL-19720-02
When enabling auto-QoS with a Cisco IP Phone on a routed port, you must assign a static IP address
to the IP phone.
This release supports only Cisco IP SoftPhone Version 1.3(3) or later.
Connected devices must use Cisco Call Manager Version 4 or later.
The auto qos srnd4 global configuration command is generated as a result of enhanced auto-QoS
configuration.
If the legacy auto qos voip commands are executed on the switch and the mls qos command is
disabled, the enhanced auto-QoS configuration is generated. Otherwise, legacy auto-QoS commands
are executed.
Purpose
Enter global configuration mode.
Specify the port that is connected to a video device or the uplink port
that is connected to another trusted switch or router in the network
interior, and enter interface configuration mode.
Enable auto-QoS.
The keywords have these meanings:
cisco-phone—If the port is connected to a Cisco IP Phone, the
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QoS labels of incoming packets are trusted only when the
telephone is detected.
cisco-softphone—The port is connected to device running the
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Cisco SoftPhone feature.
trust—The uplink port is connected to a trusted switch or router,
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and the VoIP traffic classification
Enable auto-QoS for a video device.
cts— A port connected to a Cisco Telepresence system.
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ip-camera—A port connected to an IP camera.
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QoS labels of incoming packets are trusted only when the system is
detected.
Enable auto-QoS for classification.
police—Policing is set up by defining the QoS policy maps and
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applying them to ports (port-based QoS).
Catalyst 2975 Switch Software Configuration Guide
Configuring Auto-QoS
33-31