Cisco Catalyst 3750 Software Configuration Manual page 516

Configuring Auto-QoS
Beginning in privileged EXEC mode, follow these steps to configure the switch at the edge of the QoS
domain to prioritize the VoIP traffic over all other traffic:
Command
Step 1 debug autoqos
Step 2 configure terminal
Step 3
cdp enable
Step 4
interface interface-id
Step 5
auto qos voip cisco-phone
Step 6 exit
Step 7
Step 8
auto qos voip cisco-phone
Step 9
exit
Step 10 interface interface-id
Step 11 auto qos voip trust
Step 12 end
Step 13
show auto qos
Step 14
copy running-config
startup-config
Catalyst 3750 Metro Switch Software Configuration Guide
26-36
Purpose
Enable debugging for auto-QoS. When debugging is enabled, the
switch displays the QoS configuration that is automatically
generated when auto-QoS is enabled.
Enter global configuration mode.
Enable CDP globally. By default, it is enabled.
Specify the switch port connected to the Cisco IP phone, and enter
interface configuration mode.
Enable auto-QoS on the port, and specify that the port is connected
to a Cisco IP phone.
The QoS labels of inbound packets are trusted only when the Cisco
IP phone is detected.
Return to global configuration mode.
Repeat Steps 4 to 6 for as many ports as are connected to the Cisco
IP phone.
Enable auto-QoS on the port, and specify that the port is connected
to a Cisco IP phone.
Return to global configuration mode.
Specify the port identified as connected to a trusted switch or
router. See Figure 26-12. Enter interface configuration mode.
Enable auto-QoS on the port, and specify that the port is connected
to a trusted router or switch.
Return to privileged EXEC mode.
Verify your entries.
This command displays the auto-QoS configuration that is initially
applied; it does not display any user changes to the configuration
that might be in effect.
For information about the QoS configuration that might be
affected by auto-QoS, see the "Displaying Auto-QoS Information"
section on page 26-12.
Save the auto qos voip interface configuration commands and the
generated auto-QoS configuration in the configuration file.
Chapter 26 Configuring QoS
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