Cisco Catalyst 3550 series Software Configuration Manual page 610

Auto-QoS Configuration Example
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 fastethernet0/3
Step 5 auto qos voip cisco-phone
Step 6 interface fastethernet0/5
Step 7
auto qos voip cisco-phone
Step 8
interface fastethernet0/7
Step 9
auto qos voip cisco-phone
Step 10 interface gigabitethernet0/1
Step 11
auto qos voip trust
Step 12
end
Step 13
show auto qos
Step 14
copy running-config
startup-config
Catalyst 3550 Multilayer Switch Software Configuration Guide
29-24
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.
Enter interface configuration mode.
Enable auto-QoS on the interface, and specify that the interface
is connected to a Cisco IP phone.
The QoS labels of incoming packets are trusted only when the
Cisco IP phone is detected.
Enter interface configuration mode.
Enable auto-QoS on the interface, and specify that the interface
is connected to a Cisco IP phone.
Enter interface configuration mode.
Enable auto-QoS on the interface, and specify that the interface
is connected to a Cisco IP phone.
Enter interface configuration mode.
Enable auto-QoS on the interface, and specify that the interface
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 29 Configuring QoS
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