Cisco CATALYST 2960 User Manual

33-36
Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
OL-26520-01
Chapter 33 Configuring QoS
Configuring Auto-QoS
Troubleshooting Auto QoS Commands
To display the QoS commands that are automatically generated when auto-QoS is enabled or disabled,
enter the debug auto qos privileged EXEC command before you enable auto-QoS. For more
information, see the debug autoqos command in the command reference for this release.
To disable auto-QoS on a port, use the no form of the auto qos command interface configuration
command, such as no auto qos voip. Only the auto-QoS-generated interface configuration commands
for this port are removed. If this is the last port on which auto-QoS is enabled and you enter the no auto
Step 3
auto qos voip {cisco-phone |
cisco-softphone | trust}
or
Enable auto-QoS.
The keywords have these meanings:
• cisco-phone—If the port is connected to a Cisco IP Phone, the
QoS labels of incoming packets are trusted only when the
telephone is detected.
• cisco-softphone—The port is connected to device running the
Cisco SoftPhone feature.
• trust—The uplink port is connected to a trusted switch or router,
and the VoIP traffic classification
auto qos video {cts | ip-camera}
or
Enable auto-QoS for a video device.
• cts— A port connected to a Cisco Telepresence system.
• ip-camera—A port connected to an IP camera.
QoS labels of incoming packets are trusted only when the system is
detected.
auto qos classify [police]
or
Enable auto-QoS for classification.
• police—Policing is set up by defining the QoS policy maps and
applying them to ports (port-based QoS).
auto qos trust {cos | dscp} Enable auto-QoS for trusted interfaces.
• cos—Class of service.
• dscp—Differentiated Services Code Point.
Step 4
exit Return to global configuration mode.
Step 5
interface interface-id Specify the switch port identified as connected to a trusted switch or
router, and enter interface configuration mode.
Step 6
auto qos trust Enable auto-QoS on the port, and specify that the port is connected to
a trusted router or switch.
Step 7
end Return to privileged EXEC mode.
Step 8
show auto qos interface interface-id Verify your entries.
This command displays the auto-QoS command on the interface on
which auto-QoS was enabled. You can use the show running-config
privileged EXEC command to display the auto-QoS configuration
and the user modifications.
Command Purpose

Cisco CATALYST 2960 Specifications

General

Manageable	Yes
Stacking	No
Model	Catalyst 2960 Series Switches
Power over Ethernet (PoE)	Available on some models (IEEE 802.3af)
VLANs	255 active VLANs
Features	QoS
Operating Temperature	32 to 113°F (0 to 45°C)
Relative Humidity	10% to 85% non-condensing
Power Consumption	Varies by model (30W to 400W)