Cisco Systems 3750E manual Displaying Auto-QoS Information, Configuring Standard QoS, 36-32

Chapter 36 Configuring QoS

Displaying Auto-QoS Information

Displaying Auto-QoS Information

To display the initial auto-QoS configuration, use the show auto qos [interface [interface-id]] privileged EXEC command. To display any user changes to that configuration, use the show running-configprivileged EXEC command. You can compare the show auto qos and the show running-configcommand output to identify the user-defined QoS settings.

To display information about the QoS configuration that might be affected by auto-QoS, use one of these commands:

•show mls qos

•show mls qos maps cos-dscp

•show mls qos interface [interface-id] [buffers queueing]

•show mls qos maps [cos-dscp cos-input-q cos-output-q dscp-cos dscp-input-q dscp-output-q]

•show mls qos input-queue

•show running-config

For more information about these commands, see the command reference for this release.

Configuring Standard QoS

Before configuring standard QoS, you must have a thorough understanding of these items:

•The types of applications used and the traffic patterns on your network.

•Traffic characteristics and needs of your network. Is the traffic bursty? Do you need to reserve bandwidth for voice and video streams?

•Bandwidth requirements and speed of the network.

•Location of congestion points in the network.

These sections contain this configuration information:

•Default Standard QoS Configuration, page 36-33

•Standard QoS Configuration Guidelines, page 36-35

•Enabling QoS Globally, page 36-37(required)

•Enabling VLAN-Based QoS on Physical Ports, page 36-37(optional)

•Configuring Classification Using Port Trust States, page 36-38(required

•Configuring a QoS Policy, page 36-45(required)

•Configuring DSCP Maps, page 36-63(optional, unless you need to use the DSCP-to-DSCP-mutation map or the policed-DSCP map)

•Configuring Ingress Queue Characteristics, page 36-69(optional)

•Configuring Egress Queue Characteristics, page 36-73(optional)

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
36-32	OL-9775-02