Cisco Catalyst 3560-X Series, Software Configuration Manual

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Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-25303-03
Chapter 1 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-config privileged EXEC command. You can compare the show auto qos and the show
running-config command 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 1-37
•
Standard QoS Configuration Guidelines, page 1-39
• Enabling QoS Globally, page 1-42 (required)
•
Enabling VLAN-Based QoS on Physical Ports, page 1-42 (optional)
• Configuring Classification Using Port Trust States, page 1-43 (required
•
Configuring a QoS Policy, page 1-49 (required)
• Configuring DSCP Maps, page 1-73 (optional, unless you need to use the DSCP-to-DSCP-mutation
map or the policed-DSCP map)
•
Configuring Ingress Queue Characteristics, page 1-79 (optional)
• Configuring Egress Queue Characteristics, page 1-83 (optional)