User Guide

31-34
Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
78-14099-04
Chapter 31 Configuring PFC QoS
Configuring PFC QoS
This example shows how to enable PFC QoS globally:
Router# configure terminal
Router(config)# mls qos
Router(config)# end
Router#
This example shows how to verify the configuration:
Router# show mls qos
QoS is enabled globally
Microflow QoS is enabled globally
QoS global counters:
Total packets: 544393
IP shortcut packets: 1410
Packets dropped by policing: 0
IP packets with TOS changed by policing: 467
IP packets with COS changed by policing: 59998
Non-IP packets with COS changed by policing: 0
Enabling Queueing-Only Mode
To enable queueing-only mode on the switch, perform this task:
When you enable queueing-only mode, the switch does the following:
• Disables marking and policing globally
• Configures all ports to trust Layer 2 CoS
Note The switch applies the port CoS value to untagged ingress traffic and to traffic that is
received through ports that cannot be configured to trust CoS.
This example shows how to enable queueing-only mode:
Router# configure terminal
Router(config)# mls qos queueing-only
Router(config)# end
Router#
Step 2
Router(config)# end
Exits configuration mode.
Step 3
Router# show mls qos
Verifies the configuration.
Command Purpose
Command Purpose
Step 1
Router(config)# mls qos queueing-only
Enables queueing-only mode on the switch.
Router(config)# no mls qos queueing-only
Disables PFC QoS globally on the switch.
Note You cannot disable queueing-only mode
separately.
Step 2
Router(config)# end
Exits configuration mode.
Step 3
Router# show mls qos
Verifies the configuration.