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
Configuring Standard QoS
Enabling QoS Globally
By default, QoS is disabled on the switch. To enable IPv6 QoS on the switch, you must first configure a
dual-ipv4-and ipv6 SDM template and reload the switch. This template enables both IPv4 and IPv6 QoS
configuration.
Beginning in privileged EXEC mode, follow these steps to enable QoS. This procedure is required.
To disable QoS, use the no mls qos global configuration command.
Enabling VLAN-Based QoS on Physical Ports
By default, VLAN-based QoS is disabled on all physical switch ports. The switch applies QoS, including
class maps and policy maps, only on a physical-port basis. In Cisco IOS Release 12.2(25)SE or later,
yYou can enable VLAN-based QoS on a switch port.
Beginning in privileged EXEC mode, follow these steps to enable VLAN-based QoS. This procedure is
required on physical ports that are specified in the interface level of a hierarchical policy map on an SVI.
Use the no mls qos vlan-based interface configuration command to disable VLAN-based QoS on the
physical port.
Command Purpose
Step 1 configure terminal Enter global configuration mode.
Step 2 mls qos Enable QoS globally.
QoS runs with the default settings described in the “Default Standard QoS
Configuration” section on page 1-37 , the “Queueing and Scheduling on
Ingress Queues” section on page 1-16 , and the “Queueing and Scheduling
on Egress Queues” section on page 1-19 .
Step 3 end Return to privileged EXEC mode.
Step 4 show mls qos Verify the QoS configuration.
Step 5 copy running-config
startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Specify the physical port, and enter interface configuration mode.
Step 3 mls qos vlan-based Enable VLAN-based QoS on the port.
Step 4 end Return to privileged EXEC mode.
Step 5
show mls qos interface interface-id Verify if VLAN-based QoS is enabled on the physical port.
Step 6
copy running-config startup-config (Optional) Save your entries in the configuration file.