User Guide

31-52
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 disable PFC QoS on the VLAN 5 interface:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# interface vlan 5
Router(config-if)# no mls qos
Router(config-if)# end
Router#
This example shows how to verify the configuration:
Router# show mls qos | begin QoS is disabled
QoS is disabled on the following interfaces:
Vl5
<...Output Truncated...>
Router#
Enabling VLAN-Based PFC QoS on Layer 2 LAN Ports
Note With DFCs installed, Supervisor Engine 2 does not support VLAN-based PFC QoS.
By default, PFC QoS uses policy maps attached to LAN ports. For ports configured as Layer 2 LAN
ports with the switchport keyword, you can configure PFC QoS to use policy maps attached to a VLAN
(see the “Attaching Policy Maps” section on page 31-21). Ports not configured with the switchport
keyword are not associated with a VLAN.
To enable VLAN-based PFC QoS on a Layer 2 LAN port, perform this task:
This example shows how to enable VLAN-based PFC QoS on Fast Ethernet port 5/42:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# interface fastethernet 5/42
Router(config-if)# mls qos vlan-based
Router(config-if)# end
This example shows how to verify the configuration:
Router# show mls qos | begin QoS is vlan-based
QoS is vlan-based on the following interfaces:
Fa5/42
<...Output Truncated...>
Command Purpose
Step 1
Router(config)# interface {{type
1
slot/port} |
{port-channel number}}
1. type = ethernet, fastethernet, gigabitethernet, or tengigabitethernet
Selects the interface to configure.
Step 2
Router(config-if)# mls qos vlan-based
Enables VLAN-based PFC QoS on a Layer 2 LAN port.
Router(config-if)# no mls qos vlan-based
Disables VLAN-based PFC QoS.
Step 3
Router(config-if)# end
Exits configuration mode.
Step 4
Router# show mls qos
Verifies the configuration.