• RFC 2475, An Architecture for Differentiated Services
• RFC 2597, Assured Forwarding PHB Group
• RFC 2598, An Expedited Forwarding PHB
You cannot configure port-based and policy-based QoS on the same interface.
Port-Based QoS Configurations
You can configure the following QoS features on an interface.
NOTE: You cannot simultaneously use egress rate shaping and ingress rate policing on the same
virtual local area network (VLAN).
•Setting dot1p Priorities for Incoming Traffic
•Honoring dot1p Priorities on Ingress Traffic
•Configuring Port-Based Rate Policing
•Configuring Port-Based Rate Shaping

Setting dot1p Priorities for Incoming Traffic

The system assigns traffic marked with a priority in a queue based on the following table.
If you set a dot1p priority for a port-channel, all port-channel members are configured with the same
value. You cannot assign a dot1p value to an individual interface in a port-channel.
Table 50. dot1p-priority Values and Queue Numbers
dot1p Queue Number
0 2
1 0
2 1
3 3
4 4
5 5
6 6
7 7
• Change the priority of incoming traffic on the interface.
dot1p-priority
Example of Configuring a dot1p Priority on an Interface
Dell#config
Dell(conf)#interface tengigabitethernet 1/2
Dell(conf-if)#switchport
Dell(conf-if)#dot1p-priority 1
Dell(conf-if)#end
Dell#
Quality of Service (QoS) 719