Administrator Guide

• Applying Layer 2 Match Criteria on a Layer 3 Interface
• Applying DSCP and VLAN Match Criteria on a Service Queue
Implementation Information
The Dell Networking QoS implementation complies with IEEE 802.1p User Priority Bits for QoS Indication.
It also implements these Internet Engineering Task Force (IETF) documents:
● RFC 2474, Definition of the Differentiated Services Field (DS Field) in the IPv4 Headers
● 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.
● Setting dot1p Priorities for Incoming Traffic
● Configuring Port-Based Rate Policing
● Configuring Port-Based Rate Shaping
Setting dot1p Priorities for Incoming Traffic
Dell Networking OS places 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 40. dot1p-priority Values and Queue Numbers
dot1p Queue Number
0 1
1 0
2 0
3 1
4 2
5 2
6 3
7 3
● Change the priority of incoming traffic on the interface.
dot1p-priority
Dell#configure terminal
Dell(conf)#interface tengigabitethernet 1/1
Dell(conf-if-te-1/1)#switchport
Dell(conf-if-te-1/1)#dot1p-priority 1
Dell(conf-if-te-1/1)#end
Quality of Service (QoS)
549