Administrator Guide

Policy-Based QoS Configurations
Policy-based QoS configurations consist of the components shown in the following example.
Figure 104. Constructing Policy-Based QoS Configurations
Classify Traffic
Class maps differentiate traffic so that you can apply separate quality of service policies to different types of traffic.
For both class maps, Layer 2 and Layer 3, Dell EMC Networking OS matches packets against match criteria in the order that you
configure them.
Creating a Layer 3 Class Map
A Layer 3 class map differentiates ingress packets based on the DSCP value or IP precedence, and characteristics defined in an IP ACL.
You can also use VLAN IDs and VRF IDs to classify the traffic using layer 3 class-maps.
You may specify more than one DSCP and IP precedence value, but only one value must match to trigger a positive match for the class
map.
NOTE:
IPv6 and IP-any class maps cannot match on ACLs or VLANs.
Use step 1 or step 2 to start creating a Layer 3 class map.
1. Create a match-any class map.
CONFIGURATION mode
class-map match-any
2. Create a match-all class map.
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Quality of Service (QoS)