Setup Guide

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.
CONFIGURATION mode
class-map match-all
3. Specify your match criteria.
CLASS MAP mode
[seq sequence number] match {ip | ipv6 | ip-any}
After you create a class-map, Dell EMC Networking OS places you in CLASS MAP mode.
Match-any class maps allow up to five ACLs. Match-all class-maps allow only one ACL.
NOTE: Within a class-map, the match rules are installed in the sequence number order.
4. Link the class-map to a queue.
POLICY MAP mode
service-queue
DellEMC(conf)#ip access-list standard acl1
DellEMC(config-std-nacl)#permit 20.0.0.0/8
DellEMC(config-std-nacl)#exit
DellEMC(conf)#ip access-list standard acl2
DellEMC(config-std-nacl)#permit 20.1.1.0/24 order 0
DellEMC(config-std-nacl)#exit
DellEMC(conf)#class-map match-all cmap1
DellEMC(conf-class-map)#match ip access-group acl1
DellEMC(conf-class-map)#exit
DellEMC(conf)#class-map match-all cmap2
DellEMC(conf-class-map)#match ip access-group acl2
DellEMC(conf-class-map)#exit
DellEMC(conf)#policy-map-input pmap
DellEMC(conf-policy-map-in)#service-queue 3 class-map cmap1
DellEMC(conf-policy-map-in)#service-queue 1 class-map cmap2
DellEMC(conf-policy-map-in)#exit
DellEMC(conf)#interface tengigabitethernet 1/1/1
DellEMC(conf-if-te-1/1/1)#service-policy input pmap
Examples of Creating a Layer 3 IPv6 Class Map
The following example matches the IPv6 traffic with a DSCP value of 40:
DellEMC(conf)# class-map match-all test
DellEMC(conf-class-map)# match ipv6 dscp 40
Quality of Service (QoS)
699