Administrator Guide

service-queue 2 class-map class_dscp_40
service-queue 3 class-map class_dscp_50
Applying Layer 2 Match Criteria on a Layer 3
Interface
To process Layer 3 packets that contain a dot1p (IEEE 802.1p) VLAN Layer 2 header, configure VLAN tags on a Layer 3 port interface
which is configured with an IP address but has no VLAN associated with it. You can also configure a VLAN sub-interface on the port
interface and apply a policy map that classifies packets using the dot1p VLAN ID.
To apply an input policy map with Layer 2 match criteria to a Layer 3 port interface, use the service-policy input policy-name
layer 2 command in Interface configuration mode.
To apply a Layer 2 policy on a Layer 3 interface:
1. Configure an interface with an IP address or a VLAN sub-interface
CONFIGURATION mode
DellEMC(conf)# interface fo 1/49/1
INTERFACE mode
DellEMC(conf-if-fo-1/49/1)# ip address 90.1.1.1/16
2. Configure a Layer 2 QoS policy with Layer 2 (Dot1p or source MAC-based) match criteria.
CONFIGURATION mode
DellEMC(conf)# policy-map-input l2p layer2
3. Apply the Layer 2 policy on a Layer 3 interface.
INTERFACE mode
DellEMC(conf-if-fo-1/49/1)# service-policy input l2p layer2
Applying DSCP and VLAN Match Criteria on a
Service Queue
You can configure Layer 3 class maps which contain both a Layer 3 Differentiated Services Code Point (DSCP) and IP VLAN IDs as match
criteria to filter incoming packets on a service queue on the switch.
To configure a Layer 3 class map to classify traffic according to both an IP VLAN ID and DSCP value, use the match ip vlan vlan-
id command in class-map input configuration mode. You can include the class map in a policy map, and apply the class and policy map to
a service queue using the service-queue command. In this way, the system applies the match criteria in a class map according to
queue priority (queue numbers closer to 0 have a lower priority).
To configure IP VLAN and DSCP match criteria in a Layer 3 class map, and apply the class and policy maps to a service queue:
1. Create a match-any or a match-all Layer 3 class map, depending on whether you want the packets to meet all or any of the match
criteria. By default, a Layer 3 class map is created if you do not enter the layer2 option with the class-map command. When you
create a class map, you enter the class-map configuration mode.
CONFIGURATION mode
Dell(conf)#class-map match-all pp_classmap
2. Configure a DSCP value as a match criterion.
CLASS-MAP mode
Dell(conf-class-map)#match ipdscp 5
3. Configure an IP VLAN ID as a match criterion.
CLASS-MAP mode
Dell(conf-class-map)#match ip vlan 5
4. Create a QoS input policy.
CONFIGURATION mode
Dell(conf)#qos-policy-input pp_qospolicy
5. Configure the DSCP value to be set on matched packets.
QOS-POLICY-IN mode
Quality of Service (QoS)
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