Examples of Traffic ClassificationsThe following example shows incorrect traffic classifications.Dell#show running-config policy-map-input!policy-map-input PolicyMapInservice-queue 1 class-map ClassAF1 qos-policy QosPolicyIn-1service-queue 2 class-map ClassAF2 qos-policy QosPolicyIn-2Dell#show running-config class-map!class-map match-any ClassAF1match ip access-group AF1-FB1 set-ip-dscp 10match ip access-group AF1-FB2 set-ip-dscp 12match ip dscp 10 set-ip-dscp 14match ipv6 dscp 20 set-ip-dscp 14!class-map match-all ClassAF2match ip access-group AF2match ip dscp 18Dell#show running-config ACL!ip access-list extended AF1-FB1seq 5 permit ip host 23.64.0.2 anyseq 10 deny ip any any!ip access-list extended AF1-FB2seq 5 permit ip host 23.64.0.3 anyseq 10 deny ip any any!ip access-list extended AF2seq 5 permit ip host 23.64.0.5 anyseq 10 deny ip any anyDell# show cam layer3-qos interface tengigabitethernet 2/4/1Cam Port Dscp Proto Tcp Src Dst SrcIp DstIp DSCP QueueIndex Flag Port Port Marking-----------------------------------------------------------------------20416 1 18 IP 0x0 0 0 23.64.0.5/32 0.0.0.0/0 20 220417 1 18 IP 0x0 0 0 0.0.0.0/0 0.0.0.0/0 - 020418 1 0 IP 0x0 0 0 23.64.0.2/32 0.0.0.0/0 10 120419 1 0 IP 0x0 0 0 0.0.0.0/0 0.0.0.0/0 - 020420 1 0 IP 0x0 0 0 23.64.0.3/32 0.0.0.0/0 12 120421 1 0 IP 0x0 0 0 0.0.0.0/0 0.0.0.0/0 - 020422 1 10 0 0x0 0 0 0.0.0.0/0 0.0.0.0/0 14 124511 1 0 0 0x0 0 0 0.0.0.0/0 0.0.0.0/0 - 0In the previous example, the ClassAF1 does not classify traffic as intended. Traffic matching the first match criteria is classified to Queue 1,but all other traffic is classified to Queue 0.When you remove the explicit “deny any” rule from all three ACLs, the CAM reflects exactly the desired classification.Dot1p to Queue Mapping RequirementThe dot1p to queue mapping on the system is global and this is used to configure the PRIO2COS table configuration. For DSCP based PFCfeature on untagged packets, this mapping must be the same as the default dot1p to queue mapping and should not be changed (as inTABLE 1). If a custom dot1p to queue mapping is present it should be reconfigured to the default dot1p to queue mapping.• Currently Dell Networking OS supports matching only the following TCP flags:• ACK• FIN• SYNQuality of Service (QoS) 703
