Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 885

Configuring QoS for an Office VoIP Deployment There are several ways you can use quality of service (QoS) to map ingress phone and PC traffic to give them each a different quality of service. Honoring the Incoming DSCP Value If you know that traffic originating from the phone is tagged with the DSCP value of 46 (EF), you can make the associated queue a strict-priority queue, as shown in the following example. Dell#show run policy-map-input ! policy-map-input HonorDSCP trust diffserv Dell#sh run int gigabitethernet 0/6/11 ! interface GigabitEthernet 0/6/11 description "IP Phone X" no ip address portmode hybrid switchport service-policy input HonorDSCP service-policy output Strict_Q power inline no shutdown ! Dell#show run policy-map-output ! policy-map-output Strict_Q service-queue 5 qos-policy VoIP_Q Dell#show run qos-policy-output ! qos-policy-output VoIP_Q scheduler strict Honoring the Incoming dot1p Value If you know that traffic originating from the phone is tagged with a dot1p value of 5, you can make the associated queue a strict-priority queue, as shown in the following example. Dell#show run int gi 0/6/10 ! interface GigabitEthernet 0/6/10 description "IP Phone X" no ip address portmode hybrid switchport service-class dynamic dot1p service-policy output Strict_Q power inline no shutdown ! Power over Ethernet (PoE) 885