Users Guide

Gi 0/6/22 0.0.0.0 08:00:0f:22:7f:83
Gi 0/6/23 0.0.0.0 08:00:0f:23:de:a9
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
power inline auto
no shutdown
Dell#sh run | grep strict-priority
strict-priority unicast 2
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
power inline auto
no shutdown
Dell#sh run | grep strict-priority
strict-priority unicast 2
Power over Ethernet (PoE)
821