Administrator Guide

Creating VLANs for an Office VoIP Deployment
The phone in the previous figure requires one tagged VLAN for VoIP service and one untagged VLAN for PC data, as shown in the
following example.
You can configure voice signaling on the voice VLAN but some implementations may need an extra tagged VLAN for this traffic.
Example of Adding an Extra Tagged VLAN for Voice Signaling
Dell#show running-config interface configured
!
interface PeGigGE 0/6/1
no ip address
no shutdown
!
interface PeGigGE 0/6/10
no ip address
portmode hybrid
switchport
!
power inline
no shutdown
!
interface Vlan 100
description "Data VLAN"
no ip address
untagged PeGigGE 0/6/10-11,22-23,46-47
shutdown
!
interface Vlan 200
description "Voice VLAN"
no ip address
tagged PeGigGE 0/6/10-11,22-23,46-47
shutdown
!
interface Vlan 300
description "Voice Signaling VLAN"
no ip address
tagged PeGigGE 0/6/10-11,22-23,46-47
shutdown
Configuring LLDP-MED for an Office VoIP Deployment
VoIP deployments may optionally use LLDP-MED.
LLDP-MED advertises VLAN, dot1P, and DSCP configurations on the switch so that you do not need to manually configure every phone
with this information. In the following example, the phone initiates a DHCP request on the advertised voice VLAN, VLAN 200.
Dell#show running-config lldp
protocol lldp
advertise med
advertise med voice 200 6 46
advertise med voice-signaling 300 5 28
no disable
Dell#show lldp neighbors
Loc PortID Rem Chassis Id Rem Port Id
--------------------------------------
Gi 0/6/10 0.0.0.0 001B0CDBA109:P1
Gi 0/6/11 0.0.0.0 001AA2197992:P1
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
724
Power over Ethernet (PoE)