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David WhyteFlag for United Kingdom of Great Britain and Northern Ireland

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2nd VLAN and DHCP Range for VOIP handset required

I have a network which currently has the voice and data all on the same network space (192.168.27.1/24). The DHCP server is a Draytek 3900 Series Firewall and the network switch is Catalyst 2960 L series.

How do I setup the 2nd VLAN for voice and get the firewall to issue a different IP (192.168.28.0/24) for the phones whilst leaving the PC's on the original network.

Thanks
Sycamore IT
Avatar of Soulja
Soulja
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Firstly, you need to determine if your Draytek will support tagging multiple vlans on a single port that will be connecting to the 2960. I assume this 2960 is connecting directly to the Draytek?

If it cannot support tagging, you will need to connect two interfaces on the 2960 to the Draytek and assign a vlan on each Draytek port for the perspective vlan connecting to it.
According to the specs the Draytek 3900 does support 802.1q VLANs:
https://www.draytek.co.uk/products/business/vigor-3900

See the manual from page 118, you'll need to create a 'LAN profile' for each VLAN, so likely one more:
https://www.draytek.co.uk/support/downloads/vigor-3900/send/292-vigor-3900/1587-ug-v3900-v28

On the switch side, standard Cisco IOS config:
vlan 2
 name voip
!
interface fastethernet0/1
 description User port data vlan 1 voice vlan 2
 switchport mode access
 switchport access vlan 1
 switchport voice vlan 2
!
...more interfaces...
!
switchport Gigabitethernet0/1
 description Trunk port to firewall with all vlans
 switchport mode trunk
!

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