Forum Discussion
TimGowen
Jul 06, 2021Copper Contributor
Domain Controller with multiple network interfaces
I have two DCs which have network interfaces on two or three different VLANs. I only need a response on the corporate LAN, but the other VLAN is for VOIP and one server has a third network for VLANed...
- Jul 06, 2021
Sounds good, just don't multi-home your domain controllers.
(please don't forget to mark helpful replies)
Dave Patrick
Jul 06, 2021MVP
Multi-homing a domain controller will always cause no end to grief for active directory domain DNS. Better option is to install the viop software on another instance of windows.
TimGowen
Jul 06, 2021Copper Contributor
Thank you... The other networks are on the DC because it's also doing DHCP. Should I have a separate DHCP server in the VOIP VLAN to provide addressing to the phones?
- Dave PatrickJul 06, 2021MVP
Better option is to use layer 3 routing hardware for this purpose. If you must do it on windows then use another member server for this role.
- TimGowenJul 06, 2021Copper ContributorThanks. We have L3 switches so I'm not sure what has been done. Can you refer me to any best practice?
- Dave PatrickJul 06, 2021MVP
Your router should have a dhcp relay agent option.
Support multiple subnets with one DHCP server by configuring DHCP relay agents | Microsoft Docs
DHCP Subnet Selection Options | Microsoft Docs
(please don't forget to mark helpful replies)