Forum Discussion
On-Premise to Azure communication: DHCP and DNS issues
Hi All, We have an on premise network, consisting for 3 sites (Site-A, Site-B and Site-C) . Site-B hosts all the server infrastructure consisting of our domain controllers (AD DS), DNS and DHCP serv...
Sorry I had my network diagram wrong. I had a chat with the networks team this morning and they said that all sites (Site-A, Site-B and Site-C) are connected to the MPLS network which is then connected to Azure via express route.
the rest of the description remains the name as per my original question.
here is the updated\correct network diagram:
If nothing is working I'd start by validating the route;
- tracert xxx.xxx.xxx.xxx
- check the problematic ones are using the correct DNS servers on connection properties
- also check the required ports are open site to site.
https://support.microsoft.com/en-us/help/179442/how-to-configure-a-firewall-for-domains-and-trusts
https://www.microsoft.com/en-us/download/details.aspx?id=24009