Change LAN IP addresses

20 pts.
Tags:
Active Directory
DHCP
IP address
LAN
I have a Windows 2008 Server with Active Directory, DHCP, SQL Server installed. It has a static IP of 211.xx.xx.xx there are about 20 devices using the DHCP service to get IP addresses. What would be required to change the IP structure from the 211.xx.xx.xx to a private range like 192.xx.xx.xx?

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I think the first thing to do is to find all the services that really on the DC static address and should be done during out of office. change to the private IP address refresh and check your event viewer to see what errors you are getting.

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  • Subhendu Sen
    Don't panic. You will be okay when you will do the task. It is common problem that the hostname can sometimes get into trouble. It is recommended that, you will at least have to configure your clients with the new DNS server address, if any. Hopefully you either use DHCP which will distribute this change for you else a lot of clients to manually configure. It is better to run Dcdiag command & make sure the DC passes all the tests before doing the job. If any problems are identified, they should be resolved before proceeding any further. For more help, please link here an Microsoft support: https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc794931(v=ws.10)

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  • TheRealRaven
    First problem to resolve is why does it have the 211.xx.xx.xx static address? That would normally indicate that routing to the server from an external network is required. If so, then changing the address to a 192.168.xx.xx range is more complicated.
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  • TheRealRaven
    Do you want to change the server's external address to the 192.168.xx.xx range? Or do you only want the DHCP server to hand out 192.168.xx.xx addresses to clients while keeping the server's address?
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