Clarification reg Domain Controller IP address change

Hi,
We are running on Windows MSCS Cluster (Primary / Secondary) for ECC Server.
The MSCS Cluster environment of ECC Server is a member of a Domain Controller.
We are planning to replace the Domain Controller, nevertheless all the settings / user names will remain the same.
The only thing will be changed is the IP Address.
For changing the IP address, we are planning to change the DNS and WINS IP address of the ECC Server accordingly.
Hence needs clarification on the following 2 points:
1. Is OS / SAP System Restart Required ??
For changing the DNS and WINS IP address of ECC Server,
whether the OS / SAP system has to be restarted ?
2. Effect on SAP System / Setting Change required on SAP
We would like to know whether there will be any issues with regard to SAP System Operation.
Especially we would like to know whether any setting changes needs to be done in the SAP System also.
Best Regards
Raghunahth L

Hi Anil,
Thanks for your reply.
That clears all my doubts.
Thanks to Eric and to you for spending your valuable time.
Best Regards
Raghunahth L

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