Are there any negatives to adding a second IP address (in the same subnet) to a single NIC on a domain controller?
The theory is there will be a "DNS Server IP." This is the IP that will be set as the DNS server on static assignments and what DHCP hands out. Example: Assume AD integrated DNS and all domain controller have DNS installed. The DNS Server IP: 192.168.1.5 Domain controller DC-1 has the IP 192.168.1.10 and the additional IP 192.168.1.5. When I want to retire DC-1 I would promote a new domain controller DC-2 which would have the IP 192.168.1.20. When both domain controllers have fully replicated and are functioning correctly I would remove the second IP (192.168.1.5) from DC-1 and add it as a second IP to DC-2. At this point there is still 2 domain controllers functioning but DNS clients that are pointing to 192.168.1.5 are using the new DC-2. Demoting the first DC-1 should not negatively effect any device after that. There is no moving IPs from computer to computer or renaming computers. I have done much googling and have not found an answer to this question. This is not multi-homed, everything is on the same subnet, and there is only 1 NIC in each DC. Thanks,
