The situation: Two formerly completely separate Windows 2000 AD domains need to be connected to a common router. (The reason why is not important.) Unfortunately (for me), both domains currently have the same network address, which is (say)
So as not to confuse the router, I decide to renumber the smaller of the networks to (say)
192.168.128.0/24. Basically, I want to change the 3rd octet of the network number from
128. What do I need to update (and in what order, if it matters) on the DCs in order to complete the change with a minimum of problems?
To keep it simple, let's say the network to be renumbered has one DC (yes, I know, best practice is for 2 or more), and that DC serves just DNS and DHCP (and AD, of course). Is there a "best practice" for renumbering a network in an AD domain, or am I fine just bashing the DNS and DHCP settings on the DC until they all have the new network number?
And finally: How does the answer change (if at all) if there are two or more DCs in the affected domain?