Forward one IP to another on internal LAN

I'm working on a Windows file server upgrade that has lots of external dependencies via DNS and IP.  When its been retired I'd like to be able to take my time and reconfigure all the external devices individually.  I can easily forward DNS requests to the new file server and I was wondering how I could do the same for the IP since there are a bunch of devices (scanners mostly) accessing shares via IP.  I assume it could be done on my Cisco router but could use some help  with the syntax.
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BurundiLappConnect With a Mentor Commented:
Is there a specific reason you cannot assign the IP address of the old fileserver to the new one?
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I was thinking of doing this to have a safety net in case I needed to bring the other server back online come Monday but I think you have a point.  I could always set the IP back to what it is now if I run into any serious problems Monday morning.  Thanks for the clear thinking early on Friday morning BurundiLapp!
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BurundiLappCommented:
Glad to help.

I'd assign another IP to the old fileserver before you shut it down, then if you have to bring
it up again for any reason it won't interfere with the new fileserver.
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