installing new modem

[jl3574]

i have a server setup with DHCP ,DC,and domain controller.
i assigned it a static
ip of 192.168.16.12
gateway: 192.168.16.254

the gateway is the old modem.
we got a new modem and when i plug it in , the default ip on that is 192.168.1.254

my question is how do i get the new modem to link back to the 192.168.16 domain ? do i manually change the IP on the modem? or do i change my static ips to 1's instead of 16's?

or do i change somthing in my DHCP like add a mac address to assign to ip to 192.168.16.254 so i don't lose my settings?

please direct me the proper way to doing this.
thanks.

 

[Davetoo]

Change the IP on the modem to match the old one(without me having to ask why you use a modem, etc.).

I'm Certifiable, not cert-ified.
It just means my answers are from experience, not a book.

There are no more PDC's! There are DC's with FSMO roles!

 

[jl3574]

when i first plug in the modem. i would get in the interface by 192.168.1.254 and while in the interface as soon as i try to change to 192.168.16.254 it will refresh and i can't get int othe modem interface anymore and i would have to click on the manual reset button. to connect to it again.

 

[Davetoo]

THen you need to contact the modem manufacturer and discuss the issue with them.

I'm Certifiable, not cert-ified.
It just means my answers are from experience, not a book.

There are no more PDC's! There are DC's with FSMO roles!