Originally Posted by rocker22dallas
we would need to know the application of why your ip needs to be the same. inter network communications only use IP addresses to resolve mac addresses (used in any layer 2 networking, AKA switches) your IP will not matter because that is only used for communication through a layer 3 device (a router) if you are trying to use a file sharing application on another device, use the hostname of your computer, rather than the IP.
if i have a network with 2 computers: COMPA 10.10.12.1 and COMPB 10.10.12.2 with a subnet mask of 255.255.255.0
I can enter ping COMPA and through DNS it will resolve 10.10.12.1
same in reverse with COMPB
even if a computer has no IP address (for example a 169.x.x.x address) you can connect to it and network as long as you know the host name and are on the same network subnet
to find your hostname, open a command prompt and type "hostname" without the " marks
if you don't know how to open the command prompt or understand IP addressing, you should not be doing anything with this sort of thing.
however, you can remember one thing, even if your IP changes, the hostname will resolve through DNS
The IT dept should be able to either set a static address for you through DHCP, or you may already have one set. if there is no static ip either in DHCP or on your computer then it has likely changed.
if you are hosting a server on your local computer, that doesn't make much sense. esp if you have to move your computer. IP addresses can always be changed back, but any server in production should be hosted. on a server.