Why computery 2-3 floors do not see the server?

Laid in the hospital network of the first floor have ip range 192.168.0.255-192.168.0.255, and the 2003 server has ip address 192.168.0.111, the same ADSL modem with the ip 192.168.0.1, on the second floor of the computers with the ip 192.168.100.1-192.168.100.255 and ADSL modem with ip 192.168.100.1, and on the third floor with 192.168.200.1 ADSL modem with ip 192.168.200.1. why computers 1-2-3 floor can't see each other, and the components 2-3 of the floor can not podkoptit via RDP to server 2003. not all computers have a static address.
If the computer is 3 floors to tick to give SP you can automatically obtain IP and server first or 2 floor.
September 19th 19 at 00:06
3 answers
September 19th 19 at 00:08
Network physically connected?
The connection between the "modem" is?
Why the first floor has a range 192.168.0.255-192.168.0.255? (Ocupada?)

I understand you have this scheme:
1st floor - 192.168.0.0/24, gateway 192.168.0.1
2nd floor - 192.168.200.0/24 gateway 192.168.200.1
3rd floor - 192.168.300.0/24, gateway 192.168.300.1
But from you described, "If the computer...3 IP and server first or 2 floor."
The switches are connected, and each gateway DHCP enabled. And the gateways (modems/routers) routing between the networks is not configured.

The answer to the question "How much do you have computers?". If not very much, it makes sense to leave one "modem" and all give the IP of the same range. For example, 192.168.0.1/24.

But with such issues it is better to consult a specialist, while not breaking anything.

UPD 1:

If computers a lot, then I see these options:
Divide each network into different VLANs, and each Vlan to distribute your own IP range. For this you need a good router.

A more budget solution is:
The three network (the IP I choose for easy counting):
1st floor - 192.168.100.0/24 with the gateway of 192.168.100.1
2nd floor - 192.168.200.0/24 gateway 192.168.200.1
3rd floor - 192.168.300.0/24, gateway 192.168.300.1

On the ground floor, where server is the main network, the router leads to the Internet.
On the second floor of the switches should be to the router 2.
On the third floor of the switches should be to the router 3.

On router 2 and 3 should be raised NAT on one of the ports that go to the switch first floor. And they prescribe forwarding to the server on port 1189. Then on the computers of the second and third floor need to connect via RDP to 192.168.xxx.1:1189.
But then it is important that your urrutinier (aDSL modems) supported all this pornography.

On solovich hard to explain, in General, a simplified scheme:
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the computer a lot, I think you need to configure on the server 192.168.0.111 so that he could see other under network and they could connect. - braxton.Bod commented on September 19th 19 at 00:11
I in my post added information on possible solutions, but judging by your questions - they will say little.
And still refer to the spice.

Still can on the PC of the second and third floor, put in the default gateway 192.168.0.1 - mavis28 commented on September 19th 19 at 00:14
: fully studied the question, the budget option, as appropriate. thank you - braxton.Bod commented on September 19th 19 at 00:17
September 19th 19 at 00:10
I already wrote, if you put the Ip address of the machine, unable to address any of the networks 1 or 2 or 3 floors.
September 19th 19 at 00:12
Vobshem from the description I understand that you are wrong, and the idea is necessary to change the topology. Three DHCP servers are gross. But you can certainly help, if we manually type the server IP from all three ranges, all three networks will connect to it via rdp.
And generally - change the network topology until the big problems.

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