How do I Share One Ethernet Port, already connected to a Switch?

It doesn't work because your router has the DHCP turned on and it is giving the IP addresses to the 2 computers in the room, and not the real router in the "server" room which should be supplying the IPs. Cascading routers is not the best idea because each router wants to be the boss. As you have found out, this leads to conflict. Here is an excellent article on how to set up your secondary router as a switch: http://home.comcast.net/~hqh/html/tworouters.htm Set your second router up with a hardwired connection before you connect it to the network. When you attach it back it will behave as a switch and not a router and your 2 machines will get their IPs from the main router like they should.

my friend this is what you will do connect the the cable in your room to the wan port on the router , accees the router gui (graphicl user interface ) thats your 192.168.xxx in the browser disable the dhcp server in the router and set to dynamically accept an ip , your ip will then come from your original router in the server room after doing this you can then use the other 4 port for your pc they will all be on the same segment because you disable this feature in the router . goodluck..dee

DO NOT use a router. A router will isolate you from the rest of the house. Install a 5 port Ethernet Switch in the room that need the connections, Depending on the switch you may need to install a crossover cable. Read the instruction for that switch. Now just run patch cables to the 2 devices. -tcw

for the 2 hosts in the one room, edit the network configurations of both computers so that the default gateway is the Dlink router's ip address which is connecting the 2 computers together. a router segments broadcast domains and is causing any "hello" packets sent via your 2 computers to be dropped at the router, hence the computers in other rooms of the house wont know of these computers. chances are you router is issuing DHCP for one particular network segment, but not the other (because of the router, you will have 2 different network segments [the differing ip addresses you talked about]) you will need to assign DHCP for the network which is not listed in your dhcp table already. you sound like you know what youre talking about, so i assume you will know how to enter into your routers management page via a computer web browser and change the DHCP settings. router ip 192.168.0.1 subnet 255.255.255.0 DHCP SETTINGS: NETWORK #1 192.168.0.2-254 255.255.255.0 NETWORK #2 192.168.1.1-254 255.255.255.0 ROOM #1 computer 1 ip 192.168.0.2 subnet 255.255.255.0 default gateway: 192.168.0.1 computer 2 ip 192.168.0.3 subnet 255.255.255.0 default gateway: 192.168.0.1 ROOM #2 computer 3 ip 192.168.1.1 subnet 255.255.255.0 default gateway: 192.168.0.1 ROOM #3 (server room) computer 4 (direct connection to switch) ip 192.168.1.2 subnet 255.255.255.0 default gateway: 192.168.0.1 hope this helps

First of all, double check your make and model. According to http://support.dlink.com/products there is no DI-524. Secondly, I'm guessing that the "switch" you are referring to is either an intelligent switch (also known as a layer 3 switch) or it is in fact a router which would explain why you can't talk to devices that are connected to that "switch" So, basically, you need ONE router and after that you can pretty much have as many switches as you need... say one switch in each room. In reality you should have something like this: Router -------> 8 port switch ------> rooms 1, 2, 3, 4, 5 etc. then add 4 port switches in each room as necessary. You can get larger switches with more ports if necessary but that means more $$$. Look at these devices: This would be for a house or small office: http://www.newegg.com/Product/Product.aspx?Item=N82E16833127082 This would be for a big house or normal office: http://www.newegg.com/Product/Product.aspx?Item=N82E16817111030 This would be for one room with one of the two devices above being used for the entire building: http://www.newegg.com/Product/Product.aspx?Item=N82E16833127083