MODEM & WIFI DHCP problems

Kant Nguyen

Honorable
Jan 30, 2014
1
0
10,510
Hi,

I have a simple network config, but its not getting me what I want. Detail as below:

- Modem to connect to internet on 1st floor
- Router Wifi connect to modem with a RJ45 cable, on Ground floor, and 4 LAN ports of its run to others Wifi routers in other rooms in the house.

Now, I have a printserver, that connect directly to the Modem. Any machine that want to connect to that print server, have to be in the Modem's network.

I tried disable all the Router's DHCP server, but for the laptops to connect, I have to manually input static IP. That could work for PC, but our laptops travel a lot, and that would be a big fuss.


Oh and, I have this portable Tenda wifi router, its small, compact and to be traveled with. I once tried disable its DHCP server, hook it up to the modem, and all the devices connect to it, got the IP from the modem itself, and can connect to the printserver.

I could, acquire a switch, to put in 1st floor, and equip every room with this kind of wifi router, but i wouldn't trust its durability running 24/7 since its made for travel ... http://www.amazon.com/Tenda-Portable-Wireless-Extender-A5/dp/B008HODKOO

Is there anyway to work this around? I used to read somewhere about making all the routers broadcasting the same SSID and password, to let devices flexibly change between the signals to get the best out of it. But the same problem as mentioned above, unless I input static IP address.

So ... is there someway I can make it work as I want?

Thanks all for your time.
 
Sounds to me like that modem is really a combo modem+router.

If you connect your own router over its WAN to a LAN port on the modem+router, and you use a different network on each device (so let’s say the modem+router is using 192.168.1.x, you could use 192.168.2.x on your router), that printserver should be available to the 192.168.2.x network! Why? Because it lies upstream of the 192.168.2.x network. It should be as accessible as the internet is from the modem+router. If it’s not, then you have some sort of misconfiguration. Or else you’ve incorrectly described your network configuration.

And another thing. I assume the printserver is an ethernet printserver. Then why is the printserver on the modem+router anyway? Why not install it on the router behind it? Obviously that alone would solve the “it’s not on the same network” problem.

 

Kant Ng

Reputable
Mar 12, 2014
1
0
4,510
Well,

I will try the sollution tmr. The portable wifi router use 192.168.2.x, while the other one use 192.168.0.x, and the modem is 192.168.1.x

I have to put the print server there coz its the main office where the printer is used mostly...