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Connecting Router to Router

Posted on 2006-06-28
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Last Modified: 2013-11-29
I have 1 wired router (8 ports) which I have 5 computers and 2 network printers connected to it.  I need to add more computers, some wired and some wireless (laptop access), so I want to buy a wireless router.  The ones I have been looking at are 4ports wired and have wireless capability.  My questions are:

1) Can I simply connect my old wired (8-port) router to one of the 4 ports (LAN) in the new wireless router?
2) Are there any setup issues that I need to do in order to make it work?
3) Is it as simple as connecting a cable from 1 of the ports in the wireless router to the WAN port in the old wired router?
4) Do I need to connect my network printers to the new wireless router (in one of the 4 ports) or can i still connect it to the old wired router?
5) Any other things I should be consider?

I have a DSL connection by the way.
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Question by:urivera
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photograffiti earned 350 total points
ID: 17007228
It can work in a few different ways.
Your wireless router most likely has a WAN port and 4 LAN ports, in addition to it's wireless ability. You could connect the WAN port of the wireless router to your current router's open LAN port and that should allow the devices on the new router to get out to the Internet. However, you would need to open firewall ports and configure NAT properly for the devices on your current router to talk to the ones on the new router.
The other option would be to not use the WAN port on the new router and just use one of the LAN ports. Since they are just switch ports this would be essentially extending your network with an additional switch, with the added bonus of having wireless clients now too. Of course this take up an extra port on your new router so you only have 3 left to use. And you will need to connect these two devices via a crossover cable, unless the switch ports are MDIX capable.
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by:urivera
ID: 17007259
Thank you Photograffiti for you comment.  Could you go in more detail on how to setup the NAT and open firewall ports properly? I think I like your first solution better since it doesn't take up one of my LAN ports.
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by:photograffiti
ID: 17010086
Setting up NAT and opening firewall ports is different on every router. Whichever router you decide to get you'll just have to read the manual for those settings. It's a common situation enough, so there should be sections dedicated to it in their manual.
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by:urivera
ID: 17033758
I need an overview of how to setup NAT in the above scenerio. Could someone explain what NAT is.  I will be connecting the

wireless router --> wired router --> internet (cable modem)

the wireless router WAN port will connect to a LAN port in the wired router.

I have a wireless Linksys WRT54G. The wired router is a SMC Barricade (8port)

1) what should the NAT setting be for the wireless one?
2) what should the DCHP setting be for the wireless one?

what else do i need to do. Increasing points.
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