Using 2 routers on one network

Sony, HP, self
August 3, 2007 at 09:48:28
Specs: Vista and XP, 1 to 2
I have my home wired for DSL (AT&T). In the process there were two locations that DSL connection was installed. I have always only used on of these connections with a router/modem 10/100 and wireless.

Because of the home the wireless is not reliable therefore all of the desktops are connected to the 10/100. There are 10 desktops involved (yes this is in my home and not used for business).

Due to change in configurations of the locations of the desktops it would be easier if I could just plug another DSL router/modem into the 2nd DSL wall plug and use it for 3 or 4 computers. I would leave the original router/modem alone feeding the other computers.

I want to have all 10 computers shown at all locations as just one network with it being fed from two routers/modems. Since this is not a business - speed is not a top priority. Expense is important and I do have the present DSL router/modem and I do have another brand that I could use or just buy a new matching one. It would be far easier to use dual routers than to rewire.

Can this be done?

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August 3, 2007 at 10:05:01
Only if your isp gives you TWO wan ip addresses. Normally you only get one. Call them and ask.

Also understand the two networks will not talk to each other.

Imagine the power if you knew how to internet search

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August 3, 2007 at 10:41:35
Why does it have to be two routers when you could easily attach inexpensive D-link 8-Port 10/100 Desktop Switch to any one of the router ethernet port - with no fuss and no configuration to worry about? It autosense the whole setup.


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August 3, 2007 at 11:03:24
Even with two IP addresses it still wont work unless you have two separate telephone lines and that means two separate accounts.

If the two DSL sockets are on the same line it will be an either or situation, not both at the same time. If they are both on the same line the two modems will interfere with each other.

An 8 port switch is the best solution.


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August 3, 2007 at 12:40:24
Good point StuartS on the physical aspect of dsl. I was just thinking the logical aspect of network addressing.

A switch IS the best solution given the criteria

Imagine the power if you knew how to internet search

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August 3, 2007 at 14:31:08
My guess is you have only one phone line and although you may think you have two dsl connections. You would know it if you paid for two and well, then you would have two. If not then you could easily upgrade in most cases. I could only guess they would charge you another phone line plus the dsl fee. Maybe not.

The DSL is nothing special. It is plain old telephone line. You don't even have to install filters on the other phone plugs unless it causes issues that you can't live with.

You should be able to move the dsl modem to any phone jack in your home that DOESN'T have a filter either on it or behind it. You may have to use an ohm meter to see what is going where.

You might be better off with just using a device that connects ethernet across an electrical plug to plug. Then use a simple hub or switch to gain ports in other areas of the home.

I read it wrong and answer it wrong too. So get off my case you goober.

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August 4, 2007 at 06:38:37
Not to pick knits guys but........most every home in north america has a single phone line coming into the house yes, but, it's a 2 pair (ie: 4 wire) line and each phone connection itself uses only 2 wires. So, you have enough for two separate phone's (or two separate DSL connections) in your home.

But, as jefro pointed out, if you had two separate DSL connections, you'd be paying for them and you'd know it.

When they first came out with DSL where I live, they used to put a filter on the line with the DSL connection. These days, they give you little filters you actually plug into the wall jacks and then you connect your telephone to the filter. With my most recent connection, I got 4 filters. These are required on the lines with the telephone(s) attached.

'cooleydd' may be talking about a situation where they've put a filter on the line for the actual DSL connection. This wouldn't make for two separate DSL connections but would give you two separate places you could plug your DSL modem into.

coolyedd: you can find out simply by plugging your DSL modem into the second location. Does it work? If yes, then you can use it, if no, then it's not a DSL connection and you can't. But I would bet it's not a "second separate" connection. As again, you would know if it were because you'd be paying for it.

You could always call your provider and talk to them about it and find out for sure.

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August 7, 2007 at 16:57:41

Just to add to the mix.... you can certainly get two separate networks to talk to each other. How do you think your PC pulls up a web page?

Ahh, routing is a wonderful thing =)

Okay, okay, they're not going to talk to each other over the private segment. But pain in the ass routing/ nat setup can get the two talking via the public segment.

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