Connecting 4 routers in one Workgroup

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darkive

Honorable
Nov 7, 2012
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HI there!!
I am setting up a network connection in a school right now and I am having a problem with there connections.
They are using 4 ISP Connections with 4 wireless routers its because of poor Internet connectivity in there place. The problem is they want to be in a one workgroup so that they can access the data freely.
the question is:
Is it Possible?
Do I have to use a device to connect the 4 routers? What Device?
Or Do i Have to configure the router?
 
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darkive

Honorable
Nov 7, 2012
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Ok so I got it.. I have to use Bridge Device to connect 4 network to communicate each other...
Can you suggest what is the best device to use in this matter?
 
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hang-the-9

hang-the-9

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Mar 25, 2010
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You will need to setup the device for bridging which is not a super simple thing to do when you first start. http://www.cisco.com/c/en/us/support/docs/ibm-technologies/source-route-transparent-srt-bridging/10676-37.html , you will probably be using transparent bridging since all the connections will be using ethernet.

You'll need to get a smart switch and then configure the ports of the inbound network connections from the different networks to forward traffic to the other ports. It won't be easy to setup. CISCO is probably the most robust equipment maker for this and they have a good software for setting up the switches. Although to work with them well it can take months and years of experience.
 
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bill001g

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Aug 9, 2012
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The details are going to depend a lot on how you have this hooked up.

The simplest solution network wise but also the hardest to maintain is to
1. cable the lan ports of the routers together.
2. assign all your routers ip in the same subnet using 192.168.100.1, 192.168.100.2, 192.168.100.3....etc
3. assign all your PC a IP in the 192.168.100.x network and put in put in their corresponding gateway.
4. make sure DHCP is disabled on all the routers.

To do this any other way is going to take lots of work and you will likely have to replace all your current internet routers with something that can actually do routing...a dd-wrt router can work.

If we assume you have say 4 independent networks giving out dhcp etc.
192.168.1.x,192.168.2.x, 192.168.3.x 192.168.4.x

What you need to do is create another network between these devices on a different interface on the router. In effect you create a second wan interface and plug all these into a switch. This connects all your routers together. Now lets say you use 192.168.100.1, 192.168.100.2, 192.168.100.3 192.168.100.4 for each of the routers.
In router 192.168.100.1 your would put in
route 192.168.2.x send to 192.168.100.2
route 192.168.3.x send to 192.168.100.3
route 192.168.4.x send to 192.168.100.4
In router 192.168.100.2 you would do
route 192.168.1.x send to 192.168.100.1
route 192.168.3.x send to 192.168.100.3
route 192.168.4.x send to 192.168.100.4

....and so on.


There are other ways to do this with commercial routers but I assume this is already complex enough.

In the first case the users would be on the same subnet and sharing will work mostly via broadcast. In the second one they need to know the IP that they want to share with but the should be able to send data back and forth without knowing the details of how it gets there


 
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