Two routers, two ISPs, one network?

Associate
Joined
17 Jan 2003
Posts
376
Location
Andover
Right I've been looking around the net but I can't seem to get a definitive answer.

What I'm trying to do is I guess 'bridge' two networks together so I can see computers on the network not on my immediate network (router).

I have two routers setup individually, both are WRT54G routers, both work great independently. Now I know if I just simply put a ethernet cable from one router to the other things will start to screw up because of the DHCP conflicting all over the place.

I've been trying to follow this guide >> http://www.chriscraig.net/blog/2007/01/04/two-isps-one-network/ but I start to run into problems just setting up one router manually, disabling the DHCP seems to start making things difficult.

I am manually able to setup my NIC so it can see the router gateway 192.168.1.2 and so I am able to change settings on the router, but then I can't get onto the Internet, a WAN IP still shows up under the status tab.

I'm so confused! I must be doing something wrong. Any help would be greatly appreciated. :)
 
hmm unfortunately I don't have a spare NIC card, would be really useful if I could get the whole network to work the way i'm trying, it just feels like I'm doing something wrong but can't quite pinpoint what it is..

If I can get hold of a spare NIC card (maybe a USB one?) I will give that a try.
 
Sounds like your setting the wrong router as the gateway, either that or you've assigned a manual IP with the correct gateway and not put in the DNS servers.
 
I have three routers, three ISPs (don't ask) and one network.

I have a router on 192.168.0.1, .0.11, and .0.111. and they're all connected via ethernet. Only one of the routers control the DHCP, but that's on the one connected to the crappest ISP. I have the important computers on a static IP and my mum and brother just connect, through DHCP, to the internet.

Then depending on what ISP I want to use, I'll change gateway and away I go.
 
Seems pretty pointless and very long winded manually changing the gateway each time. Short of a script to do it i'd be inclinded to set somthing up to bridge them all.
 
did you have to do anything else manually to the static routers? Like Sp00n said above, the DNS servers?
 
Seems pretty pointless and very long winded manually changing the gateway each time. Short of a script to do it i'd be inclinded to set somthing up to bridge them all.
I right click the icon in my systray and change gateway. I don't really want three network cards and three lots of wires coming into my laptop.
 
did you have to do anything else manually to the static routers? Like Sp00n said above, the DNS servers?
They all use their own ISPs DNS servers. I guess I can change the DNS server in windows to one of the gateway IPs but I don't often change the DNS servers.
 
well i meant on the actual router, you say that one of your routers is DHCP controlled, what about the other routers? what do you do with them?
 
heres how

2 routers go into switch [which could connect to other switches]
routers provide no dhcp
router1 is 192.169.0.1
router2 is 192.169.0.2
you do static ip assignments in the range of 192.168.0.3-x [x=amount of devices]
You put the .1 as gateway for some and .2 as gateway for others.
You are still on the same network for printing and file sharing.

and to give the systems net access you will have to setup each nic & wifi adapters manually.

if the router support Address Reservation add each of the nics mac address. then each nic will always have
a assigned ip to 1 of the boxes depending on which box you want the system to get its access from.

oh yea leave a low end of range of ips when adding the nic mac adresses to a router so if you ever add a new
nic card it will not create a ip conflict .
 
Last edited:
hmm i think you could do it if the router supports the PPPOE. = Point-to-Point Protocol over Ethernet

The PPPoE are the protocols used to communicate between your routers ADSL port and the exchange, nothing to do with the Switch side of your router, thats just bog standard ethernet

EDIT: nm ninja edit:D
 
yes rick827 i didn't read his post right the first time lol. then after posting
i knew it couldn't be done the way i said lol :)
 
Cheers Tosk, I will give that a go, do I need a switch to go between the two routers or can I have a ethernet cable go straight from one to the other?
 
you will need a switch box to make it work m8

ive never set any think like this up be for but i have an understanding
on how it works.
 
Last edited:
there is more info on the net if you need to get more of an understanding of how
it all works. just google it im sure you will find some think.
 
edit: well m8s made me look like an idiot hes only trying to tell me how to do it via
routers using wan ports lol sorry about this.

i will try to get the right info next time i post lol
 
Last edited:
well i meant on the actual router, you say that one of your routers is DHCP controlled, what about the other routers? what do you do with them?
Oops, sorry. I mean it is the DHCP server that controls the internal IPs. Two routers are ASDL routers which logs into the service for me, one is a cable router.

You don't need another switch between them. I just plug it all in, set the IPs and it works.
 
Thanks for the help all, I finally managed to get it working. I didn't realise that you had to manually put in a DNS server address for the NIC, which was the same as the gateway address. Once I put that in all worked like a charm.

I mainly did what Tosk said at 2:11pm, but I didn't need a switch, just plugged an ethernet cable straight from one router to the other.

Many thanks for all the help :)
 
Back
Top Bottom