I've got a pretty nasty situation. Me and my friend each own a cable modem. We'd like to setup a home network between three computers using both modems. The cable modems have dynamic ips that the DHCP changes about once every month. Is it possible to setup a home network running Unix/Linux/BSD/Windows with this configuration? If so I'd greatly appreciate your help. Thanx!
the modems dont act as routers do they? if so then i dont think theres any way to do it because the router will try to direct ALL net traffic to it, and having two routers isnt good.
Sorry, are you talking two cable modems on one cable modem line or two cable modems, 2 cable modem lines? Are you looking to create a single home LAN, with dual cable modem capability?
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The two cable modems have to be on the same cable (split) since there is one cable input from the street which is then divided between some TVs and the would-be 2 cable modems. One LAN, dual cable modem for dual bandwith if possible (which I doubt) if not then a cable modem for one computer, a cable modem for the other computer, and both computers networked together so we can share files. This is where the ip problem kicks in, because I don't know if my computer, for example, would try to access the remote ips through my friend's cable modem, or only through mine (since we are networked...)
Sounds like to me you guys are spending too much on your cable bill. Why not get rid on one modem and split the bill. I can play games while my wife surfs the web with no effect. I have even downloaded 60 meg movies on one computer and still noticed no slow down on the other one. I even tried downloading large files simultaneously on both computer and I was still getting 60 kbs on each computer. I just bought a cheap linksys router (laugh all u want, it works great) to network the computer together.
Then again you sound like you know a lot more about networking then I do so I’m sure you have a good reason for the second modem.
Thx & Cya
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Thanx for your idea but I had thought of that My ISP does not cap downloads, and since we're almost alone on our node I frequently get speeds of 400k/s. My upload though is capped at 16k/s. And the more of the upload bandwith I use, the less download bandwith i get in direct proportion, up to the point that when I upload at 16k/s, my download is down at 30-40k/s. With three computers on one network, one is bound to be uploading something at any time which is the reason I want to keep the 2 modems ;-) Plus cable isn't that expensive up here (quebec) and since I get about 50 gigs downstream a month by myself, I really need the bandwith! Thanx for your idea though.
Right, short answer is - this is not going to work. Long answer is this is probably not going to work.
Okay, you have 2 cable modems, 1 cable line. The two cable modems are not going to give you double bandwidth. Why do you want 2 cable modems for 2 pcs? Why not just get a cable modem router and let that NAT your IP behind 1 IP? If your games won't support NAT access, then you need to apply for a second P address off the cable supplier and then connect a hub to the cable modem and then 2 pcs to it.
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Damn, that's what I was afraid of! There isn't a piece of software that would, by any chance, be able to redirect traffic from one computer to one external ip and from the other computer to the other ip? And by the way, the bandwith is divided between Mac addresses, the cable line having a limit of 36Mbits/s the fact that there are more than one modem on the cable line will not diminish the bandwith for each modem. I have tested this and am able to download at 400k/s off the two cable modes that are plugged on the same cable coming in from the street.<P ID="edit"><FONT SIZE=-1><EM>Edited by kfkmentor on 05/23/01 01:09 PM.</EM></FONT></P>
Are you asking from the basis of having 2 pcs, 1 cable modem and 2 registered IP addresses? In that case you will not need to do this.
If you want to have 1 registered cable IP address, you have to hide the second PC behind the first, or both of them behind a router. Doing this will prevent _some_ types of online gaming from working, although I still do some gaming and it works fine. I've heard that UT doesn't though for example.
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I guess i won't be complaining about my connection speed anymore. I can frequently hit as high as 800kbps, and my upload has hit as high as 525, but usually hovers around 260.
i have pretty much the same advice as everyone else. Get a second network card, in one of the computers, make that computer the server. That way you can do away with teh second cable modem. you don't even need to go linux/unix, you can use windowsME, 2000, or NT. From there, the incoming cable, from the modem goes to the first nic, then the second connects either straight to the other computer, or to a hub, then to the second computer and possibly more. That's the way i'd do it.
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