OT:2 cable modems?

I have access to two cable modems right now. Mine, a pretty old 3com non-Docis modem, and a newer fully Docsis Motorola modem(my son's who moved to a non-cable area) I want to move one of my computers across the house, out of cat5 net cable range from the router and other modem downstairs. Can two cable modems co-exist on the same incoming coaxial line? I would have to run a splitter to get a 2nd coax line running to the new room, but both modems would still be on the main line into the house. Anybody know? Startup costs on Wireless are a big roadblock and the distance would probably be 50 or 60 feet through a floor and several walls...Dunno how good that would be. dave henrie

I don't think so. Because the modem ID must be listed at your cable office. So to run 2 ID's, you'de more than likely have to get a 2nd account. Feel free to call your cable company and verify this though. On Tue, 11 Nov 2003 16:36:50 -0600, Dave Henrie <[email hidden]> wrote:

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> > I have access to two cable modems right now. Mine, a pretty old 3com >non-Docis modem, and a newer fully Docsis Motorola modem(my son's who moved >to a non-cable area) I want to move one of my computers across the house, >out of cat5 net cable range from the router and other modem downstairs. >Can two cable modems co-exist on the same incoming coaxial line? I would >have to run a splitter to get a 2nd coax line running to the new room, but >both modems would still be on the main line into the house. Anybody know? >Startup costs on Wireless are a big roadblock and the distance would >probably be 50 or 60 feet through a floor and several walls...Dunno how >good that would be. >dave henrie

wow, you must live in a big house ;-). i though CAT5 could go about 300 feet or so before needing assistance. How much distance do you have to go? And I agree with the previous post. You cable company maps your account to the cable modem itself. I think if you plug the old one in, nothing is going to happen at all as it will be nonfunctional. With that said, just plug the thing in and try it. What have you got to lose. good luck, jeff On Tue, 11 Nov 2003 16:36:50 -0600, Dave Henrie <[email hidden]> wrote:

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> > I have access to two cable modems right now. Mine, a pretty old 3com >non-Docis modem, and a newer fully Docsis Motorola modem(my son's who moved >to a non-cable area) I want to move one of my computers across the house, >out of cat5 net cable range from the router and other modem downstairs. >Can two cable modems co-exist on the same incoming coaxial line? I would >have to run a splitter to get a 2nd coax line running to the new room, but >both modems would still be on the main line into the house. Anybody know? >Startup costs on Wireless are a big roadblock and the distance would >probably be 50 or 60 feet through a floor and several walls...Dunno how >good that would be. >dave henrie

j[nospam][email hidden] wrote in news:[email hidden]:

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> wow, > > you must live in a big house ;-). i though CAT5 could go about 300 > feet or so before needing assistance. How much distance do you have > to go? And I agree with the previous post. You cable company maps > your account to the cable modem itself. I think if you plug the old > one in, nothing is going to happen at all as it will be nonfunctional. > With that said, just plug the thing in and try it. What have you got > to lose. > > good luck, > jeff >

I was always under the impression that 25' from router to NIc was the norm, with 50' as the max for all the cabling. I will say that when I use the longest cable to get to my current upstairs room, my system is much slower surfing the net than the other three possible system's that are hooked up in the basement. My son has his 'puter and his friends often bring a laptop and a desktop system to fill up the ports for my router. So when all four are connected..even not actively gaming on the net..My system is noticably slower. So I figure that stretching the cabling another 25 or so feet would really be pushing my 100mbs lan. dave henrie

T. Wortman wrote:

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> I don't think so. Because the modem ID must be listed at your cable > office. So to run 2 ID's, you'de more than likely have to get a 2nd > account. Feel free to call your cable company and verify this though. > > On Tue, 11 Nov 2003 16:36:50 -0600, Dave Henrie > <[email hidden]> wrote: >

Yea, they usually charge you $5.00 or so for a second IP though and not for a full new account.

i've got 100 feet of cat5 that runs to a second router and then another 75 feet off that to one of my computers. works fine. Dave Henrie wrote:

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> j[nospam][email hidden] wrote in > news:[email hidden]: > > >>wow, >> >>you must live in a big house ;-). i though CAT5 could go about 300 >>feet or so before needing assistance. How much distance do you have >>to go? And I agree with the previous post. You cable company maps >>your account to the cable modem itself. I think if you plug the old >>one in, nothing is going to happen at all as it will be nonfunctional. >>With that said, just plug the thing in and try it. What have you got >>to lose. >> >>good luck, >>jeff >> > > I was always under the impression that 25' from router to NIc was the > norm, with 50' as the max for all the cabling. I will say that when I use > the longest cable to get to my current upstairs room, my system is much > slower surfing the net than the other three possible system's that are > hooked up in the basement. My son has his 'puter and his friends often > bring a laptop and a desktop system to fill up the ports for my router. > So when all four are connected..even not actively gaming on the net..My > system is noticably slower. So I figure that stretching the cabling > another 25 or so feet would really be pushing my 100mbs lan. > dave henrie

"Dave Henrie" <[email hidden]> wrote in message news:[email hidden]...

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> I was always under the impression that 25' from router to NIc was the > norm, with 50' as the max for all the cabling. I will say that when I use > the longest cable to get to my current upstairs room, my system is much > slower surfing the net than the other three possible system's that are > hooked up in the basement. My son has his 'puter and his friends often > bring a laptop and a desktop system to fill up the ports for my router. > So when all four are connected..even not actively gaming on the net..My > system is noticably slower. So I figure that stretching the cabling > another 25 or so feet would really be pushing my 100mbs lan. > dave henrie

Well, I ran a 75 footer from my router to my wife's laptop in our bedroom with no noticable decrease in speed, but I don't think they make cables any longer than 75 feet.

Dave Henrie <[email hidden]> wrote in message news:<[email hidden]>...

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> j[nospam][email hidden] wrote in > news:[email hidden]: > > > wow, > > > > you must live in a big house ;-). i though CAT5 could go about 300 > > feet or so before needing assistance. How much distance do you have > > to go? And I agree with the previous post. You cable company maps > > your account to the cable modem itself. I think if you plug the old > > one in, nothing is going to happen at all as it will be nonfunctional. > > With that said, just plug the thing in and try it. What have you got > > to lose. > > > > good luck, > > jeff > > > I was always under the impression that 25' from router to NIc was the > norm, with 50' as the max for all the cabling. I will say that when I use > the longest cable to get to my current upstairs room, my system is much > slower surfing the net than the other three possible system's that are > hooked up in the basement. My son has his 'puter and his friends often > bring a laptop and a desktop system to fill up the ports for my router. > So when all four are connected..even not actively gaming on the net..My > system is noticably slower. So I figure that stretching the cabling > another 25 or so feet would really be pushing my 100mbs lan. > dave henrie

Oy! dave, Jeff is correct, cat5 is good for 300ft before needing assistance from a bridge or switch/router. In your above description, have your cable company check your signal strength from the street to the entry point to your house. While he's there he should have no problems checking your sig. strength to your other end points. You shouldn't have to pay for this, just call up a tell them your are having intermittent connectivity issues. Also, hard code all nics' to 100/full NOT auto negotiate. Also, some time ago i used a network tool from netIQ that monitored point to point transmissions giving stats on latency and packet loss, may want to check it out by doing a google search. forgot to mention, try using static IP's for your clients behind the router. I had problems few years ago when my sonic wall firewall was dishing out IP's - browsing was slow going tried everything. Finally, set up static IP's and everything was lightning fast. Anyway, I have a Sun E450 dishing out the goodness from my basement and I have hundred's of feet of cat5 running through the house with no problems. good luck.... oh...forgot your other inquiry. don't waste your time with your 2nd modem. it won't work unless the serial (mac) is registered with your cable company. even if its registered, you'll need a separate line running to your house to use it, it will not work 'in - line" with your other modem. email me if you want a clarification. cheers

> Oy! dave, > > Jeff is correct, cat5 is good for 300ft before needing assistance from > a bridge or switch/router. Alright, now I remember where I got that 25 + 25 max number...not cat5 specs per se, but before I had a router...before routers became common, I had a dlink hub. It was a pile of junk, burnt out 3 times in 2 years, that is why I now have a router...but the hub specs specifically limited the cabling to 50feet max with no one length greater than 25. So...since I'm a packrat and still using the original cables, I probably have a very low quality cable or one that isn't even fully cat5 capable. I've just come back from shopping and picked up some FastCat5e cables. I'll see if that makes a difference. Say goodbye to the old old blue cable. dh

> I'll see if that makes a difference. Say goodbye to the old old blue > cable. > dh > Well that was a failure. I bought an extra long piece(50ft) to test if I could move my box to another room. An while the ping reported to the bullrun server is the same, web surfing is dang near at phone line speeds.----- blech ------ With one other machine on the router, much closer and showing normal cable speeds. dh

On , Dave Henrie <[email hidden]> typed

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> Well that was a failure. I bought an extra long piece(50ft) > to test if I could move my box to another room. An while the ping >reported to the bullrun server is the same, web surfing is dang near at >phone line speeds.----- blech ------ > With one other machine on the router, much closer and showing normal >cable speeds. >dh

Maybe that PC just has a crap ethernet card.

> Well that was a failure. I bought an extra long piece(50ft) > to test if I could move my box to another room. An while the ping > reported to the bullrun server is the same, web surfing is dang near at > phone line speeds.----- blech ------ > With one other machine on the router, much closer and showing normal > cable speeds. Perhaps adjusting the MTU would help. Alan