Lan/Wan
Kurt Neufeld
I'm setting up a lan and that's not a problem. The problem is another
computer that is in a different building about 250 meters away.
We would like this computer to be on the ethernet lan, but I think it's too
far away for UTP. Can you setup 2 modems directly connect with a standard
phone line? ie: not going through the telephone system.
On another topic, could somebody give me a hand with my ftp server problem?
See earlier posting from Monday.
Thanks.
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Aaron Blair
both slow and unreliable. The best thing to do would be to either 1: Use
COAX to run the 250 meters, I believe COAX is rated to 300 meters or
something, or 2: (preferred) Use a fiber optic line to run that distance.
---
Aaron Blair
Newave Technologies Inc. - http://www.newave.net
"How could this be a problem in a country where we have Intel and
Microsoft?" - Al Gore on Y2K
Gregory P. Smith
> I'm setting up a lan and that's not a problem. The problem is another
> computer that is in a different building about 250 meters away.
>
> We would like this computer to be on the ethernet lan, but I think it's too
> far away for UTP. Can you setup 2 modems directly connect with a standard
> phone line? ie: not going through the telephone system.
Look in to 10baseFX and 100baseFX. These are the standard fiber optic
protocols for extending ethernet across long distances. Be prepared,
fiber devices and fiber itself costs a lot more than copper.
Alternatively, I highly recommend "Tux boxes" by "Tut Systems":
http://www.tutsys.com/xl_family_overview.htm
Greg
Ryan Walker
You may also want to look into the Pairgain line of Products -- The
Megabit Modem product line is great -- the only problem is that you're
limited to 768kbps, but if you were contemplating a modem solution, this
is likely not a problem.
You can pick up a set of MM 768's for around $2000.00. They can be
configured to act as a bridge, or you can use the built in routing
functions (though they are limited.) I've used them with great success
-- easy to install, and once they're up, they stay up. They operate
over 1 copper pair..
Hope this helps.
Ryan
Aaron Blair wrote:
>
> I wouldn't set it up with twisted pair, and a null modem solution would be
> both slow and unreliable. The best thing to do would be to either 1: Use
> COAX to run the 250 meters, I believe COAX is rated to 300 meters or
> something, or 2: (preferred) Use a fiber optic line to run that distance.
>
> ---
> Aaron Blair
> Newave Technologies Inc. - http://www.newave.net
>
> "How could this be a problem in a country where we have Intel and
> Microsoft?" - Al Gore on Y2K
>
> > -----Original Message-----
> > From: Kurt Neufeld [mailto:kneu...@verity.com]
> > Sent: Wednesday, January 13, 1999 1:43 PM
> > To: linu...@vger.rutgers.edu
> > Subject: Lan/Wan
> >
> >
> >
> > I'm setting up a lan and that's not a problem. The problem is another
> > computer that is in a different building about 250 meters away.
> >
> > We would like this computer to be on the ethernet lan, but I
> > think it's too
> > far away for UTP. Can you setup 2 modems directly connect
> > with a standard
> > phone line? ie: not going through the telephone system.
> >
> > On another topic, could somebody give me a hand with my ftp
> > server problem?
> > See earlier posting from Monday.
> >
> > Thanks.
> >
> >
Julian Macassey
>
> Alternatively, I highly recommend "Tux boxes" by "Tut Systems":
>
> http://www.tutsys.com/xl_family_overview.htm
I use a pair of these to extend some ethernet to a
warehouse across a street. It works.
Tip # 1 Measure the resistance of the pair you intend to
use before buying the system. Your copper may be too long.
When it works, its magic.
--
"I want to say one thing to the American people. I'm going to say
this again. I did not have sexual relations with that woman, Miss
Lewinsky. I never told anybody to lie. Not a single time. Never.
These allegations are false and I need to go back to work for the
American people." - President Clinton, January 26, 1998.
Dan Hollis
> You may also want to look into the Pairgain line of Products -- The
> Megabit Modem product line is great -- the only problem is that you're
> limited to 768kbps, but if you were contemplating a modem solution, this
> is likely not a problem.
I like the Tut Systems boxes better. XL-2412 goes up to 1.152mbit. They
should also be cheaper than the Pairgain units.
-Dan
Nicolas St-Pierre
On Wed, 13 Jan 1999, Gregory P. Smith wrote:
> Look in to 10baseFX and 100baseFX. These are the standard fiber optic
> protocols for extending ethernet across long distances. Be prepared,
> fiber devices and fiber itself costs a lot more than copper.
>
You can also go with 1000baseSX. I have a setup with a PowerRail 1000
routing switch. It's got 20 10/100 ports and 2 1000SX ports. You can do
between 275m (62.5/125um) and 550m (50/125um) depending on the multimode
fiber type you use. Packet Engines also has some 1000SX boxes that let
you do about 100km though I doubt your other computer is that far!
Nick
Mircea Ciocan
Try a pair of BreezeCom AP10+SA10 radio modems, 3 Mbit/s microwave
modems, direct ethernet conect, bridginng every protocol you need (
tested with TCP/IP, NetBEUI, IPX), SNMP manageable, IEEE 802.11
compliant and also on the Pro models a nice voice channel along data. We
use this beasts here on a much longer distance for about 1 year and
works flawlessly. And did I mention it is VERY PnP with Linux, you just
plug the cable and that's all... ;), a rare thing this days when every
thing is about to become windozed :(.
HTH Mircea C.
Kurt Neufeld wrote:
>
> I'm setting up a lan and that's not a problem. The problem is another
> computer that is in a different building about 250 meters away.
>
> We would like this computer to be on the ethernet lan, but I think it's too
> far away for UTP. Can you setup 2 modems directly connect with a standard
> phone line? ie: not going through the telephone system.
>
> On another topic, could somebody give me a hand with my ftp server problem?
> See earlier posting from Monday.
>
> Thanks.
>
Bill Sneed
>
> I wouldn't set it up with twisted pair, and a null modem solution would be
> both slow and unreliable. The best thing to do would be to either 1: Use
> COAX to run the 250 meters, I believe COAX is rated to 300 meters or
> something, or 2: (preferred) Use a fiber optic line to run that distance.
>
Besides the other good suggestions, there's nothing wrong with coax as
long as you take appropriate
electrical precautions against ground-loops, induced EMP from
lightning strikes, making sure ground in both building is equal to
earth (ideally) etc. Given the cost of multimode fiber and media
converters, why worry about all of the above??? Put in fiber. Before
you know it they'll be 4 computers in the other building anyway! :-)
.......Bill Sneed, Prospect, Maine........
Luis Forra
>
>I'm setting up a lan and that's not a problem. The problem is another
>computer that is in a different building about 250 meters away.
>
>We would like this computer to be on the ethernet lan, but I think it's too
>far away for UTP. Can you setup 2 modems directly connect with a standard
>phone line? ie: not going through the telephone system.
>
>On another topic, could somebody give me a hand with my ftp server problem?
>See earlier posting from Monday.
>
>Thanks.
I have setup a lan segment with 300meters with good Coaxial Cable with
10base2 adapters or from hub to hub.
Regards.
Luis Forra
---