[TriLUG] How to connect two buildings a mile apart...

Wed Jul 31 13:57:39 EDT 2002

Welp, here we go again.

You have a shitty attitude.  You asked for help, I offered it.  I did not
force you to accept it.  If you read the last posters url,
it should make you more inclined to use Fiber as I and another poster
suggest.

Also, another poster suggested the cable company.  That is yet another way
to keep from paying the telephone company.

Bite me,

JD

Daniel Monjar <Daniel.Monjar at na.biomerieux.com>@trilug.org on 07/31/2002
01:51:24 PM

Please respond to trilug at trilug.org

Sent by:    trilug-admin at trilug.org

To:    trilug at trilug.org
cc:
Subject:    Re: [TriLUG] How to connect two buildings a mile apart...

jeez you have a shitty attitude.... we already have a leased line... I am
searching for ways not to have to pay the phone company.  while we aren't
IBM we do have a fairly involved global WAN so I am quite familiar with
telco based solutions.  I am looking for alternatives.

--On Wednesday, July 31, 2002 1:09 PM -0400 John F Davis
<johndavi at us.ibm.com> wrote:

>
> Hello
>
> Thanks for your opinion.  I thought we were doing something commercial
> grade here.  I didn't realize amateur high jinks were the order of the
> day.
>
> For what its worth, during the heavy squalls we had last week, I doubt
> microwave would work even  if was 100 yards between dishes.
>
> JD
>
>
>
> "William W. Ward" <wwward at pobox.com>@trilug.org on 07/31/2002 01:01:30 PM
>
> Please respond to trilug at trilug.org
>
> Sent by:    trilug-admin at trilug.org
>
>
> To:    trilug at trilug.org
> cc:
> Subject:    Re: [TriLUG] How to connect two buildings a mile apart...
>
>
>
> John -
>
> At one mile two directional antennas with WiFi and some good quality
> bridging APs should be sufficient to avoid rain fade AND potential
> interference from nearby users on the same channel, although I've
> experienced some unreliability with my low-end consumer AP and PCMCIA
> adapters in an omnidirectional state, YMMV.
> Effective radiated power limits are higher for point to point fixed
> installations, so he should be able to throw enough juice from end to end
> to
> overcome atmospheric interference.
>
> Dan -
>
> I'd suggest doing a bit of research beginning at
> http://www.seattlewireless.net and following links from there.  Since
> you're
> in a commercial house, you can spend a bit more money than the hobbyists.
> Many commercial-grade wireless systems can be used to extend
10-11mbit/sec
> over one or two miles with reliability.  Other alternatives include
> laser-based links, but I know little of them and the cost of WiFi systems
> is
> pretty low, even for commercial-grade hardware (such as Cisco's Aironet.)
>
> You'll want to place the access point and antenna as close together as
> possible, so consider something with an external enclosure, and you'll
> definitely want to install some sort of encryption on either end BEHIND
> the access point, as the common implementation of Wireless Encryption
> Protocol is unreliable.  A couple of well placed Linux boxes using a
> VPN-like bridge would be sufficient.
>
> Lastly, I don't have any experience with the 802.11a hardware, but you
may
> be able to invest in this and achieve something closer to 56mbit/sec
> throughput.
>
> Its a one-time expense, as long as the hardware lasts, so you can
> depreciate
> the expense over time.
> The only other possibility that I'd be interested in is dropping fiber
for
> that mile-span, but I beleive a mile's worth of fiber is >$3,000 before
> you discuss how to get it in the ground and terminated.
>
> -b-
>
>
>
> ----- Original Message -----
> From: "John F Davis" <johndavi at us.ibm.com>
> To: <trilug at trilug.org>
> Sent: Wednesday, July 31, 2002 12:50 PM
> Subject: Re: [TriLUG] How to connect two buildings a mile apart...
>
>
>>
>> Get a leased/dedicated line.  Since you pay by the mile, two miles ain't
>> going to set your company back that much.  Also, its not going to have
> rain
>> fade and will most likely be cheaper.
>>
>> JD
>>
>> Dan Monjar <dmonjar at bellsouth.net>@trilug.org on 07/31/2002 10:39:31 AM
>>
>> Please respond to trilug at trilug.org
>>
>> Sent by:    trilug-admin at trilug.org
>>
>>
>> To:    trilug at trilug.org
>> cc:
>> Subject:    [TriLUG] How to connect two buildings a mile apart...
>>
>>
>>
>> Not on topic but I'll give it a shot... I need to connect two buildings
>> about a mile apart... I currently have two T1's (one is used for backup)
>> between but the R&D folk don't think 1.5Mb is fast enough, go figure.
>> There is line of sight between the two buildings so I was thinking of
>> microwave or perhaps WiFi with a yagi antenna to make the beam more
>> direction.  What would you do?
>>
>> --
>> Dan <mailto:dmonjar at bellsouth.net>
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>>
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--
Daniel Monjar
IS Manager, Technical Services
bioMérieux, Inc.
Durham, NC US

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