Combining two networks at a remote distance, how?

lmaxximl2012-08-20 11:14:17

Computer networks

lmaxximl, 2012-08-20 11:14:17

There is an enterprise with a large area, there are two buildings in different corners of the territory of the enterprise, these two buildings need to be connected into a local network. At the moment they are connected via wi fi, but communication is often lost and the quality of the channel is poor due to the fact that the air around is clogged.

The task is to combine:
Fiber optic cable is expensive, twisted pair will not work as much as most, and this is about 400 meters on the street.

What other ways are there?

Answer the question

In order to leave comments, you need to log in

18 answer(s)

CrazySquirrel, 2012-08-20
@CrazySquirrel

Why are only solutions at the hardware level considered?
Why VPN is not suitable in such a situation?

Vovanys, 2012-08-20
@Vovanys

Find out about renting a channel, maybe there is someone's presence there
. Or another option is to connect the Internet from the same company. And using their LAN to make your own virtual ...

Andrey Polyakov, 2012-08-20
@magnitudo

Definitely optics. And who told you that it is expensive? Look for a decent supplier.
I once looked for an office that would sell 200 meters of optics, a couple of media converters, scald and connect everything (the cable was laid by the enterprise). So the options were from 100 tr. up to sane 12-15.
Optics has one minus: if you break the cable, you will need to call specialists to weld it.

Andrey Polyakov, 2012-08-20
@magnitudo

along the way, they counted you with some armored cable ...
Look at the prices for the cable www.spk-t.ru/opticheskii-kabel . I don’t know how you are going to lay it, but almost all options are indicated there. One core is enough for you, but in reality you are unlikely to find less than 4.
We consider the cable (self-supporting on a 500 m cable) 13000r + Media converters $ 100 / piece + boxes, pigtails and other small things for another $ 100.
The result is about 22,000 rubles. Laying the cable is not difficult, the main thing is not to bend it too much.

el777, 2012-08-20
@el777

As I understand it, your requirements are minimal, you just need to “farm” the channel.
You buy a kilometer of optics (estimate the length yourself with a margin), on the home network forum you are looking for installers who will lay and weld inexpensively.

Konstantin Frolov, 2012-08-20
@nitro80

The conditions are not entirely clear.
You can just throw a twisted pair, breaking it into sections and connecting them with the help of switches.

lmaxximl, 2012-08-20
@lmaxximl

sufficient for file movement and 1C terminal

Nikolai Turnaviotov, 2012-08-20
@foxmuldercp

telephone? why not. copper - it is copper everywhere. you can try to take a dozen pairs and raise 2-3 links in the trunk - you can’t confuse the old pairs and sew them correctly.
But this is a tricky decision. Better in human optics.

gorl, 2012-08-20
@gorl

And how is wifi done now? There is a good option for a wifi bridge using amplified antennas - www.ubnt.com/nanostation .
I have the Internet connected at my dacha, the bridge is about 2 km away.

rgaliull, 2012-08-20
@rgaliull

in fact, you have already been answered: optics or atmospheric optics or a narrowly directed radio channel at noise-free frequencies.

lmaxximl, 2012-08-20
@lmaxximl

Thanks to all! Of course, we will not reinvent the wheel, I will seek optics. by the way, regarding Atmospheric optics in our region, no one deals with it, as our main supplier said in EMS, everyone refused it due to high costs and interference in work. I gave them verbatim. Thank you all again!

cepera_ang, 2012-08-20
@cepera_ang

Throw optics. Half a kilometer will cost 15-20 thousand + welding about 1500 * 4, if you pull on your own territory and even more so on your own (and there is nothing magical in broach, the main thing is not to make sudden movements), you will get a total of 25-30 thousand + two thousand media converters and you will have stable gigabit. For reliability, of course, it is desirable to throw the same cable in another way.

Vladimir Kivva, 2012-08-20
@zionkv

In addition to the methods described above, I can add:
1) First of all, you should scan your roofs with a wi-fi sniffer and find the least loaded channel
2) What prevents you from putting two exactly the same points on both sides and thus expanding the channel twice? I would also try to put the antennas close together so that each receiver catches both transmitters and vice versa. It is possible to use a second router if you configure it identically.

Anfinagen, 2012-08-20
@Anfinagen

Optics is unambiguous. On nag, you can type everything, for example.

lubezniy, 2012-08-20
@lubezniy

Have you considered Powerline ?

S1ashka, 2012-08-22
@S1ashka

Narrowly directed antennas along the wafer. At 400 meters, 40 Mbit will pull in any case. Under RDP, reserve a part of the channel, unscrew the number of colors by 256 or screw the citrix.
Between parts of 400 meters with no buildings at all? Let three or four repeaters and a normal twisted pair. The usual air 170m withstood without question.

polyakstar, 2012-09-07
@polyakstar

What region? 400m, for example, in St. Petersburg I will do it 2 times cheaper than you were counted

andrsharov, 2015-03-16
@andrsharov

There is another option VDSL2 . At a distance of up to 500 meters, 100 Mbps will give out. Just buy better converters for BNC connectors, and pull the RG-6 (RG-58) cable - there will be less interference. VDSL2 BNC converter entry level, e.g. Planet VC-202A costs 8000 rubles, you have 2 of these. need. well, a cable reel rg-6 500 meters will also cost 8000 thousand rubles. The advantage of this solution is that you can do everything on your own.