How to connect 2 offices in one local area network?

asgard882013-05-20 11:02:56

Computer networks

asgard88, 2013-05-20 11:02:56

Good afternoon, there was a need to connect 2 office buildings into a single network. Each has its own local network, with 2-3 PCs. The distance between office buildings is ~250 meters. There is no internet in both buildings. Tell me how best to do this so that you can buy the equipment once, set it up and forget it.

The only idea so far is to put 2 directional antennas connected to 2 wifi routers in repeater bridge mode. But I think the performance will drop significantly and there will be no stability. Laying a cable between buildings is an extreme option, it is more likely to be torn or damaged.

PS I need a cheaper option.

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10 answer(s)

Sergey Petrikov, 2013-05-20
@RicoX

~ 250 meters of optics, 2 welds, 2 boxes, 1 optical patch cord 3 meters cut in half and welded in the box + 2 media converters, fasteners and optics extension + other little things = the cheapest and most reliable option. Contact any provider in the area, they will take $ 200-300 per day. Normal radio equipment will cost you more and you will suffer with it.

Sergey Pribylskiy, 2013-05-20
@ASP

ubiquiti nanobridge m5 is a great option for connecting two offices. Issue price 6.000 per set. Used. No problem

0000168, 2013-05-20
@0000168

There was an experience of building a bridge on such dlink antennas and simple access points.
Line of sight, distance 800 meters. There was no interference.
Deployment time was half a day. Works like a clock for 5 years.

smartlight, 2013-05-20
@smartlight

Twisted pair and a pair of shDSL modems provide speeds up to 5Mbps

asgard88, 2013-05-21
@asgard88

Thank you all, now let's try to take equipment from d-link for testing and see how the radio channel behaves, as far as I know, the air is generally clean there, because everything is outside the city

las68, 2013-05-22
@las68

As you say, production. Pull the optics, it is not afraid of anything - it is spark-and-explosion-proof, insensitive to electrical pickups from machines and mechanisms. The cable is self-supporting, with a steel core inside, so that it can be thrown directly on the pillars / walls of buildings on suspensions. Fasten it at such a height that the machines do not tear. Transceivers can be supplied Chinese - the price for them is $ 200. Contact a specialized office to help you, and the radio channel should be used where other methods would be impossible - for example, two banks of the river :)

asgard88, 2013-05-20
@asgard88

Is it worth pulling optics between 2 buildings for the sake of 6 pc?

Sages, 2013-05-20
@Sages

A couple of these. Works on 120/120Mbit

xn--h1aafbgonr.xn--p1ai/katalog/vsepogodnogo_ispolneniya_s_antennoy/rbsxtg_2hnd/
Yes, actually there are a bunch of options on the link. It's just the first thing that came to mind with a kind word.

mayorovp, 2013-05-21
@mayorovp

I may be staking right now, but check what network services are in the networks being combined! Particular attention is on DHCP, DNS, WINS and AD. Of course, 2-3 computers are not the case when they are needed, but someone could still set them up on their own initiative.
If, for example, DHCP is configured on one network and not on the second, then after the bridge appears, new computers on the second network will successfully receive addresses from the first. And in case of problems with the radio channel, they will stop working, which will happen in 2018, just when the high authorities arrive at the facility ...

asgard88, 2013-05-21
@asgard88

This is all true, of course, but the network is organized on the basis of a production facility with spaced buildings on a certain site. Therefore, in the future, you still have to use the radio channel to connect individual nodes. I think this is just a good chance for me to work out the technology.