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Wireless Networks Thread, Linking 2 Buildings.. in Technical; We have just aquired a building approx 600m from the main site.. the new building is not on the grounds ...
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    Linking 2 Buildings..

    We have just aquired a building approx 600m from the main site.. the new building is not on the grounds but across the road..

    What would the best, easiest and cheapest way of linking the buiding to the School Network..

    There is no line of sight..

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    Re: Linking 2 Buildings..

    We have 2 buildings linked by overhead fibre (8 and 16 channel)
    Though, we dont need to cross a road like you do...

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    Re: Linking 2 Buildings..

    You have a couple of options really.

    1 would be to get a couple of SDSL lines, one at each building and then run a VPN over that. This is going to be the slower solution.

    The other would be to contact someone like BT or NTL and see what they can offer in terms of installing a fibre. Yes, it'll likely require digging up the road, but you'll then have a proper link. This solution could be quote expensive though.

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    Re: Linking 2 Buildings..

    Quote Originally Posted by localzuk
    You have a couple of options really.

    1 would be to get a couple of SDSL lines, one at each building and then run a VPN over that. This is going to be the slower solution.

    The other would be to contact someone like BT or NTL and see what they can offer in terms of installing a fibre. Yes, it'll likely require digging up the road, but you'll then have a proper link. This solution could be quote expensive though.
    It's not just a road... its 2 blocks of 3 floor flats and a couple of houses in the way as well.. :-(

    All we want to run in the new building is about 5 PC's

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    Re: Linking 2 Buildings..

    have the kids do it for you perfect project for them me thinks. They could then cover some of the units from maths, ICT, DT and science.

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    Re: Linking 2 Buildings..

    We used a wireless solution for our music block, but that was only a sub 200m line-of-sight job. I believe my uni used directional high-gain antennas and some specialist cisco kit to connect the accomodation block in town to the uni over about 1/2 a mile, but I see serious £££ in that

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    Re: Linking 2 Buildings..

    What do you want to use those 5 machines for is it absolutely vital they have a network connection?

    How about an adsl line and some kind of vpn back to your main site?

    Ben

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    Re: Linking 2 Buildings..

    For 5 machines, I should think the bandwidth provided by a directional wireless link should (just about) be okay. You don't have to use specialist kit - many standard wireless cards have detachable antennas that you can replace with directional antennas. You can buy point-to-point wireless/wired ethernet converters for about £50 each (you'll need two, obviously). For the ultimate in DIY cheapness you can find instructions on the Internet to build your own antenna from an old Pringles packet, but these days you can buy them ready-made off eBay (search for "cantenna" or "yagi").

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    Re: Linking 2 Buildings..

    Quote Originally Posted by Grommit
    We have just aquired a building approx 600m from the main site.. the new building is not on the grounds but across the road..

    What would the best, easiest and cheapest way of linking the buiding to the School Network..

    There is no line of sight..
    I certainly think installing a fibre run isn't going to be the cheapest but would be the most effective solution. They should be able to route through existing underground facilities without digging any holes but it would probably be costly. You don't have line of site so that would rule out a cheap solution such as free space optics.

    Wireless mesh could be a possibility but I think that would require an intermediate hop (to overcome line of sight)

    How about PTP WiMax ? Cisco don't do WiMax :cry: but there are plenty of vendors whose equipment doesn't require Line of sight so long as you've got NLOS.

    Or an outdoor 802.11 point-to-point bridged wireless solution. Again would need some line of sight.

    If you really are that obstrcuted between sited then the SDSL VPN option could well be your best bet, but don't forget depending on distance from the exchange you might not be able to exceed 512kbps up and down. Which probably isn't a problem for 5 pc's but is a lot to pay for not a lot of bandwidth.

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    Re: Linking 2 Buildings..

    As he said, he doesn't have line of sight, this means any wireless solution will be unreliable at best.

    For that few a number of machines, I would go with an SDSL line and a VPN.

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    Re: Linking 2 Buildings..

    Quote Originally Posted by dhicks
    For 5 machines, I should think the bandwidth provided by a directional wireless link should (just about) be okay. You don't have to use specialist kit - many standard wireless cards have detachable antennas that you can replace with directional antennas. You can buy point-to-point wireless/wired ethernet converters for about £50 each (you'll need two, obviously). For the ultimate in DIY cheapness you can find instructions on the Internet to build your own antenna from an old Pringles packet, but these days you can buy them ready-made off eBay (search for "cantenna" or "yagi").

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    For just a few hundred pounds he can get a dedicated outdoor bridge/antenna or an indoor AP with an external Yagi or directional antenna for less. He is trying to link two buildings!!! afterall so I'm sure he can find the cost justification without having to go DIY or the cheap as chips route particularly as most schools have spent small fortunes on costly fiber backbones. Plus, it's likely once a suitable link is in place there'll be more than 5 PC's wanting to connect back to the main site He should look at future capacity. A Cisco bridge/AP solution is cheap by comparison with such projects.

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    Re: Linking 2 Buildings..

    how big is the building, how many machines do you think would/could be used in the building? If you are going to be using more than 5 machines in the future then i would just try go for fiber.

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    Re: Linking 2 Buildings..

    Quote Originally Posted by torledo
    Quote Originally Posted by dhicks
    For 5 machines, I should think the bandwidth provided by a directional wireless link should (just about) be okay. You don't have to use specialist kit - many standard wireless cards have detachable antennas that you can replace with directional antennas. You can buy point-to-point wireless/wired ethernet converters for about £50 each (you'll need two, obviously). For the ultimate in DIY cheapness you can find instructions on the Internet to build your own antenna from an old Pringles packet, but these days you can buy them ready-made off eBay (search for "cantenna" or "yagi").

    --
    David Hicks
    For just a few hundred pounds he can get a dedicated outdoor bridge/antenna or an indoor AP with an external Yagi or directional antenna for less. He is trying to link two buildings!!! afterall so I'm sure he can find the cost justification without having to go DIY or the cheap as chips route particularly as most schools have spent small fortunes on costly fiber backbones. Plus, it's likely once a suitable link is in place there'll be more than 5 PC's wanting to connect back to the main site He should look at future capacity. A Cisco bridge/AP solution is cheap by comparison with such projects.
    Can I ask why people are suggesting wireless when he stated there is no line of sight? This is simply a poor solution if line of sight is not available as he would need to get agreements with buildings in between in order to mount repeaters - which adds to latency.

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    Re: Linking 2 Buildings..

    How far away from the phone exchange are you? BT will let you rent a direct piece of copper between the 2 buildings (via the phone exchange) that you can then connect your own SDSL equipment too at both ends, creating a private circuit. Data speeds aren't guaranteed, but provided your not miles from the exchange it should be fine. - Last place i worked for had a 2mb line running over it reliably for 2 years. Rental was around £700 a year I believe.

    Steve

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    Re: Linking 2 Buildings..

    Quote Originally Posted by localzuk
    Quote Originally Posted by torledo
    Quote Originally Posted by dhicks
    For 5 machines, I should think the bandwidth provided by a directional wireless link should (just about) be okay. You don't have to use specialist kit - many standard wireless cards have detachable antennas that you can replace with directional antennas. You can buy point-to-point wireless/wired ethernet converters for about £50 each (you'll need two, obviously). For the ultimate in DIY cheapness you can find instructions on the Internet to build your own antenna from an old Pringles packet, but these days you can buy them ready-made off eBay (search for "cantenna" or "yagi").

    --
    David Hicks
    For just a few hundred pounds he can get a dedicated outdoor bridge/antenna or an indoor AP with an external Yagi or directional antenna for less. He is trying to link two buildings!!! afterall so I'm sure he can find the cost justification without having to go DIY or the cheap as chips route particularly as most schools have spent small fortunes on costly fiber backbones. Plus, it's likely once a suitable link is in place there'll be more than 5 PC's wanting to connect back to the main site He should look at future capacity. A Cisco bridge/AP solution is cheap by comparison with such projects.
    Can I ask why people are suggesting wireless when he stated there is no line of sight? This is simply a poor solution if line of sight is not available as he would need to get agreements with buildings in between in order to mount repeaters - which adds to latency.
    pluss wireless is not the most securable form of transmitting data.

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