2013-09-04 - Re: [GRASE-Hotspot] Extending range

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From: rick <ri***k@ozaccess.com>
Message Hash: 6c2bcd38b6cc271118f046d57d6e43b198c1b498525fde39a73067db338c5773
Message ID: <52270A4A.3020302@ozaccess.com>
Reply To: <5225C623.5080702@radez.hr>
UTC Datetime: 2013-09-04 03:24:10 UTC
Raw Date: Wed, 04 Sep 2013 20:24:10 +1000

Raw message 

Hi Drazen,

Thank you again, for your well thought out reply.

Much appreciated.

Rick


On 03/09/13 21:21, Drazen wrote:
> Yes I guess understand your situation.
> There is no doubt, best solution is switch and 3 AP devices and run
> ethernet cable to each AP. Indoor or outdoor type of APs, depends of
> your situation there.
>
> Second option could be one AP and 2 APs acting as repeaters. This is OK
> if there is no big trafic expected at other two areas.
> Only what you need is visibility between APs.
> Improvement of above will achieve with 4 APs. 2 at the main site and 1
> AP at per remain areas. So two repeaters poiting to own main AP. This
> will ofload single AP as main source. In both case one or two APs will
> cover nearby area.
>
> Third option, putting two outdoor directional APs at the mast and orient
> them to cover other two areas. It is possible that all could be covered
> by one AP but if to many clients at the same time,  two will better
> handle the trafic.
>
> Fourth option is to use Wifi extenders over power line. I personally
> dont like these, but it is possible to solve your problem if electric
> grid is at each of 3 areas.
>
> Rgds.
> Drazen
>
>
>
>
> On 3.9.2013 13:01, rick wrote:
>> Thanks Drazen,
>>
>> I should have explained my situation a bit clearer, it may have helped,
>> though others may find your thoughtful response helpful.
>>
>> I have an establishment about 30 meters wide by 90 meters long which is
>> separated into three sections in a row, they join each other but are
>> separated by double brick walls, each area is about 23 meters by 30 meters.
>>
>> I'm needing to provide access in all three areas, and I'm just not
>> getting trough the walls.
>>
>>
>> Thank you kindly
>>
>> Rick
>>
>>
>> On 03/09/13 20:27, Drazen wrote:
>>> On 3.9.2013 10:48, rick wrote:
>>>> Hi all,
>>>>
>>>> Can someone suggest the best way to extend the range of the Grase wifi
>>>> network.
>>>>
>>>> Are repeaters or multiple access points via a switch the better option?
>>> This is the normal option. You are limited to 100m ethernet cable
>>> between switch and each AP point.
>>> You can also use better antennas on AP. This means directional antennas.
>>> Their diagram of Tx and Rx is nor circular then concentrated at narrow
>>> angle vertically and/or horizontally. Clients should be in eye of sight
>>> with AP antenna and their diagrams.
>>> For longer distances, repeater is an option combined also with
>>> appropriate antennas. With repeater you will have drop of theoretical
>>> speed by 50% in wifi channel.
>>> Better option then repeater is "link". You will need two devices acting
>>> as "link", and third device at far end connected with cable to second
>>> "link" device.
>>> It is possible to use 5GHz devices for link , you will get more speed on
>>> link up to +200Mbs and get distances up to 30 km or more.
>>>> If its multiple access points, is it as easy as plugging each access
>>>> point into a switch and a cable from the switch to the 2nd network card
>>>> in the Grase Server.?
>>> Yes. It is perfectly same setting as when connecting directly to server.
>>>> Same SSID on each access point, and separate each on a different channel?
>>> Yes, exactly. Just keep in mind to choose at least 3 channel apart
>>> between two AP if they are close to each other.
>>> And of course check first already occupied channels and their signals
>>> strength in your neighborhood. Foreign channels with weak signals at
>>> your area of coverage  are possible useful if no empty one available.
>>>> Turning off dhcp in each access ponit and turning off wds?
>>> Yes, DHPC definitely should be off. WDS depends of what are you building
>>> up as well as about the device software. Some devices need WDS to act as
>>> repeater or link.
>>> You should also assign static IP to each AP device how you can access
>>> them, to see what is going on, change setting if necessary or else. This
>>> way it is possible to access device on link segment and manage it. At
>>> link setup, network setting at each device need to be set as "bridge".
>>>
>>> I set static IPs at six of my  AP devices currently in the air. I used
>>> lower part of range: 10.1.0.2 to 10.1.0.7 . It is not a problem for
>>> grase/chilli DHCP to keep those reserved because all APs are always "ON"
>>> theoretically. Better way is to limit Grase DHCP range out of these.
>>> Well I didn't yet.
>>>
>>> I have one AP (Airlive outdoor with panel antenna 9dbi). One repater
>>> line consisting of AP with self-made 18-elements LOG-periodic antena
>>> (15dbi) and AP with panel antenna 9dbi. Also I have one 5GHz Link
>>> consisting of two Ubiquity AirGrids with parabolic antennas (25dbi) and
>>> Linksys DD-WRT 54GL router at end. This is 500 meters far location.
>>> Those LOG and Panel antennas are facing each other and they are
>>> aproximately 300meters away . It is interesting that both devices able
>>> to connect clients in own nearby because neither Tx/Rx diagram is not
>>> strictly directional. In nearby (say up to 30meters) of any directional
>>> antenna, there are always side and back RF fields which is strong enough
>>> for client's normal operation. This efect is used at the repeater end
>>> where clients are getting WiFi connection by those side emisions only,
>>> while main antenna direction is oriented to see far LOG antenna.
>>>
>>>
>>> If you need more details I will be glad to help.
>>>
>>> Regards
>>> Drazen
>>>> Thank you all...
>>>>
>>>> Rick
>>>>
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------------------
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>> ------------------------------------------------------------------------------
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>> Discover the easy way to master current and previous Microsoft technologies
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>
>
> ------------------------------------------------------------------------------
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