connect 5 points via wireless APs

hi all,
i need to create a small wireless lan like this

pc1 - - - pc2 - - - pc3 - - - pc4 --- pc6
i
pc5

- every pc is in a different building

- every building is about 400 meters from his nearest neighbour

- i tested the various wireless links (with an AP and a usb wireless
dongle, plus homebuilt antennas) and they work well (48 mbps, FTP
transfer rate about 2000KBsec )

- i cant use usb dongles in the project, just APs.

THE QUESTION IS :
how many AP do i need?
what speed can i achieve from pc1 to pc6?

(THANKS!!)

[POSTED TO alt.internet.wireless - REPLY ON USENET PLEASE]

In <(E-Mail Removed)> on Mon, 01 May 2006 19:09:51
+0200, marcos <(E-Mail Removed)> wrote:

>hi all,
>i need to create a small wireless lan like this
>
>pc1 - - - pc2 - - - pc3 - - - pc4 --- pc6
> i
> pc5
>
>- every pc is in a different building
>
>- every building is about 400 meters from his nearest neighbour
>
>- i tested the various wireless links (with an AP and a usb wireless
>dongle, plus homebuilt antennas) and they work well (48 mbps, FTP
>transfer rate about 2000KBsec )
>
>- i cant use usb dongles in the project, just APs.
>
>THE QUESTION IS :
>how many AP do i need?

Depends on whether a given antenna can cover more than one building.

From your diagram I'd say:
pc1: USB dongle to pc2
pc2: At least two access points, client bridge to pc3, and host for pc1
and pc5 if one antenna works, otherwise separate hosts for pc1 and pc5
pc3: Host access point for pc2, and client bridge to pc4
pc4: Host access point for pc3, and client bridge to pc6
pc5: USB dongle to pc2
pc6: Master access point for pc4 and all others through pc4

>what speed can i achieve from pc1 to pc6?

If done properly, the speed of the slowest intervening link, other wireless
traffic permitting.

--
Best regards, SEE THE FAQ FOR ALT.INTERNET.WIRELESS AT
John Navas <http://en.wikibooks.org/wiki/FAQ_for_alt.internet.wireless>

>>i need to create a small wireless lan like this
>>pc1 - - - pc2 - - - pc3 - - - pc4 --- pc6
>> i
>> pc5
>>- i cant use usb dongles in the project, just APs.


>>how many AP do i need?
>Depends on whether a given antenna can cover more than one building.
>From your diagram I'd say:
>pc1: USB dongle to pc2
>(...)

thanks for fast replying )
pc2 can cover 2 buildings (1 and 3) with one AP, by putting 2
directional antennas on it .

as told before , i can't use usb dongles in this project. Just APs.

>>what speed can i achieve from pc1 to pc6?
>If done properly, the speed of the slowest intervening link, other wireless
>traffic permitting.

in other words, wireless bridging itself does not interfere in
speed, am i right?

marco

marcos wrote:
>>> i need to create a small wireless lan like this
>>> pc1 - - - pc2 - - - pc3 - - - pc4 --- pc6
>>> i
>>> pc5
>>> - i cant use usb dongles in the project, just APs.
>
>
>>> how many AP do i need?
>
> in other words, wireless bridging itself does not interfere in
> speed, am i right?
>
> marco

Just out of curiosity, any cables/conduits between buildings? Did that on my
ranch in idaho (house/garage/barn/guest house), had multi-conductor cables
(for phone, network, intercom, cable tv etc) and electrical cables between
em, just used multiple ap's, all with the same ssid, connected over 4 of the
20 conductors in the underground cable. Lets me wander around the 20 acres
with my wireless notebooks and pda's.

PS, wireless bridging will interfere with the speed, wired didn't, and the
bonus was having the cables underground when bad weather hit.

[POSTED TO alt.internet.wireless - REPLY ON USENET PLEASE]

In <(E-Mail Removed)> on Tue, 02 May 2006 11:23:51
+0200, marcos <(E-Mail Removed)> wrote:

>>>i need to create a small wireless lan like this
>>>pc1 - - - pc2 - - - pc3 - - - pc4 --- pc6
>>> i
>>> pc5
>>>- i cant use usb dongles in the project, just APs.
>
>>>how many AP do i need?
>>Depends on whether a given antenna can cover more than one building.
>>From your diagram I'd say:
>>pc1: USB dongle to pc2
>>(...)
>
>thanks for fast replying )
>pc2 can cover 2 buildings (1 and 3) with one AP, by putting 2
>directional antennas on it .

Are you sure? If so, then.

>as told before , i can't use usb dongles in this project. Just APs.

Sorry -- misread that. Then:
pc1: Client bridge to pc2
pc2: Client bridge to pc3, and host access point for pc1 and pc5
pc3: Host access point for pc2, and client bridge to pc4
pc4: Host access point for pc3, and client bridge to pc6
pc5: Client bridge to pc2
pc6: Master access point for pc4

>>>what speed can i achieve from pc1 to pc6?
>>If done properly, the speed of the slowest intervening link, other wireless
>>traffic permitting.
>
>in other words, wireless bridging itself does not interfere in
>speed, am i right?

Right *if* there is no interference between the various legs, by means of
directional antennas and/or non-overlapping channels (1, 6, 11).

--
Best regards, SEE THE FAQ FOR ALT.INTERNET.WIRELESS AT
John Navas <http://en.wikibooks.org/wiki/FAQ_for_alt.internet.wireless>

[POSTED TO alt.internet.wireless - REPLY ON USENET PLEASE]

In <(E-Mail Removed)> on Tue, 2 May 2006 02:59:23 -0700, "Peter
Pan" <(E-Mail Removed)> wrote:

>PS, wireless bridging will interfere with the speed, wired didn't, and the
>bonus was having the cables underground when bad weather hit.

Wireless *bridging* with two access points won't interfere with speed if the
two wireless legs are non-interfering, by means of directional antennas or
non-overlapping channels (1, 6, 11). Perhaps you're thinking of wireless
*repeating*, which does interfere with speed.

--
Best regards, SEE THE FAQ FOR ALT.INTERNET.WIRELESS AT
John Navas <http://en.wikibooks.org/wiki/FAQ_for_alt.internet.wireless>

>>i need to create a small wireless lan like this
>>pc1 - - - pc2 - - - pc3 - - - pc4 --- pc6
>> i
>> pc5
>>- i cant use usb dongles in the project, just APs.
>>how many AP do i need?

john Navas replied:
>pc1: Client bridge to pc2
>pc2: Client bridge to pc3, and host access point for pc1 and pc5
>pc3: Host access point for pc2, and client bridge to pc4
>pc4: Host access point for pc3, and client bridge to pc6
>pc5: Client bridge to pc2
>pc6: Master access point for pc4

so the answer is
pc1: 1 AP (Client bridge to pc2)
pc2: 2 (Client bridge to pc3, and host ap for pc1 and pc5)
pc3: 2 (Host access point for pc2, and client bridge to pc4)
pc4: 2 (Host access point for pc3, and client bridge to pc6)
pc5: 1 (Client bridge to pc2)
pc6: 1 (Master access point for pc4)
TOTAL : 9 APs

thanks!!!

[POSTED TO alt.internet.wireless - REPLY ON USENET PLEASE]

In <(E-Mail Removed)> on Tue, 02 May 2006 20:01:55
+0200, marcos <(E-Mail Removed)> wrote:

>>>i need to create a small wireless lan like this
>>>pc1 - - - pc2 - - - pc3 - - - pc4 --- pc6
>>> i
>>> pc5
>>>- i cant use usb dongles in the project, just APs.
>>>how many AP do i need?
>
>john Navas replied:
>>pc1: Client bridge to pc2
>>pc2: Client bridge to pc3, and host access point for pc1 and pc5
>>pc3: Host access point for pc2, and client bridge to pc4
>>pc4: Host access point for pc3, and client bridge to pc6
>>pc5: Client bridge to pc2
>>pc6: Master access point for pc4
>
>so the answer is
>pc1: 1 AP (Client bridge to pc2)
>pc2: 2 (Client bridge to pc3, and host ap for pc1 and pc5)
>pc3: 2 (Host access point for pc2, and client bridge to pc4)
>pc4: 2 (Host access point for pc3, and client bridge to pc6)
>pc5: 1 (Client bridge to pc2)
>pc6: 1 (Master access point for pc4)
>TOTAL : 9 APs

Not necessarily. An access point isn't necessarily usable as a client bridge.
You need to be sure that you can configure them as needed.

--
Best regards, SEE THE FAQ FOR ALT.INTERNET.WIRELESS AT
John Navas <http://en.wikibooks.org/wiki/FAQ_for_alt.internet.wireless>