RE: [smartBridges] Smartbridge APPO max client associations?

[Peter Cartwright]

Title: RE: [smartBridges] Smartbridge APPO max client associations?

The reason for RTS is the "hidden node" problem.  By definition, the AP can see all of the "clients" and thus knows if any of them are transmitting.  However, two clients may not be able to "see" each other and thus could both transmit at the same time causing a mess at the AP.  To get round this, you can set the RTS on the clients so that they ask for permission before sending data.  The AP does not need to do this as it "hears" all the clients.

 

For our network we set the RTS to zero (ie always ask for permission) for every airbridge, but leave it switched off for the APs.

 

Peter

 

Loop Scorpio Ltd
providers of Ledbury Broadband and Highnam Broadband
www.ledburybroadband.co.uk
www.highnambroadband.co.uk

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of phantam
Sent: 31 July 2003 17:52
To: '[EMAIL PROTECTED]'
Subject: RE: [smartBridges] Smartbridge APPO max client associations?

Ok so frag on ap could help? But rts doesn't how come what happens if u change the rts on the ap?

Chris

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Thursday, July 31, 2003 1:20 PM
To: [EMAIL PROTECTED]

Just be aware that RTS needs to be set on the client devices.  Don't set it on
the AP.  Leave the AP at 2346 (RTS disabled).

Craig

Quoting Kevin Summers <[EMAIL PROTECTED]>:

>
> In a crowded environment RTS being lowered can help because
> it allows a client radio to send a Request To Send to the AP
> and the AP tells everyone else to shut up while the client
> sends off it's packets. Something like 1024 would be a good
> test setting to start with just to see if it would help.
>
> The Frag Threshold tells the AP to break up the packets when
> the exceed the specified size. That causes more (but smaller)
> packets to be sent through the air, allowing for more clients
> to get data through.
>
> Typically you want to only adjust one at a time to see which
> one is going to be that little bit of "Magic" for your particular
> situation.
>
> Kevin Summers
> KISTech Internet Services Inc.
> www.kistech.com
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Eric Helm
> Sent: Thursday, July 31, 2003 9:29 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [smartBridges] Smartbridge APPO max client associations?
>
>
> RTS and Frag are both set at 2346... not sure what this does or means? any
> explanation and example of what changing these values does would be great.
>
> Thanks,
> Eric
> ----- Original Message -----
> From: phantam
> To: '[EMAIL PROTECTED]'
> Sent: Thursday, July 31, 2003 11:21 AM
> Subject: RE: [smartBridges] Smartbridge APPO max client associations?
>
>
> 35 should work matters if the RTS and frag are all tweaked or are they all
> talking at the same time? The clients that is. I have about 28 on my pop's
> and we had swore at one point not to go above 25 on our site hence we're
> upgrading personally we don't use splitters its another point of failure
> but
> it should work with the amp none the less. It really depends on use the
> 11mb
> RF is aggregate and shared so if everyones on or all the radios are talking
> or evne the majority there going to go nuts.
> Chris
> -----Original Message-----
> From: Eric Helm [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, July 31, 2003 12:04 PM
> To: [EMAIL PROTECTED]
> What is the max client associations on an APPO without comprimising the
> performance of the throughput?
> I have 1 APPO that has 35 clients on it, and 1 APPO that has only 5
> clients... the lesser of the two can get 2 Mbps throuput, which is what we
> are feeding it from the backhaul, however on the APPO with 35 clients, the
> max throughput I can get is about 700 to 800 Kbps.  The setup is as
> follows:
> 1 APPO --> .5 Watt Amp --> Splitter --> 2 - 120 degree sector antennas.
> 1 APPO --> 1 - 120 degree sector antenna
> The APPO experiencing throughput problems it the one that has the splitter
> on it.. could this be causing the problem? We just purchased the WISP that
> setup the APPOs and I am not opposed to adding a 3rd APPO if that would be
> a
> viable solution, but I am concerned if 35 clients is going to hinder the
> performance that much.
> Thanks,
> Eric
>
>
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