[Bluez-devel] PAND + DUND

[Bluez-devel] PAND + DUND

[Gavin Glynn]

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Hi All

 

I am trying to build an access point that supports both PAN and LAP
profiles. I was able to follow the instructions to create a PAND access
point using the Ethernet bridge technique
(http://bluez.sourceforge.net/contrib/HOWTO-PAN). I have searched all around
the web for instructions for incorporating DUND into this configuration, and
the best I have found is an out of date article from Ling-Jyh Chen
(http://www.cs.ucla.edu/~cclljj/interest/notes/bluez/pand_dund.html). Are
there any instructions for configuring the recent versions of Bluez to
support multiple Bluetooth devices using PAN and / or LAP? Any assistance
would be appreciated.

 

Regards

 

 

Gavin Glynn :-)

PS: I have been really impressed with the depth in the current
implementation of BlueZ and have managed to construct some interesting
software. As a developer, I find the lack of the formal documentation
describing the uses of the BlueZ utilities and the API available in the
BlueZ libraries a real issue. If the BlueZ implementation is to become
universally accepted by the development community, the BlueZ community will
need to work on this issue.

 

 


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Re: [Bluez-devel] PAND + DUND

[Marcel Holtmann]

Hi Gavin,

no cross posting !!!

> I am trying to build an access point that supports both PAN and LAP
> profiles. I was able to follow the instructions to create a PAND
> access point using the Ethernet bridge technique
> (http://bluez.sourceforge.net/contrib/HOWTO-PAN). I have searched all
> around the web for instructions for incorporating DUND into this
> configuration, and the best I have found is an out of date article
> from Ling-Jyh Chen
> (http://www.cs.ucla.edu/~cclljj/interest/notes/bluez/pand_dund.html).
> Are there any instructions for configuring the recent versions of
> Bluez to support multiple Bluetooth devices using PAN and / or LAP?
> Any assistance would be appreciated.

you might not wanna hear it, but the DUN profile is deprecated (even by
the Bluetooth SIG). However to integrate it into your bridge you need to
play some tricks with pppd. It is all about pppd and this is not going
to be very easy.

> PS: I have been really impressed with the depth in the current
> implementation of BlueZ and have managed to construct some interesting
> software. As a developer, I find the lack of the formal documentation
> describing the uses of the BlueZ utilities and the API available in
> the BlueZ libraries a real issue. If the BlueZ implementation is to
> become universally accepted by the development community, the BlueZ
> community will need to work on this issue.

Since this is open source, feel free to do something about it. Write
documentation. I invite everybody to construct a good manual.

Regards

Marcel




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Re: [Bluez-devel] PAND + DUND

[David Woodhouse]

On Fri, 2005-09-09 at 01:34 +0200, Marcel Holtmann wrote:
> you might not wanna hear it, but the DUN profile is deprecated (even by
> the Bluetooth SIG). However to integrate it into your bridge you need to
> play some tricks with pppd. It is all about pppd and this is not going
> to be very easy.

That's sad. DUN allows for compression; Unless I'm mistaken, PAN does
not.

I keep intending to write a pppd plugin and kernel module to do
ppp-over-rfcomm directly instead of using the tty. Haven't quite got
round to it yet though :)

-- 
dwmw2




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September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
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Re: [Bluez-devel] PAND + DUND

[Marcel Holtmann]

Hi David,

> > you might not wanna hear it, but the DUN profile is deprecated (even by
> > the Bluetooth SIG). However to integrate it into your bridge you need to
> > play some tricks with pppd. It is all about pppd and this is not going
> > to be very easy.
> 
> That's sad. DUN allows for compression; Unless I'm mistaken, PAN does
> not.
> 
> I keep intending to write a pppd plugin and kernel module to do
> ppp-over-rfcomm directly instead of using the tty. Haven't quite got
> round to it yet though :)

the bluez-utils package still contains ppporc, but the kernel PPP and
pppd sucks and so PPP over RFCOMM socket directly is almost impossible
without tricks.

Regards

Marcel




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SF.Net email is Sponsored by the Better Software Conference & EXPO
September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA
Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
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