Wireshark · Ethereal-dev: Re: [Ethereal-dev] LWAPP Dissector

[David Frascone <dave@xxxxxxxxxxxx>]

On Friday, 29 Aug 2003, Guy Harris wrote:
> 
> On Friday, August 29, 2003, at 1:10 PM, David Frascone wrote:
> 
> Checked in.

Thanks.

> 
> >Also, I'm resubmitting my 802.11 patch to add a flag (preference) to
> >swap the word on the frame control register.  Some atheros chipsets 
> >send
> >those over lwapp with the bytes swapped.  I'm not sure why it happens,
> >but since it's been going on for over a year, I don't think it's going
> >to get fixed any time soon,
> 
> So I presume that either
> 
> 	1) LWAPP traffic goes only between access points and access routers 
> neither of which swap the word, or between access points and access 
> routers both of which swap the word;

Exactly.

> 	2) there would be interoperability problems between access points 
> 	and access routers where one swaps the word and the other doesn't;

Correct.

> 	3) there's some form of magic done by access points and/or access 
> routers to cope with that "feature".

1 and 3 are mostly correct.  Lwapp is very young, and I'm sure vendors
will get their acts together soon.  But, until they do, the little
checkbox is necessary to properly dissect the tunnelled 802.11 frames.
:(

-Dave

-- 
David Frascone

                   (A)bort, (R)etry, (P)anic?