[Sussex] Embedded help - Is 802.11b an LLC standard under 802.3?

[Mark Harrison]

Iain,

Thanks.

Once again, owing to the big brains on the list, I can go into a meeting
looking like an expert!

Regards,

Mark

----- Original Message ----- 
From: "Iain Stevenson" <iain at iainstevenson.com>
To: "LUG email list for the Sussex Counties" <sussex at mailman.lug.org.uk>
Sent: Wednesday, December 17, 2003 8:32 PM
Subject: Re: [Sussex] Embedded help - Is 802.11b an LLC standard under
802.3?


>
> That would be: IP -> (SNAP)LLC -> 802.11 MAC.  It shouldn't need any more
> work than any other of the IEEE 802 family.  IEEE 802.15 shouldn't require
> any more work at these layers.  If programmers are claiming to need more
> work for IEEE 802.15 I would have thought it is the immaturity of this
> standard that is the real problem.
>
>   Iain
>
>
>
>
>
> --On Wednesday, December 17, 2003 8:11 pm +0000 Mark Harrison
> <Mark at ascentium.co.uk> wrote:
>
> > Iain,
> >
> > OK - that makes sense. I'm revising stuff that I understood 10+ years
ago,
> > but is now rusty.
> >
> > The _real_ question is "how does one envelope an IP packet into
> > 802.11x"...
> >
> > ... and the reason for wanting to know is that there's a need to make an
> > architectural decision between 802.11 and 802.15 for an embedded device,
> > and I want to understand whether the programmer's analysis of "work
> > required" is truth or blag :-)
> >
> > M.
> >
> > ----- Original Message -----
> > From: "Iain Stevenson" <iain at iainstevenson.com>
> > To: "LUG email list for the Sussex Counties" <sussex at mailman.lug.org.uk>
> > Sent: Wednesday, December 17, 2003 8:05 PM
> > Subject: Re: [Sussex] Embedded help - Is 802.11b an LLC standard under
> > 802.3?
> >
> >
> >>
> >> By design, the MAC layer addresses sit below the LLC layer - which is
> >> IEEE 802.2 - in all cases I know of.  IEEE has been pretty scrupulous
in
> >> maintaining that.  LLC SAP addresses are independent of MAC.
> >>
> >>   Iain
> >>
> >>
> >>
> >> --On Wednesday, December 17, 2003 6:45 pm +0000 Mark Harrison
> >> <Mark at ascentium.co.uk> wrote:
> >>
> >> > Dumb question here...
> >> >
> >> > I understand 802.3 packets. Specifically, I understand how to frame
an
> > IP,
> >> > ARP or RARP packet into 802.3 ethernet.
> >> >
> >> > My question is, how does that map to 802.11b?
> >> >
> >> > I've sort of implicitly been assuming that 802.11b is a sub-standard
of
> >> > the Data level, and sits under 802.3 LLC... This assumption has
served
> > me
> >> > to date, because I've been living up at the UDP / TCP levels and not
> >> > needed to worry....
> >> >
> >> > ... but the natural implication of this would be that 802.11b MAC
> >> > addresses are in a flat space together with 802.2. Is this actually
> >> > correct?
> >> >
> >> > The reason I ask is that I've got an interesting embedded system that
> > uses
> >> > embedded 802.11b chipsets to discuss tomorrow, and I want to ensure
> >> > that I'm keeping up with the lead architect :-)
> >> >
> >> > Regards,
> >> >
> >> > Mark
> >> >
> >> >
> >> > _______________________________________________
> >> > Sussex mailing list
> >> > Sussex at mailman.lug.org.uk
> >> > http://mailman.lug.org.uk/mailman/listinfo/sussex
> >> >
> >>
> >>
> >>
> >>
> >>
> >> _______________________________________________
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> >> Sussex at mailman.lug.org.uk
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> >>
> >>
> >
> >
> > _______________________________________________
> > Sussex mailing list
> > Sussex at mailman.lug.org.uk
> > http://mailman.lug.org.uk/mailman/listinfo/sussex
> >
>
>
>
>
>
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