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

Iain Stevenson iain at iainstevenson.com
Wed Dec 17 20:06:17 UTC 2003


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
>
>
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