Date: Fri, 27 Mar 2009 15:55:42 -0700 From: Sam Leffler <sam@freebsd.org> To: David Cornejo <dcornejo@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: wds how-to? Message-ID: <49CD596E.3060609@freebsd.org> In-Reply-To: <6b8e8f4f0903271522l69751d4eu92f4c87e56387837@mail.gmail.com> References: <6b8e8f4f0903251921h285c65c6i41444d577631158d@mail.gmail.com> <49CAF716.6080105@freebsd.org> <6b8e8f4f0903271522l69751d4eu92f4c87e56387837@mail.gmail.com>
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It must be the bssid of the peer; it is used to form the 4-address frames.
Sam
David Cornejo wrote:
> That brief description was a big help in itself, thank you.
>
> One question: should the BSSID in the legacy mode be the same as the
> MAC address of the main WDS node? Or can it be a random number?
>
> thanks,
> dave c
>
> On Wed, Mar 25, 2009 at 5:31 PM, Sam Leffler <sam@freebsd.org> wrote:
>
>> David Cornejo wrote:
>>
>>> Aloha,
>>>
>>> I'm trying to get WDS running - I am working my way through the stuff
>>> in /usr/src/tools/tools/net80211/scripts, but it really only gives
>>> examples and doesn't explain the why of it - is there a more verbose
>>> how to somewhere that would help me understand this?
>>>
>>>
>> I've written nothing. You say the "why" is missing but you don't ask any
>> questions.
>>
>> There are 2 flavors of wds, legacy and dynamic. The legacy stuff is trivial
>> to setup;
>>
>> ifconfig wlan create wlandev ath0 wlanmode wds wlanbssid ... wdslegacy
>>
>> The bssid is the peer's mac address. This is just a fixed 4-address conduit
>> for frames. There must be an ap vap already created. You want to plumb the
>> vap into a bridge or assign it an ip address and route (not sure about
>> routing; I always use it bridged).
>>
>> Dynamic wds setup depends on whether you're on the ap side or the sta side;
>> the scripts are the best examples. The idea is you have a sta-ap
>> association that carries 4-address traffic. Because there's a full-blown
>> association you get discovery, roaming, and security for free. This is what
>> you'll find in Apple's ap products though they've done a bunch of work to
>> make it more production-quality.
>>
>> Note that wds is implemented above the drivers (modulo a bit of glue code).
>> ath is just one driver that supports wds, ral is another.
>>
>> Sam
>>
>>
>>
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