[Ns-bugs] [Bug 510] NqstaWifiMac Lies About SupportsSendFrom?

Fri Feb 27 00:39:41 PST 2009

http://www.nsnam.org/bugzilla/show_bug.cgi?id=510

Aleksey Kovalenko <kovalenko at iitp.ru> changed:

           What    |Removed                     |Added
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                 CC|                            |kovalenko at iitp.ru

--- Comment #8 from Aleksey Kovalenko <kovalenko at iitp.ru>  2009-02-27 03:39:41 EDT ---
(In reply to comment #3)
> No, I mean the other way around.  I think we had already concluded in the
> mailing list that STAs cannot do bridging, only APs.  This is a limitation of
> real world, not of NS-3.
> 
In the dot11 standard exists 4-address scheme for DS-to-DS communications. The
4th address is real source address(SA) , the others as usual RA, DA,TA. In
bridging mode one  can utilize this ability of the protocol to send packet
transparently through bridging STA. It can be done by maintaining WDS table,
filled on-demand. 
About real world:  All drivers used net80211 stack( all FreeBSD wireless
subsystem, MadWifi( for Atheros  ) provide bridging functionality on the STA in
the way described above.

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