Subject: RE: ifconfig vs wlanctl bssid
To: 'Greg Troxel' <gdt@ir.bbn.com>
From: Konstantin KABASSANOV <Konstantin.Kabassanov@lip6.fr>
List: tech-net
Date: 10/25/2005 09:35:06
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Greg,

Thanks for your reply. Of course I sent only a part of the wlanctl =
results,
the part concerning this "strange" behaviour. I agree of course with =
your
definition of BSSID, but I still don't understand why wlanctl must =
report a
bssid address created from the mac address of this node. The real bssid
comes from another node:

ath0: mac 00:02:6f:20:f7:e7 bss 02:02:6f:20:f7:e7
        node flags 0001<bss>
        ess <TEST123>
        chan 36 freq 5180MHz flags 0140<ofdm,5GHz>
        capabilities 0402<ibss,short slot-time>
        beacon-interval 100 TU tsft 5222517 us
        rates [*6.0] 9.0 *12.0 18.0 *24.0 36.0 48.0 54.0
        assoc-id 0 assoc-failed 0 inactivity 300s
        rssi 60 txseq 6384 rxseq 32
  =20
Konstantin


> -----Message d'origine-----
> De=A0: Greg Troxel [mailto:gdt@ir.bbn.com]
> Envoy=E9=A0: mardi 25 octobre 2005 02:25
> =C0=A0: Konstantin KABASSANOV
> Cc=A0: tech-net@NetBSD.org; current-users@NetBSD.org
> Objet=A0: Re: ifconfig vs wlanctl bssid
>=20
> BSSID is formed from the MAC address of the station that creates it.
> For infrastructure mode, this is typically the same as the mac address
> of hte AP.  For IBSS mode (which is what mediaopt 'adhoc' really
> means), the BSSID is formed by xoring 20:00:00:00:00:00 with the MAC
> address.  So wlanctl reports a node for the interface's own address,
> but not one for the bss (flags 0001), which is odd - did you omit
> that?
>=20
> ath0 ifocnfig shows both address and bssid.  This all looks fine.
>=20
> wlanctl is reporting the rate set for the node.  6 is perhaps the rate
> chosen by the rate control algorithm, which in this node's case is
> probably not used, or if on the bss node entry perhaps the rate used
> for multicast traffic.
>=20
> --
>         Greg Troxel <gdt@ir.bbn.com>


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