Re: Wireless

On Sat, Nov 28, 2009 at 12:52 PM, Peter Meyer <[email protected]> wrote:
>
> Hi Josh,
>
> thanks for the fast reply. And here are some anwsers of your question. At first the trace after setting the new debugging object.
>
> Waiting for link-up on net0...
> 802.11 0xa0cfc found network ME (00:1f:3f:17:49:5e)
> 802.11 0xa0cfc authenticating with method 0
> 802.11 0xa0cfc cannot handle spectrum managed network
> 802.11 0xa0cfc association failed (state=0100): Error 0x371f6003
> This message repeats endles.
>
> As Accesspoint acts a Telekom Speedport W 503 V. See http://hilfe.telekom.de/hsp/cms/content/HSP/de/3388/theme-2000178/theme-66139021/theme-66140341/theme-77824530 for german documentation and sourcecode (last link called Quellcode). WLAN is configured to support 802.11n and max speed 300Mbit/s. I'll change this settings to 802.11b+g and try it again. There was something about 802.11n at the Etherboot-Wiki.

The 802.11n could explain it. In many jurisdictions, transmissions on
the 5.4GHz band have to use "spectrum management" checking to make
sure they're not interfering with radar signals and such. 802.11b/g
uses 2.4GHz, which usually doesn't have such issues.

It's also possible gPXE is being overzealous here, and that since we
use 802.11g, the router would let us connect without spectrum
management even though it supports it. You can remove lines 1028-1032
from gPXE src/net/80211/net80211.c:

        if ( capab & IEEE80211_CAPAB_SPECTRUM_MGMT ) {
                DBGC ( dev, "802.11 %p cannot handle spectrum managed "
                       "network\n", dev );
                return -ENOSYS;
        }

and see if it works. If so, please let me know so I can submit this as a patch.

-- Josh

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