problems with ath0 "no carrier" on freebsd-current

Sam Leffler sam at errno.com
Tue Jan 4 09:35:44 PST 2005


Jeff Stockett wrote:
>> This may sound stupid, but it happened to me, too.  Did you 'ifconfig
>> ath0 up'?  What is the output of 'ifconfig ath0'?
> 
> 
> Yes, the interface is up (I learned that requirement early on).  I 
> should have posted that though.  Hopefully Sam or one of the other 
> developers will see my original message and help.
> 
> ath0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>        inet6 fe80::20b:6bff:fe34:1b23%ath0 prefixlen 64 scopeid 0x2
>        ether 00:0b:6b:34:1b:23
>        media: IEEE 802.11 Wireless Ethernet autoselect mode 11g (DS/1Mbps)
>        status: no carrier
>        ssid "linksys"
>        authmode OPEN privacy OFF txpowmax 54
> 

I've seen nothing that would help me diagnose the problem.  Try building 
the 80211debug tool from src/tools/tool/ath then do

80211debug scan+assoc+auth

and bring the interface up (this is roughly equivalent to ifconfig ath0 
debug but 80211debug is much more useful for controlling the debug msgs 
in the 802.11 layer).  The console log msgs should provide enough 
information to tell you what's going on.

	Sam


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