OLBC HT AP detected - enable protection

Jouni Malinen j at w1.fi
Sat Mar 30 12:10:40 EDT 2013


On Tue, Mar 26, 2013 at 01:05:19PM -0700, Ben Greear wrote:
> When trying to run HT40 on channel 149, we see this message in the logs,
> and stations cannot scan the AP (hostapd is running though).
> 
> 31.087832: OLBC HT AP detected: c0:c1:c0:38:e1:cb - enable protection

Could you please clarify what you mean by stations not being able to
scan the AP?

> The c0:c1... AP in question is running in 2.4Ghz band.
> 
> If we disable HT40 then it comes up fine.
> 
> Is this expected?

No. The part of detecting non-HT overlap is supposed to apply only for
overlapping channels and is fixed here:
http://w1.fi/gitweb/gitweb.cgi?p=hostap.git;a=commitdiff;h=a5f61b2b87ceffec517e3baf531a466940dbd0b7

The part of stations not being able to scan the AP sounds strange, so I
would like to understand what you meant with that.

-- 
Jouni Malinen                                            PGP id EFC895FA


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