[Prism54-devel] Re: Spurious disassociations in prismGT STA <-> prism2.5 AP setup

vda at port.imtp.ilyichevsk.odessa.ua vda
Sun Feb 8 12:18:47 PST 2004

On Sunday 08 February 2004 21:32, Jouni Malinen wrote:
> On Sun, Feb 08, 2004 at 07:53:11PM +0200, vda at port.imtp.ilyichevsk.odessa.ua wrote:
> > t.raw:
> > # tcpdump -nleieth1 -s2000 -vvv -w t.raw ether host 0:4:e2:64:15:e5
> This does not include all the needed frames (ACKs are missing). In other
> words, no filtering should be used to get useful dump file for debugging
> this kind of problem. Anyway, it looks like there are quite a bit of
> retransmit needed to send some of Probe Responses, so some kind of
> interoperatiblity issue at low level is possible (invalid calibration of
> the radios etc.). What's the distance between the AP and the STA? Could
> you try using another channel (e.g., 1 or 6)?


The distance is only 1 meter.
When I tested two prism54 cards, they were able to do
2.4 megabytes/s at this distance with small antennas.
For testing I am artificially lowering signal level
by not using proper antenna at AP. I just let it
work with regular antenna on the roof.

I monitor signal strength on AP by looking at
last_rx: silence=156 signal=NNN
Problem is evident when signal <=190.

I will capture unfiltered dump tonight. Right now,
it will be considerably diluted by traffic
to/from other STAs.

> <jkmaline at cc.hut.fi>:
> does not like recipient.
> Remote host said: 550 5.7.1 <jkmaline at cc.hut.fi>... stopped by RSS.
> See <URL:http://work-rss.mail-abuse.org/cgi-bin/nph-rss?query=>.
> has been an open relay abused by spammers
> Giving up on

It is not open relay anymore, at least for several months.
I contacted folks at work-rss.mail-abuse.org.

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