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Dr. Kai Godehusen
2004-02-22, 06:05
Hi *,

some days ago I reported here about my Squeezebox having problems to
connect to my 3com access point (AccessPoint 2000). The squeezebox
resets itself several times during the inital connection process, or lost
connection right after obtaining the IP address. Once it got a stable
connection it was running perfectly for may hours.
I thought it might be the 128-bit WEP that caused this - till today. I
just saw on my wireless laptop that when the Squeezebox is having this
connetion troubles the signal strength of the AP is fluctuating between
zero and full strength. That brought me to the idea that the automatic
determination of the best WLAN channel might be the source of problems.

I just fixed the channel on my AP to 11 and the troubles went away! :-)

That brings me to an important question: the Squeezebox uses 11 WLAN
channels (US specification) - right? But here in Europe we've got 13
channels. Can it be that this leads to troubles during negotiation of the
best channel to use?

Cheers
Kai

seanadams
2004-02-23, 09:26
Kai,

This is really interesting. I don't have an answer OTOH as to why
changing the AP's channel would make a difference like that.

Anyway, Squeezebox is configured with the right wireless card for
wherever we ship it. If you look at the last character of the serial
number on the bottom, it will indicate for which regulatory domain the
wireless interface is configured:

A America
E Europe
I Israel
J Japan
0 No wireless interface




On Feb 22, 2004, at 5:05 AM, Dr. Kai Godehusen wrote:

> Hi *,
>
> some days ago I reported here about my Squeezebox having problems to
> connect to my 3com access point (AccessPoint 2000). The squeezebox
> resets itself several times during the inital connection process, or
> lost
> connection right after obtaining the IP address. Once it got a stable
> connection it was running perfectly for may hours.
> I thought it might be the 128-bit WEP that caused this - till today. I
> just saw on my wireless laptop that when the Squeezebox is having this
> connetion troubles the signal strength of the AP is fluctuating between
> zero and full strength. That brought me to the idea that the automatic
> determination of the best WLAN channel might be the source of problems.
>
> I just fixed the channel on my AP to 11 and the troubles went away! :-)
>
> That brings me to an important question: the Squeezebox uses 11 WLAN
> channels (US specification) - right? But here in Europe we've got 13
> channels. Can it be that this leads to troubles during negotiation of
> the
> best channel to use?
>
> Cheers
> Kai
>

Dr. Kai Godehusen
2004-02-23, 12:36
I just had a look: I've got an 'E', so it's an european version.

I'm not sure if it's the channel negotiation that is confusing my AP. But
it has to be something that only happens at the startup of the
connection.
I just tested it again: I was surfing wirelessly with my laptop and
switched on Squeezebox (the sever runs on my desktop). After connecting
successfully to my AP I only could only browse the Squeezebox menues for
about 5 seconds till the connection was lost again. Looked at my labtop:
the signal of my AP was fluctuating heavily, one second full strength,
next second nothing, on/off/on/off... ???
Reset of AP: no help, same fluctuations
2*restart of Squeezebox: now everything is fine and working stable ?!?

Something is going on between my AP and the SB. Maybe its some 'wireless
noise' here around (got 2 foreign APs on channel 6 around my flat). But
I also had this trouble without other APs visible.

Now I changed my AP from 11 to 1, next try: SB restarts itself two times
during "Connecting..."-screen, then everything works fine.

It all looks really strange and its hard to tell who is to blame.

Kai

P.S.: signal strength on SB: 60-70%


On Mon, 23 Feb 2004, Sean Adams wrote:

>
> Kai,
>
> This is really interesting. I don't have an answer OTOH as to why
> changing the AP's channel would make a difference like that.
>
> Anyway, Squeezebox is configured with the right wireless card for
> wherever we ship it. If you look at the last character of the serial
> number on the bottom, it will indicate for which regulatory domain the
> wireless interface is configured:
>
> A America
> E Europe
> I Israel
> J Japan
> 0 No wireless interface
>
>
>
>
> On Feb 22, 2004, at 5:05 AM, Dr. Kai Godehusen wrote:
>
> > Hi *,
> >
> > some days ago I reported here about my Squeezebox having problems to
> > connect to my 3com access point (AccessPoint 2000). The squeezebox
> > resets itself several times during the inital connection process, or
> > lost
> > connection right after obtaining the IP address. Once it got a stable
> > connection it was running perfectly for may hours.
> > I thought it might be the 128-bit WEP that caused this - till today. I
> > just saw on my wireless laptop that when the Squeezebox is having this
> > connetion troubles the signal strength of the AP is fluctuating between
> > zero and full strength. That brought me to the idea that the automatic
> > determination of the best WLAN channel might be the source of problems.
> >
> > I just fixed the channel on my AP to 11 and the troubles went away! :-)
> >
> > That brings me to an important question: the Squeezebox uses 11 WLAN
> > channels (US specification) - right? But here in Europe we've got 13
> > channels. Can it be that this leads to troubles during negotiation of
> > the
> > best channel to use?
> >
> > Cheers
> > Kai
> >