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Wireless adapter losing network address even though signal is strong...

 
 
Howard Woodard
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      07-10-2009, 10:46 PM
I have a home wireless network. Up until recently it was based on a Linksys
WRT54G and the various PCs are a combination of Windows-based desktops and
laptops (XP Home & XP Pro sp3 and Vista Ultimate sp2) with integrated wi-fi
capabilities or with PCMCIA cards or internal PCI-based cards or in a couple
of cases USB based adapters. It has worked just fine and very reliably for
several years. Since my kids' and grandkids' friends are always bringing
their PCs over to play networked games I have the network configured without
any encryption. I use the MAC address filter in the router. It will only
allow connections from devices that have their MAC address entered into the
router -- something that I can do and undo pretty quickly without them
having to make configuration changes.

Recently, one of the desktops (XP Pro sp3) that used a 802.g PCI card by
Airlink started occasionally losing the network address/connection. I
noticed it because the desktop network icon would be moved and/or there
would be messages displayed saying that the "wireless connection had been
established" even though it was supposed to already have been connected. I
then noticed that when the icon would disappear the wireless icon in the
system tray would be animated and if I placed the cursor over it it would
say that it was acquiring a network address. The connection is always rated
as "Excellent" or "Very good" and shows a connection speed or 48-54 Mbps.

All of the other devices never disconnect.

Thinking that my Linksys router might be getting a little long in the tooth
I replaced it with a new Linksys (Cisco) WRT160N. Nothing changed -- except
that some of the adapters that supported 802.n started running faster. The
same desktop continued to lose and re-establish a connection while
everything else remained stable.

Then I updated my Airlink driver -- once from the Microsoft Update site and
once directly from Airlink. Again, nothing changed.

Finally I disabled the device and installed a Hawking 300N USB-based
adapter. The only thing that has changed is that while the erratic desktop
is connected it is connected at 270 Mbps rather than the 48-54 Mbps.

I have moved the erratic desktop around to different parts of the house
[near other devices that are working reliably] and the symptoms stay the
same.

It seems pretty clear to me that it must be something in the way XP Pro is
configured for this particular machine but I can't find any difference.

Is anyone familiar with this behavior and what causes it? More importantly,
how to eliminate it?

Thanks in advance,

Howard
============================================


 
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Lem
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      07-10-2009, 11:11 PM
Howard Woodard wrote:
> I have a home wireless network. Up until recently it was based on a
> Linksys WRT54G and the various PCs are a combination of Windows-based
> desktops and laptops (XP Home & XP Pro sp3 and Vista Ultimate sp2) with
> integrated wi-fi capabilities or with PCMCIA cards or internal PCI-based
> cards or in a couple of cases USB based adapters. It has worked just
> fine and very reliably for several years. Since my kids' and grandkids'
> friends are always bringing their PCs over to play networked games I
> have the network configured without any encryption. I use the MAC
> address filter in the router. It will only allow connections from
> devices that have their MAC address entered into the router -- something
> that I can do and undo pretty quickly without them having to make
> configuration changes.
>
> Recently, one of the desktops (XP Pro sp3) that used a 802.g PCI card by
> Airlink started occasionally losing the network address/connection. I
> noticed it because the desktop network icon would be moved and/or there
> would be messages displayed saying that the "wireless connection had
> been established" even though it was supposed to already have been
> connected. I then noticed that when the icon would disappear the
> wireless icon in the system tray would be animated and if I placed the
> cursor over it it would say that it was acquiring a network address.
> The connection is always rated as "Excellent" or "Very good" and shows a
> connection speed or 48-54 Mbps.
>
> All of the other devices never disconnect.
>
> Thinking that my Linksys router might be getting a little long in the
> tooth I replaced it with a new Linksys (Cisco) WRT160N. Nothing changed
> -- except that some of the adapters that supported 802.n started running
> faster. The same desktop continued to lose and re-establish a
> connection while everything else remained stable.
>
> Then I updated my Airlink driver -- once from the Microsoft Update site
> and once directly from Airlink. Again, nothing changed.
>
> Finally I disabled the device and installed a Hawking 300N USB-based
> adapter. The only thing that has changed is that while the erratic
> desktop is connected it is connected at 270 Mbps rather than the 48-54
> Mbps.
>
> I have moved the erratic desktop around to different parts of the house
> [near other devices that are working reliably] and the symptoms stay the
> same.
>
> It seems pretty clear to me that it must be something in the way XP Pro
> is configured for this particular machine but I can't find any difference.
>
> Is anyone familiar with this behavior and what causes it? More
> importantly, how to eliminate it?
>
> Thanks in advance,
>
> Howard
> ============================================
>
>


Typically, the behavior you describe is caused by interference from
outside sources of RF energy. This isn't consistent, however, with your
report that you experience the same problem in different locations. by
changing wifi adapters, you also seem to have eliminated factors such as
a failing adapter or bad antenna connection.

The only other thing that I can suggest is to check to make sure that
any power saving feature of the wifi adapter is turned off. Check the
properties of the device for both a "power management" tab and for a
"power save mode" on an "advanced" tab.

--
Lem -- MS-MVP

Apollo 11 - 40 years ago this month:
http://www.nasa.gov/mission_pages/ap...0th/index.html
 
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Jack [MVP-Networking]
Guest
Posts: n/a

 
      07-11-2009, 07:21 PM
Hi
As Lem posted, look at the Power Saving (Card Configuration Menu) and get
the card out of the POWER Saving Mode.
You can also try to Disable Windows Wireless Zero Configuration and Install
the original vendor's Wireless utility ( http://www.ezlan.net/wzc.html ).
Otherwise, XP is very friendly in refreshing the OS. I.e., you can
reinstall/refresh XP without losing any thing of the current configuration.
Refresh XP Installation.
Boot from the XP original CD. Skip the first screen that offer Console
Repair, and continue as though you install a New XP.
After you Agree etc., the new install screen will come on and would detect
the current XP installation.
You would have an option to Press R for Repair.
Use it, would take about 45Min. and you would have a Refresh Installation of
XP while keeping all your data and XP configuration.
P.S. If you made changes to WinXP Security setting (Like Firewall special
permission), you have to look over them after the refresh since they might
revert to the Default.
Jack (MS, MVP-Networking).

"Lem" <lemp40@unknownhost> wrote in message
news:(E-Mail Removed)...
> Howard Woodard wrote:
>> I have a home wireless network. Up until recently it was based on a
>> Linksys WRT54G and the various PCs are a combination of Windows-based
>> desktops and laptops (XP Home & XP Pro sp3 and Vista Ultimate sp2) with
>> integrated wi-fi capabilities or with PCMCIA cards or internal PCI-based
>> cards or in a couple of cases USB based adapters. It has worked just
>> fine and very reliably for several years. Since my kids' and grandkids'
>> friends are always bringing their PCs over to play networked games I have
>> the network configured without any encryption. I use the MAC address
>> filter in the router. It will only allow connections from devices that
>> have their MAC address entered into the router -- something that I can do
>> and undo pretty quickly without them having to make configuration
>> changes.
>>
>> Recently, one of the desktops (XP Pro sp3) that used a 802.g PCI card by
>> Airlink started occasionally losing the network address/connection. I
>> noticed it because the desktop network icon would be moved and/or there
>> would be messages displayed saying that the "wireless connection had been
>> established" even though it was supposed to already have been connected.
>> I then noticed that when the icon would disappear the wireless icon in
>> the system tray would be animated and if I placed the cursor over it it
>> would say that it was acquiring a network address. The connection is
>> always rated as "Excellent" or "Very good" and shows a connection speed
>> or 48-54 Mbps.
>>
>> All of the other devices never disconnect.
>>
>> Thinking that my Linksys router might be getting a little long in the
>> tooth I replaced it with a new Linksys (Cisco) WRT160N. Nothing
>> changed -- except that some of the adapters that supported 802.n started
>> running faster. The same desktop continued to lose and re-establish a
>> connection while everything else remained stable.
>>
>> Then I updated my Airlink driver -- once from the Microsoft Update site
>> and once directly from Airlink. Again, nothing changed.
>>
>> Finally I disabled the device and installed a Hawking 300N USB-based
>> adapter. The only thing that has changed is that while the erratic
>> desktop is connected it is connected at 270 Mbps rather than the 48-54
>> Mbps.
>>
>> I have moved the erratic desktop around to different parts of the house
>> [near other devices that are working reliably] and the symptoms stay the
>> same.
>>
>> It seems pretty clear to me that it must be something in the way XP Pro
>> is configured for this particular machine but I can't find any
>> difference.
>>
>> Is anyone familiar with this behavior and what causes it? More
>> importantly, how to eliminate it?
>>
>> Thanks in advance,
>>
>> Howard
>> ============================================
>>
>>

>
> Typically, the behavior you describe is caused by interference from
> outside sources of RF energy. This isn't consistent, however, with your
> report that you experience the same problem in different locations. by
> changing wifi adapters, you also seem to have eliminated factors such as a
> failing adapter or bad antenna connection.
>
> The only other thing that I can suggest is to check to make sure that any
> power saving feature of the wifi adapter is turned off. Check the
> properties of the device for both a "power management" tab and for a
> "power save mode" on an "advanced" tab.
>
> --
> Lem -- MS-MVP
>
> Apollo 11 - 40 years ago this month:
> http://www.nasa.gov/mission_pages/ap...0th/index.html


 
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