interference suggestions

We have a wireless network between 3 or 4 pc's. During the day we can see 3
or 4 other networks, one of which is strong (35%). During the day the
network will hang, restart ... . Last night when all the other networks were
down the network was solid. Have tried changing channels, changing the
location of the wireless router. Does anyone have any helpful suggestions.
TIA

--
_________
MMAP HQ

the 2.4GHz band is pretty saturated in urban and some MDU locations.
have you tried ALL available channels? is yours set to G only (which
may help some with performance).

do you have the latest firmware for your router? which version
router and what hardware rev do you have?

On Tue, 13 Nov 2007 13:28:20 -0800, "mmaphq" <(E-Mail Removed)>
wrote:

>We have a wireless network between 3 or 4 pc's. During the day we can see 3
>or 4 other networks, one of which is strong (35%). During the day the
>network will hang, restart ... . Last night when all the other networks were
>down the network was solid. Have tried changing channels, changing the
>location of the wireless router. Does anyone have any helpful suggestions.
>TIA
--

Barb Bowman
MS Windows-MVP
http://www.microsoft.com/windowsxp/e...ts/bowman.mspx
http://blogs.digitalmediaphile.com/barb/

Hi
If the interference come from other Wireless Networks, and you already tried
changing channels try to use a Wireless utility that can be configured to
connect only to your SSID.
Otherwise, there is nothing too much that you can do about it beside buying
New High Power Hardware.
Jack (MVP-Networking).

"mmaphq" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> We have a wireless network between 3 or 4 pc's. During the day we can see
> 3
> or 4 other networks, one of which is strong (35%). During the day the
> network will hang, restart ... . Last night when all the other networks
> were
> down the network was solid. Have tried changing channels, changing the
> location of the wireless router. Does anyone have any helpful suggestions.
> TIA
>
> --
> _________
> MMAP HQ
>
>

On Tue, 13 Nov 2007 13:28:20 -0800, "mmaphq" <(E-Mail Removed)> wrote:

>We have a wireless network between 3 or 4 pc's. During the day we can see 3
>or 4 other networks, one of which is strong (35%). During the day the
>network will hang, restart ... . Last night when all the other networks were
>down the network was solid. Have tried changing channels, changing the
>location of the wireless router. Does anyone have any helpful suggestions.

The possibility being that one of your neighbours is running a WLAN with SSID
disabled, I'd advise you to run NetStumbler and get a reliable environment list.
Letting it run over a couple days would be a very good idea.
<http://nitecruzr.blogspot.com/2006/06/analyse-your-wifi-environment.html>
http://nitecruzr.blogspot.com/2006/0...vironment.html

--
Cheers,
Chuck, MS-MVP 2005-2007 [Windows - Networking]
http://nitecruzr.blogspot.com/
Paranoia is not a problem, when it's a normal response from experience.
My email is AT DOT
actual address pchuck mvps org.

"Barb Bowman" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
the 2.4GHz band is pretty saturated in urban and some MDU locations.
have you tried ALL available channels? is yours set to G only (which

Do not believe netgear has that option.

do you have the latest firmware for your router? which version
router and what hardware rev do you have?

We have been having the router check for updates & it says there are none.
Perhaps i should check their site.

mmaphq wrote:
> We have a wireless network between 3 or 4 pc's. During the day we can see 3
> or 4 other networks, one of which is strong (35%). During the day the
> network will hang, restart ... . Last night when all the other networks were
> down the network was solid. Have tried changing channels, changing the
> location of the wireless router. Does anyone have any helpful suggestions.
> TIA
>

To add just a little bit to what others have already posted --

Consider the possibility of coincidence: depending on where you're
located, sources of interference *other* than nearby wireless networks
may also be turned off at night. As Barb Bowman noted, there are a lot
of other users of the 2.5 MHz band, including microwave ovens, some
cordless telephones, and some wireless intercoms. Thus, your
interference source may be closer than a neighboring access point.

Using a tool like Netstumbler, as Chuck suggested, is a good idea.
Although there are 11 channels available (in the U.S.), for practical
purposes, only channels 1, 6, and 11 are far enough apart to prevent
most interference. Thus, if you discover that the high power access
point is on channel 1, use channel 11 (and vice versa). If the high
power access point is on channel 6, consider figuring out who owns it
and asking them to change to 1 or 11.

Although Netstumbler probably will tell you if an access point is using
802.11b or 802.11g, I don't know if it will tell you if the AP is using
some version of "draft" or "pre-" 802.11n. Some early implementations
of draft 802.11n (from about a year or so ago) were notorious for
completely disabling nearby 802.11g networks. (See, e.g., this article
from June 2006: http://blogs.zdnet.com/Ou/?p=247). It may be that the
only way to determine this (and certainly the only way to fix things if
this is your problem) is to get in touch with the owner of the offending
access point.

Finally, I really doubt that your Netgear router lacks a "g-only" mode.
What model is it?

--
Lem -- MS-MVP - Networking

To the moon and back with 2K words of RAM and 36K words of ROM.
http://en.wikipedia.org/wiki/Apollo_Guidance_Computer
http://history.nasa.gov/afj/compessay.htm

what exact model netgear router do you have?

On Tue, 13 Nov 2007 16:23:22 -0800, "mmaphq" <(E-Mail Removed)>
wrote:

>
>"Barb Bowman" <(E-Mail Removed)> wrote in message
>news:(E-Mail Removed).. .
>the 2.4GHz band is pretty saturated in urban and some MDU locations.
>have you tried ALL available channels? is yours set to G only (which
>
>Do not believe netgear has that option.
>
>do you have the latest firmware for your router? which version
>router and what hardware rev do you have?
>
>We have been having the router check for updates & it says there are none.
>Perhaps i should check their site.
>
--

Barb Bowman
MS Windows-MVP
http://www.microsoft.com/windowsxp/e...ts/bowman.mspx
http://blogs.digitalmediaphile.com/barb/

On Tue, 13 Nov 2007 23:16:59 -0500, Lem <(E-Mail Removed)> wrote:


>Although Netstumbler probably will tell you if an access point is using
>802.11b or 802.11g, I don't know if it will tell you if the AP is using
>some version of "draft" or "pre-" 802.11n. Some early implementations
>of draft 802.11n (from about a year or so ago) were notorious for
>completely disabling nearby 802.11g networks. (See, e.g., this article
>from June 2006: http://blogs.zdnet.com/Ou/?p=247). It may be that the
>only way to determine this (and certainly the only way to fix things if
>this is your problem) is to get in touch with the owner of the offending
>access point.

It's possible (unfortunately) that an 802.11"n" device may not even be detected
by an 802.11g (b, b/g) device. Here's an interesting discussion on this issue:
<http://www.dslreports.com/forum/r19385711-Does-NetStumbler-detect-80211n-wifi>
http://www.dslreports.com/forum/r193...ct-80211n-wifi

You may need something like WiSpy.
<http://www.thinkgeek.com/gadgets/electronic/80ce/>
http://www.thinkgeek.com/gadgets/electronic/80ce/

--
Cheers,
Chuck, MS-MVP 2005-2007 [Windows - Networking]
http://nitecruzr.blogspot.com/
Paranoia is not a problem, when it's a normal response from experience.
My email is AT DOT
actual address pchuck mvps org.

Chuck [MVP] wrote:
> On Tue, 13 Nov 2007 23:16:59 -0500, Lem <(E-Mail Removed)> wrote:
>
>
>> Although Netstumbler probably will tell you if an access point is using
>> 802.11b or 802.11g, I don't know if it will tell you if the AP is using
>> some version of "draft" or "pre-" 802.11n. Some early implementations
>> of draft 802.11n (from about a year or so ago) were notorious for
>> completely disabling nearby 802.11g networks. (See, e.g., this article
>>from June 2006: http://blogs.zdnet.com/Ou/?p=247). It may be that the
>> only way to determine this (and certainly the only way to fix things if
>> this is your problem) is to get in touch with the owner of the offending
>> access point.
>
> It's possible (unfortunately) that an 802.11"n" device may not even be detected
> by an 802.11g (b, b/g) device. Here's an interesting discussion on this issue:
> <http://www.dslreports.com/forum/r19385711-Does-NetStumbler-detect-80211n-wifi>
> http://www.dslreports.com/forum/r193...ct-80211n-wifi
>
> You may need something like WiSpy.
> <http://www.thinkgeek.com/gadgets/electronic/80ce/>
> http://www.thinkgeek.com/gadgets/electronic/80ce/
>

Chuck -- an interesting and amusing thread, particularly your first
comment (not to mention the youtube clip).

--
Lem -- MS-MVP - Networking

To the moon and back with 2K words of RAM and 36K words of ROM.
http://en.wikipedia.org/wiki/Apollo_Guidance_Computer
http://history.nasa.gov/afj/compessay.htm

"Barb Bowman" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
what exact model netgear router do you have?

wgt624