Archived from groups: alt.internet.wireless (
More info?)
Hi Jeff,
Hope this isnt a double post as I could not find the first reply to
yiu..
"Jeff Liebermann" <jeffl@comix.santa-cruz.ca.us> wrote in message
news:vjo9k05kjpsa13ndggfd21bl2c09ji243j@4ax.com...
> On Sun, 12 Sep 2004 22:46:18 GMT, "Tim Bosko" <timbosko@goplay.com>
> wrote:
>
>>I recently went to wireless in my house. 4 computers total. All network
>>stuff works but every 60 seconds (+or- 5 seconds) I take a 50% packet loss
>>hit. This happens every minute.. never skips a beat.
>
> Do you have any nearby rotating dish type radar installations nearby?
> Are you in an industrial district that may have an RF plastic molding
> pre-heater operating? Do you operate any X10 TV remote extensions?
> Any nearby commercial radio sites? My guess(tm) is RF interference.
There are no radar or microwave towers within a 10 mile radius. I am pretty
much
in the woods. There is a Airport about 10 Miles away.
>>I am using Linksys
>>wireless-B router and linksys Wireless-B NIC's. This happens on all 4
>>machines and it never happened when using Ethernet (2 days ago).
>
> OK, so it's only on the wireless links. The wired LAN connections
> work fine.
>
>>Router is a BEFW11S4
>
> Linksys makes 4 different versions of this router. I have a v4
> incantation.
I also have version 4
>>- Upgraded to the most recent Firmware (1.50.14 from 1.50.10)
>
> Must be a BEFW11S4 v4. That's what I'm using. No similar problems.
>
>>- Reset the Router and DSL modem (Westell Wirespeed) and
>>shutdown and restarted all the computers
>
> Did you remember to reset the BEFW11S4 to default settings after
> upgrading the firmware? I don't recall if it's manditory, but
> methinks it's a good idea. I've been burned a few times when I didn't
> do that.
Yes I did reset the router even though the Linksys tech said it was not
necessary
after the firmware upgrade. No change
>>- Adjusted the MTU to one that does not result in Packet
>>fragmentation
>
> That won't help. The MTU is a negotiated value between your router
> and the web server that you're browsing. If PMTU Auto Discovery is
> functional, the routers will negotiate whatever lower MTU is required.
> Put it back to 1500.
I will put it back to 1500.
>>- Disabled QoS on the adapter
>
> Makes no difference as QoS only works when you have a router or server
> that supports QoS. In Microsoft's implimentation, QoS is an
> applications level service that requires a compatible application such
> as NetMeeting. There's some glop on the MS web pile at:
>
http://www.microsoft.com/windows2000/techinfo/howitworks/communications/trafficmgmt/qoscomp.asp
>
>>- Relocated the router away from all other electronic
>>equipment
>>- adjusted antenna's on the NIC's and router
>>
>>None of this has resolved the problem. If anyone has had a similar problem
>>and can lend some advice please do. I would really appreciate it. Thanks
>>in
>>advance
>
> First thing to try is change the channel on the BEFW11S4v4 wireless
> router just in case there's some sort of 802.11 based interference.
> Next, fire up Netstumbler 0.4 on a laptop and do some sniffing. What
> you're looking for is an extremely strong 802.11 signal on 2.4GHz.
> Also, if there's a laptop, try testing the laptop on a local 802.11
> hot spot to see if it's working correctly. It could be some kind of
> power saving "feature". Perhaps Windoze is polling for peripheral
> changes.
I forgot to mention in my initial post, I did try all channels and channed 6
was the
best (That is what it has been on since the install). All other channels
result in
much worse packet loss (Constant) some worse than others. Channel 6 is solid
until that "Hit" takes place every minute.
> Any other form of interference is going to need a spectrum analyzer.
> If you can borrow one, that will be the best. If not, you can buy an
> old Frequency Hopper card that will act as a reasonable spectrum
> analyzer (that does NOT work with XP):
>
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5719309772
> What you're looking for is radar, microwave ovens, industrial RF
> heaters, etc.
No other interference. 3 of the 4 machines are located on the top floor (of
4 floors)
and one is on the 3rd floor.
There is however another access point that is showing up when I look at the
"available Wireless Networks"
button on the adapter properties, is see my SSID with all 6 green bars for
signal strength.
I also see an access point called "MSHOME" and it has 2 green bars. So there
are
actually two access points it appears. How can i get rid of the MSHOME One?
I have looked
everywhere and cant see where to delete it or atleast tell my NICS not to
look for it. It shows
up on all 4 of my machines (One of which is a Laptop). It is at like 33%
signal strength where
my connection is at 100%.
Thanks again for the help so far.. It is greatly appreciated.
> --
> Jeff Liebermann jeffl@comix.santa-cruz.ca.us
> 150 Felker St #D
http://www.LearnByDestroying.com
> Santa Cruz CA 95060 AE6KS 831-336-2558