Wireless Connection problem - constant drop outs (Intel Pro 3945ABG wireless NIC)
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Posted 2/17/2007 5:37:41 PM


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into linksys config pages - wireless - Advanced wireless settings, you'll find beacon ect here.

You'll find MTU size in - setup - basic setup.

to see if your losing fragmented packets type = ping www.yahoo.com -l 1500
see if it fails with fragments. If it does then work your way down, ie , 1472 , 1432 ect.
Usually you start from 1500 and work your way down to aroung 1400 until fragmenting stops then you set your MTU to the number you dont fragment at.

that make ant sense? LOL...too much JD tonight.

prolly going right down the WRONG route here, but hey, we learn summit new....


Post #4495
Posted 2/17/2007 5:45:07 PM
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So when i ping the site, am i just looking for lost packets? I'm not sure how that works seeing as though my internet is fine when i'm connected (no packet loss) and 100% packet loss when i'm not connected. Maybe i'm not understanding "fragmented"?
Post #4496
Posted 2/17/2007 5:51:14 PM


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no loss means your fine, and you will get 100% loss not connected.
as I said gone down the wrong route here lol. lets see what leaving the vista machine does..
gotta go now, will pick this up again tomorrow friend.


Post #4497
Posted 2/17/2007 5:53:45 PM
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Check that, just read it wrong first time through.

Seems you know your MTU, 100% loss at anything over 1472.

So now that i've made the changes, what does this mean exactly? Does any of this have anything to do with my problem.....lol

Thanks for the help, i'll check back tomorrow.
Post #4498
Posted 2/18/2007 9:29:03 AM


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No it does not seem to be anything to do with your problem ( too much drinking last night )

How did you get on with leaving the vista machine off, did it make any difference?

Post #4516
Posted 2/20/2007 5:37:43 AM
 

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Hi all. Newbie here, please be kind...ish.

I also have a wireless connectivity issue with my laptop.

Recently converted from desktop to laptop. It's a Advent intel celeron M430 1.73GHz 1024 MB, don't know what other details you need. Oh...running vista premium home. Which is so cool.

The problems I have are as follows, When I switch the lappy on sometimes it find the connection and is ok...for a bit, then drops out for no reason and then for some reason cannot find any wireless networks. I'm using the BT Homehub router using SSID, WEP.... It uses wireless LAN b/g and uses g, yet in the status window it shows 11Mbps instead of 54Mbps.

Once the connection drops I plug in the USB Asus wireless adapter, it then finds the network, connects automatically and then have no problems at all after that.

Know I can't have a wireless lappy with a USB network adapter plugged in, it's not cool.

Any ideas on the problem and how to fix it? I'm not to bad with computers but certainly not crack hot on them, so any advice would need to be in laymans terms please.

Thank you so much in advance. 

Post #4628
Posted 2/20/2007 2:30:01 PM


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Probably be easier for you to open the network connection properties box for the USB Asus wireless adapter and copy the settings to your built in adapter, if that makes sense to you?

@Sucka... Any update on your problem mate?

Post #4648
Posted 2/20/2007 3:49:41 PM
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Update on my problem:

Going into device manager, and entering show all devices, i disabled "teredo tunneling pseudo" device which apparently has something to do with ip6. I figured i would try that first since i found a few ways to disable ip6 and this seemed easiest. Well anyways, no drops for 16 straight hours now. I ran all the changed settings on my router for a day, and the drops continued at random times. I'm not about to say this problem is cured after 16 hours of uptime, but this is promising so far.

I also came accross some info on SPI (stateful packet inspection) that stated that routers supporting this can cause network problems within Vista. Digging a little further into that, my router does support that, and one of the symptoms can be network drops. While an interesting find, i'm not sure this has anything to do with my situation because i would think a lot more people would be having this issue than i've come accross.

I've now come accross several people who are complaining that their wireless strength never goes above "good" even when sitting next to their router. When using a wifi sidebar gadget, it will also never go above 60% strength. I'm gonna look more into this now, but the one person i've been able to find out their networking gear had the same setup as me. Intel 3945ABG and Linksys WRT54G, hoping to get some others to chime in on that.

So really i'm still in a holding pattern. For now 16 hours without a drop is a huge step in the right direction. Even if i dropped now, i would still leave the setup in its current state to see how long before another one occurs. At this point, i would be happy with 8+ hours of uptime at a time....lol

Post #4654