Jack (MVP-Networking). wrote:
HI, Thanks for the inputs.
It seems that we've forked into two issues...neither of which I understand.
My Verizon DSL is claimed to be DHCP in interleaved mode, not PPPoE.
My "understanding?" is that MTU=1492 is for PPPoE?
My line should run at 1500??
I did a bunch of experiments trying a number of different MTU settings.
AT MTU=1000, I get a reliable 700ish Kbps using verizon speedtest.
At anything over 1000, I get wild variations in test speed between
200Kbps and 500Kbps. I went round and round with Verizon over this
with no help at all. I gave up when I discovered the MTU "fix".
My Westell 6100 modem is set at 1500. The manual shows how to view it,
but not how to change it.
If there's a way to get that extra 10% up to 768Kbps, I'm all ears.
My current issue is file transfer between computers. I understand that
global settings can affect that, but I'm not willing to give up internet
connectivity/speed to fix one laptop. I need something that fixes both.
"Checking all network related settings" sounds like a great idea until
you realize that I have absolutely no idea what to check for.
This is a used laptop with unknown history. I have no idea what was
changed. Is there an online tutorial on this? Or a tool to change
everything back to default? I've been experimenting with tcpoptimizer.exe.
I did try reloading windows to insure default settings,
but I don't have restore CDs and the OEM
cd I tried resulted in XP activation issues, so I put it back to the way
it was.
Not sure where to go from here.
Thanks, mike
> Hi
> You should check all Network Related settings (including the network Card
> Drivers) and start while all settings are on Default. DSL ICP/IP MTU should
> be 1492 (I have Verizon too), there might be something else that is set
> incorrect and affects the MTU. Check the Router's MTU as well (set it to
> 1492).
> Jack (MVP-Networking).
>
> "mike" <(E-Mail Removed)> wrote in message
> news:3%I0h.2740$HY5.1396@trnddc06...
>
>>Asymmetrical Wireless Transfer Speeds.
>>
>>If I transfer a file from my desktop to my laptop, I get 2.2MB/sec.
>>If I transfer a file from my laptop to my desktop, I get 900KB/sec.
>>
>>Desktop 1GHz Celeron Windows 2000 SP4 wired ethernet to Netgear WGT624
>>Wireless Router.
>>Laptop Compaq Presario 900 Athlon 1500 Windows XPHome SP2 Dlink DWL-G650M
>>Cardbus Card.
>>TotalCommander reads out a running transfer rate during the transfer.
>>
>>
>>Second laptop VelocityMicro/Compal 1.7GHZ P4M WinXP Home SP2 built-in
>>INtel Wireless DOES NOT have this problem.
>>Get consistent 2.2MB/Sec both ways "G" only.
>>With the Dlink DWL-G650M I get 4.4MB/S from desktop to laptop and 3.6MB
>>from laptop to desktop "Super G 108" mode.
>>
>>My conclusion is that the DWL-G650M and its driver are capable of high
>>speed both directions.
>>The Dlink and Netgear appear to be compatible with the 108Mb/S protocols.
>>
>>Sounds like a configuration problem in the Compaq laptop. But I have no
>>idea what to look for.
>>
>>The Compaq version of XP may configure itself differently??? I loaded SP2
>>myself. I used TcpOptimizer.exe to change the MTU to 1000.
>>My Verizon 768K DSL is horribly slow with anything > 1000. Get near rated
>>speed with MTU at 1000. All my systems are configured at MTU=1000.
>>
>>Ideas?
>>Thanks, mike
>
>
>
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