Re: Frequent timeouts, Internet connectivity problem
- From: "GTS" <x>
- Date: Tue, 17 May 2005 13:23:10 -0400
That's a thorough job of testing and great summary. I don't have an answer
but two thoughts come to mind. The initial symptom you describe under Web
Browsing sometimes indicates poor DNS response though the other items don't
tend that way. A hardware or driver problem with the NIC seems like one
possibility. I wouldn't completely rule out the broadband modem either
despite the ISP check. I suspect you've done this, but powering it off for
a few minutes is sometimes useful.
(I would ordinarily also suspect a possible parasite interrupting the
connection, but it sounds like you've ruled that out.)
--
"speeder" <no.spam@xxxxxxxxxxx> wrote in message
news:fo1k81d7962ovf05hjp8i857un3ukosf5k@xxxxxxxxxx
>I am getting frequent (but not consistent) timeouts when accessing the
> Internet. This is one of those hard to troubleshoot problems so bear
> with me as I explain what happens and what I tried (with no success)
> to solve it.
>
> Timeouts are apparent in the following way:
> =====================================
>
> => Web Browsing
> Sites will timeout and not load anything. Usually if I click again it
> immediately loads. It can also take very long to "get going" but not
> timeout. Sites have good ping values and no packet loss. It is not
> related to any site in particular, it could affect anyone. I believe
> there is some problem in the initial negotiation.
>
> => Media Streaming
> I can tune in and hear music for a while but then it stops. Winamp can
> report either "Timed Out" or "Error to Sync MPEG" or no message. If I
> try again it usually starts but sometimes only after several attempts.
>
> Usually very reliable but today I got an error message with the
> following:
> -----------
> Delivery has failed on the enclosed message for the following
> reasons reported either by the mail delivery system on the mail
> relay host or by the local TCP/IP transport module:
>
> *** TCP/IP error while processing job ***
> A network error has occurred while WinPMail attempted to send
> your message. This error could be caused by many conditions,
> including the following:
> * The remote host may have gone down.
> * Your network may have been broken or gone down.
> * You may have a configuration problem in your WINSOCK.DLL.
> * If running on a SLIP line, you may have experienced a
> timeout (increase the value in WinPMail's Network Config.
> Dialog), or the phone line may have gone down or suffered
> from excessive line noise.
> -----------
>
> => Automatic updates
> Firefox updates can break in the middle of downloading. Loading of
> extensions can also be problematic and not load.
>
>
> This is what I have done so far to troubleshoot:
> =====================================
> Checked websites and streaming servers for ping values and packet loss
> (over a 12 hour period at 2 minute intervals). Values are good.
>
> Complained with my ISP for connectivity issues. Check was done by ISP
> and no problems were detected.
>
> Tweaked RWIN value from my default of 65535 to 17520. Timeout messages
> are quicker :-). This was done in line with Broadband Reports
> suggestions (http://www.dslreports.com/tweaks/RWIN). My average
> "large" ping latency is 245 ms. Pings across the globe to me (Tokyo
> University) is 348 ms.
>
> Took router and software firewall out of the way.
>
> Reset the TCP/IP stack with NetShell utility according to
> http://support.microsoft.com/default.aspx?scid=kb;en-us;299357
>
> None of these produced visible change, connectivity issues still
> persist particularly with web browsing and media streaming.
>
>
> This is where I am coming from:
> =====================================
> This is a fresh install (only a couple days old) from a CD-ROM with
> SP1. Automatic updates occurred without incidents to SP2. Before this
> reinstall, everything was working really fine and smooth with the same
> system and all the applications described above. A full reformat was
> needed due to a trojan infection. *Extensive* scanning and monitoring
> reveals previous signs are gone.
>
>
> This is my setup:
> =====================================
> WinXP SP2 fully patched
> Broadband connection (600kbps up and down)
> AMD 3200+, 512MB RAM, 60GB *free* space atm
>
> I don´t know what else to do or where to look. I still suspect some
> problem with Windows TCP/IP but apart from the reset I don´t know what
> else can be tried. Please help with ideas or fixes.
>
> tks
.
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