Re: Certain websites unreachable despite ok DNS, ping, etc.
- From: hurajt@xxxxxxxxx
- Date: 2 Nov 2006 08:41:57 -0800
Try changing MTU on your workstation or gateway to something lower. The
usual value is 1500 B and you can try to put it down to 1350 and if it
still doesn't work, down to 1100 or eve less. We had similar problem -
we guess it's caused by incorrent settings on our provider's side.
Probably WAN routers/switches can't cope with large packets ?
In Microsoft Windows 2000/XP change this registry value:
HKLM/System/CurrentControlSet/Services/Tcpip/Parameters/Interfaces/(TCPIP
stack of used connection)
The value doesn't exist as default - create it (DWORD MTU=1350(decimal)
See if it helps.
If anyone knows why this problem occurs, please let me know :)
sando
Ilan787 wrote:
Hi,
I'm at the end of my abilities to troubleshoot. I am unable to connect to
www.aopa org even though the rest of Internet seems reachable. I don't
understand what can cause this problem, here is what I have tried, to no
avail:
* Tried it on another network, still can't reach it
* Website is up and running, tried it from another computer, it works.
* Problem has persisted for 7 days now
* DNS lookup retrieves correct web address
* browsing to the website using the IP address doesn't work either
* Tracert to www.aopa.org works ok
* Telnet on port 80 connects fine, but no response from the server (same
issue, I suppose)
* Internet Explorer and also other browsers have the same issue
* Upgrading to IE7 didn't fix the issue (suspect it is not a browers issue,
but somewhere below the browers level)
Any suggestions what else I can try?
Thanks,
Ilan787
.
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