Amongst the configuration settings on your router, there should be one 
called "MTU" with a value in the neighborhood of 1500.  Try reducing this 
value by about 20 and see if that helps.  (It might not; I've just got a 
hunch that it might, depending on some things their modem might be doing.)

David Gillett



On 17 May 2006 at 20:34, Andrea & Bill Lee wrote:

Date sent:      	Wed, 17 May 2006 20:34:11 -0400
Send reply to:  	Personal Computer Hardware discussion List              <[log in to unmask]>
From:           	Andrea & Bill Lee <[log in to unmask]>
Subject:        	[PCBUILD] Satellite Internet Access Problem
To:             	[log in to unmask]

> Greetings all;
> 
>     Three months ago I had Ka band satellite internet access installed. I then plugged the modem cable into my router. Allowing the satellite modem, router and computer (XP Home) to automatically detect the setup worked well. I then turned on the two other computers which automatically detected the LAN and WAN.
> 
>     However, since installation there has been a problem with various sites not being found. After another try or two the site is often found. Sometimes it takes many tries. Uploading pictures to my Yahoo site almost always fails. Many web sites are also very noticeably slower to load and some images or functions do not load or operate.
> 
>     If I plug the cable directly from the modem to my XP computer, the vast majority of the problems are gone. However, there is still the odd site not found error. Usually, when I try the second time the site is found immediately. Sites are still slow to load. I contacted tech support. After exhausting all possibilities they deduced that my computer must be the problem. I then connected another system (Win 98SE) directly to the modem and it worked perfectly. I connected the other system (Win 98SE) and it too 
worked perfectly. I then connected the satellite modem to the router and then the two Win 98SE systems to the router and the problems returned for both systems.
> 
>     I have emptied browser cache, tried both Firefox and IE,  SFC (no problem files), inputted DNS numbers provided by ISP (Xplornet).
> 
>     What could be the issue with the router? And my computer? I am happy to do a complete reinstall, but would like to know what the problem is before doing so.
> 
>     I have;
> 
> D-Link DI-604
>     - upgraded router firmware, and exhausted communications with tech support, adjusted MTU, inputted DNS provided by ISP (Xplornet), LAN works well
> 
> Satellite Modem - Surfbeam SM2000
>     - tech support has confirmed that everything is working properly (as well as my own testing on Secondary Computers and various on-line speed tests)
> 
> Problem Computer - XP SP2, all updates, AMD 2600+, GA-7VM400 AM mb, 1 Gig ram, 250 gig hd (60 gig free), on board nic (Realtek RTL8139/810x), ATI 9600, USR 56.6 modem
> 
> Secondary Computers - Win 98SE, all updates, working well when connected directly to modem
> 
>     Thank you;
> 
> Bill
> 
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