Connection lost but not dropped??

[AV1611]

I have a problem with a program that runs in a Web Browser off of my Server. This program opens by pointing to a local IP. Once in it you can get the list of patients. Sometimes here lately when you hit get the list, I get IE pages popping up and saying it can't display this page, even though the page is internal on my server and not on the Internet. I go to the status of the 1Gig NIC card and it says it has been up for 14 hours on a good connection.

Any ideas of how to trouble shoot this. It is come and go.

Thanks in advance, AV

 

[Syty]

Questions you will need to troubleshoot. How about that?

1. What's the system components on the server, enough RAM?
2. What's teh actual load on the server?
3. Is this server and workstation on a hub with a lot of other machines, even if they aren't used?
4. Do you have more than one hub? If you do, and they are connected in anyway a "loop", get rid of it.
5. Is this a server running IIS? (a whole list of other problems)
6. are you using host entries, hitting it by hard IP, or externally resolving the server's IP from DNS
7. If DNS, is that server also a DNS server? How many services are you providing from one box?

All of these questions will help you get closer to the solution. You may have so much traffic just "bouncing off walls" in your hub that you may be getting intermittent connectivity on your network itself. (CSMA/CD, look it up)

If the network card is intermittent, it's performance stats aren't a good place to look for the problem. if you have a sniffer on yoru network, take metrics of your network when you are connecting and then again when you are not,
what's the common denominator, and what caused it.
good luck