Comments on: RDC Connection Keeps Dropping. High PING.

By: rodster2000

rodster2000 — Tue, 10 Oct 2006 15:53:36 +0000

Thank you for all your feedback! Let me give these a shot and see if we can get this resolved.

By: risingstar

risingstar — Tue, 10 Oct 2006 07:51:36 +0000

Have you tried using a sniffer like WireShark (a free GUI) that presents an excellent display of that actual TCP/UDP exchanges between source and destination? If you can interpret the data, you should see what is happening at the time of the drop. This can’t help but point to the culprit as it provides IP addresses of source, destination, TCP/IP protocol, info on events, time of event. Do a google on Wireshark and download the free version. Whenever I’ve had a problem, this tool was invaluable.

If you are indeed having a problem with, say MTU, this would show up. Try it!

Malcolm/rising star

By: nitheel

nitheel — Mon, 09 Oct 2006 04:51:39 +0000

Hi Rodster2000,

I think its due to the MTU(Maximum Tranmission Unit) problem. Please check with your ISP.

Please find below the document..

http://www.erg.abdn.ac.uk/users/gorry/course/inet-pages/mtu.html

http://support.microsoft.com/kb/826159

Regards,
Nitheel.

By: rorydavies

rorydavies — Mon, 09 Oct 2006 04:40:16 +0000

Have you checked the service time-out for the port that RDC uses through the firewall? If you increase the time out to 720 minutes (12 hours) you might find the firewall no longer cuts off the connection. NB do not set to ‘never time-out’ as this will cause session overloads.

By: ursulus

ursulus — Sun, 08 Oct 2006 16:16:14 +0000

I Had a similar problem so I set up a ping to the ISP’s DNS server. I was lucky in that the ISP allowed ping to their DNS.

I found that it was the internet connection that was the problem and armed with this data I took it up with the ISP. Even though you have changed ISP you may find that your actual data comes from the same source as often ISP’s use the same wholesaler.

Good luck!

Ursulus

By: paul144hart

paul144hart — Sat, 07 Oct 2006 19:52:53 +0000

Are you using the same ISP for both connections? If so, they should be helping you. If nothing else they can tell if it is you dropping the connection or are they having problems in that area.

Are you using a router / firewall setup to direct traffic from your local network or a more causal connection.

By: larrythethird

larrythethird — Fri, 06 Oct 2006 21:35:00 +0000

A little to add to PatJohn’s post. The vpn we use at work has a time out feature to keep users from camping on the device. The network itself, DHCP lease time, backups, strange user behavior, etc., could also cause such issues. The wire to the premises. Too many issues to tackle all at once. Since you have already eliminated all of the obvious possibilities, it usually ends up as some small, overlooked feature or function somewhere within one of the networks.