Posted on 2009-12-28
I have 5 remote offices that are on DSL and connect to our main office via VPN. Everyone uses Remote Desktop Connection to access our terminal servers at the main office. The DSL lines were installed 6 months ago. About 3 months ago 2 of our offices starting having issues with RDP. When they initiate a connection, RDP will timeout. If they are already connected, they will get a red X with an error stating that they lost connection and it retries to connect. Eventually, they will re-connect (about 5 minutes or so) or in the other case, they'll finally connect also.
There is no pattern to this issue. Some workstations connect fine while the one next to them can't connect and vice versa. Some users get time-out errors after a connection while others can keep working. This is only happening to two remote sites. All sites have the same router (Cisco 871) with the same configs, the same DSL modem (Actiontec M1000) with the same configs, etc. We have 8 terminal servers and the issue happens no matter which TS they connect to. ALL other locations have no issues at all, so we feel it is proprietary to the remote location and not the TS, etc. at the main office. We have had Qwest look at the network with no issues. Also, when the connection issue starts, we ping the TS in question from the local pc with good response times, and we do a DSL speed test (HTML) with good response times. We do not feel it is a network issue. We have sniffed the network with nothing abnormal. The list goes on as to what we have tried and the issue seems to be with RDP. We have tweaked all registry settings on both the workstations and the terminal servers regarding timeouts, re-tries, and MTU settings. Does anyone have any other ideas that we can try?