I have three Windows 2000 servers connected with a VPN over T1. The traffic over the VPN mainly consists of AD replication, Exchange e-mail, and very small file transfers, and two remote desktop users. Everything works great until the usage gets just a little heavier. For instance, if one user is connected and using a remote desktop session, and I try to open a Terminal Services session, the VPN will dropout for 5-10 seconds, and we both get disconnected. I’ll do a persistent ping of the remoteserver, and it works great. I open the TS session, and in under a minute the VPN drops, my ping gets no response, and my TS session is interrupted. A few seconds later, the ping gets a response, and all is well. I can ping the remote server all night and lose maybe 1-10 packets. With no traffic during work hours I still have practically no lost packets. BUT get two users on at the same time and it drops.
Does anyone know why this might happen. Would it make sence fo have each user make their own VPN connection? Is there a limit to the traffic a VPN can handle? Thanks.