My current setup is a 2 site organization, with 2 seperate subnets. At the corporate office we have 2 ISP's, one is hooked up thru a Sonicwall NSA3500 which routes internet traffic and other rules like VPN, OWA, Exchange to an ISA server. Our clients then have the proxy set to look at ISA to get out to the internet.
The 2nd ISP is hooked directly into an Edgemarc, which has a VPN tunnel established to our remote site. The gateway for my client PC's, is set to the IP address of the on-site Edgemarc at each location.
The issue is when I begin to copy a file, I get time outs on each PC when doing pings during the file transfer. There is a noticable pause in my remote connection, similar to if you unplug the network cable to a PC your remoted into and plug it back in real quick. After this little hiccup, it continues to transfer the file and completes.
Should my gateway be the Edgemarc? I'm being asked why the gateway isn't the switch, and as long as I can remember you always used your router to route traffic to IP addresses on a different subnet. We have tried replacing modems at each end, network cables, and swapping Edgemarc hardware. It just appears to be an issue with routing, but I can't determine my next troubleshooting step.
Your advice is appreciated! Thanks!