Slow performance over site-to-site Ipsec VPN tunnel
Posted on 2012-08-17
We have a site-to-site ipsec VPN tunnel with a remote site and we are getting very slow performance over the tunnel. I can't figure out where the problem is. We have an application that we use and it works fine here, but at the remote site, that application is very slow. It connects to a SQL server here over the VPN connection.
We have several other remote sites with similar configurations and they do not see the slow performance with this application that this particular site sees. They internet connection is a 50Mb connection, so it shouldn't be a bandwidth issue, from that ISP side anyways.
I've tried running IPERF over the connection and it comes back with horrible numbers, but I've heard now that running IPERF over a VPN is not very accurate.
Is there a way to see what kind of actual performance we're getting over the VPN tunnel itself?