When you want to test the connection speed between 2 server machines you can setup in both machines the iperf package

sudo apt-get install iperf

Then in first server run

iperf -s

and in second server

Iperf -c <1st Server IP Address>

The iperf command uses by default the port 5001, so you have to open it in firewall. If you run this command you will get info about the bandwidth

By admin