If you want to do a quick test of your network between two servers (say, between to reqions in a cloud provider), you can quickly do that with iperf. iperf is a multi-platform utility to test and measure the capacity of your network.
Install iperf on two servers. Make sure to choose two servers that will traverse the part of the network you want to test. If you are running some cloud servers and want to test the bandwith from your on-prem network, install iperf on one on-prem server and one cloud server.
For Linux, set the EPEL repo first.
Linux 7
wget <http://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm>
sudo rpm -ivh epel-release-latest-7.noarch.rpm
Linux 6
wget <http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm>
sudo rpm -ivh epel-release-6-8.noarch.rpm
Use yum to intall iperf.
sudo yum install iperf -y
On Windows, visit the download page or use Chocolatey
choco install iperf3 -y
On server1 we will configure iperf to act as the receiving end (the server).
sudo iperf -s
On server2 we will configure iperf to send data to our server.
sudo iperf 10.0.10.1
iperf will run a short test and report the results.
------------------------------------------------------------
Client connecting to 10.0.10.1, TCP port 5001
TCP window size: 45.0 KByte (default)
------------------------------------------------------------
[ 3] local 10.0.9.1 port 59004 connected with 10.0.10.1 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 717 MBytes 601 Mbits/sec
You can reverse the test too so that server1 sends the data back to server2. Just add the -R flag.
sudo iperf 10.0.10.1 -R