What command can be used to measure the throughput of a client-server?

# Measuring TCP bandwidth
iperf3 -c <server_IP>

# Measuring UDP bandwidth
iperf3 -c <server_IP> -u

# On the server, run in server mode
# iperf3 -s

iperf3 is a widely used tool for measuring network bandwidth between two points.

Alternative tools:

• Nuttcp: Another tool for testing TCP and UDP bandwidth.
• Netcat (nc): Can be used to measure bandwidth by transmitting data between two hosts and measuring the time. Less accurate than iperf3.
• Speedtest-cli: A command-line utility for using Speedtest.net to measure internet connection speed to the nearest server.

When choosing a tool, it is important to consider the type of traffic (TCP or UDP) used by the client-server and the accuracy of measurements. For most scenarios, iperf3 is the preferred choice.