Which tool is specifically designed to measure throughput between two network devices?

Iperf is a powerful network testing tool specifically designed for measuring the maximum achievable bandwidth on IP networks. It facilitates detailed performance analysis between two network devices by generating TCP and UDP traffic and then evaluating the throughput achieved during the test.

When using Iperf, you can set up one device as a server and another as a client. The client initiates the test by sending data to the server, which measures the amount of data received over a specified period of time. The results provide critical metrics such as bandwidth, jitter, and loss, making it an ideal choice for network performance evaluation.

Other options serve different purposes: Speedtest is mainly used for testing internet speed and gives results based on external factors such as ISP performance. The Ping utility focuses on measuring round-trip time for packets sent to a specific destination, offering minimal insights into throughput. Traceroute is utilized for mapping the path that packets take to reach a destination, which does not include bandwidth measurement. Thus, Iperf stands out as the most suitable tool for directly assessing throughput between two devices.