Network diagnostic tool on ubuntu server

clipped from www.howtoforge.com Network Diagnostic Tool (NDT) On Ubuntu 7.10 Server Some of the issues that NDT can identify on your network, include: The slowest link in the end-to-end path (Dial-up modem to 10 Gbps Ethernet/OC-192) The Ethernet duplex setting (full or half) If congestion is limiting end-to-end throughput Duplex Mismatch Excessive packet loss due to faulty cables An example of the output that you can expect is shown in the image below.