Some useful Network Measurement Tools

• Iperf : nice tool for measuring end-to-end TCP/UDP performance
• pathrate/pathload : tools to measure available bandwidth and capacity
• pipechar: hop-by-hop bottleneck analysis tool
• UDPmon: Network performance measurement tool
• synack: ping replacement for sites that block ping

Some useful Network Testing Tools

• NDT: Web100 based Network Configuration Tester
• tcpdump: dump all TCP header information for a specified source/destination
• tcptrace: format tcpdump output for analysis using xplot