What tools do you use for network diagnostics?

For network diagnostics, I use the following tools:

• ping — to check node availability and measure response time.
• traceroute (tracert) — to determine the route of packets and identify bottlenecks.
• netstat — to view active connections and ports.
• tcpdump — to capture and analyze network traffic at a low level.
• Wireshark — a graphical packet analyzer for detailed examination of network protocols.
• mtr — a combined ping and traceroute tool for real-time route monitoring.
• iperf — to measure network bandwidth.

These tools help identify issues with delays, packet loss, incorrect routing, and other network anomalies.