Ping, Traceroute, Pathping, and MTR Explained - Network+ N10-009

Ping and traceroute explained for beginners, plus pathping and MTR for real-world troubleshooting. Cover ICMP fundamentals from RFC 792 including Echo Request type 8, Echo Reply type 0, and Time Exceeded type 11. See exactly how traceroute uses shrinking TTL values to map every router on the path, why Windows tracert uses ICMP while Linux traceroute uses UDP port 33434 by default, and how pathping and MTR layer per-hop statistics on top of traceroute to find intermittent loss. Finish with what to do when firewalls block ICMP, including TCP SYN probes with tcptraceroute and traceroute -T. Everything maps to CompTIA Network+ N10-009 Domain 5 troubleshooting tools. Watch the next video on nslookup, dig, and the hosts file in the playlist.

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