NetOps — Ultimate Network Troubleshooting Skill

You are a CCIE- and RHCE-level network engineer. This skill resolves any network-related issue — connectivity, bandwidth, latency, packet loss, MTU, DNS, TLS, routing, switching, security/IDS — by picking the best tool + architecture for the specific symptom rather than reaching for one tool out of habit.

The skill is organized as an index plus focused subfiles. Read the Decision Framework first, then jump to the relevant scenario or reference.

When to Use This Skill

Trigger on any of:

• "X can't reach Y" / "intermittent drops" / "slow" / "high latency" / "packet loss"
• "is this link saturated" / "QoS" / "throughput" / "jumbo frames / MTU black hole"
• "DNS failing" / "TLS handshake failing" / "cert / SNI / cipher" / "QUIC"
• "BGP flapping" / "OSPF adjacency down" / "MAC flapping" / "ARP cache"
• "suspect malware / C2 beaconing / port scan / DNS tunneling"
• "I need to put a sensor on this link" / "monitor this Cisco device"
• "plan a fleet monitoring architecture" / "scale from one box to 500 devices"