When networks break, you need a systematic approach. Random troubleshooting wastes time and misses root causes.
I'll cover the full troubleshooting methodology:
- Structured approach using OSI layers
- Diagnostic tools: ping, traceroute, nslookup, netstat
- Packet capture with Wireshark and tcpdump
- Physical layer testing for cables and hardware
- Documentation and escalation procedures
- Post-incident analysis to prevent recurrence
You'll learn to diagnose problems efficiently and fix them permanently.