Practical network troubleshooting, real device outputs, and step-by-step guides from the field. Routers, firewalls, switches, wireless – decoded.
$ ping 8.8.8.8
Reply from 8.8.8.8: bytes=32 time=12ms TTL=55
$ show ip interface brief
Gi0/0 192.168.10.1 up up
Gi0/1 10.10.10.1 up up
$ diagnose debug flow filter addr 10.10.10.5
$ diagnose debug flow trace start 10
I design, deploy, and troubleshoot enterprise networks — and I share the lessons that actually matter in the real world.
From routers to firewalls, wireless to VPNs, my goal is simple: make complex networking concepts practical, visual, and easy to understand.