Funniest root cause you've found onsite

This morning at 8:15 in a warehouse aisle, a dead access point turned out to be patched into the PoE-in port on a passive injector that wasn’t powered; moved the RJ45 to a PoE switch and it came up in 10 seconds while the picker watched. What’s your most harmless major outage that turned into a two-minute fix?

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Had a whole wing down because the cleaner tripped the GFCI feeding the injector strip; one press of reset and 20 APs lit up — like discovering the TV wasn’t plugged in. Now I hit a pocket PoE tester first to confirm power on the jack before touching configs. Was your “passive injector” one of those 24V units mixed with 802.3af gear?

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Quick one: ‘entire office down’ because the uplink was fed through a pocket router someone plugged in for ‘better Wi-Fi’; yanked it and patched back to the switch and it all came up in seconds. Since then I enable DHCP snooping on access ports, and I’m curious if you label against rogue routers in cabinets, @rachelm452.

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