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1. Seeing my boss just completely side step an issue, where his switch was sending vlan tags to his carrier causing the carrier to shut down the port, by purchasing a switch that didnt support vlan tagging. I died on the inside but lesson about end user troubleshooting learned. 2. Being able to break into a 24 hour data centre because the data centres building management just didnt give a shit. Turns out they had fired all their staff and were leaving the DC empty until they liquidated. We managed to get our kit and bail. But like physical security provided by a third party is ephemeral. 3. I used to lock my bike to my tool shelf. A thief came along and used my hacksaw from my toolshelf to break my bike lock and steal my bike. Thieves will use anything available, not just what I want them to use. 4. Had 2 console windows open. First to a Junos device on my desk. Second to a Junos core router. I reloaded one, and didnt realise I had reloaded the wrong one until we lost an entire state. Multitasking invites risk. 5. Customer had a huge failure. …
Original discussionAsk HN: What was your most humbling learning moment?680 source comments · at import