Big thank you to Cisco for sponsoring my trip to Cisco Live and this video!
Stop before you peer into that shining fibre port. In this quick demo, I speak to Kevin Wollenweber from Cisco who debunks the idea that every optical signal is harmless. We discuss why cheap LED transceivers on short links differ wildly from powerful long‑haul lasers that travel kilometres and can still blind you at close range, even when labelled “Class 1” under telecom rules. We break down the science, show real router ports, decode safety labels and give you a simple two‑step check to decide whether it is safe to look. Essential viewing for network engineers, fibre installers, home‑lab builders and anyone working with optical networking.
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