Fiber optic patch cord not transmitting light

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Even microscopic debris can block or scatter light, particularly in APC or high-speed data center links. Fiber optic patch cords are often treated as low-risk consumables, yet a large percentage of optical link failures originate at the patch cord level. Fiber optic troubleshooting is an essential skill for network administrators, technicians, and engineers responsible for maintaining and repairing fiber optic systems. To do this, I have taken 2 new cisco switches out of the box, I connected fiber cables on the TenGig port 1 going from the switch to the patch panel, and this setup is for both patch panel 1 and 2. However, as MPO connectors become more prevalent, several common issues have surfaced.

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