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I am at the end of a 21-switch replacement as part of a larger security-surveillance upgrade. Most of the cutovers have gone smoothly, but I have a few fiber uplinks that will not come up after moving them to the new switches. Old switch: (1G) SMC Ne...
@Daniel Harris wrote:I’d start by checking the SFP compatibility and DOM/transceiver diagnostics before assuming a laser issue. If the ports show no link LED at all, verifying the interface state, optic detection, and fiber polarity on both switches ...
