Cisco 10G SFP Module Not Working? How to Fix Unsupported Transceiver and Link-Down Errors
You install a Cisco 10G SFP module, and the port stays down, flaps, or drops into an err-disabled state. Before you assume the module is faulty, it helps to know that most failures with SFP-10G-SR, SFP-10G-LR and their -S versions come from a short list of causes, and most take minutes to diagnose from the […]









