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Cisco 3750 X 12 se model SFP interface is not comming up, but neighbour switch interface status up/up
We tried change SFP and patch cable and port but output remains the same , can you please suggest
We checked and replaced hardware (SFP and patch cable), but that doesn't help.
Uplink switch end Fiber SFP ports, but not able to change Duplex or speed.
Device up time is 5 years. Can you please suggest , if you have any reference documet pls share ...
