I recently had to use some none Cisco 10Gbs copper SFP’s in a 3850 stack. On inserting the SFP’s the interfaces went into err-disabled status and looking in the log I was getting the message “Warning: SFP gbic-security check fail” and “gbic-invalid”.
Using the below commands I was able to get the device to not put the interface into err-disabled when a non-Cisco SFP was used.
service unsupported-transceiver no errdisable detect cause gbic-invalid
I then had run a shut and a no shut on the interface, after that everything came up fine and everything looked good when looking at the capabilities of the interface.
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