I am sure you have installed a GBIC in a Cisco switch that was not manufactured by Cisco. and your switch no doubt shut down the SFP port and gave the following error

%PHY-4-UNSUPPORTED_TRANSCEIVER: Unsupported transceiver found in Gi1/0/0
%GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port 65538 has bad crc


well here is how we fix that issue

login into the CLI of the switch

enable your session

and enter into config mode using the config t command

now enter the following 2 commands

service unsupported-transceiver

no errdisable detect cause gbic-invalid

your 3rd party gbic should now work properly.

remember to save you configuration.


By admin