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Original Cisco GLC-GE-100FX gbics are not working in WS-C3560CG-8PC-S while Third-Party gbics work without any problems

Hi all,

i have a gbic problem with my WS-C3560CG-8PC-S.

My original 100FX gbics are not working

Mar 30 01:28:41.575: %PHY-4-SFP_NOT_SUPPORTED: The SFP in Gi0/10 is not supported
Mar 30 01:28:41.575: %PM-4-ERR_DISABLE: gbic-invalid error detected on Gi0/10, putting Gi0/10 in err-disable state


100FX Third-Party Gbics are working without any problems.

NAME: "GigabitEthernet0/9", DESCR: "100BaseFX-FE SFP"
PID: Unspecified       , VID:      , SN: AFFxxxxx


What can i do?


I tried different firmware versions (12.2 and 15.2(1)E3)

I also tried the "service unsupported-transceiver" command.


It still does not work with 8 Switches and 16 original gbics :(


  • LAN Switching and Routing
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GLC-GE-100FX and GLC-T is not

GLC-GE-100FX and GLC-T is not supported as documented in the 3560C Data Sheet.


You could try contacting your Cisco SE/AM and request for a Product Enhancement Request (PER).