Cisco “gbic-invalid error detect”
January 29th, 2010
| Tags: Cisco
After putting SFP in GBIC, Cisco 3750 reports:
%PM-4-ERR_DISABLE: gbic-invalid error detected on Gi0/2, putting Gi0/2 in err-disable state
This can happen if you are using third party SFP (non-cisco). The solution is to use undocumented command.
First enter command:
no errdisable detect cause gbic-invalid
and second command:
service unsupported-transceiver
There is no autocomplete for this command and no guarantee, but try it … It works for me on Cisco 3750.

Yu’ve made my day, man !!
I’ve just running around.
THNKS
How to resolve same problem in catalyst 2960.
Use the same commands, there is no autocomplete for “service unsupported-transceiver”
Thanks very much for this advice, worked for me on a cat2960G
thanks it works also for me..
Worked perfectly!!!!