Everytime it’s all over the internet and I still keep forgetting how to convince a Cisco switch not to complain about 3rd party SFP/GBICs.
So here I am: how to use a couple of unsupported, undocumented, beautiful commands to make a Cisco almost like a non-Cisco SFP/GBIC:
no errdisable detect cause gbic-invalid
service unsupported-transceiver
That’s it. It’ll work if you have IOS 12.2(25)SE and above (so it seems: verification needed).