Long story short CSS won't negotiate a link on SFP(Q347F-600LB) with a CISCO switch, however with the same SFP in CCS it will easily link with generic SFP media converter.
To make it clear, I have a working setup - Inteno CPE linked with CISCO via fiber(length sub 1km) SFP, but if I remove the SFP from CPE and plug it in CCS SFP port (with the same fiber to the CISCO), link won't come up.
However CSS will link up and work with generic SFP converter (2m fiber patch) via the same SFP(from CPE) in CSS.
Could it just be an incompatible SFP? if so, why does it link up with a media converter, but not the CISCO?
And/or is the SFP module TX power is dependent on the device it's plugged in?
p.s. I'm yet to measure fiber signal.