I'm trying to stack two S4048-ON switches with fiber with no luck.
I can get link between switches with 1GBase-LR and 40G-LR4 optics but when I configure ports as stack-group theres no link anymore. I get link and stack working If I move switches closer and use direct attach cable.
So it looks like that stacking is not supported with fiber or is this just a bug? Switches are running software version 9.8(0.0P5).