Hi, I've tested these equipments: * OLT SFP Sourcelight ref: SLET-4311S-C2D over RB2011 and OS 6.3 * ONU SFP Sourcelight ref: SLEU-3411S-E2D over RB2011 and OS 6.3 Directly, doesn't works. Routerboard hardware recognizes SFP modules, manufacturer, model, serial number, etc..., and "Rx lose"...