Hi Has anyone experience with the WS-X6148-FE-SFP card or the WS-X4248-FE-SFP card. E.g. Do the GLC-FE-100xx work flawlessly agains other 100FX/LX media converters? The buffers for X6148-FE-SFP seam ok Transmit queue 1p3q8t/5.2MB dedicated per port 1p1q4t/64KB shared by 8 ports