RFN - Remote Fault Notification Feature ICX 7150 ICX 7250 ICX 7450 ICX 7550 ICX 7650 ICX 7850 Remote Fault Notification (RFN) for 1 Gbps fiber 08.0.60 08.0.30 08.0.20 08.0.95 08.0.70 08.0.90 Parent topic: Layer 2 Switching