TP-Link MC100CM, MC112CS, MC111CS manual

With the Link Fault Pass Through function enabled (optional with switch LFP), TP port and FX port of the same converter will inform each other the fault link status so that when one side of the link fails, the other side will force the link to shut down as soon as noticed. The procedure will be illustrated as shown below.

If link fail happens on TP port (A), the FX port (A) sends non-idle pattern to notice the FX port (B). The FX port (B) then forces its TP port (B) to link failed after receiving the non-idle pattern. Link status LED will also be off for both Converters and Devices as shown below.

		Link LED
Device A	Off
Device B	Off
	FX_LFP	FX_Link/Act	TP_Link/Act
Converter A	On	Off	Off
Converter B	On	Off	Off

8