GE DS2020FECNRP010A Serial Link Module

MDI/MDI-X Switch An RJ-45 port on a 10 Mbps or 100 Mbps Ethernet network device can have one of two possible wiring configurations: MDI or MDI-X. The RJ-45 port on a PC, router or bridge is typically wired as MDI, while the twisted pair port on a switch or hub is usually MDI-X.

In attempting to auto-negotiate with Unit 1

the media converter will determine that the repeater is capable of half-duplex only and will set the port connected to the unit appropriately. In auto-negotiating with Unit 2, the media converter will determine that the switch can manage full-duplex and will set the port connected to the switch to full-duplex. The result is a duplex mode mismatch, with one unit operating in half-duplex and the other unit operating in full-duplex. You could resolve this duplex mode mismatch by manually configuring Unit 2, if possible, so that the port connected to the media converter is set to half-duplex.

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