Moxa Technologies EDS-205 LED Indicators, Auto MDI/MDI-X Connection, Color State Description

LED Indicators

The front panel of Moxa EtherDevice Switch contains several LED indicators. The function of each LED is described in the table below.

LED	Color	State	Description
P	AMBER	On	Power is being supplied to power input.
		Off	Power is not being supplied to power
			input.
		On	TP port’s 10 Mbps link is active.
10M (TP)	GREEN
		Blinking	Data is being transmitted at 10 Mbps.
		Off	TP Port’s 10 Mbps link is inactive
		On	TP port’s 100 Mbps link is active.
100M (TP)	GREEN
		Blinking	Data is being transmitted at 100 Mbps.
		Off	100Base TX Port’s link is inactive.

Auto MDI/MDI-X Connection

The Auto MDI/MDI-X function allows users to connect Moxa EtherDevice Switch’s 10/100BaseTX ports to any kind of Ethernet device, without paying attention to the type of Ethernet cable being used for the connection. This means that you can use either a straight-through cable or cross-over cable to connect EDS to Ethernet devices.

Dual Speed Functionality and Switching

Moxa EtherDevice Switch’s 10/100 Mbps switched RJ45 port auto negotiates with the connected device for the fastest data transmission rate supported by both devices. All models of Moxa EtherDevice Switch are plug-and-play devices, so that software configuration is not required at installation, or during maintenance. The half/full duplex mode for the switched RJ45 ports is user dependent and changes (by auto-negotiation) to full or half duplex, depending on which transmission speed is supported by the attached device.

Switching, Filtering, and Forwarding

Each time a packet arrives at one of the switched ports, a decision is made to either filter or forward the packet. Packets with source and destination addresses belonging to the same port segment will be filtered, constraining those packets to one port, and relieving the rest of the network from the need to process them. A packet with destination address on another port segment will be forwarded to the appropriate port, and will not be sent to the other ports where it is not needed. Packets that are used in maintaining the operation of the network (such as the occasional multi-cast packet) are forwarded to all ports. Moxa EtherDevice Switch operates in the store-and-forward switching mode, which eliminates bad packets and enables peak performance to be achieved when there is heavy traffic on the network.