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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 needing to pay 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.
Fiber Ports
MOXA EtherDevice Switch’s fiber switched ports operate at a fixed 100 Mbps speed and
full-duplex mode to provide the best performance. The fiber ports are factory-built as either a
multi-mode or single-mode SC connector. Consequently, you should use fiber cables that have SC
connectors at both ends. When plugging the connector into the port, make sure the slider guide is
positioned to the right side so that it fits snuggly into the port.
slider
slider guide
slider ridges
The 100 Mbps fiber ports are switched ports, and perform as a domain, providing a high
bandwidth backbone connection that supports long fiber cable distances (up to 2 km for
multi-mode, and 15 km for single-mode) for installation versatility.
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.
Switching and Address Learning
MOXA EtherDevice Switch has an address table that can hold up to 1K node addresses, which
makes it suitable for use with large networks. The address tables are self-learning, so that as nodes
are added or removed, or moved from one segment to another, MOXA EtherDevice Switch
