Fiber Ports; Dual Speed Functionality And Switching; Switching, Filtering, And Forwarding - Moxa Technologies EtherDevice User Manual

Fiber Ports

MOXA EtherDevice Server'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.
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 Server's 10/100 Mbps RJ45 switched ports can be configured for
10 Mbps operation, 100 Mbps operation, or to auto-negotiate with the connected device for
the fastest data transmission rate supported by both devices.
All models of MOXA EtherDevice Server 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 Server 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.
MOXA EtherDevice Server User's Manual 4-5
Hardware Overview