User Documentation

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Fiber Ports
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 a
multi-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 (5 km for multi-mode) for installation versatility.
Dual Speed Functionality and
Switching
10/100 Mbps switched RJ45 ports automatically negotiates with the connected
device for the fastest data transmission rate supported by both devices. All
models of Ethernet 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.
IE-SW-VL09-Switches operate 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
IE-SW-VL09-Switches have 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, the Ethernet switches automatically keeps up with new
node locations. An address-aging algorithm causes the least-used addresses to
be deleted in favor of newer, more frequently used addresses. To reset the
address buffer, power down the unit and then power it back up.
SC Connector