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ES42 Series Edge Switches Installation and User Guide (05/05)
devices. There is no software configuring to be done at installation or for maintenance,
even for the LLL ports. The internal functions of both are described below.
Switching, Filtering and Forwarding
Each time a packet arrives on one of the switched ports, the decision is taken to either filter
or to forward the packet. Packets whose source and destination addresses lie on the same
port segment will be filtered, constraining them to one port and relieving the rest of the
network from processing them. A packet whose destination address is 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 needed for maintaining the operation of the network (such
as occasional multi-cast packets) are forwarded to all ports. The Magnum ES42 Series Edge
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, Address Learning
The Magnum ES42 Series units have address table capacity of 2K node
addresses, and are suitable for use in large networks. They are self-learning, so that as
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