PXES4P Switches Installation and User Guide (10/06)
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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 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 PXES4P Series Switches operate in the store-and-forward switching mode,
which eliminates bad packets and enables peak performance.