System and method for a multi-layer network element
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United States of America Patent
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Jun 27, 2000
Grant Date -
N/A
app pub date -
Jun 30, 1997
filing date -
Jun 30, 1997
priority date (Note) -
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Abstract
A multi-layer network element for forwarding received packets from an input port to one or more output ports. The packet is examined to look for different types of forwarding information. An associative memory is searched once for each type of information. The results from the two searches are combined to forward the packet to the appropriate one or more output ports. The packet may be examined for other information as well to make the forwarding decisions. In one embodiment, the invention examines the packet for layer 2 information as the first type and layer 3, and perhaps some layer 4, information as the second type. The results are merged to determine the most appropriate combination of layer 2 or layer 3 forwarding decisions for the packet.
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