Method and apparatus for direct frame switching using frame contained destination information
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United States of America Patent
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Apr 13, 2010
Issued Date -
N/A
app pub date -
Nov 20, 2003
filing date -
Jul 30, 2003
priority date (Note) -
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Abstract
Frame contained destination information may be used by a switch to identify an appropriate output port for a given frame without performing a table access operation. This reduces the processing requirements of the switch to enable the switch to handle frames more efficiently. The frame contained destination information may be contained in the frame's local destination MAC addresses (DA) such that a portion of the DA directly indicates, for each switch that handles the frame, an output port for that switch. Different portions of the DA may be used by different switches, depending on where they are in the network hierarchy. Large switches may also use sub-fields within their allocated portion in the DA to identify internal switching components. A location resolution server may be provided to store and distribute IP and MAC addresses and respond to local ARP requests on the local domain.
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