Method and system for providing a virtual protocol interlayer
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United States of America Patent
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Issued Date -
Dec 30, 2004
app pub date -
Jun 30, 2003
filing date -
Jun 30, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed is a virtual protocol 'interlayer' between two protocol layers in a communications stack. When a communications task needs to be performed, but implementation within the existing protocol layers may hinder deployment due to issues of compatibility, the methods of the present invention are used to create an interlayer to handle the task. An addressing scheme peculiar to the interlayer is set up. The interlayer frees the other layers in the protocol stack to operate as before, leaving to the interlayer the specifics of performing the communications task. In one embodiment, an interlayer is built between the ISO/OSI protocol layers 2 and 3. Source routing is performed within this interlayer, using interlayer addresses. By using interlayer addresses rather than layer 2 or layer 3 addresses, this embodiment of source routing allows compatibility both with multiple layer 3 protocols and with multiple layer 2 network interfaces.
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