Forwarding system with multiple logical sub-system functionality
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United States of America Patent
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app pub date -
Sep 18, 2008
filing date -
Nov 20, 2002
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Abstract
Generation of a mapping for use by a data forwarding entity having communication interfaces and instantiating multiple logical forwarding sub-systems associated with respective mappings including a first mapping and a second mapping. The first mapping specifies a next hop interface for data elements received at the interfaces, at least one next hop interface belonging to a set of logical interfaces. The second mapping specifies a second next hop interface for certain data elements for which the next hop interface specified by the first mapping belongs to the set of logical interfaces, at least one second next hop interface belonging to the plurality of communication interfaces. A consolidated mapping is created by replacing each portion of the first mapping that specifies a next hop interface belonging to the set of logical interfaces by a corresponding portion of the second mapping that specifies a second next hop interface. Efficiency arises when the same data is processed by more than one logical forwarding sub-system in the same physical forwarding system.
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