Methods, systems, and computer program products for routing packets at a multi-mode layer 3 packet forwarding device
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United States of America Patent
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Nov 30, 2010
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N/A
app pub date -
Dec 22, 2006
filing date -
Dec 22, 2006
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Abstract
The subject matter described herein includes methods, systems, and computer program products for routing packets at a multi-mode layer 3 packet forwarding device. According to one aspect, the subject matter described herein includes operating a first of at least two modules in a host mode, and operating a second of at least two modules in a longest prefix matching (LPM) mode. Operating a module in a host mode includes populating a host table and an LPM table with entries corresponding to hosts and routing layer 3 packets received by the first module using the host and LPM tables. Operating a module in an LPM mode includes populating a host table with entries corresponding to hosts, populating an LPM table with entries corresponding to variable length Internet protocol (IP) addresses and next hop addresses, and routing layer 3 packets received by the second module using the host and LPM tables.
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