Enhanced internet packet routing lookup
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United States of America Patent
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Jan 28, 2003
Grant Date -
Aug 9, 2001
app pub date -
Aug 22, 1997
filing date -
Aug 22, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
The invention provides a method and system for routing information lookup for packets using routing protocols such as IP or IP multicast (IGMP), or MPLS (multiprotocol label switching, also known as tag switching or label switching) or MPLS multicast, in which both the destination address and the length of that destination address are matched using a lookup table having separate entries for selected addresses and their lengths, which can be accessed in parallel for multiple representations of destination addresses, and in which the input interface associated with the packet is included in the information used for matching.
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