Scalable and fault-tolerant link state routing protocol for packet-switched networks
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United States of America Patent
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Sep 1, 2009
Grant Date -
Dec 23, 2004
app pub date -
Jul 13, 2004
filing date -
Nov 30, 2000
priority date (Note) -
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Abstract
A distributed Link-State Routing Protocol (LSRP) system in a packet switch having external communication ports has a first card executing Update process of the LSRP, making database updates, a second card executing Decision process(Shortest Path First (SPF)) of the LSRP, and a communication fabric coupling the cards with each other and the external ports. The LSRP may be an IS-IS system. In some embodiments there are additional cards involved, and the distribution of Link-State functions is over a set of multiple cards. Also in some embodiments there is a Location Service (LS) controller monitoring and configuring cards in the system.
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