System and method for preserving multicast data forwarding during control failures in a router
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United States of America Patent
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Aug 31, 2010
Grant Date -
Jan 26, 2006
app pub date -
Jul 23, 2004
filing date -
Jul 23, 2004
priority date (Note) -
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Abstract
A multicast non-stop forwarding (NSF) router architecture enhances high availability of a multicast router in a computer network. The router architecture further preserves multicast data forwarding through a data plane during NSF recovery of one or more failures in a control plane of the router. Various multicast components of the router cooperate to provide a checkpointing and recovery technique of the multicast NSF architecture that enables efficient restart and recovery of the control plane failures without loss of data connectivity.
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