System and method for virtual router failover in a network routing system
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United States of America Patent
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Oct 2, 2007
Grant Date -
Jul 12, 2007
app pub date -
Aug 21, 2006
filing date -
Aug 29, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
In a network routing system,a control blade provides for redundancy and failover of virtual routers (VRs) instantiated by objects running on processing engines of the several virtual routing engines (VREs). When the control blade detects a failure of one processing engines, it may identify the virtual private networks (VPNs) and/or VRs operating on the failed processing engine. The control blade identifies a set of command lines corresponding with the identified VPNs and VRs, and replays the set of command lines with an identity of a new processing engine to recreate the identified VPNs and VRs on the new processing engine.
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