HVPLS hub connectivity failure recovery with dynamic spoke pseudowires
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United States of America Patent
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Aug 26, 2014
Grant Date -
Dec 22, 2011
app pub date -
Aug 25, 2011
filing date -
Dec 31, 2008
priority date (Note) -
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Abstract
Techniques for recovering from hierarchical virtual private LAN service (HVPLS) hub connectivity failure with a dynamic spoke pseudowire. According to one embodiment of the invention, a provider edge (PE) network element in the HVPLS hub monitors for a failure of HVPLS hub connectivity failure and reuses an HVPLS spoke connectivity failure recovery mechanism in an MTU by fabricating failure of one or more spoke facing connectivity elements coupling the MTU with the PE network element causing the MTU to transition to a secondary PE network element in the HVPLS hub. In addition, the PE network element establishes a dynamic spoke pseudowire for each virtual instance affected with the MTU to restore HVPLS hub connectivity for that PE network element.
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