Drop port based shared risk link group systems and methods
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United States of America Patent
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Nov 24, 2015
Grant Date -
May 29, 2014
app pub date -
Nov 27, 2012
filing date -
Nov 27, 2012
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Abstract
Drop port based shared risk link group (SRLG) systems and methods assign SRLG information to drop ports in another level or layer of a network. Thus, drop side SRLG information can be shared between different networks or layers enabling a combination with line side SRLG information within a network to identify and prevent single points of failure across the networks. Typically, SRLG details are assigned to line ports (NNI ports) within a network and this information is not shared with external networks or network layers for routing a connection through the network and the external networks. By assigning SRLG details to a drop port, this information can be relayed between the network and the external networks and considered when planning a route through all of the networks.
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