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Boarder Gateway Protocol Signaling to Support a Very Large Number of Virtual Private Networks

  • US 20150003458A1
  • Filed: 06/27/2014
  • Published: 01/01/2015
  • Est. Priority Date: 06/27/2013
  • Status: Abandoned Application
First Claim
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1. In virtual private network (VPN) communications, a method for Boarder Gateway Protocol (BGP) signaling implemented by a first network element, the method comprising:

  • encoding Multiprotocol Label Switching (MPLS) information in a Network Layer Reachability Information (NLRI) label field that is longer than 24 bits; and

    transmitting a BGP update message comprising a BGP attribute to a second network element, wherein the BGP attribute comprises the NLRI and a specific Subsequent Address Family Identifier (SAFI) value, and wherein the specific SAFI value signals to the second network element, upon reception of the BGP update message by the second network element, that the NLRI label field is more than 24 bits long.

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