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Discovering MPLS VPN services in a network

  • US 20070280241A1
  • Filed: 06/02/2006
  • Published: 12/06/2007
  • Est. Priority Date: 06/02/2006
  • Status: Active Grant
First Claim
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1. A machine-implemented method of discovering a network service topology, comprising:

  • receiving a plurality of route target values from a virtual private network (VPN) route forwarding table (VRF table) of a networking device;

    determining and storing in a table one or more link pairs that are determined based on the route target values, wherein each of the link pairs indicates a logical connection between a first site and a second site within the VPN;

    creating a set of VPN objects based on an association between a first VPN object and the one or more link pairs stored in the table, wherein each of the VPN objects includes information indicating connectivity between a subset of sites from a plurality of sites within the VPN; and

    determining the topology for the first VPN object based on applying one or more topology rules to the subset of sites within the first VPN object.

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