Resource allocation using an auto-discovery mechanism for provider-provisioned layer-2 and layer-3 virtual private networks

  • US 7,478,167 B2
  • Filed: 03/18/2003
  • Issued: 01/13/2009
  • Est. Priority Date: 03/18/2002
  • Status: Expired due to Fees
First Claim
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1. A method for establishing a Virtual Private Network (VPN) tunnel between a first provider edge (PE) device and a second provider edge (PE) device of a Provider-Provisioned VPN (PPVPN) comprising:

  • advertising at least one tunnel-based parameter to one or more PE devices over a network backbone using an extension to an auto-discovery protocol, the one or more PE devices including at least one of the first and second PE devices;

    determining VPN capability discovery information including the at least one tunnel-based parameter; and

    negotiating between the first and second PE devices to automatically establish and configure a VPN tunnel between the first and second PE devices based upon the VPN capability discovery information.

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