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System for converting data based upon IPv4 into data based upon IPv6 to be transmitted over an IP switched network

  • US 7,920,589 B2
  • Filed: 04/11/2008
  • Issued: 04/05/2011
  • Est. Priority Date: 05/26/2003
  • Status: Active Grant
First Claim
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1. A method comprising:

  • transmitting an Internet Protocol version 6 (IPv6 ) data packet via a Virtual Private Network (VPN), the IPv6 data packet converted from an Internet Protocol version 4 (IPv4 ) data packet, wherein the IPv6 data packet comprises a packet header comprising;

    a Provider Edge (PE) field storing data corresponding to a PE device;

    a VPN identification field storing data related to an IPv4 address that was in a packet header of the IPv4 data packet; and

    a location identification field storing data to identify a geographic location of a site;

    wherein at least one of the data stored in the VPN identification field and the data stored in the location identification field is identified via an inverse Domain Name Server (DNS) lookup on a DNS server.

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