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Methods, apparatus and data structures for preserving address and service level information in a virtual private network

  • US 6,993,026 B1
  • Filed: 08/31/2000
  • Issued: 01/31/2006
  • Est. Priority Date: 08/31/2000
  • Status: Active Grant
First Claim
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1. A method comprising:

  • a) receiving a packet having a layer 2 destination address and a first layer 3 destination address at a port;

    b) modifying the packet by replacing the layer 2 destination address with context information based on the port;

    c) determining a second layer 3 destination address based on at least a portion of the first layer 3 destination address; and

    d) encapsulating the modified packet with the second layer 3 destination address.

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