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Method and system for enabling layer 2 transmission of IP data frame between user terminal and service provider

  • US 20030037163A1
  • Filed: 03/08/2002
  • Published: 02/20/2003
  • Est. Priority Date: 08/15/2001
  • Status: Active Grant
First Claim
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1. A communication method comprising the steps of:

  • (a) performing processing for designation of a service provider, user authentication, and IP address assignment, by exchanging management frames between a user terminal and a service provider through an access network; and

    (b) exchanging between said user terminal and said service provider through said access network main-signal frames each containing a Layer 2 address of the user terminal as a source Layer 2 address;

    wherein said management frames have a form which can be discriminated from the main-signal frames in Layer 2, and said access network holds information on at least one correspondence between at least one source Layer 2 address and at least one virtual private network, and in step (b), said access network recognizes one of the at least one virtual private network connected to said service provider, based on said Layer 2 address contained in each of said main-signal frames, and transfers the main-signal frames in Layer 2 by MAC bridging.

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