VLAN frame format

  • US RE45,081 E1
  • Filed: 12/27/2012
  • Issued: 08/19/2014
  • Est. Priority Date: 03/12/1996
  • Status: Expired due to Term
First Claim
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1. A method of identifying a virtual network associated with a data frame when transmitting said data frame between a communications medium and a shared communications medium, comprising the steps of:

  • a) receiving said data frame from said communications medium, said data frame comprising a first type field and a data field;

    b) inserting a second type field at a location within said data frame preceding said first type field, said second type field indicating said data frame comprises a virtual network identifier field;

    c) inserting said virtual network identifier field at a location between said second type field and said first type field;

    d) assigning a first value to said virtual network identifier field, said first value corresponding to said virtual network; and

    e) transmitting said data frame over said shared communications medium.

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