Method for establishing restricted broadcast groups in a switched network

  • US 6,147,995 A
  • Filed: 08/31/1999
  • Issued: 11/14/2000
  • Est. Priority Date: 11/15/1995
  • Status: Expired due to Term
First Claim
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1. A computer-readable storage medium comprising program instructions for restricting flooding of a data packet, of one of a broadcast, multicast and unknown destination type, in a switched data communications network, the network including a plurality of end systems and switches connected by links, the switches having access ports connected to end systems and network ports connected to other switches, the program instructions causing the network to:

  • a. assign at least one identifier to a respective subset of end systems;

    b. map the at least one assigned identifier to an access port attached to at least one end system in the respective subset of end systems; and

    c. when the data packet is received from a source end system at a receiving access port of a first switch;

    i) determine one or more identifiers associated with the source end system;

    ii) encapsulate the data packet by adding a header with the one or more determined identifiers;

    iii) forward the encapsulated data packet to all or a subset of other switches in the network; and

    iv) determine if at least one access port other than the receiving access port on the first switch is associated with the one or more determined identifiers and forward the data packet out the at least one determined access port.

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