Private VLANs

CAFC
  • US 6,741,592 B1
  • Filed: 05/22/2000
  • Issued: 05/25/2004
  • Est. Priority Date: 05/22/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of implementing virtual local area networks (VLANs) in a switch in a computer network, comprising:

  • establishing at least one promiscuous port, said promiscuous port receiving packets from an external circuit connected to said promiscuous port;

    transferring a packet by a first VLAN within said switch from said at least one promiscuous port to a plurality of isolated ports, and only a selected isolated port receiving said packet; and

    transferring packets by a second VLAN from said plurality of isolated ports to said plurality of promiscuous ports, said second VLAN configured so that a packet transferred to said second VLAN by a first isolated port cannot be received and retransmitted by a second isolated port.

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