The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1999
Filed:
Sep. 11, 1997
Stephen L Van Seters, Stow, MA (US);
Ryan T Ross, Londonderry, NH (US);
Leonard Schwartz, Bedford, MA (US);
David C Ready, Londonderry, NH (US);
John A Flanders, Ashland, MA (US);
Robert P Ryan, Marlboro, MA (US);
William D Townsend, Groton, MA (US);
3COM Corporation, Santa Clara, CA (US);
Abstract
Logic circuits are employed in a telecommunications bridge/router device to examine a received frame to determine which VLAN, if any, the frame is associated with. The protocol type, receive port identification, and receive VLAN tag are employed to determine the transmit port identification and transmit VLAN tag. A predefined table indicates which ports within the bridge/router are associated with the VLAN. The frame is excluded from transmission through the ports that are not associated with members of the respective the VLAN.