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:
Jan. 31, 2023
Filed:
Sep. 18, 2020
Realtek Semiconductor Corporation, Hsinchu, TW;
REALTEK SEMICONDUCTOR CORPORATION, Hsinchu, TW;
Abstract
A network communication device includes a plurality of ports, a memory, and a processor. The plurality of ports is configured to receive a packet. A memory is configured to store a first lookup table and a second lookup table. An entry of the first lookup table includes a flag field. An entry of the second lookup table includes an entry address of the first lookup table. The processor is coupled to the memory and the plurality of ports. The network communication device is configured to: analyze the packet by a software or hardware to obtain a source Media Access Control (MAC) address; obtain, according to the source MAC address of the packet, the entry of the first lookup table; read the flag field of the entry; and determine, according to the flag field, whether the entry is referred by the second lookup table.