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:
May. 22, 2001
Filed:
Dec. 18, 1997
Denise Kerstein, Mountain View, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A multiport data network switch includes a programmable Management Information Base (MIB) configuration register that serves as a reference for the Media Access Controller (MAC) at each port. The register is programmable for maximum packet length in two configurations. In a first configuration, the maximum packet length setting is constant for all ports. In the second configuration, the maximum packet length is set at a plurality of levels in accordance with certain dynamic conditions. On an untagged port, or on a tagged port capable of communicating with a Virtual Local Area Network (VLAN) that receives/transmits an untagged frame, the maximum packet length criterion is a first value. On a tagged port that receives/transmits a VLAN tagged frame, the maximum packet length criterion first level is expanded by the number of bytes required for the VLAN tag.