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. 08, 2005
Filed:
Aug. 14, 2000
Gopal S. Krishna, San Jose, CA (US);
Peter Ka-fai Chow, San Jose, CA (US);
Shr-jie Tzeng, Fremont, CA (US);
Somnath Viswanath, San Jose, CA (US);
Gopal S. Krishna, San Jose, CA (US);
Peter Ka-Fai Chow, San Jose, CA (US);
Shr-Jie Tzeng, Fremont, CA (US);
Somnath Viswanath, San Jose, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A network switch, configured for performing layer 2 and layer 3 switching in an Ethernet (IEEE 802.3) network without blocking of incoming data packets, includes a network switch port having a filter (i.e., a packet classifier module) configured for evaluating an incoming data packet on an instantaneous basis, immediately upon receipt at the network switch port. The filter performs simultaneous comparisons between the incoming data stream of the data packet and multiple templates configured for identifying respective data protocols. Each template is composed of a plurality of min terms, wherein each min term specifies a prescribed comparison operation within a selected data byte of the incoming data packet. The templates may be programmed by a user and stored in an internal min term memory. Moreover, the multiple simultaneous comparisons enable the network switch to perform layer 3 switching for 100 Mbps and gigabit networks without blocking in the network switch.