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. 11, 2004
Filed:
Feb. 18, 2000
Carl John Lindeborg, Shrewsbury, MA (US);
James Scott Hiscock, Rockport, MA (US);
David James Mannion, Northboro, MA (US);
3Com Corporation, Santa Clara, CA (US);
Abstract
A computer network switch includes a receiving module for receiving packets, a packet memory with a plurality of buffer cells with each of the buffer cells having a buffer descriptor. A descriptor free pool lists available buffer descriptors that can be used for new incoming packets. A plurality of transmit queues hold the buffer descriptors. Each of the transmit queues include an input queue, an expansion queue and an output queue. The switch also includes control logic for directing the removing of one of the available buffer descriptors from the free pool and directing one of the packets from the receiving module into one of the buff cells corresponding to the one available buffer descriptor. The control logic places the one buffer descriptor in the input queue of one of the transmit queues. The control logic also monitors a load status of the input and output queues.