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:
Jul. 20, 1999
Filed:
Mar. 01, 1996
Curtis D Gridley, Ayer, MA (US);
Amber Wave Systems, Inc., Westboro, MA (US);
Abstract
A packet switching system includes at least two network cards each receiving data packets via a plurality of associated ports, a system card, and an interconnect for connecting the system card to the network cards. Each one of the network cards comprises a plurality of port controllers for sending and receiving packets to and from a corresponding port and a packet processor for buffering packets received by the port controllers. The packet processor then sends destination addresses to the system card via the interconnect and receives forwarding information from the system card. The processor then forwards the packet in response to the forwarding information. The processor begins forwarding the packet in response to the forwarding information before the packet has been entirely received and checks the integrity of the packet by reference to check sum information contained in the packet as in cut-through switching. Future packets from the source port have their validity checked prior to forwarding in response to receiving an invalid packet from the source port as in store and forward switching.