07468975 is referenced by 51 patents and cites 192 patents.

According to an embodiment of the invention, a network device such as a router or switch provides efficient data packet handling capability. The network device includes one or more input ports for receiving data packets to be routed, as well as one or more output ports for transmitting data packets. The network device includes an integrated port controller integrated circuit for routing packets. The integrated circuit includes an interface circuit, a received packets circuit, a buffer manager circuit for receiving data packets from the received packets circuit and transmitting data packets in one or more buffers and reading data packets from the one or more buffers. The integrated circuit also includes a rate shaper counter for storing credit for a traffic class, so that the integrated circuit can support input and/or output rate shaping. The integrated circuit may be associated with an IRAM, a CAM, a parameter memory configured to hold routing and/or switching parameters, which may be implemented as a PRAM, and an aging RAM, which stores aging information. The aging information may be used by a CPU coupled to the integrated circuit via a system interface circuit to remove entries from the CAM and/or the PRAM when an age count exceeds an age limit threshold for the entries.

Title
Flexible method for processing data packets in a network routing system for enhanced efficiency and monitoring capability
Application Number
10/140752
Publication Number
7468975 (B1)
Application Date
May 6, 2002
Publication Date
December 23, 2008
Inventor
Ian Edward Davis
Fremont
CA, US
Agent
Townsend and Townsend and Crew
Assignee
Foundry Networks
CA, US
IPC
G06F 15/173
H04L 12/56
H04L 12/28
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