Multiplex communications – Diagnostic testing
Reexamination Certificate
2008-09-26
2010-12-21
Pham, Chi H (Department: 2471)
Multiplex communications
Diagnostic testing
C370S252000, C370S253000, C370S255000, C709S224000, C709S226000, C710S022000
Reexamination Certificate
active
07855967
ABSTRACT:
An apparatus and method for using a direct memory access (“DMA”) to facilitate netflow statistics are disclosed. A network device such as a router or a switch, in one embodiment, includes a statistic component, a local memory, and a memory access controller. The statistic component is configured to gather information relating to net usage from packet flows or netflows in response to corresponding index values or tags. While the local memory such as a cache provides the index values or tags assignable to packet flows, the memory access controller such as a DMA transfers at least a portion of the index values or tags between the local memory and a main memory for enhancing capacity of the local memory.
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Rangavajjhala Venkata
Schaub Marc A.
Faroul Farah
JW Law Group
Pham Chi H
Tellabs San Jose, Inc.
Wu James M.
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