Inventors:
Rina Panigrahy - Sunnyvale CA, US
Jackie Liu - Sunnyvale CA, US
Daniel Yu-Kwong Ng - San Jose CA, US
Sanjay Jain - Santa Clara CA, US
Nagaraj A. Bagepalli - San Jose CA, US
Abhijit Patra - San Jose CA, US
Assignee:
Cisco Technology, Inc. - San Jose CA
International Classification:
H04L 12/56
H04J 1/16
US Classification:
370252, 370238, 370254, 370389
Abstract:
The present invention provides a packet processing device and method. A parsing processor provides instruction-driven content inspection of network packets at 10-Gbps and above with a parsing engine that executes parsing instructions. A flow state unit maintains statefulness of packet flows to allow content inspection across several related network packets. A state-graph unit traces state-graph nodes to keyword indications and/or parsing instructions. The parsing instructions can be derived from a high-level application to emulate user-friendly parsing logic. The parsing processor sends parsed packets to a network processor unit for further processing.