Switch-based network processor

H - Electricity – 04 – L

Patent

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Details

H04L 12/00 (2006.01) H04L 12/26 (2006.01) H04L 12/56 (2006.01) H04L 29/06 (2006.01) H04L 29/08 (2006.01)

Patent

CA 2428261

A switch-based network processor is disclosed. The switch-based network processor includes a packet parser, search and modification scheduler that parses a data packet, develops a search for a processing rule associated with the packet, and schedules a modification to be performed on the packet based on the rule. The processor also includes several search resources that each can search simultaneously for a processing rule. Multiple packet modifiers are included to modify several packets simultaneously. a core switch is also provided to switch search requests from the parser to the search resources, to switch search responses from the search resources to the parser, and to switch modification requests and responses between the parser and packet modifiers. The switch-based processor also includes a session state storage device that can be used to allow the processor to be aware of a session.

L'invention porte sur un commutateur de réseau à base d'un commutateur qui comprend un analyseur de paquets, un programmateur de recherche et de modification qui analyse un paquet de données, développe une recherche pour une règle de traitement associée au paquet, et programme une modification à effectuer sur le paquet sur la base de la règle. Le processeur comprend également plusieurs ressources de recherche qui peuvent rechercher chacune simultanément une règle de traitement. Plusieurs modificateurs de paquets permettent de modifier simultanément plusieurs paquets. Un commutateur central permet de commuter des demandes de recherche de l'analyseur aux ressources de recherche, de commuter des réponses des ressources de recherche à l'analyseur et de commuter des demandes de modification et des réponses entre l'analyseur et les modificateurs de paquets. Le processeur à base de commutateur comprend également une mémoire d'état de session qui peut être utilisée pour que le processeur puisse reconnaître une session.

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