Openflow flow table look-up method and device
A flow table and table lookup technology, applied in the field of Ethernet data communication, can solve problems such as expensive resources of TCAM chips, reduced forwarding performance, and design complexity
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[0028] In the embodiment of the present invention, on the control plane, the openflow flow tables at all levels are divided into exact matching flow tables and at least one classification matching flow table according to the key field, and the flow table configuration information issued by the openflow controller is received, and the flow table configuration is performed according to the flow table configuration information. In the key field of information, the flow table configuration information is sent to the exact match flow table or classification match flow table as an entry. On the forwarding plane, all the keywords of the packet are used to look up the exact match flow table. When a matching table item is found, the message is processed according to the function of the table item; when no matching table item is found, keywords in different keyword fields of the message are extracted and the at least one classification matching flow table is performed Parallel table look...
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