Method and system for realizing Openflow multi-stage flow tables on basis of ternary content addressable memory (TCAM)

A flow table and flow entry technology, applied in the Ethernet field, can solve the problems of low utilization rate of TCAM, difficulty in meeting application requirements, and insufficient storage entries of TCAM flow table, etc., so as to increase the number of storage entries and reduce the manufacturing cost. Effect
CN102843299AInactive Publication Date: 2012-12-26SUZHOU CENTEC COMM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUZHOU CENTEC COMM CO LTD
Publication Date
2012-12-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method and a system for realizing Openflow multi-stage flow tables on the basis of a ternary content addressable memory (TCAM). The method comprises the following steps of: S1, dividing a TCAM table maintained on an Openflow switch into multiple logical flow tables; and S2, setting the matched domain type for each logical flow table. The TCAM table is divided into multiple logical flow tables and the matched field length of each flow table comprises multiple forms, so that storage items of the TCAM table are effectively increased, different application requirements are met and the manufacturing cost of the Openflow switch is effectively reduced.
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Description

technical field

[0001] The invention relates to the technology in the field of Ethernet, in particular to a method and system for realizing Openflow multi-level flow table based on TCAM. Background technique

[0002] At present, the rapid development of the Internet, the huge application scale and the importance of its status are far beyond the imagination of the designers. However, the current Internet mainly has the following disadvantages: there is no unified management, network forwarding mechanism and strategy within a specific scope Single, it is difficult for operators to optimize their own networks to the maximum extent, and the functions and protocols used by traditional switches for forwarding are numerous and complex, difficult to configure, and the system is prone to errors. In order to deal with the above-mentioned disadvantages, people have proposed the Openflow switch, which separates the packet forwarding and forwarding strategy on the traditional switch, and...

Claims

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