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Network communication fast matching method and equipment based on table lookup operation

A technology of network communication and matching method, which is applied in the field of fast matching of network communication based on look-up table operation, and can solve the problems of high power consumption, high cost, and complex hardware design of TCAM chips

Active Publication Date: 2018-11-23
电信科学技术第五研究所有限公司
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Problems solved by technology

For example: TCAM space size limits the number of rule entries, high cost, high power consumption of TCAM chip and complex hardware design

Method used

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  • Network communication fast matching method and equipment based on table lookup operation

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Embodiment Construction

[0035] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0036] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0037] The present invention provides a network communication fast matching method based on table look-up operation, the method comprising:

[0038] Generate a two-dimensional rule table according to user needs, the A axis of the two-dimensional rule table represents the number of rule entries, the B axis represents the value of each byte in the rule, and the value of the B axis is in units of bytes and according to the number of bytes The order is arranged sequentially, and the method for generating...

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Abstract

The invention discloses a network communication fast matching method and equipment based on table lookup operation. The method comprises the following steps: generating a two-dimensional rule table according to user demand, wherein the A axis of the 2D rule table represents the rule number of entries, the B axis represents the value of each byte in the rule, and the values of the B axis take the byte as the unit, and are orderly arranged according to the byte order; acquiring the data needing to be matched in the network communication process; and performing matching between the data needing to the matched and the 2D rule table; and judging whether a rule is hit according to a matching result. Through the fast matching method disclosed by the invention, the matching between the specific field and the rule table set by the user can be fast realized, thereby improving the efficiency of related equipment in the rule matching.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a method and device for fast matching of network communication based on table look-up operation. Background technique [0002] In network communication technology, it plays an important role in identifying and matching the character end of business data packets. For example, in the field of intrusion detection, the network communication blacklist or whitelist configured by the system can monitor the network information entering the network equipment. Thereby identifying normal network communication and illegal network communication. Its core is to extract the five-tuple (source IP, destination IP, source port, destination port, protocol type) of network communication and compare it with the black and white lists configured in the system. With the improvement of network communication bandwidth, the performance of rule matching is also further improved. At the same time, the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/743H04L29/06
CPCH04L63/1408H04L45/74591
Inventor 翟大海王瑞段张钰邓莉
Owner 电信科学技术第五研究所有限公司
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