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Method and device for expanding ipfix entries by using acl

A technology of IPFIX and table items, which is applied in the field of using ACL to expand IPFIX table items, which can solve the problems of unable to meet the requirements of flow table specifications in the network and insufficient storage space

Active Publication Date: 2021-11-26
SUZHOU CENTEC COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The IPFIX engine is used to learn new flows and count the number of packets of old flows. However, the IPFIX engine of the existing chips does not have much storage space for storing flow information, which cannot meet the specification requirements of flow tables in the network.

Method used

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  • Method and device for expanding ipfix entries by using acl
  • Method and device for expanding ipfix entries by using acl
  • Method and device for expanding ipfix entries by using acl

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Embodiment Construction

[0041] The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

[0042] In view of the storage space of ACL (Access Control List) in the chip, the present invention proposes a method and device for expanding IPFIX entries by using ACL, which can meet the specification requirements for IPFIX entries in network operation. In the specific implementation process of the present invention, the behavior of learning new flow and updating old flow message quantity in the IPFIX engine is split: the IPFIX engine learns the new flow and sends the message feature to the CPU through DMA (direct memory access) at the same time, if the message If it is successfully uploaded to the ...

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Abstract

The present invention provides a method and device for utilizing ACL to expand IPFIX table items, said method comprising: S1, when monitoring that a message passes through a chip, acquiring message characteristics; S2, reading IPFIX engine storage space with message characteristics, And report the corresponding flow table to the CPU according to the reading result; S3. After the CPU receives the flow table, it sends the flow table to the ACL engine; S4. When the ACL engine confirms that the flow table is received, the CPU controls the IPFIX engine to delete its The corresponding flow table in the storage space. The method and device for expanding IPFIX table items by using ACL of the present invention utilize the hardware resources of the existing chip, and by splitting the learning process and message statistics process of the IPFIX engine, use ACL to realize message statistics, effectively expanding IPFIX table items .

Description

technical field [0001] The invention belongs to the field of communication design, and mainly relates to a method and a device for expanding IPFIX entries by using ACL. Background technique [0002] With the rise of communication services, networks based on traffic charging or traffic engineering are widely used in the communication process, for example, carrier network charging. [0003] In the prior art, it is identified as the same flow according to the source IP address in the message, the destination IP address, the destination port number, the source port number, the protocol number and the input interface; IPFIX (abbreviation of IP Flow information Export, literal translation: IP flow Information reporting) can perform statistics on the number of packets based on each flow, so as to realize the application of traffic accounting or traffic engineering. [0004] In the existing chip implementation, the IPFIX engine needs to learn new flows; and calculate the hash value...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/741H04L12/743H04L12/813H04L12/861H04L12/927H04L12/14H04L45/74H04L47/20H04L47/80
CPCH04L47/20H04L45/7453H04L47/80H04L49/9084H04L45/54H04L12/1432
Inventor 赵子苍李磊黄慧芳焦凯
Owner SUZHOU CENTEC COMM CO LTD
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