CN109218224A - A kind of efficient and expansible IP data packet classification method - Google Patents
A kind of efficient and expansible IP data packet classification method Download PDFInfo
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- CN109218224A CN109218224A CN201811229945.5A CN201811229945A CN109218224A CN 109218224 A CN109218224 A CN 109218224A CN 201811229945 A CN201811229945 A CN 201811229945A CN 109218224 A CN109218224 A CN 109218224A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2441—Traffic characterised by specific attributes, e.g. priority or QoS relying on flow classification, e.g. using integrated services [IntServ]
Abstract
It is disclosed by the invention to belong to Computer Science and Technology technical field, specially a kind of efficient and expansible IP data packet classification method, the efficient and expansible IP data packet classification method includes the following steps: S1: algorithm pretreatment: purpose/source IP, purpose/source port and protocol domain being connected into Bit String, totally 104 bit；S2: clash handle: establishing Hash bucket, then carries out the processing to conflict using zipper method；S3: the generation of pseudo random number the generation of random number: is realized using linear multiplicative congruential method, shift register method, mixing method or Fibonacci method；S4: packet classification emulation, it can ensure that IP data packet carries out wire speed classification, there is no update and structural rearrangements completely in update, only a small amount of incremental update, renewal speed is fast, reduces the time that classification needs, substantially increases classification effectiveness, it can extend to any number of sorting fields, meet classificating requirement.
Description
Technical field
The present invention relates to Computer Science and Technology technical field, specially a kind of efficient and expansible IP data packet point
Class method.
Background technique
The fast development of Internet technology requires the network equipment, especially border networks equipment to support such as tactful road
By, various Differentiated Services applications such as access control, virtual private network, network address translation, load balancing, authentication and accounting, this
A little applications are all based on packet classifier technique.They require the network equipment that can be incited somebody to action according to certain fields in packet header
Data packet is divided into the stream of different identification, to take different operations for different stream, that is, provides different services.Data
The quality of packet classification method and the height of efficiency directly affect the performance of whole network equipment.One typical packet classification
Example be IP route querying, with longest prefix match rule LPM (Longest Prefix Match) search routing table, root
Next hop address is determined according to purpose IP address.There is cannot be to the data packet in high speed network for IP data packet classification method at present
Wire speed classification is carried out, and can not accurately be classified, scalability is poor.For this purpose, it is proposed that a kind of efficient and expansible
IP data packet classification method.
Summary of the invention
The purpose of the present invention is to provide a kind of efficient and expansible IP data packet classification methods, to solve above-mentioned background
The current IP data packet classification method proposed in technology there is cannot to the data packet in high speed network carry out wire speed classification, and
Can not accurately it classify, the problem of scalability difference.
To achieve the above object, the invention provides the following technical scheme: a kind of efficient and expansible IP packet classification
Method, the efficient and expansible IP data packet classification method include the following steps:
S1: algorithm pretreatment: connecting into Bit String for purpose/source IP, purpose/source port and protocol domain, totally 104 bit,
Then 110 bits are averagely divided into 5 blocks, every piece of 22 bits, by one piece of 22 bit map therein to another random space,
Then index value that the random number in another random space is carried out to 22 bits that XOR operation obtains, is finally looked into this 22 bit
It looks for；
S2: clash handle: establishing Hash bucket, then carries out the processing to conflict using zipper method；
S3: it the generation of random number: is realized using linear multiplicative congruential method, shift register method, mixing method or Fibonacci method
The generation of pseudo random number；
S4: packet classification emulation: using random 01 bit stream of 104bit, 01 random bit stream is soft using WinHex
Part generates, and is generated using the function that the random number of WinHex software fixed interval writes memory and generates filtering rule library and emulate defeated
The data entered.
Preferably, the Hash bucket in the step S2 is used to store 22 bit random i lumbers in corresponding random space, bucket
In for packet header Bit String mapping after 22bit random number.
Preferably, the zipper method in the step S2 is searched and the algorithm of insertion is as follows:
Preferably, in the step S3, using linear multiplicative congruential method, citation form is to any initial value integer X0, by
Following recurrence formula determines:
Xi=(α Xi-1+c)modM
ξi=Xi/ M, i=1,2,3 ....
Compared with prior art, the beneficial effects of the present invention are: a kind of efficient and expansible IP number that the invention proposes
According to packet classification method, it can be ensured that IP data packet carries out wire speed classification, and there is no update and structural rearrangements completely in update, only
There is a small amount of incremental update, renewal speed is fast, reduces the time that classification needs, substantially increases classification effectiveness, can extend
To any number of sorting fields, meet classificating requirement.
Detailed description of the invention
Fig. 1 is classification method flow chart of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution: a kind of efficient and expansible IP data packet classification method,
The efficient and expansible IP data packet classification method includes the following steps:
S1: algorithm pretreatment: connecting into Bit String for purpose/source IP, purpose/source port and protocol domain, totally 104 bit,
Then 110 bits are averagely divided into 5 blocks, every piece of 22 bits, by one piece of 22 bit map therein to another random space,
Then index value that the random number in another random space is carried out to 22 bits that XOR operation obtains, is finally looked into this 22 bit
It looks for；
S2: clash handle: establishing Hash bucket, then carries out the processing to conflict using zipper method；
S3: it the generation of random number: is realized using linear multiplicative congruential method, shift register method, mixing method or Fibonacci method
The generation of pseudo random number；
S4: packet classification emulation: using random 01 bit stream of 104bit, 01 random bit stream is soft using WinHex
Part generates, and is generated using the function that the random number of WinHex software fixed interval writes memory and generates filtering rule library and emulate defeated
The data entered.
Wherein, the Hash bucket in the step S2 is used to store 22 bit random i lumbers in corresponding random space, in bucket
For the random number of the 22bit after the mapping of packet header Bit String；
Zipper method in the step S2 is searched and the algorithm of insertion is as follows:
In the step S3, using linear multiplicative congruential method, citation form is to any initial value integer X0, by following recursion
Formula determines:
Xi=(α Xi-1+c)modM
ξi=Xi/ M, i=1,2,3 ....
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of efficient and expansible IP data packet classification method, it is characterised in that: the efficient and expansible IP data packet
Classification method includes the following steps:
S1: algorithm pretreatment: purpose/source IP, purpose/source port and protocol domain are connected into Bit String, totally 104 bit, then
110 bits are averagely divided into 5 blocks, every piece of 22 bits, by one piece of 22 bit map therein to another random space, then
The index value that the random number in another random space is carried out to 22 bits that XOR operation obtains, is finally searched with this 22 bit；
S2: clash handle: establishing Hash bucket, then carries out the processing to conflict using zipper method；
S3: the generation of random number: using linear multiplicative congruential method, shift register method, mixing method or Fibonacci method realize it is pseudo- with
The generation of machine number；
S4: packet classification emulation: using random 01 bit stream of 104bit, 01 random bit stream is produced using WinHex software
It is raw, it is generated using the function that the random number of WinHex software fixed interval writes memory and generates filtering rule library and emulation input
Data.
2. the efficient and expansible IP data packet classification method of one kind according to claim 1, it is characterised in that: the step
Suddenly the Hash bucket in S2 is used to store 22 bit random i lumbers in corresponding random space, after mapping in bucket for packet header Bit String
The random number of 22bit.
3. the efficient and expansible IP data packet classification method of one kind according to claim 1, it is characterised in that: the step
Zipper method in rapid S2 is searched and the algorithm of insertion is as follows:
4. the efficient and expansible IP data packet classification method of one kind according to claim 1, it is characterised in that: the step
In rapid S3, using linear multiplicative congruential method, citation form is to any initial value integer X0, it is determined by following recurrence formula:
Xi=(α Xi-1+c)modM
ξi=Xi/ M, i=1,2,3 ....
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101753445A (en) * | 2009-12-23 | 2010-06-23 | 重庆邮电大学 | Fast flow classification method based on keyword decomposition hash algorithm |
| CN102437950A (en) * | 2011-11-08 | 2012-05-02 | 西安电子科技大学 | High efficient and extensible IP data packet classification method |
| CN104182393A (en) * | 2013-05-21 | 2014-12-03 | 中兴通讯股份有限公司 | Processing method and processing device for keyword mapping based on hash table |
| CN104518984A (en) * | 2014-12-22 | 2015-04-15 | 北京航空航天大学 | SDN controller for carrying out traffic classification on data package based on multiple classifiers |
-
2018
- 2018-10-22 CN CN201811229945.5A patent/CN109218224A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101753445A (en) * | 2009-12-23 | 2010-06-23 | 重庆邮电大学 | Fast flow classification method based on keyword decomposition hash algorithm |
| CN102437950A (en) * | 2011-11-08 | 2012-05-02 | 西安电子科技大学 | High efficient and extensible IP data packet classification method |
| CN104182393A (en) * | 2013-05-21 | 2014-12-03 | 中兴通讯股份有限公司 | Processing method and processing device for keyword mapping based on hash table |
| CN104518984A (en) * | 2014-12-22 | 2015-04-15 | 北京航空航天大学 | SDN controller for carrying out traffic classification on data package based on multiple classifiers |
Non-Patent Citations (1)
| Title |
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| 尚凤军，潘英俊: "基于XOR Hash的快速IP数据包分类算法研究", 《计算机工程与应用》 * |
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Effective date of registration: 20190701 Address after: 330500 No. 8 Qianjin East Road, Fenghuang Development Zone, Anyi County, Nanchang City, Jiangxi Province Applicant after: Nanchang Career Academy Address before: 330500 No. 8 Qianjin East Road, Fenghuang Development Zone, Anyi County, Nanchang City, Jiangxi Province Applicant before: Wang Yaosheng |
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Application publication date: 20190115 |
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