CN106357535A - Issuing method, system and controller of SDN flow table - Google Patents
Issuing method, system and controller of SDN flow table Download PDFInfo
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- CN106357535A CN106357535A CN201610749407.3A CN201610749407A CN106357535A CN 106357535 A CN106357535 A CN 106357535A CN 201610749407 A CN201610749407 A CN 201610749407A CN 106357535 A CN106357535 A CN 106357535A
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- Prior art keywords
- flow table
- sdn
- packet
- data base
- local data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/38—Flow based routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses an issuing method, system and controller of SDN flow table, comprising the following steps: calculating the flow table in advance, and storing in the local database; getting the data packet sent by the switch, and matching the data packet with the flow table in the local database; when matching the flow table corresponding to the data packet, invoking the flow table corresponding to the data packet from the local database and issuing to the switch. The embodiment of invention further provides an issuing device and controller of SDN flow table. Adopting the embodiment of the issuing method, system and controller of SDN flow table not just optimizes flow table storage resources of the switch, but improves issuing efficiency of the flow table.
Description
Technical field
The present invention relates to communication technical field, more particularly, to a kind of sdn flow table issuance method, system and controller.
Background technology
Software defined network (software-defined networking, sdn) is a kind of new network architectural framework.
The packet repeating process that sdn framework will originally be completed by switch, router completely, be converted into by openflow switch and
The self-contained process that controller is respectively completed, realizes separating network device control plane with datum plane, have can simultaneously
The characteristic of programming, makes underlying infrastructure be conceptualized as application program and network service, it is achieved thereby that network traffics is flexible
Control.
Sdn controller, as a kind of operating system of network, is responsible for, policy development etc., guarantees network intelligence with this
Change, and switch is only responsible for expeditiously forwarding data, the foundation of its data forwarding is exactly flow table.Under the flow table of sdn controller
Sending out has actively and passively both of which, and they have respective feature.The flow table issuance pattern of active utilizes pre-set
Rule calculates substantial amounts of flow table issuance to switch；After packet reaches switch, switch first carries out flow table
Join, further according to corresponding flow table item, packet is made with corresponding process action；Passive flow table issuance pattern then be for by
Each packet setting work that switch uploads, formulates and issues flow table.
Content of the invention
From the foregoing, in the flow table issuance pattern of existing sdn controller, the flow table issuance pattern of active considers number
According to the multiformity of stream, some flow table items are to configure in order to some specific questions occur, and its utilization rate ratio is relatively low, generally idle
On switches, consume the storage resource of switch；And though passive flow table issuance pattern can more effectively utilize switch
On flow table storage resource, but in processing procedure, the extra flow table setting time can be increased, the efficiency of its flow table issuance is not
High.
For the problems referred to above, it is an object of the invention to provide a kind of sdn flow table issuance method, system and controller, no
Only optimize the flow table storage resource of switch, also improve flow table issues efficiency.
The present invention provides a kind of sdn flow table issuance method, comprises the steps:
Precalculate flow table, and store in local data base；
Obtain the packet that switch sends, and the flow table in described packet and described local data base is carried out
Join；
When matching flow table corresponding with described packet, call from described local data base and described packet phase
The flow table answered simultaneously is handed down to described switch.
In technique scheme, by precalculating flow table, and store in the local database；When sdn network starts to transport
When making, obtain the packet that switch sends, and described packet is mated with the flow table in described local data base；?
When the match is successful, call the flow table of coupling from described local data base and be handed down to described switch；Not only optimize exchange
The flow table storage resource of machine, also improve flow table issues efficiency.
Preferably, when not matching flow table corresponding with described packet, it is that described packet configures new flow table simultaneously
It is handed down to described switch.
Preferably, described new flow table is sent in described local data base and is stored.
Preferably, described local data base adopts mysql data base.
The present invention also provides a kind of sdn flow table issuance device, comprising:
Flow table management module, is used for precalculating flow table, and stores in local data base；
Flow table matching module, for obtaining the packet of switch transmission, and by described packet and described local data
Flow table in storehouse is mated；
Flow table sending module, for when matching flow table corresponding with described packet, from described local data base
Call flow table corresponding with described packet and be handed down to described switch.
In technique scheme, described flow table management module precalculates flow table, and stores in the local database；When
When sdn network comes into operation, described flow table matching module obtains the packet that switch sends, and by described packet with described
Flow table in local data base is mated；When the match is successful, described flow table sending module is adjusted from described local data base
With coupling flow table and be handed down to described switch；Not only optimize the flow table storage resource of switch, also improve flow table
Issue efficiency.
Preferably, described sdn flow table issuance device also includes:
Flow table configuration module, for when not matching flow table corresponding with described packet, being described packet configuration
New flow table, and be sent to described flow table sending module so that described flow table sending module by described new flow table issuance to institute
State switch.
Preferably, described flow table configuration module, is additionally operable to be sent in described local data base by described new flow table
Row storage.
Preferably, described sdn flow table issuance device carries out data interaction using openflow agreement and described switch.
The present invention also provides a kind of controller, and described controller comprises sdn flow table issuance device described above.
Sdn flow table issuance method, system and controller that the present invention provides, have the advantages that by counting in advance
Calculate flow table, and store in the local database；When sdn network comes into operation, obtain the packet that switch sends, and by institute
State packet to be mated with the flow table in described local data base；When the match is successful, call from described local data base
The flow table of coupling is simultaneously handed down to described switch.The technical scheme being provided using the present invention, not only optimizes the flow table of switch
Storage resource, also improve flow table issues efficiency.
Brief description
In order to be illustrated more clearly that technical scheme, below by the accompanying drawing work to use required in embodiment
Simply introduce it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the embodiment of sdn flow table issuance method that the present invention provides.
Fig. 2 is the structural representation of the embodiment of sdn flow table issuance device that the present invention provides.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 1, the present invention provides an a kind of embodiment of sdn flow table issuance method, including step s11～s13,
Specific as follows:
S11, precalculates flow table, and stores in local data base.
Specifically, calculate flow table using pre-set rule, and store in local data base.Preferably,
Described local data base adopts mysql data base.Mysql is a kind of Relational DBMS of open source code, can
Have cost to substantially reduce.Mysql can either apply in client server network ring as a single application program
In border；Can be used as a storehouse and be embedded in other softwares and multilingual support is provided, such as c#, java, python,
Perl, tcl etc.；The operating system of windows/linux/unix etc. main flow can also be supported.It is because its inquiry quickly
Speed, high reliability and adaptability, become a preferable selection for managing, checking, optimizing database manipulation.Certainly,
Described local data base may also be employed other data bases, and, all within protection scope of the present invention, here is not limited for these.
S12, obtains the packet that switch sends, and described packet is carried out with the flow table in described local data base
Coupling.
Specifically, first, the packet that desampler sends, and obtain the matching field of described packet；Wherein, institute
State matching field comprise source/destination mac (media access control, media access control) address, ethernet type,
Vlan (virtual local area network, VLAN) id, source/destination ip address, ip agreement, ip tos
(type-of-service, COS) and source/destination tcp/udp port；Then, classified according to described matching field
Distinguish；Finally, flow table coupling is carried out to packet described in each class using pipeline processes technology；Wherein, at described streamline
Reason technology is that well known to those skilled in the art, the present invention does not repeat.
It is understood that this step can also carry out flow table coupling using additive method, these are all the present invention's
Within protection domain, the present invention is not particularly limited.
S13, when matching flow table corresponding with described packet, calls and described data from described local data base
Wrap corresponding flow table and be handed down to described switch.
Preferably, described switch supports openflow agreement.
In one embodiment of the invention, described sdn flow table issuance method also includes: when not matching and described data
When wrapping corresponding flow table, it is that described packet configures new flow table and is handed down to described switch.
In another embodiment of the present invention, described sdn flow table issuance method also includes: when not matching and described number
During according to wrapping corresponding flow table, it is that described packet is formulated new flow table and is handed down to described switch；And by described new flow table
It is sent in described local data base and stored.
To sum up, sdn flow table issuance method provided in an embodiment of the present invention, by precalculating flow table, and is stored in local
In data base；When sdn network comes into operation, obtain the packet that switch sends, and described packet is local with described
Flow table in data base is mated；When the match is successful, call the flow table of coupling from described local data base and be handed down to
Described switch；Not only optimize the flow table storage resource of switch, also improve flow table issues efficiency.
Further, the embodiment of the present invention also provides a kind of sdn flow table issuance device, and executable above-described embodiment provides
All flow processs of sdn flow table issuance method.
Refer to Fig. 2, be the structural representation of the embodiment of sdn flow table issuance device that the present invention provides.
The embodiment of the present invention provides a kind of sdn flow table issuance device 20, including flow table management module 21, flow table matching module
22 and flow table sending module 23, specific as follows:
Described flow table management module 21, is used for precalculating flow table, and stores in local data base.
Preferably, described local data base adopts mysql data base.
Described flow table matching module 22, for obtain switch transmission packet, and by described packet with described
Flow table in ground data base is mated.
Described flow table sending module 23, for when matching flow table corresponding with described packet, from described local number
According to calling flow table corresponding with described packet in storehouse and be handed down to described switch.
Preferably, described sdn flow table issuance device carries out data interaction using openflow agreement and described switch.
In one embodiment of the invention, described sdn flow table issuance device 20 also includes:
Flow table configuration module 24, for when not matching flow table corresponding with described packet, being that described packet is joined
Put new flow table, and be sent to described flow table sending module, so that described new flow table issuance is given by described flow table sending module
Described switch.
In another embodiment of the present invention, described flow table configuration module 24, is additionally operable to send described new flow table
Stored in described local data base.
It is understood that the function of each functional module of sdn flow table issuance device 20 in the embodiment of the present invention can root
Implement according to the method in said method embodiment, it implements process and is referred to the correlation of said method embodiment retouches
State, here is omitted.
Additionally, the embodiment of the present invention also provides a kind of controller.Described controller comprises sdn flow table issuance dress described above
Put 20.
Sdn flow table issuance method provided in an embodiment of the present invention, device and controller, have the advantages that and pass through
Precalculate flow table, and store in the local database；When sdn network comes into operation, obtain the packet that switch sends,
And described packet is mated with the flow table in described local data base；When the match is successful, from described local data base
In call the flow table of coupling and be handed down to described switch.The technical scheme being provided using the present invention, not only optimizes switch
Flow table storage resource, also improve flow table issues efficiency.
Above disclosed be only a kind of preferred embodiment of the present invention, certainly the power of the present invention can not be limited with this
Sharp scope, one of ordinary skill in the art will appreciate that realize all or part of flow process of above-described embodiment, and according to present invention power
Profit requires made equivalent variations, still falls within the scope that invention is covered.
One of ordinary skill in the art will appreciate that realizing all or part of flow process in above-described embodiment method, it is permissible
Instruct related hardware to complete by computer program, described program can be stored in a computer read/write memory medium
In, this program is upon execution, it may include as the flow process of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (read-only memory, rom) or random access memory (random access
Memory, ram) etc..
Claims (9)
1. a kind of sdn flow table issuance method is it is characterised in that comprise the steps:
Precalculate flow table, and store in local data base；
Obtain the packet that switch sends, and described packet is mated with the flow table in described local data base；
When matching flow table corresponding with described packet, call corresponding with described packet from described local data base
Flow table is simultaneously handed down to described switch.
2. sdn flow table issuance method as claimed in claim 1 is not it is characterised in that ought match corresponding to described packet
Flow table when, be the new flow table of described packet configuration and be handed down to described switch.
3. sdn flow table issuance method as claimed in claim 2 is it is characterised in that also include:
Described new flow table is sent in described local data base and is stored.
4. sdn flow table issuance method as claimed in claim 1 is it is characterised in that described local data base adopts mysql data
Storehouse.
5. a kind of sdn flow table issuance device is it is characterised in that include:
Flow table management module, is used for precalculating flow table, and stores in local data base；
Flow table matching module, for obtaining the packet of switch transmission, and by described packet and described local data base
Flow table mated；
Flow table sending module, for when matching flow table corresponding with described packet, calling from described local data base
Flow table corresponding with described packet is simultaneously handed down to described switch.
6. sdn flow table issuance device as claimed in claim 5 is it is characterised in that described sdn flow table issuance device also includes:
Flow table configuration module is new for when not matching flow table corresponding with described packet, being described packet configuration
Flow table, and it is sent to described flow table sending module, so that described new flow table issuance is given described friendship by described flow table sending module
Change planes.
7. sdn flow table issuance device as claimed in claim 6 is it is characterised in that described flow table configuration module is additionally operable to:
Described new flow table is sent in described local data base and is stored.
8. the sdn flow table issuance device as described in any one of claim 5～7 is it is characterised in that described sdn flow table issuance fills
Put and data interaction is carried out using openflow agreement and described switch.
9. a kind of controller is it is characterised in that described controller comprises under the sdn flow table as described in any one of claim 5～8
Transmitting apparatus.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749407.3A CN106357535A (en) | 2016-08-29 | 2016-08-29 | Issuing method, system and controller of SDN flow table |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749407.3A CN106357535A (en) | 2016-08-29 | 2016-08-29 | Issuing method, system and controller of SDN flow table |
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| CN106357535A true CN106357535A (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610749407.3A Pending CN106357535A (en) | 2016-08-29 | 2016-08-29 | Issuing method, system and controller of SDN flow table |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107395510A (en) * | 2017-08-29 | 2017-11-24 | 迈普通信技术股份有限公司 | Improve the method, apparatus and the network equipment of circulation volatility |
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| CN104283785A (en) * | 2014-10-29 | 2015-01-14 | 杭州华三通信技术有限公司 | Method and device for processing flow table rapidly |
| CN104348716A (en) * | 2013-07-23 | 2015-02-11 | 杭州华三通信技术有限公司 | Message processing method and equipment |
| CN104506511A (en) * | 2014-12-15 | 2015-04-08 | 蓝盾信息安全技术股份有限公司 | Moving target defense system and moving target defense method for SDN (self-defending network) |
| CN105187325A (en) * | 2015-10-27 | 2015-12-23 | 上海斐讯数据通信技术有限公司 | SDN flow table management method, SDN flow table management system and switchboard |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104348716A (en) * | 2013-07-23 | 2015-02-11 | 杭州华三通信技术有限公司 | Message processing method and equipment |
| CN104283785A (en) * | 2014-10-29 | 2015-01-14 | 杭州华三通信技术有限公司 | Method and device for processing flow table rapidly |
| CN104506511A (en) * | 2014-12-15 | 2015-04-08 | 蓝盾信息安全技术股份有限公司 | Moving target defense system and moving target defense method for SDN (self-defending network) |
| CN105187325A (en) * | 2015-10-27 | 2015-12-23 | 上海斐讯数据通信技术有限公司 | SDN flow table management method, SDN flow table management system and switchboard |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107395510A (en) * | 2017-08-29 | 2017-11-24 | 迈普通信技术股份有限公司 | Improve the method, apparatus and the network equipment of circulation volatility |
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