CN107769961A - A kind of SDN controllers cluster and network system - Google Patents
A kind of SDN controllers cluster and network system Download PDFInfo
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- CN107769961A CN107769961A CN201710827117.0A CN201710827117A CN107769961A CN 107769961 A CN107769961 A CN 107769961A CN 201710827117 A CN201710827117 A CN 201710827117A CN 107769961 A CN107769961 A CN 107769961A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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Abstract
The invention belongs to communication technical field, specifically discloses a kind of SDN controllers cluster and network system, and the SDN controller clusters include：SDN controller groups；And caching server group, for correspondingly storing the control data of SDN controller groups according to the search rule configured in SDN controller groups, wherein control data comprises at least configuration information, control rule, routing iinformation and topological data.A kind of SDN controllers cluster provided by the invention and network system, using control logic and the data storage separation SDN controllers, data storage is uniformly placed on a distributed cache system, each SDN controllers only have control logic without data storage, so when needing large-scale SDN controllers cluster, the redundancy of data does not increase all the time, different SDN control datas can also be stored on different caching systems, realize the lateral magnification of data storage.
Description
Technical field
The present invention relates to communication technical field, and in particular to a kind of SDN controllers cluster and network system.
Background technology
SDN controllers are the cores of SDN (Software Defined Network, software defined network) network, mainly
It is responsible for the centralization control to whole SDN, has for assurance the whole network resource view, improvement Internet resources delivery quality non-
Often important effect.
Existing SDN controllers are that control logical sum data (such as configuration information, control rule, routing iinformation) are placed on
Stored together, that is to say, that each SDN controllers have oneself independent data storage.Needed when in a network
It is very convenient when configuring several SDN controllers, it is only necessary to which that these SDN controllers are configured to cluster, each SDN controls
The data of device processed all can be replicated mutually, ensure its high availability.But when needing large-scale SDN controllers cluster, each
The data of SDN controllers mutually replicate, and may result in very big data redundancy, how many SDN controllers, with regard to how many part
Redundancy.
The content of the invention
The present invention provides a kind of SDN controllers cluster and network system, extensive in SDN in the prior art to solve
SDN controller clusters in SDN controllers easily there is the problem of larger data redundancy.
In a first aspect, the present invention provides a kind of SDN controllers cluster, including：
SDN controller groups；And
Caching server group, for storing the SDN controllers according to the search rule configured in the SDN controllers group
The control data of group, wherein the control data comprises at least configuration information, control rule, routing iinformation and topological data.
As the preferred embodiment of first aspect present invention, the SDN controllers group is including a main SDN controller and at least
One, from SDN controllers, connects wherein establishing heartbeat between the main SDN controllers and the controller from SDN.
As the preferred embodiment of first aspect present invention, the caching server group includes at least one caching server,
Established and connected by trunking mode between wherein described caching server.
As the preferred embodiment of first aspect present invention, hard disk is configured in the caching server, institute is stored for synchronous
State the control data of the SDN controllers group stored in caching server.
As the preferred embodiment of first aspect present invention, the search rule is set according to hash algorithm, so as to by institute
The control data for stating SDN controller groups is correspondingly stored in one or more caching server group.
Second aspect, the present invention also provide a kind of SDN system, including：
At least one group of switches, it includes at least one interchanger；
At least one SDN controllers group, for controlling the group of switches；
At least one caching server group, for according to the search rule storage configured in the SDN controllers group
The control data of SDN controller groups, wherein the control data comprises at least configuration information, control rule, routing iinformation and opened up
Flutter data.
As the preferred embodiment of second aspect of the present invention, the SDN controllers group is including a main SDN controller and at least
One, from SDN controllers, connects wherein establishing heartbeat between the main SDN controllers and the controller from SDN.
As the preferred embodiment of second aspect of the present invention, the caching server group includes at least one caching server,
Established and connected by trunking mode between wherein described caching server.
As the preferred embodiment of second aspect of the present invention, hard disk is configured in the caching server, institute is stored for synchronous
State the control data in the SDN controllers stored in caching server.
A kind of SDN controllers cluster provided by the invention and network system, using the control logic sum SDN controllers
Separate, i.e., be uniformly placed on data storage on one distributed cache system, each SDN controllers only have control logic according to storage
Without data storage, so when needing large-scale SDN controllers cluster, the redundancy of data does not increase all the time, may be used also
So that different SDN control datas are stored on different caching systems, the lateral magnification of data storage is realized.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structured flowchart of SDN controllers cluster one embodiment provided in an embodiment of the present invention；
Fig. 2 is a kind of structured flowchart of SDN system one embodiment provided in an embodiment of the present invention；
Fig. 3 is a kind of structural representation of SDN system one embodiment provided in an embodiment of the present invention.
Embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, it should all belong to the model that the present invention protects
Enclose.
The embodiment of the invention discloses a kind of SDN controllers cluster, shown in reference picture 1, it includes：
SDN controllers group 101；
Caching server group 102, for storing SDN controller groups according to the search rule configured in SDN controller groups
Control data, wherein control data comprise at least configuration information, control rule, routing iinformation and topological data.
In the present embodiment, the control logic of each SDN controllers and control data separation in SDN controllers group, including
Control data including configuration information, control rule, routing iinformation and topological data is uniformly stored in caching server group,
Only has control logic in SDN controllers.Because control data is all stored in caching server group, each SDN controllers
Between need not mutually copy data, so when multiple SDN controllers clusters, the data of each SDN controllers will not be mutual
Replicate, the situation for data redundancy occur would not be caused.
Preferably, SDN controllers group 101 includes a main SDN controller 1011 and at least one from SDN controllers
1012, wherein main SDN controllers and from established between SDN controllers heartbeat connection.
Heartbeat is connected as a kind of connection mechanism, for monitoring the communications status of each SDN controllers.In the mechanism, build
One " heartbeat " will be sent every the set time to other side by having found two SDN controllers of heartbeat connection, and " heartbeat " is
One customized structure, can be heartbeat packet or heartbeat frame.Two SDN controllers of heartbeat connection are established by right
Side sends " heartbeat ", other side oneself still normal work is informed, to ensure the validity of each SDN controllers.
Under normal circumstances, externally serviced by main SDN controllers, main SDN controllers report itself by heartbeat mechanism
Situation, and monitor other from the heartbeat signal of SDN controllers to detect whether other side breaks down.When main SDN controllers are sent out
During raw failure, switching signal is sent from SDN controllers, switching exports, and does not influence the normal operation of whole equipment.
Preferably, caching server group 102 includes at least one caching server 1021, wherein caching server 1021 it
Between pass through trunking mode establish connection.
This connected mode is used between each caching server, caching server group can be made to reach High Availabitity.It is each
Request can be shared in different caching servers with load sharing between caching server.
It is further preferred that hard disk is configured in caching server 1022, for what is stored in synchronous memory buffers server
The control data of SDN controller groups.
The control data for the SDN controller groups being stored in caching server is further synchronously stored in a hard disk, can
To obtain the data of persistence, satisfaction uses needs.
Preferably, the search rule configured in SDN controller groups is set according to hash algorithm, so as to which SDN be controlled
The control data of device group is correspondingly stored in one or more caching server group.
So, with very well ordered the corresponding storage of control data in SDN controller groups can be delayed to one or more
Deposit in server group, each caching server group each ensures the High Availabitity and read and write abruption of data.
The embodiment of the invention discloses a kind of SDN system, shown in reference picture 2, including：
At least one group of switches 201, it includes at least one interchanger；
At least one SDN controllers group 202, for controlling group of switches；
At least one caching server group 203, for according to the search rule storage SDN controls configured in SDN controller groups
The control data of device group processed, wherein control data comprise at least configuration information, control rule, routing iinformation and topological data.
In the present embodiment, the control data in the SDN controller groups that will control group of switches is uniformly stored in caching clothes
In device group of being engaged in, data need not be mutually copied between each SDN controllers in group, so when multiple SDN controllers clusters, often
The data of individual SDN controllers will not be replicated mutually, would not cause the situation for data redundancy occur.So as to whole SDN system
System, once such as the interchanger network equipment continues to increase, can increase SDN controllers newly to manage these networks with lateral magnification
Equipment, and the data of these network equipments are corresponded to indirectly and stored in a caching server group, greatly improve SDN
The performance of network.
In the present embodiment, the network switching equipment of the interchanger as whole network, different regions is segmented into, not same district
Respective switch in domain is all attached with a SDN controller group, to ensure the high availability of SDN controllers.
Control data in SDN controller groups had both included the data of respective switch group, such as configuration information, control rule
With routing iinformation etc., it is included in the data calculated in group of switches on the basis of data, such as topological data etc. again.
Preferably, SDN controllers group 202 includes a main SDN controller and at least one from SDN controllers, wherein main
SDN controllers and from established between SDN controllers heartbeat connection.
Preferably, caching server group 203 includes at least one caching server, wherein passes through collection between caching server
Group's mode establishes connection.
It is further preferred that hard disk is configured in caching server, for the control stored in synchronous memory buffers server
Data.
The control data being stored in caching server is further synchronously stored in a hard disk, persistence can be obtained
Data, satisfaction use needs.
The search rule configured in SDN controller groups is set according to hash algorithm, so as to by the control of SDN controller groups
Data processed are correspondingly stored in one or more caching server group.
So, with very well ordered the corresponding storage of control data in SDN controller groups can be delayed to one or more
Deposit in server group, each caching server group each ensures the High Availabitity and read and write abruption of data.
SDN controllers group is searched caching server group using hash algorithm as route, such as SDN system
In have 3 caching server groups, then the zone number mod 3 where group of switches can be divided exactly caching server to try to achieve
Remainder after the number of group, and then go with the remainder numbering of corresponding caching server group.
During SDN system lateral magnification, SDN controllers can be increased newly to manage these network equipments, and newly-increased one
A little caching server groups, need to only change the concrete numerical value of the N in above-mentioned hash algorithm in mod N, N is SDN system
The number of caching server group in system, while data are migrated.
Fig. 3 is a kind of structural representation of specific SDN system provided in an embodiment of the present invention, in order to preferably manage
Above-described embodiment is solved, will be illustrated below by taking the concrete application scene of a SDN system as an example.
As shown in figure 3, the multiple switch in whole network system is divided into different regions, the friendship in each region
Change planes to correspond to and be controlled by a SDN controller group.Each SDN controllers group respectively sets a main SDN controller and one
It is individual to be connected from SDN controllers, main SDN controllers and from heartbeat is established between SDN controllers.When detecting main SDN controllers hair
During raw failure, switching signal, switching output are sent from SDN controllers.Multiple caching servers are also provided with caching server group,
Established and connected by trunking mode between each caching server, each caching server group each ensures the High Availabitity of data
Property.
SDN controllers group is searched caching server group using hash algorithm as route, in this SDN system
There are 3 caching server groups, then the group # where interchanger or zone number mod 3 can be divided exactly caching clothes to try to achieve
Remainder after the number for device group of being engaged in, and then go with the remainder numbering of corresponding caching server group.Such as the area of a certain group of switches
When Field Number is 1,1 is obtained after 1mod 3, then the numbering of the caching server group found is 1, then corresponds to data and deposit indirectly
Store up in the caching server group that numbering is 1；Similarly, when such as the zone number of a certain group of switches is 2,2 are obtained after 2mod 3,
The numbering of the caching server group then found is 2, then by the corresponding caching server group that storage is 2 to numbering indirectly of data
In；When zone number such as a certain group of switches is 3,0 is obtained after 3mod 3, then the numbering of the caching server group found is
0, then by the data caching server group that storage is 0 to numbering corresponding indirectly.By that analogy, when the region of a certain group of switches
When numbering is 4,1 is obtained after 4mod 3, then the numbering of the caching server group found is 1, then also corresponds to data and deposit indirectly
Store up in the caching server group that numbering is 1, corresponding two interchangers of storage indirectly in the caching server group that so numbering is 1
The data of group.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in some embodiment
The part of detailed description, it may refer to the associated description of other embodiment.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (9)
- A kind of 1. SDN controllers cluster, it is characterised in that including：SDN controller groups；AndCaching server group, for correspondingly storing the SDN controllers according to the search rule configured in the SDN controllers group The control data of group, wherein the control data comprises at least configuration information, control rule, routing iinformation and topological data.
- 2. SDN controllers cluster according to claim 1, it is characterised in that the SDN controllers group includes a master SDN controllers and at least one from SDN controllers, wherein establishing the heart between the main SDN controllers and the controller from SDN Jump connection..
- 3. SDN controllers cluster according to claim 1, it is characterised in that the caching server group includes at least one Individual caching server, connected wherein being established between the caching server by trunking mode.
- 4. SDN controllers cluster according to claim 3, it is characterised in that hard disk is configured in the caching server, is used In the control data for synchronously storing the SDN controllers group stored in the caching server.
- 5. SDN controllers cluster according to claim 1, it is characterised in that the search rule according to hash algorithm come Set, so as to which the control data of the SDN controllers group is correspondingly stored in one or more caching server group.
- A kind of 6. SDN system, it is characterised in that including：At least one group of switches, it includes at least one interchanger；At least one SDN controllers group, for controlling the group of switches；At least one caching server group, controlled for storing the SDN according to the search rule configured in the SDN controllers group The control data of device group processed, wherein the control data comprises at least configuration information, control rule, routing iinformation and topological Numbers According to.
- 7. SDN system according to claim 6, it is characterised in that the SDN controllers group includes a main SDN Controller and at least one from SDN controllers, wherein establishing heartbeat between the main SDN controllers and the controller from SDN Connection.
- 8. SDN system according to claim 6, it is characterised in that the caching server group includes at least one Caching server, connected wherein being established between the caching server by trunking mode.
- 9. SDN system according to claim 8, it is characterised in that configure hard disk in the caching server, be used for It is synchronous to store the control data stored in the caching server.
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Application publication date: 20180306 |