CN104412560B - Network collocating method, apparatus and system based on SDN - Google Patents

Network collocating method, apparatus and system based on SDN Download PDF

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Publication number
CN104412560B
CN104412560B CN201380035267.8A CN201380035267A CN104412560B CN 104412560 B CN104412560 B CN 104412560B CN 201380035267 A CN201380035267 A CN 201380035267A CN 104412560 B CN104412560 B CN 104412560B
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node
controller
master controller
master
destination node
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CN104412560A (en
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熊春山
余芳
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The present invention provides a kind of network collocating method based on SDN, apparatus and system, wherein the network collocating method based on SDN includes, when judging to exist the master controller for needing to change, obtains the node identification for the destination node for needing to change master controller；According to the load state information of other SDN controllers in controller pool, for the master controller of destination node distribution renewal；Node identification is sent to the master controller of renewal, the node type of destination node corresponding to node identification is obtained for the master controller of renewal, for destination node configuration control rule corresponding with node type, and control rule is sent to destination node, the destination node can be configured accordingly according to control rule, there is preferable performance when being automatically configured so as to not only realize SDN control plane to datum plane, and enabling to the master controller of renewal to be controlled node.

Description

Network collocating method, apparatus and system based on SDN
Technical field
The present invention relates to the communication technology, more particularly to a kind of network collocating method based on SDN, apparatus and system.
Background technology
Software defined network (Software defined network, SDN) is a kind of new network architecture, and SDN will The control function of the network equipment is separated from the network equipment, each network equipment matched somebody with somebody using central control node Put.By the way that control plane and data planar separation are come, the network equipment can be carried out flexibly to manage and control.
In SDN, by positioned at the equipment for being controlled to the network equipment of control plane, referred to as SDN controllers (Controller)；By positioned at the network equipment of datum plane, referred to as node.In the network for data forwarding, node can Think router or interchanger.In communication network, node can be authentication and authorization charging (Authentication Authorization Accounting, AAA) server, support DynamicHost that agreement (Dynamic Host are set Configuration Protocol, DHCP) equipment, network address translation (Network Address Translation, NAT) equipment, third generation partner program (The 3rd Generation Partnership Project, 3GPP) network element Evolved base station (evolved Node B, eNB), strategy and charging rule functions (Policy and Charging Rules Function, PCRF) etc..
Each SDN controllers can be used as master controller (Master Controller) or slave controller (Slave Controller), each node can communicate to connect with multiple SDN controllers.For individual node, it is communicated to connect Multiple SDN controllers in can only have master controller of the controller as the node, other one or more SDN controls Device can be as the slave controller of the node.Single SDN controllers can be as the master controller of one or more nodes. SDN controllers as the master controller of some node are also used as the slave controller of other nodes.Master controller is used for Node is controlled, and spare controller of the slave controller as master controller, for master controller occur overload or During failure, play a part of master controller temporarily.
In the prior art, when overload or failure occur for the master controller of node, according to advance configuration, can incite somebody to action The slave controller of node is used as the master controller of renewal, to ensure the continuous of communication.But the if master control of renewal Master controller of the device processed also as other nodes, and during its current heavier loads, then will influence the master controller pair of renewal The control of individual node, cause bottleneck of the performance of the master controller of renewal as SDN network performance in itself.
The content of the invention
The one side of the embodiment of the present invention is to provide a kind of network collocating method based on SDN, including：
When judging to exist the master controller for needing to change, the node for the destination node for needing to change master controller is obtained Mark；
According to the load state information of other SDN controllers in controller pool, for the master of destination node distribution renewal Controller, the controller pool include at least one SDN controllers, and the master controller of the renewal is in the controller pool SDN controllers；
The node identification is sent to the master controller of the renewal, for described in the master controller acquisition of the renewal The node type of destination node corresponding to node identification, for destination node configuration control rule corresponding with the node type Then, and by the control rule it is sent to the destination node.
The network collocating method based on SDN provided with reference to one side, in the first possible implementation, institute The load state information according to other SDN controllers in controller pool is stated, for the master controller of destination node distribution renewal Including：
According to the weights of other SDN controllers in the controller pool, for the master of the destination node distribution renewal Controller, the weights of each SDN controllers are the numerical value distributed according to load state information.
With reference to the first possible implementation of one side, in second of possible implementation, it is described When judging to exist the master controller for needing to change, obtaining the node identification for the destination node for needing to change master controller includes：
When judging to exist the failure master controller to break down, the node that is serviced from the failure master controller In, obtain slave controller weights be more than or equal to threshold value destination node node identification, the slave controller is After the failure master controller breaks down, the SDN controllers as the standby master controller of the destination node.
With reference to the first possible implementation of one side, in the third possible implementation, it is described When judging to exist the master controller for needing to change, obtaining the node identification for the destination node for needing to change master controller includes：
When judging to exist the overload master controller overloaded, overload master controller institute service node is obtained Node identification；
The quantity for the node that the overload master controller is serviced is reduced, until the weights of the overload master controller are less than Or equal to threshold value；
The node that the overload master controller is no longer serviced obtains the node of the destination node as destination node Mark.
With reference to one side or the first to three kind of possible implementation, in the 4th kind of possible implementation, institute Stating method also includes：
The controller identifier of the master controller of the renewal is sent to the destination node, for the destination node to SDN controllers corresponding to the controller identifier send the solicited message for carrying the node type, so that the renewal For master controller according to the solicited message, being that destination node configuration is corresponding with the node type controls rule, and will The control rule is sent to the destination node.
Second aspect of the embodiment of the present invention is to provide a kind of network collocating method based on SDN, including：
Receive the control rule that the master controller of renewal is sent；
Wherein, the master controller of the renewal is that master control set is judging the master controller for needing to change be present, and is obtained After the node identification for taking the destination node for needing to change master controller, according to the load of other SDN controllers in controller pool Status information, for the SDN controllers of destination node distribution；The control rule is that the master controller of the renewal obtains institute Node type corresponding to node identification is stated, for the rule for being used to control corresponding with the node type of destination node configuration Then；The controller pool includes at least one SDN controllers, and the master controller of the renewal is in the controller pool SDN controllers；
Configured according to the control rule.
The network collocating method based on SDN provided with reference to second aspect, in the first possible implementation, institute Stating method also includes：
The controller identifier that the master control set is sent is received, the controller identifier is the mark of the controller of the renewal Know information；
The solicited message for carrying the node type is sent to SDN controllers corresponding to the controller identifier, so that The master controller of the renewal is according to the solicited message, for destination node configuration control corresponding with the node type Rule.
3rd aspect of the embodiment of the present invention is to provide a kind of network collocating method based on SDN, including：
According to node type, for destination node configuration control rule corresponding with the node type；
The control rule is sent to the destination node, so that the destination node is carried out according to the control rule Configuration.
The network collocating method based on SDN provided with reference to the 3rd aspect, in the first possible implementation, institute State according to node type, include for destination node configuration control rule corresponding with the node type：
The node identification that master control set is sent is received, the node identification is that the master control set is judging needs be present During the master controller of replacing, the identification information for needing to change the destination node of master controller of acquisition；
According to the node identification, the node type of the destination node corresponding to the node identification is obtained；
For destination node configuration control rule corresponding with the node type.
The network collocating method based on SDN provided with reference to the 3rd aspect, in second of possible implementation, institute State according to node type, include for destination node configuration control rule corresponding with the node type：
Receive the solicited message for carrying the node type that the destination node is sent；
According to the solicited message, for destination node configuration control rule corresponding with the node type.
With reference to the 3rd aspect or the first to two kind of possible implementation, in the third possible implementation, institute Stating method also includes：
Load state information is sent to the master control set, for the master control set judge exist need to change Master controller, and get need change master controller destination node node identification after, according in controller pool with The load state information of other SDN controllers of the node connection, for the master controller of destination node distribution renewal；Institute Stating controller pool includes at least one SDN controllers, and the master controller of the renewal is the SDN controls in the controller pool Device.
With reference to the 3rd aspect or the first to two kind of possible implementation, in the 4th kind of possible implementation, institute Stating method also includes：
If breaking down, failure message is sent to the master control set；Or
If overloading, overload message is sent to the master control set.
4th aspect of the embodiment of the present invention is to provide a kind of master control set, including：
Acquiring unit, for when judging to exist the master controller for needing to change, obtaining to need to change master controller The node identification of destination node；
Processing unit, it is the destination node for the load state information according to other SDN controllers in controller pool The master controller of renewal is distributed, the controller pool includes at least one SDN controllers, and the master controller of the renewal is institute State the SDN controllers in controller pool；
Transmitting element, for the node identification to be sent to the master controller of the renewal, for the master of the renewal Controller obtains the node type of destination node corresponding to the node identification, for destination node configuration and the node class Control rule corresponding to type, and the control rule is sent to the destination node.
The master control set provided with reference to the 4th aspect, in the first possible implementation, the processing unit is also For：
According to the weights of other SDN controllers in the controller pool, for the master of the destination node distribution renewal Controller, the weights of each SDN controllers are the numerical value distributed according to load state information.
It is described to obtain in second of possible implementation with reference to the first possible implementation of the 4th aspect Unit is taken to be additionally operable to：
When judging to exist the failure master controller to break down, the node that is serviced from the failure master controller In, obtain slave controller weights be more than or equal to threshold value destination node node identification, the slave controller is After the failure master controller breaks down, the SDN controllers as the standby master controller of the destination node.
It is described to obtain in the third possible implementation with reference to the first possible implementation of the 4th aspect Unit is taken to be additionally operable to：
When judging to exist the overload master controller overloaded, overload master controller institute service node is obtained Node identification；The quantity for the node that the overload master controller is serviced is reduced, until the weights of the overload master controller are small In or equal to threshold value；The node that the overload master controller is no longer serviced obtains the target section as destination node The node identification of point.
With reference to the 4th aspect or the first to three kind of possible implementation, in the 4th kind of possible implementation, institute Transmitting element is stated to be additionally operable to：
The controller identifier of the master controller of the renewal is sent to the destination node, for the destination node to SDN controllers corresponding to the controller identifier send the solicited message for carrying the node type, so that the renewal For master controller according to the solicited message, being that destination node configuration is corresponding with the node type controls rule, and will The control rule is sent to the destination node.
5th aspect of the embodiment of the present invention is to provide a kind of node, including：
Receiving unit, the control rule that the master controller for receiving renewal is sent；
Wherein, the master controller of the renewal is that master control set is judging the master controller for needing to change be present, and is obtained After the node identification for taking the destination node for needing to change master controller, according to the load of other SDN controllers in controller pool Status information, for the SDN controllers of destination node distribution；The control rule is that the master controller of the renewal obtains institute Node type corresponding to node identification is stated, for the rule for being used to control corresponding with the node type of destination node configuration Then；The controller pool includes at least one SDN controllers, and the master controller of the renewal is in the controller pool SDN controllers；
Dispensing unit, for being configured according to the control rule.
The node provided with reference to the 5th aspect, in the first possible implementation, the receiving unit is additionally operable to：
The controller identifier that the master control set is sent is received, the controller identifier is the mark of the controller of the renewal Know information；
Correspondingly, the node also includes：
Transmitting element, the node type is carried for being sent to SDN controllers corresponding to the controller identifier Solicited message, so that the master controller of the renewal configures and the node according to the solicited message for the destination node Control rule corresponding to type.
6th aspect of the embodiment of the present invention is to provide a kind of master controller, including：
Processing unit, for according to node type, rule to be controlled for destination node configuration is corresponding with the node type；
Transmitting element, for the control rule to be sent into the destination node, so that the destination node is according to institute Control rule is stated to be configured.
The master controller provided with reference to the 6th aspect, in the first possible implementation, the processing unit is also For：
The node identification that master control set is sent is received, the node identification is that the master control set is judging needs be present During the master controller of replacing, the identification information for needing to change the destination node of master controller of acquisition；According to the node identification, Obtain the node type of the destination node corresponding to the node identification；For destination node configuration and the node type pair The control rule answered.
The master controller provided with reference to the 6th aspect, in second of possible implementation, the processing unit is also For：
Receive the solicited message for carrying the node type that the destination node is sent；According to the solicited message, For destination node configuration control rule corresponding with the node type.
With reference to the 6th aspect or the first to two kind of possible implementation, in the third possible implementation, institute Transmitting element is stated to be additionally operable to：
Load state information is sent to the master control set, for the master control set judge exist need to change Master controller, and get need change master controller destination node node identification after, according in controller pool with The load state information of other SDN controllers of the node connection, for the master controller of destination node distribution renewal；Institute Stating controller pool includes at least one SDN controllers, and the master controller of the renewal is the SDN controls in the controller pool Device.
With reference to the 6th aspect or the first to two kind of possible implementation, in the 4th kind of possible implementation, institute Transmitting element is stated to be additionally operable to：
When breaking down, failure message is sent to the master control set；Or
When overloading, overload message is sent to the master control set.
7th aspect of the embodiment of the present invention is to provide a kind of master control set, including：
Processor, memory, bus and communication interface；The processor, the memory, the communication interface pass through institute Bus is stated to connect and complete mutual communication；
The communication interface, for being communicated to connect with described node, communicated to connect with described master controller, and/or Communicated to connect with slave controller；
The memory, for depositing program；
The processor, for performing described program；
Wherein, described program is used for when judging to exist the master controller for needing to change, and acquisition needs to change main control The node identification of the destination node of device；
According to the load state information of other SDN controllers in controller pool, for the master of destination node distribution renewal Controller, the controller pool include at least one SDN controllers, and the master controller of the renewal is in the controller pool SDN controllers；
The node identification is sent to the master controller of the renewal, for described in the master controller acquisition of the renewal The node type of destination node corresponding to node identification, for destination node configuration control rule corresponding with the node type Then, and by the control rule it is sent to the destination node.
8th aspect of the embodiment of the present invention is to provide a kind of node, including：
Processor, memory, bus and communication interface；The processor, the memory, the communication interface pass through institute Bus is stated to connect and complete mutual communication；
The communication interface, communicate to connect with described master control set, and communicated to connect with described master controller, And/or communicated to connect with slave controller；
The communication interface is used to receive the control rule that the master controller of renewal is sent；
Wherein, the master controller of the renewal is that master control set is judging the master controller for needing to change be present, and is obtained After the node identification for taking the destination node for needing to change master controller, according to the load of other SDN controllers in controller pool Status information, for the SDN controllers of destination node distribution；The control rule is that the master controller of the renewal obtains institute Node type corresponding to node identification is stated, for the rule for being used to control corresponding with the node type of destination node configuration Then；The controller pool includes at least one SDN controllers, and the master controller of the renewal is in the controller pool SDN controllers；
The memory, for depositing program；
The processor, for performing described program；
Wherein, described program is used to be configured according to the control rule.
The 9th aspect of the embodiment of the present invention is to provide a kind of master controller, including：
Processor, memory, bus and communication interface；The processor, the memory, the communication interface pass through institute Bus is stated to connect and complete mutual communication；
The communication interface, for being communicated to connect with described master control set, communicated to connect with described node, and/or Communicated with slave controller；
The memory, for depositing program；
The processor, for performing described program；
Wherein, described program is used for according to node type, for destination node configuration control corresponding with the node type Rule；The control rule is sent to the destination node, so that the destination node is matched somebody with somebody according to the control rule Put.
Tenth aspect of the embodiment of the present invention is to provide a kind of communication system based on SDN, including described master control dress Put, at least one described node, and at least one described master controller；
Communicated to connect between the master control set, the node and the master controller.
Network collocating method provided in an embodiment of the present invention based on SDN, apparatus and system, needed more judging to exist During the master controller changed, the node identification for the destination node for needing to change master controller is obtained, according to other SDN in controller pool The load state information of controller, for the master controller of destination node distribution renewal, node identification is sent to the master control of renewal Device processed, the master controller of renewal obtain the node type of destination node corresponding to node identification, for destination node configuration and node Control rule corresponding to type, and control rule is sent to destination node, the destination node can enter according to the control rule The corresponding configuration of row.Due to when master controller occur overloading or the situation of failure and when needing to be replaced, master control set can be from In other SDN controllers of controller pool, the preferable SDN controllers of loading condition are reselected as renewal for destination node Master controller, datum plane is automatically configured so as to not only realize SDN control plane, and enable to the master of renewal There is preferable performance when controller is controlled to node.
Brief description of the drawings
Fig. 1 is the flow chart of the network collocating method provided in an embodiment of the present invention based on SDN；
Fig. 2 is the flow chart of another network collocating method based on SDN provided in an embodiment of the present invention；
Fig. 3 is the flow chart of the another network collocating method based on SDN provided in an embodiment of the present invention；
Fig. 4 a are the structural representation of master control set provided in an embodiment of the present invention；
Fig. 4 b are the structural representation of another master control set provided in an embodiment of the present invention；
Fig. 5 a are the structural representation of node provided in an embodiment of the present invention；
Fig. 5 b are the structural representation of another node provided in an embodiment of the present invention；
Fig. 5 c are the structural representation of another node provided in an embodiment of the present invention；
Fig. 6 a are the structural representation of master controller provided in an embodiment of the present invention；
Fig. 6 b are the structural representation of another master controller provided in an embodiment of the present invention；
Fig. 7 is the structural representation of the communication system provided in an embodiment of the present invention based on SDN.
Embodiment
For node replacement master controller when, in order that the master controller that must be updated can have preferable performance, this hair Bright each embodiment utilizes a master control set (primary controller) and at least one SDN controllers, in SDN control Plane forms controller pool (controller pool).Wherein, each SDN controllers in controller pool are relative to master control set For, Common Controller (common controller) can also be referred to as.By by master control set to each in controller pool SDN controllers are controlled, and can be caused co-ordination between each SDN controllers, be realized load balancing.
Communicated to connect between each SDN controllers and master control set in controller pool；In each SDN controllers and datum plane Each node communication connection；Master control set communicates to connect with each node in datum plane.
Various embodiments of the present invention provide the network collocating method based on SDN, for other forms control plane with The network or system of datum plane separation, can equally be configured using the described method in various embodiments of the present invention.
Master control set described in various embodiments of the present invention can be independent equipment, or be arranged on control plane Functional module in middle other equipment；Described node can be router, interchanger, aaa server, support DHCP to set Standby, NAT device, eNB or PCRF etc.；Master controller (master controller) and slave controller (slave Controller) it is SDN controllers in controller pool, specific SDN controllers are operated as master controller, also It is to be operated as slave controller, is configured by master control set according to default strategy.Slave controller is as master control The backup of device processed is used.
Fig. 1 is the flow chart of the network collocating method provided in an embodiment of the present invention based on SDN, as shown in figure 1, this method Including：
101st, master control set obtains the mesh for needing to change master controller when judging to exist the master controller for needing to change Mark the node identification of node.
Specifically, when the situation of the master controller failure for node serve or overload, can be sent out to master control set Failure or overload message are sent, there occurs failure or overload so which master controller master control set knows；Or master control set can Periodically to be detected to the SDN controllers used as master controller, to know which master controller, there occurs failure Or the situation of overload.
Master control set is after judging which SDN controller needs to be replaced, it is necessary to further judge that the SDN is controlled The node that device processed is serviced.That is, when the SDN controllers need to be replaced, using the SDN controllers as master controller Node is, it is necessary to which master control set is again the master controller of its distribution renewal.
The node of replacing master controller, referred to as destination node will be needed in various embodiments of the present invention.Master control set can lead to Following method is crossed, obtains the node identification of destination node.
If the corresponding relation between each SDN controllers and each node is stored with master control set, such as which SDN controller As the master controller or slave controller of which or which node, or each node is using which SDN controller as main control Device or slave controller, then master control set the node identification of destination node from above-mentioned corresponding relation, can be found.
If not storing above-mentioned corresponding relation in master control set, master control set can be controlled by the SDN that the needs are replaced Device processed, be destination node service slave controller or database, obtain SDN controllers that the needs are replaced occurring therefore Before barrier or overload, as which master controller with which node, so as to find the node identification of destination node.
102nd, master control set is the destination node according to the load state information of other SDN controllers in controller pool Distribute the master controller of renewal.
Wherein, the controller pool includes at least one SDN controllers, and the master controller of the renewal is the control SDN controllers in device pond.
Specifically, master control set after the destination node for needing to change master controller has been known, obtains target section respectively The load state information for other SDN controllers that point is connected.If destination node has one or more slave controllers, lead Control device can obtain the load state information of each slave controller.
Wherein, the load state information in various embodiments of the present invention includes CPU (Central Processing Unit, CPU) the information such as resource utilization, internal memory service condition and remaining memory capacity.
Master control set, can be according to the original of load balancing after the load state information of these SDN controllers is collected into Then, from other SDN controllers of controller pool, master controller is distributed again for destination node.
It should be noted that because master control set is that the step of destination node distributes master controller is to be directed to each mesh respectively Mark what node was carried out, various embodiments of the present invention only illustrate by taking a destination node as an example.
Due to needing to carry out more data processing and operation, therefore prioritizing selection as the SDN controllers of master controller The SDN controllers of light load, the master controller as destination node in each SDN controllers.Wherein, according to load state information Judge the method for the load weight situation of SDN controllers, can using with similar implementation in the prior art.
Master control set is after the load weight of each SDN controllers is determined, according to the actual needs, for destination node point With a master controller, the master controller as renewal.
103rd, the node identification is sent to the master controller of the renewal by master control set.
Specifically, master control set is node distribution master controller, the specific control carried out to the node is by master controller Carry out.After being changed for the master controller of destination node service, correspondingly need what renewal was controlled to the destination node Control rule.Control rule is obtained by the master controller updated according to the node type of node.
In order that the master controller that must be updated can know that it is allocated as the master controller of the node, master control set exists For node distribution, it is necessary to the node identification of node to be sent to the master controller of the renewal after the master controller of renewal, and Its allocated Role Information will be informed to the master controller of renewal.So as to which the master controller can know which it save as The master controller of point, and then can obtain and the node is entered before being controlled to node, according to the node type of the node The control rule of row control.
104th, the master controller of renewal obtains the node type of destination node corresponding to the node identification, is the target Node configuration control rule corresponding with the node type.
Specifically, renewal master controller receive master control set transmission node identification after, according to the node mark Know, obtain node type corresponding with the node identification.
Preferably, the master controller of renewal can obtain the context of node in the following way, on complete node The hereinafter control rule of the node type including node, the state of node and node.
Specifically include, the master controller of renewal can obtain directly at node；Can be at the former master controller of node Obtain；It can be obtained at the former slave controller of node；Can from topology information database (topology database) and Policy information database (policy database) obtains control rule sets corresponding to node type, is specified for the node corresponding Control rule.
If being stored with node identification and the corresponding relation of node type in master control set, the master controller updated can also The node type of the node is obtained at master control set.
Because node can be above-mentioned plurality of devices, and the control rule being controlled to distinct device may be different, Therefore kinds of schemes can be pre-set in master controller, is controlled for different equipment using corresponding control rule. The node type of node can be the device type of node, or other information.
The master controller of renewal is after the node type of destination node is got, for destination node configuration and its node class Control rule corresponding to type.Corresponding relation between node type and control rule, can be set in advance in each master controller In；It can also be set in advance in database, correspondingly, the master controller of renewal can be in the database according to node type Searched, so as to know control rule corresponding with node type.
105th, the control rule is sent to the destination node by the master controller of renewal.
Specifically, the master controller of renewal is after control rule corresponding with the node type is obtained, the control is regular It is sent to destination node.So as to which destination node can be configured according to the control rule, it is achieved thereby that control plane logarithm According to the network configuration of plane.
Network collocating method provided in an embodiment of the present invention based on SDN, judging the main control for needing to change be present During device, obtain the node identification for the destination node for needing to change master controller, according in controller pool other SDN controllers it is negative Status information is carried, the master controller of renewal is distributed for destination node, node identification is sent to the master controller of renewal, renewal Master controller obtains the node type of destination node corresponding to node identification, for destination node configuration control corresponding with node type System rule, and control rule is sent to destination node, the destination node can be configured accordingly according to control rule. Due to when master controller occur overloading or the situation of failure and when needing to be replaced, master control set can from controller pool other In SDN controllers, master controller of the preferable SDN controllers of loading condition as renewal is reselected for destination node, so as to The control plane for not only realizing SDN automatically configures to datum plane, and enables to the master controller of renewal to node There is preferable performance when being controlled.
Fig. 2 is the flow chart of another network collocating method based on SDN provided in an embodiment of the present invention, as shown in Fig. 2 should Method includes：
201st, master control set is when judging to exist the failure master controller to break down, from the failure master controller institute In the node of service, node identification of the weights more than or equal to the destination node of threshold value of slave controller is obtained.
Wherein, the slave controller is after the failure master controller breaks down, as the destination node The SDN controllers of standby master controller.
Specifically, on the basis of implementation described in step 101, in order to avoid there is situation about overloading in master control set, The service relation between the SDN controllers in the node and control plane in datum plane can not be preserved in master control set.
In this case, the information of its node serviced is preserved in each SDN controllers, that is to say, that every Its master controller or slave controller as which node is stored with individual SDN controllers, and these nodes are also with which SDN controllers are as slave controller or master controller.
For example, SDN controllers 1 are the master controller of node 1, SDN controllers 2 and the subordinate that SDN controllers 3 are node 1 Controller, then SDN controllers 1, SDN controllers 2 and SDN controllers 3 know the role serviced each other for node 1 respectively.
Master control set can send allocation result when being every time node distribution master controller and/or slave controller To involved SDN controllers.Node identification, the Internet protocol (Internet of node can be included in allocation result Protocol, IP) address and/or fully qualified domain name (Fully Qualified Domain Name, FQDN), and be related to Controller identifier, Internet protocol (Internet Protocol, IP) address and/or the complete acceptance area of each SDN controllers arrived Name (Fully Qualified Domain Name, FQDN), in addition to each SDN controllers be allocated as master controller or from Belong to the Role Information of controller.Each SDN controllers will preserve the letter in allocation result after above-mentioned allocation result is received Breath, until after receiving the allocation result after renewal, correspondingly, the allocation result stored is updated.
Preferably, failure message can be sent to control by master control set when detecting that some master controller breaks down In device pond processed, other SDN controllers in addition to the master controller to break down, carry what is broken down in failure message The identification information of master controller；Each SDN controllers in controller pool, can be in each leisure originally after the failure message is received Searched in the nodal information list for institute's service node that ground is stored, promising each node serve is stored in nodal information list Each SDN controllers information；If some SDN controller is found, it is identical with the master controller to break down During node serve, then can by the context of the node and for the node serve each SDN controllers role, be sent to master control Device.So as to so that master control set can know the information for the node that the master controller to break down is serviced.
If the better performances of master control set, in the case where that will not overload, data can also be preserved in master control set The above-mentioned service relation between SDN controllers in node and control plane in plane.
In this case, when master control set monitors that some master controller breaks down, directly according to the service Relation finds the information for each node that the master controller to break down is serviced, i.e., affected node；And can also The information of other SDN controllers for these node serves is found, so as to the load state information according to these SDN controllers Master controller is redistributed for affected node.
Master control set can judge the failure master controller to break down in the following way.
One kind is, when master controller breaks down, failure master controller sends failure message to master control set.Master control fills Put after failure message is received, can interpolate that out that there occurs failure for which SDN controller.
Another kind is that master control set periodically detects whether each master controller is in normal working condition.If master control Device has detected that there occurs during failure, can know which SDN controller failure master controller is with master controller.
During as being broken down for the SDN controllers of master controller, by causing, one or more nodes that it is serviced are equal Need to change master controller.According to the backup relation in current SDN between master controller and slave controller, when master controller is sent out During raw failure, its node serviced will be switched on the slave controller being each pre-configured with；If node is provided with advance more Individual slave controller, then it can be switched on one of slave controller.The one or more slave controllers being pre-configured with, I.e. be used for master controller can not normal work when, play temporarily backup effect SDN controllers.
In order to ensure the continuity of communication, can enter exercise as the master controller of node temporarily by the use of slave controller With.But because slave controller is also possible to the master controller as other nodes, that is to say, that be somebody's turn to do when the node turns into After the load of slave controller, the slave controller is likely to occur the situation of heavier loads, so as to influence the slave controller For the performance of each node serve.
Based on the above situation, master control set breaks down in failure master controller, and each node be switched to respectively from In the case of belonging to controller, the loading condition of each slave controller can be further judged.
A threshold value is previously provided with master control set, the weight situation of the load for weighing SDN controllers.SDN The load weight situation of controller, can be embodied by weights.
Master control set, can be according to matching somebody with somebody after the load state information of each SDN controllers in obtaining controller pool in advance The rule put, according to the load weight situation of each SDN controllers, corresponding weights are distributed respectively for each SDN controllers.Load is got over The weights of the SDN controllers of weight are higher, and the weights of the lighter SDN controllers of load are lower.
It is understood that can also the weights of the SDN controllers of heavier loads be set smaller, by light load The weights of SDN controllers set higher, and the Rule of judgment in corresponding various embodiments of the present invention is adjusted.
Wherein, the actual loading situation of SDN controllers can be included in load state information, such as CPU resource utilization, The information such as internal memory service condition and remaining memory capacity；The parameter for weighing load weight can also be included, so that master control set root It is that would know that the load weight situation of SDN controllers according to the parameter.The parametric form specifically included in load state information, can To be determined according to the communication protocol being pre-configured between master control set and SDN controllers.
If master control set judges the slave controller that weights are more than or equal to threshold value in each slave controller be present, The node for illustrating to be switched on the slave controller is the destination node for needing to be allocated master controller again.
It is less than the slave controller of the threshold value for weights in each slave controller, can not is to be switched to the subordinate control The node of device processed redistributes master controller.That is, the current loading condition of the slave controller can be serviced by it Each node preferable process performance is provided.
Master control set obtains the node of destination node after judging to need to redistribute the destination node of master controller Mark.
202nd, master control set distributes according to the weights of other SDN controllers in the controller pool for the destination node The master controller of the renewal.
Wherein, the weights of each SDN controllers are the numerical value distributed according to load state information.
Specifically, on the basis of step 102, master control set, can be with when redistributing master controller for destination node According to the SDN controllers of weights, the therefrom light load representated by selection weights corresponding to SDN controllers difference in controller pool Master controller as the renewal of destination node.
Master control set preferentially checks the loading condition of other configured slave controllers of destination node.
If the destination node is only configured with a slave controller, that is, the slave controller having been switched to, then master control set From controller pool in other SDN controllers, main control of the SDN controllers of light load as the renewal of destination node is selected Device.Preferably, selection loading condition not yet reaches heavy duty or overload, and it is expected that the slave controller is converted into the target section Also be not in that slave controller of heavy duty or overload after the master controller of point.
If the destination node is configured with multiple slave controllers, master control set can select more for destination node therefrom New master controller.The principle of selection for, if wherein the loading condition of some slave controller not yet reach heavy duty or overload, and And it is expected that the slave controller to be converted to the master controller of the destination node after, be also not in heavy duty or overload situation Under, the slave controller can be converted to the master controller of the destination node, and be again the destination node point by master control set With other SDN controllers as new slave controller.
Further, if in multiple slave controllers of destination node, meet above-mentioned condition slave controller have it is multiple When, the loading condition of these slave controllers can be compared, a subordinate of wherein light load can be selected to control Master controller of the device as the destination node., can be further if multiple loads lighter slave controller be present Consider the distance of physical location, select the SDN controller closer to the distance wherein with destination node as its master controller.
If multiple slave controllers of destination node are unsatisfactory for above-mentioned condition, master control set can be from controller pool In other SDN controllers, the master controller of the renewal as the destination node of light load is selected.
203rd, the node identification is sent to the master controller of the renewal by master control set, and by the master control of the renewal The controller identifier of device processed is sent to the destination node.
Specifically, it may refer to the implementation described in step 103.
Further, also need to complete a security process between master control set and destination node, to carry out between the two Authentication and establish the secure transmission tunnel of both sides.
After above-mentioned security process terminates, master control set, will after master controller has been redistributed for destination node The controller identifier of the master controller of renewal is sent to the destination node, so that the destination node can know that master control set is it Which SDN controller the master controller for the renewal redistributed is.
In order that between the master controller and destination node that must update can proper communication, master control set can also be by target The IP address of node, the IP address of the master controller of renewal, the Role Information of the master controller updated, and in renewal main control It is the master controller that identification information and its Role Information of the master controller of the node serve etc. are sent to renewal before device.
The IP address of the master controller of renewal and its corresponding Role Information can also be sent to the target by master control set Node.
204th, the master controller of renewal obtains the node type of destination node corresponding to the node identification, is the target Node configuration control rule corresponding with the node type.
Specifically, also need to complete a security process between destination node and the master controller of renewal, to carry out both Between authentication and establish the secure transmission tunnel of both sides.
After above-mentioned security process terminates, implementation described in step 104 may refer to.
And then the master controller of renewal can also send information to master control set, to inform this main control of master control set The migration success of device.Master control set can discharge the connection between destination node, need to carry out with the destination node in next time During interaction, re-starting safety certification and establishing communication connection relation.
The mode that the master controller of renewal obtains the node type of destination node can have the following two kinds.
One kind is that the master controller of renewal receives the node identification that master control set is sent, and according to the node identification, obtains The node type of destination node corresponding to the node identification；Configured for the destination node corresponding with the node type Control rule.
Specifically, master control set can obtain the node type of destination node from database.Deposited in advance in the database Contain the corresponding relation between the identification information of node and node type.It can be believed between different nodes by respective mark Breath makes a distinction, and correspondingly, master control set can inquire and the node according to the node identification of destination node from database Node type corresponding to mark, the node type as the destination node.
The master controller of renewal can be according to the information obtained from topology information database and policy information database Node configuration control rule.
Wherein, topological database includes the related topology information database of the controller topology information data related to node Storehouse.
The topology location letter related to each SDN controllers in the related topology information database maintenance controller pool of controller Breath, including the topology location information of SDN controllers and predefined type information etc..The topology location information of SDN controllers Including：Internet Protocol Version 4 (Internet Protocol version 4, IPv4) address of SDN controllers, Internet protocol (Internet Protocol version 6, the IPv6) address of version 6 or FQDN.The predefined type letter of SDN controllers Breath is the information for distinguishing SDN controllers and master control set.That is, SDN controllers and master control set is predefined Type information differs.
The topology location information of the related topology information database maintenance node of node, include the topology location information of node And node type.The topology location information of node includes：IPv4 addresses, IPv6 addresses or the FQDN of node.In a node During with multiple ports, each port may correspond to different IP address or FQDN.The node type of node can include： Authentication, authorization, accounting (Authentication, Authorization and Accounting, AAA), DHCP proxy (Proxy), Dynamic Host Configuration Protocol server (Server), network address translation (Network Address Translation, NAT), fire prevention Wall (Firewall), transmission control protocol (Transmission Control Protocol, TCP) agency (Proxy), super literary This host-host protocol (HyperText Transfer Protocol, HTTP) agency (Proxy), domain name system (Domain Name System, DNS) server (Server), radio network controller (Radio Network Controller, RNC), base station control Device (Base Station Controller, BSC) processed, GPRS serving GPRS support node (Serving General Packet Radio Service Support Node, SGSN)), mobility management entity (Mobility Management Entity, MME), gateway (Serving Gateway, SGW), packet data network gateway (Packet Data Network Gateway, PGW), "Policy and Charging Rules Function (Policy charging and rules Function, PCRF), home subscriber server (Home Subscriber Server, HSS), mobile switching centre (Mobile Switching Center, MSC), Visited Location Registor (Visited Location Register, VLR) etc..
The related topology information database of above-mentioned controller, node related topology information database and policy information Any two or multiple can close as needed in database are set.The access rights of database can be configured so that Only master control set has permission conducts interviews to topology information database.When node or SDN topology location information change When, topology information database is correspondingly updated.
Policy information database includes the corresponding relation between node type and control rule.Each node type correspond to One basic function type set, identical function is there may be in basic function type set corresponding to different node types. Corresponding to every kind of function, a control information is correspond to respectively, correspondingly, each node type correspond to a plurality of control information, By a plurality of control information composition control rule, therefore each node correspond to corresponding control rule.
Each SDN controllers in controller pool can be provided with the address information of master control set, such as master control set in advance IPv4 addresses, IPv6 addresses or FQDN etc..Mark each type has been pre-configured with SDN controllers and master control set respectively Information.
Another kind is that SDN controllers corresponding to destination node to the controller identifier send and carry the node class The solicited message of type；The master controller of renewal is according to the solicited message, for destination node configuration and the node type Corresponding control rule.
Specifically, destination node sends the solicited message for obtaining control rule to the master controller of renewal, in the request may be used With including the IP address of destination node and its node type.
The master controller of renewal can get the destination node according to the IP address of destination node from following entity Contextual information.For example, the SDN controllers before renewal master controller as the destination node master controller, update main control SDN controllers before device as the destination node slave controller.If master control set is out of order in judgement after master controller, The control rule of node is got from failure master controller, then the master controller updated can also obtain from master control set The contextual information of destination node.
If the master controller of renewal is the slave controller of destination node, the upper and lower of the destination node has been preserved thereon Literary information, therefore the step of above-mentioned acquisition contextual information need not be performed.
The master controller of renewal can also obtain the contextual information of node directly at node.The master controller root of renewal According to node type query strategy information database, control rule sets corresponding to acquisition node type, the control for formulating the node is advised Then.So as to which the control rule can be handed down to the destination node by the master controller of renewal.
205th, the control rule is sent to the destination node by the master controller of renewal.
Specifically, it may refer to the implementation described in step 105.
206th, destination node receives the control rule that the master controller of renewal is sent, and is matched somebody with somebody according to the control rule Put.
Specifically, destination node receives control rule from the master controller of renewal.Destination node is according to the control received Rule, to its, current configuration is updated.Due to having changed the destination node of master controller, correspondingly control rule is also entered Renewal is gone, so as to which the control rule on destination node can be correspondingly updated automatically after main control replacing.
Included control information in control rule, can be and similar implementation in the prior art.
207th, load state information is sent to the master control set by the master controller of renewal.
Specifically, the master controller of renewal is will be after control rule is sent to destination node, can also be current by it Load state information is sent to master control set, and the load state information of the master controller of renewal is carried out more so as to obtain master control set Newly.
Fig. 3 is the flow chart of the another network collocating method based on SDN provided in an embodiment of the present invention, as shown in figure 3, should Method includes：
301st, master control set obtains the overload master controller when judging to exist the overload master controller overloaded The node identification of institute's service node.
Specifically, on the basis of implementation described in step 101, master control set can be judged in the following way The overload master controller overloaded.
One kind is, when master controller overloads, overload master controller sends overload message to master control set.Master control fills Put when receiving overload message, can interpolate that out which SDN controller is overloaded.
Another kind is that master control set periodically detects whether each master controller is in normal working condition.If master control Device has detected master controller, and there occurs during overload, can know which SDN controller overload master controller is.
During as being overloaded for the SDN controllers of master controller, by causing, one or more nodes that it is serviced are equal Need to change master controller.Master control set is in such cases it need obtain one of the overload master controller institute server Or the node identification of multiple nodes.
Master control set can obtain the node being related to after judging to overload master controller from the overload master controller Contextual information.The contextual information of its interior joint includes the node identification of the node, controlled for each SDN of the node serve The controller identifier of device and corresponding Role Information.In addition, the control rule of the node can also be included in contextual information.
When the loading condition of SDN controllers is characterized by weights, one can be previously provided with master control set Threshold value, the threshold value be able to can also be differed with the threshold value in embodiment illustrated in fig. 2 with identical.If the power of SDN controllers When value is more than the threshold value, then illustrate the current heavier loads of the SDN controllers；If the weights of SDN controllers are less than or equal to The threshold value, then illustrate the current light load of the SDN controllers.
Wherein, the relation between the loading condition of SDN controllers and weight, it may refer to institute in the embodiment shown in Fig. 2 The implementation stated.
302nd, master control set reduces the quantity for the node that the overload master controller is serviced, until the overload main control The weights of device are less than or equal to threshold value.
Specifically, master control set can reduce node from one or more nodes that overload master controller is serviced Quantity, it can preferably reduce one by one.
After often reducing by a node, master control set detects the current loading condition of the overload master controller again, or The current weights of the overload master controller.If the current weights of the overload master controller need to continue still greater than the threshold value Reduce the quantity for the node that the overload master controller is serviced.Until the weights of the overload master controller are less than or equal to the thresholding During value, the quantity for the node that the overload master controller is serviced can be no longer reduced.
303rd, the node that master control set no longer services the overload master controller is as destination node, and obtains the mesh Mark the node identification of node.
Specifically, master control set leads the overload after the quantity for the node that overload master controller is serviced is reduced The node that controller no longer services is as destination node, that is, needs master controller and distribute the section of master controller again for it Point.
Master control set correspondingly obtains the node identification of destination node after destination node has been known.
304th, master control set distributes according to the weights of other SDN controllers in the controller pool for the destination node The master controller of the renewal.
Specifically, it may refer to the implementation described in step 202.
Further, because the difference for overloading master controller and failure master controller is that failure master controller can not be again Normal work, and the feelings that master controller meets certain condition in its weights can be overloaded with normal work, therefore by overloading master controller Under condition, the slave controller of destination node can also be converted to as needed.
305th, the node identification is sent to the master controller of the renewal by master control set, and by the master control of the renewal The controller identifier of device processed is sent to the destination node.
Specifically, it may refer to the implementation described in step 203.
306th, the master controller of renewal obtains the node type of destination node corresponding to the node identification, is the target Node configuration control rule corresponding with the node type.
Specifically, also need to complete a security process between destination node and the master controller of renewal, to carry out both Between authentication and establish the secure transmission tunnel of both sides.
After above-mentioned security process terminates, the implementation described in step 204 may refer to.
And then the master controller of renewal can also send information to master control set, to inform this main control of master control set The migration success of device.Master control set can discharge the connection between destination node, need to carry out with the destination node in next time During interaction, re-starting safety certification and establishing communication connection relation.Also, master control set instruction overload master controller release The former related resource taken by destination node.Master controller is overloaded after the release of respective resources is completed, to master control set Carry out state renewal.
The mode that the master controller of renewal obtains the node type of destination node can have the following two kinds.Specifically it may refer to Implementation described in step 204.
One kind is that the master controller of renewal receives the node identification that master control set is sent, and according to the node identification, obtains The node type of destination node corresponding to the node identification；Configured for the destination node corresponding with the node type Control rule.
Another kind is that SDN controllers corresponding to destination node to the controller identifier send and carry the node class The solicited message of type；The master controller of renewal is according to the solicited message, for destination node configuration and the node type Corresponding control rule.
Specifically, destination node sends the solicited message for obtaining control rule to the master controller of renewal, in the request may be used With including the IP address of destination node and its node type.
The master controller of renewal can get the destination node according to the IP address of destination node from following entity Contextual information.For example, the SDN controllers before renewal master controller as the destination node master controller, update main control SDN controllers before device as the destination node slave controller.If master control set is out of order in judgement after master controller, The control rule of node is got from failure master controller, then the master controller updated can also obtain from master control set The contextual information of destination node.The master controller of renewal can also obtain the contextual information of node directly at node.
If the master controller of renewal is the slave controller of destination node, the upper and lower of the destination node has been preserved thereon Literary information, therefore the step of above-mentioned acquisition contextual information need not be performed.
307th, the control rule is sent to the destination node by the master controller of renewal.
Specifically, it may refer to the implementation described in step 205.
308th, destination node receives the control rule that the master controller of renewal is sent, and is matched somebody with somebody according to the control rule Put.
Specifically, it may refer to the implementation described in step 206.
309th, load state information is sent to the master control set by the master controller of renewal.
Specifically, it may refer to the implementation described in step 207.
Fig. 4 a are the structural representation of master control set provided in an embodiment of the present invention, as shown in fig. 4 a, the master control set bag Include：Acquiring unit 11, processing unit 12 and transmitting element 13.
Acquiring unit 11, for when judging to exist the master controller for needing to change, acquisition to need to change master controller Destination node node identification；
Processing unit 12, it is the target section for the load state information according to other SDN controllers in controller pool The master controller of point distribution renewal, the controller pool include at least one SDN controllers, and the master controller of the renewal is SDN controllers in the controller pool；
Transmitting element 13, for the node identification to be sent to the master controller of the renewal, for the renewal Master controller obtains the node type of destination node corresponding to the node identification, for destination node configuration and the node Control rule corresponding to type, and the control rule is sent to the destination node.
Specifically, the method that master control set provided in an embodiment of the present invention carries out the network configuration based on SDN, may refer to Implementation corresponding to above-mentioned described in embodiment of the method, here is omitted.
Master control set provided in an embodiment of the present invention, when judging to exist the master controller for needing to change, obtaining needs The node identification of the destination node of master controller is changed, according to the load state information of other SDN controllers in controller pool, is The master controller of destination node distribution renewal, node identification is sent to the master controller of renewal, and the master controller of renewal obtains The node type of destination node corresponding to node identification, it is regular for destination node configuration control corresponding with node type, and will Control rule is sent to destination node, and the destination node can be configured accordingly according to control rule.Due to working as master control Device processed occur overloading or the situation of failure and when needing to be replaced, master control set can be from other SDN controllers of controller pool In, master controller of the preferable SDN controllers of loading condition as renewal is reselected for destination node, so as to not only realize SDN control plane automatically configures to datum plane, and can in tuning controller pond each controller resource so that more New master controller has preferable performance when being controlled to node.
Further, the processing unit 12 is additionally operable to：
According to the weights of other SDN controllers in the controller pool, for the master of the destination node distribution renewal Controller, the weights of each SDN controllers are the numerical value distributed according to load state information.
Further, the acquiring unit 11 is additionally operable to：
When judging to exist the failure master controller to break down, the node that is serviced from the failure master controller In, obtain slave controller weights be more than or equal to threshold value destination node node identification, the slave controller is After the failure master controller breaks down, the SDN controllers as the standby master controller of the destination node.
Further, the acquiring unit 11 is additionally operable to：
When judging to exist the overload master controller overloaded, overload master controller institute service node is obtained Node identification；The quantity for the node that the overload master controller is serviced is reduced, until the weights of the overload master controller are small In or equal to threshold value；The node that the overload master controller is no longer serviced obtains the target section as destination node The node identification of point.
Further, the transmitting element 13 is additionally operable to：
The controller identifier of the master controller of the renewal is sent to the destination node, for the destination node to SDN controllers corresponding to the controller identifier send the solicited message for carrying the node type, so that the renewal For master controller according to the solicited message, being that destination node configuration is corresponding with the node type controls rule, and will The control rule is sent to the destination node.
Specifically, the method that master control set provided in an embodiment of the present invention carries out the network configuration based on SDN, may refer to Implementation corresponding to above-mentioned described in embodiment of the method, here is omitted.
Fig. 4 b are the structural representation of another master control set provided in an embodiment of the present invention, as shown in Figure 4 b, processor 21, Memory 22, bus 23 and communication interface 24.Connected simultaneously by bus 23 between processor 21, memory 22 and communication interface 24 Complete mutual communication.
Processor 21 may be monokaryon or multinuclear CPU (Central Processing Unit, CPU), or Person is specific integrated circuit (Application Specific Integrated Circuit, ASIC), or to be configured to Implement one or more integrated circuits of the embodiment of the present invention.
Memory 22 can be high-speed RAM memory, or nonvolatile memory (non-volatile Memory), a for example, at least magnetic disk storage.
The communication interface 24 is used to communicate to connect with node, master controller and/or slave controller.
Memory 22 is used to deposit program 221.Specifically, program code, described program code can be included in program 221 Including computer-managed instruction.
The operation program 221 of processor 21, to perform：
When judging to exist the master controller for needing to change, the node for the destination node for needing to change master controller is obtained Mark；
According to the load state information of other SDN controllers in controller pool, for the master of destination node distribution renewal Controller, the controller pool include at least one SDN controllers, and the master controller of the renewal is in the controller pool SDN controllers；
The node identification is sent to the master controller of the renewal, for described in the master controller acquisition of the renewal The node type of destination node corresponding to node identification, for destination node configuration control rule corresponding with the node type Then, and by the control rule it is sent to the destination node.
Specifically, the method that master control set provided in an embodiment of the present invention carries out the network configuration based on SDN, may refer to Implementation corresponding to above-mentioned described in embodiment of the method, here is omitted.
Fig. 5 a are the structural representation of node provided in an embodiment of the present invention, and as shown in Figure 5 a, the node includes：Receive single Member 31 and dispensing unit 32.
Receiving unit 31, the control rule that the master controller for receiving renewal is sent；
Wherein, the master controller of the renewal is that master control set is judging the master controller for needing to change be present, and is obtained After the node identification for taking the destination node for needing to change master controller, according to the load of other SDN controllers in controller pool Status information, for the SDN controllers of destination node distribution；The control rule is that the master controller of the renewal obtains institute Node type corresponding to node identification is stated, for the rule for being used to control corresponding with the node type of destination node configuration Then；The controller pool includes at least one SDN controllers, and the master controller of the renewal is in the controller pool SDN controllers；
Dispensing unit 32, for being configured according to the control rule.
Specifically, the method that node provided in an embodiment of the present invention carries out the network configuration based on SDN, may refer to above-mentioned Implementation described in corresponding embodiment of the method, here is omitted.
Node provided in an embodiment of the present invention, when master control set judges to exist the master controller for needing to change, according to The load state information of other SDN controllers in controller pool, for the master controller of its distribution renewal, the master controller of renewal is It configures control rule corresponding with node type, so as to which node can be configured accordingly according to control rule.Due to When master controller occur overloading or the situation of failure and when needing to be replaced, master control set can be from other SDN of controller pool In controller, master controller of the preferable SDN controllers of loading condition as renewal is reselected for node, so as to not only realize SDN control plane automatically configures to datum plane, and enables to the master controller of renewal to be controlled node When there is preferable performance.
Fig. 5 b are the structural representation of another node provided in an embodiment of the present invention, and as shown in Figure 5 b, the node can be with Including：Transmitting element 33.
The receiving unit 31 is additionally operable to：
The controller identifier that the master control set is sent is received, the controller identifier is the mark of the controller of the renewal Know information；
Correspondingly, the transmitting element 33, carried for being sent to SDN controllers corresponding to the controller identifier The solicited message of node type is stated, so that the master controller of the renewal is matched somebody with somebody according to the solicited message for the destination node Put control rule corresponding with the node type.
Specifically, the method that node provided in an embodiment of the present invention carries out the network configuration based on SDN, may refer to above-mentioned Implementation described in corresponding embodiment of the method, here is omitted.
Fig. 5 c are the structural representation of another node provided in an embodiment of the present invention, and as shown in Figure 5 c, the node includes：
Processor 41, memory 42, bus 43 and communication interface 44.Processor 41, memory 42 and communication interface 44 it Between connected by bus 43 and complete mutual communication.
Processor 41 may be monokaryon or multinuclear CPU (Central Processing Unit, CPU), or Person is specific integrated circuit (Application Specific Integrated Circuit, ASIC), or to be configured to Implement one or more integrated circuits of the embodiment of the present invention.
Memory 42 can be high-speed RAM memory, or nonvolatile memory (non-volatile Memory), a for example, at least magnetic disk storage.
The communication interface 44 communicates to connect with master control set, master controller and/or slave controller, is updated for receiving Master controller send control rule；
Wherein, the master controller of the renewal is that master control set is judging the master controller for needing to change be present, and is obtained After the node identification for taking the destination node for needing to change master controller, according to the load of other SDN controllers in controller pool Status information, for the SDN controllers of destination node distribution；The control rule is that the master controller of the renewal obtains institute Node type corresponding to node identification is stated, for the rule for being used to control corresponding with the node type of destination node configuration Then；The controller pool includes at least one SDN controllers, and the master controller of the renewal is in the controller pool SDN controllers；
Memory 42 is used to deposit program 421.Specifically, program code, described program code can be included in program 421 Including computer-managed instruction.
The operation program 421 of processor 41, to perform：
Configured according to the control rule.
Specifically, the method that node provided in an embodiment of the present invention carries out the network configuration based on SDN, may refer to above-mentioned Implementation described in corresponding embodiment of the method, here is omitted.
Fig. 6 a are the structural representation of master controller provided in an embodiment of the present invention, as shown in Figure 6 a, the master controller bag Include：Processing unit 51 and transmitting element 52.
Processing unit 51, for according to node type, being advised for destination node configuration control corresponding with the node type Then；
Transmitting element 52, for by it is described control rule be sent to the destination node so that the destination node according to The control rule is configured.
Specifically, the method that master controller provided in an embodiment of the present invention carries out the network configuration based on SDN, may refer to Implementation corresponding to above-mentioned described in embodiment of the method, here is omitted.
Master controller provided in an embodiment of the present invention, when master control set judges to exist the master controller for needing to change, According to the load state information of other SDN controllers in controller pool, for the master controller of destination node distribution renewal, as After the master controller of renewal, the node type of destination node corresponding to node identification is obtained, for destination node configuration and node Control rule corresponding to type, and control rule is sent to destination node so that the destination node can advise according to the control Then configured accordingly.Due to when master controller occur overloading or the situation of failure and when needing to be replaced, master control set can So that from other SDN controllers of controller pool, the preferable SDN controllers of loading condition are reselected as more for destination node New master controller, datum plane is automatically configured so as to not only realize SDN control plane, and enable to update Master controller there is preferable performance when being controlled to node.
Further, the processing unit 51 is additionally operable to：
The node identification that master control set is sent is received, the node identification is that the master control set is judging needs be present During the master controller of replacing, the identification information for needing to change the destination node of master controller of acquisition；According to the node identification, Obtain the node type of the destination node corresponding to the node identification；For destination node configuration and the node type pair The control rule answered.
Further, the processing unit 51 is additionally operable to：
Receive the solicited message for carrying the node type that the destination node is sent；According to the solicited message, For destination node configuration control rule corresponding with the node type.
Further, the transmitting element 52 is additionally operable to：
Load state information is sent to the master control set, for the master control set judge exist need to change Master controller, and get need change master controller destination node node identification after, according in controller pool with The load state information of other SDN controllers of the node connection, for the master controller of destination node distribution renewal；Institute Stating controller pool includes at least one SDN controllers, and the master controller of the renewal is the SDN controls in the controller pool Device.
Further, the transmitting element 52 is additionally operable to：
When breaking down, failure message is sent to the master control set；Or
When overloading, overload message is sent to the master control set.
Specifically, the method that master controller provided in an embodiment of the present invention carries out the network configuration based on SDN, may refer to Implementation corresponding to above-mentioned described in embodiment of the method, here is omitted.
Fig. 6 b are the structural representation of another master controller provided in an embodiment of the present invention, as shown in Figure 6 b, the main control Device includes：
Processor 61, memory 62, bus 63 and communication interface 64.Processor 61, memory 62 and communication interface 64 it Between connected by bus 63 and complete mutual communication.
Processor 61 may be monokaryon or multinuclear CPU (Central Processing Unit, CPU), or Person is specific integrated circuit (Application Specific Integrated Circuit, ASIC), or to be configured to Implement one or more integrated circuits of the embodiment of the present invention.
Memory 62 can be high-speed RAM memory, or nonvolatile memory (non-volatile Memory), a for example, at least magnetic disk storage.
The communication interface 64 is used to communicate to connect with master control set, node and/or slave controller.
Memory 62 is used to deposit program 621.Specifically, program code, described program code can be included in program 621 Including computer-managed instruction.
The operation program 621 of processor 61, to perform：
According to node type, for destination node configuration control rule corresponding with the node type；The control is advised The destination node is then sent to, so that the destination node is configured according to the control rule.
Specifically, the method that master controller provided in an embodiment of the present invention carries out the network configuration based on SDN, may refer to Implementation corresponding to above-mentioned described in embodiment of the method, here is omitted.
Fig. 7 is the structural representation of the communication system provided in an embodiment of the present invention based on SDN, as shown in fig. 7, the communication System includes：
Master control set 1, at least one node 2, and at least one master controller 3；The master control set 1, the node 2 Communicated to connect between the master controller 3.
Further, at least one slave controller can also be included in the communication system.
Specifically, the communication system provided in an embodiment of the present invention based on SDN carries out the side of the network configuration based on SDN Method, the implementation described in above-mentioned corresponding embodiment of the method is may refer to, here is omitted.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through Programmed instruction related hardware is completed, and foregoing program can be stored in a computer read/write memory medium, the program Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or light Disk etc. is various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology The scope of scheme.

Claims (22)

  1. A kind of 1. network collocating method based on software defined network SDN, it is characterised in that including：
    When judging to exist the master controller for needing to change, the node mark for the destination node for needing to change master controller is obtained Know；
    According to the load state information of other SDN controllers in controller pool, for the main control of destination node distribution renewal Device, the controller pool include at least one SDN controllers, and the master controller of the renewal is in the controller pool SDN controllers；
    The node identification is sent to the master controller of the renewal, the node is obtained for the master controller of the renewal The node type of destination node corresponding to mark, it is regular for destination node configuration control corresponding with the node type, And the control rule is sent to the destination node.
  2. 2. the network collocating method according to claim 1 based on SDN, it is characterised in that described according in controller pool The load state information of other SDN controllers, the master controller for destination node distribution renewal include：
    According to the weights of other SDN controllers in the controller pool, for the main control of the destination node distribution renewal Device, the weights of each SDN controllers are the numerical value distributed according to load state information.
  3. 3. the network collocating method according to claim 2 based on SDN, it is characterised in that described to judge need be present During the master controller to be changed, obtaining the node identification for the destination node for needing to change master controller includes：
    When judging to exist the failure master controller to break down, in the node serviced from the failure master controller, obtain Taking the weights of slave controller, the slave controller is described more than or equal to the node identification of the destination node of threshold value After failure master controller breaks down, the SDN controllers as the standby master controller of the destination node.
  4. 4. the network collocating method according to claim 2 based on SDN, it is characterised in that described to judge need be present During the master controller to be changed, obtaining the node identification for the destination node for needing to change master controller includes：
    When judging to exist the overload master controller overloaded, the node of overload master controller institute service node is obtained Mark；
    The quantity for the node that the overload master controller is serviced is reduced, until the weights of the overload master controller are less than or waited In threshold value；
    The node that the overload master controller is no longer serviced obtains the node mark of the destination node as destination node Know.
  5. 5. according to any described network collocating method based on SDN in claim 1-4, it is characterised in that methods described is also Including：
    The controller identifier of the master controller of the renewal is sent to the destination node, so that the destination node is to described SDN controllers corresponding to controller identifier send the solicited message for carrying the node type, so that the master control of the renewal Device processed is regular for destination node configuration control corresponding with the node type according to the solicited message, and by described in Control rule is sent to the destination node.
  6. A kind of 6. network collocating method based on SDN, it is characterised in that including：
    Receive the control rule that the master controller of renewal is sent；
    Wherein, the master controller of the renewal is that master control set is judging the master controller for needing to change be present, and obtains need After the node identification for changing the destination node of master controller, according to the load condition of other SDN controllers in controller pool Information, for the SDN controllers of destination node distribution；The control rule is that the master controller of the renewal obtains the section Node type corresponding to point identification, for the rule for being used to control corresponding with the node type of destination node configuration； The controller pool includes at least one SDN controllers, and the master controller of the renewal is the SDN controls in the controller pool Device processed；
    Configured according to the control rule.
  7. 7. the network collocating method according to claim 6 based on SDN, it is characterised in that methods described also includes：
    The controller identifier that the master control set is sent is received, the controller identifier is believed for the mark of the controller of the renewal Breath；
    The solicited message for carrying the node type is sent to SDN controllers corresponding to the controller identifier, so that described The master controller of renewal is according to the solicited message, for destination node configuration control rule corresponding with the node type Then.
  8. A kind of 8. network collocating method based on SDN, it is characterised in that including：
    Load state information is sent to master control set, so that the master control set is judging the main control for needing to change be present Device, and get need change master controller destination node node identification after, according in controller pool with the node The load state information of other SDN controllers of connection, for the master controller of destination node distribution renewal；The controller Pond includes at least one SDN controllers, and the master controller of the renewal is the SDN controllers in the controller pool；
    Receive the node identification that master control set is sent, the node identification, which is the master control set, to be needed to change judging to exist Master controller when, acquisition need change master controller destination node identification information；
    According to the node identification, the node type of the destination node corresponding to the node identification is obtained；
    For destination node configuration control rule corresponding with the node type；
    The control rule is sent to the destination node, so that the destination node is matched somebody with somebody according to the control rule Put.
  9. 9. the network collocating method according to claim 8 based on SDN, it is characterised in that methods described also includes：
    If breaking down, failure message is sent to the master control set；Or
    If overloading, overload message is sent to the master control set.
  10. A kind of 10. master control set, it is characterised in that including：
    Acquiring unit, for when judging to exist the master controller for needing to change, obtaining the target for needing to change master controller The node identification of node；
    Processing unit, for the load state information according to other SDN controllers in controller pool, distributed for the destination node The master controller of renewal, the controller pool include at least one SDN controllers, and the master controller of the renewal is the control SDN controllers in device pond processed；
    Transmitting element, for the node identification to be sent to the master controller of the renewal, for the main control of the renewal Device obtains the node type of destination node corresponding to the node identification, for destination node configuration and the node type pair The control rule answered, and the control rule is sent to the destination node.
  11. 11. master control set according to claim 10, it is characterised in that the processing unit is additionally operable to：
    According to the weights of other SDN controllers in the controller pool, for the main control of the destination node distribution renewal Device, the weights of each SDN controllers are the numerical value distributed according to load state information.
  12. 12. master control set according to claim 11, it is characterised in that the acquiring unit is additionally operable to：
    When judging to exist the failure master controller to break down, in the node serviced from the failure master controller, obtain Taking the weights of slave controller, the slave controller is described more than or equal to the node identification of the destination node of threshold value After failure master controller breaks down, the SDN controllers as the standby master controller of the destination node.
  13. 13. master control set according to claim 11, it is characterised in that the acquiring unit is additionally operable to：
    When judging to exist the overload master controller overloaded, the node of overload master controller institute service node is obtained Mark；Reduce the quantity of node that the overload master controller is serviced, until the weights of the overload master controller be less than or Equal to threshold value；The node that the overload master controller is no longer serviced obtains the destination node as destination node Node identification.
  14. 14. according to any described master control set in claim 10-13, it is characterised in that the transmitting element is additionally operable to：
    The controller identifier of the master controller of the renewal is sent to the destination node, so that the destination node is to described SDN controllers corresponding to controller identifier send the solicited message for carrying the node type, so that the master control of the renewal Device processed is regular for destination node configuration control corresponding with the node type according to the solicited message, and by described in Control rule is sent to the destination node.
  15. A kind of 15. node, it is characterised in that including：
    Receiving unit, the control rule that the master controller for receiving renewal is sent；
    Wherein, the master controller of the renewal is that master control set is judging the master controller for needing to change be present, and obtains need After the node identification for changing the destination node of master controller, according to the load condition of other SDN controllers in controller pool Information, for the SDN controllers of destination node distribution；The control rule is that the master controller of the renewal obtains the section Node type corresponding to point identification, for the rule for being used to control corresponding with the node type of destination node configuration； The controller pool includes at least one SDN controllers, and the master controller of the renewal is the SDN controls in the controller pool Device processed；
    Dispensing unit, for being configured according to the control rule.
  16. 16. node according to claim 15, it is characterised in that the receiving unit is additionally operable to：
    The controller identifier that the master control set is sent is received, the controller identifier is believed for the mark of the controller of the renewal Breath；
    Correspondingly, the node also includes：
    Transmitting element, the request of the node type is carried for being sent to SDN controllers corresponding to the controller identifier Information, so that the master controller of the renewal configures and the node type according to the solicited message for the destination node Corresponding control rule.
  17. A kind of 17. master controller, it is characterised in that including：
    Transmitting element, for load state information to be sent into master control set, so that the master control set is judging need be present The master controller to be changed, and get need change master controller destination node node identification after, according to controller The load state information for other SDN controllers that node described in Chi Zhongyu connects, for the master control of destination node distribution renewal Device processed；The controller pool includes at least one SDN controllers, and the master controller of the renewal is in the controller pool SDN controllers；
    Processing unit, for receiving the node identification of master control set transmission, the node identification is that the master control set is judging When going out in the presence of the master controller for needing to change, the identification information for needing to change the destination node of master controller of acquisition；According to institute Node identification is stated, obtains the node type of the destination node corresponding to the node identification；For destination node configuration and institute State control rule corresponding to node type；
    Transmitting element, it is additionally operable to the control rule being sent to the destination node, so that the destination node is according to Control rule is configured.
  18. 18. master controller according to claim 17, it is characterised in that the transmitting element is additionally operable to：
    When breaking down, failure message is sent to the master control set；Or
    When overloading, overload message is sent to the master control set.
  19. A kind of 19. master control set, it is characterised in that including：
    Processor, memory, bus and communication interface；The processor, the memory, the communication interface pass through described total Line connects and completes mutual communication；
    The communication interface, for being communicated to connect with the node as described in claim 15 or 16, with such as claim 17 or 18 Described master controller communication connection, and/or communicated to connect with slave controller；
    The memory, for depositing program；
    The processor, for performing described program；
    Wherein, described program is used for when judging to exist the master controller for needing to change, and obtaining needs to change master controller The node identification of destination node；
    According to the load state information of other SDN controllers in controller pool, for the main control of destination node distribution renewal Device, the controller pool include at least one SDN controllers, and the master controller of the renewal is in the controller pool SDN controllers；
    The node identification is sent to the master controller of the renewal, the node is obtained for the master controller of the renewal The node type of destination node corresponding to mark, it is regular for destination node configuration control corresponding with the node type, And the control rule is sent to the destination node.
  20. A kind of 20. node, it is characterised in that including：
    Processor, memory, bus and communication interface；The processor, the memory, the communication interface pass through described total Line connects and completes mutual communication；
    The communication interface, communicated to connect with the master control set as described in any in claim 10-14, and will with such as right Ask the master controller described in 17 or 18 to communicate to connect, and/or communicated to connect with slave controller；
    The communication interface is used to receive the control rule that the master controller of renewal is sent；
    Wherein, the master controller of the renewal is that master control set is judging the master controller for needing to change be present, and obtains need After the node identification for changing the destination node of master controller, according to the load condition of other SDN controllers in controller pool Information, for the SDN controllers of destination node distribution；The control rule is that the master controller of the renewal obtains the section Node type corresponding to point identification, for the rule for being used to control corresponding with the node type of destination node configuration； The controller pool includes at least one SDN controllers, and the master controller of the renewal is the SDN controls in the controller pool Device processed；
    The memory, for depositing program；
    The processor, for performing described program；
    Wherein, described program is used to be configured according to the control rule.
  21. A kind of 21. master controller, it is characterised in that including：
    Processor, memory, bus and communication interface；The processor, the memory, the communication interface pass through described total Line connects and completes mutual communication；
    The communication interface, will with such as right for being communicated to connect with the master control set as described in any in claim 10-14 Ask the node described in 15 or 16 to communicate to connect, and/or communicated with slave controller；
    The memory, for depositing program；
    The processor, for performing described program；
    Wherein, described program is used for：Load state information is sent to the master control set, so that the master control set is judging Go out in the presence of needing the master controller changed, and after getting the node identification for the destination node for needing to change master controller, root According to the load state information for other SDN controllers being connected in controller pool with the node, distributed more for the destination node New master controller；The controller pool includes at least one SDN controllers, and the master controller of the renewal is the control SDN controllers in device pond；The node identification that master control set is sent is received, the node identification is that the master control set is judging When going out in the presence of the master controller for needing to change, the identification information for needing to change the destination node of master controller of acquisition；According to institute Node identification is stated, obtains the node type of the destination node corresponding to the node identification；For destination node configuration and institute State control rule corresponding to node type；The control rule is sent to the destination node, so that the destination node root Configured according to the control rule.
  22. 22. a kind of communication system based on SDN, it is characterised in that including as described in any in claim 10-14 or such as power Profit requires the master control set described in 19, section at least one as described in claim 15 or 16 or as claimed in claim 20 Point, and master controller at least one as described in claim 17 or 18 or as claimed in claim 21；
    Communicated to connect between the master control set, the node and the master controller.
CN201380035267.8A 2013-05-06 2013-05-06 Network collocating method, apparatus and system based on SDN Expired - Fee Related CN104412560B (en)

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