CN105450495A - Method, device and system for re-establishing secure communication channel - Google Patents
Method, device and system for re-establishing secure communication channel Download PDFInfo
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Abstract
The invention discloses a method, a device and a system for re-establishing a secure communication channel. The method comprises the steps of: sending a channel connection information change notification to an OpenFlow switch (which has established a connection) based on a current connecting channel when an SDN controller receives a request for modifying channel connection information sent by an application module, wherein the channel connection information change notification includes channel connection information which has changed, so that the OpenFlow switch can update locally configured channel connection information; updating self-configured channel connection information if judging that the OpenFlow switch has successfully updated the locally configured channel connection information when a channel connection information change response sent by the OpenFlow switch is received; and establishing a new secure channel with the OpenFlow switch by utilizing the channel connection information updated based on local configuration when a new channel establishment request sent by the OpenFlow switch is received. Therefore, the real-time performance of communication between the SDN controller and the OpenFlow switch can be improved, the maintenance workload is greatly reduced, and the service awareness of users is improved.
Description
Technical field
The present invention relates to the communications field, particularly a kind of methods, devices and systems for re-establishing secured communication channel.
Background technology
OpenFlow (open flows, be called for short: OF) switch is shown (FlowTable), group table (GroupTable) by one or more stream and led to SDN (SoftwareDefinedNetworking, software defined network) controller OpenFlow escape way (securechannel) form, as shown in Figure 1.OpenFlow escape way is the interface connecting OpenFlow switch and SDN controller, adopt TCP (TransmissionControlProtocol, transmission control protocol) connect, usual use TLS (TransportLayerSecurity, Transport Layer Security) encrypts.SDN controller manages OpenFlow switch by this interface, and receives event from OpenFlow switch or send message to OpenFlow switch.
Usual SDN controller all can bind a well-known address (as IP address+port numbers) when startup, for setting up OpenFlow escape way, and provides the Socket communication service with OpenFlow switch.And in reality, being subject to the impact of the factor such as network adjusting and optimizing, controller backup, the IP address of SDN controller and port numbers may change frequently, thus cause original escape way disconnecting.
In order to keep the foundation of passage, needing attendant to carry out manual configuration one by one to all OpenFlow switches under this SDN controller at present, being configured to concurrent of SDN controller channel link information after changing and re-establishing secured communication channel.
As shown in Figure 2, existing escape way Establishing process is as follows:
Step 1, SDN controller and OpenFlow switch set up secured communication channel.
Step 2, application module sends the request of amendment SDN controller channel link information to SDN controller.
Step 3, after SDN controller receives request, amendment SDN controller channel link information.
Step 4, SDN controller sends the success response of amendment SDN controller channel link information to application module.
Step 5, SDN controller disconnects the secured communication channel set up with OpenFlow switch.
Step 6, at OpenFlow exchanger side manual configuration communication connection information.
Step 7, SDN controller and OpenFlow switch re-establish secured communication channel.
Obviously, when network size is larger, workload will become very huge.
Summary of the invention
The embodiment of the present invention provides a kind of methods, devices and systems for re-establishing secured communication channel.The real-time of SDN controller and OpenFlow switch communication can be promoted, greatly alleviate maintenance workload, improve the service-aware of user simultaneously.
According to an aspect of the present invention, a kind of method for re-establishing secured communication channel being provided, comprising:
When receiving the amendment expanding channels information request that application module sends, based on current interface channel to the OpenFlow switch sendaisle link information change notification connected, wherein expanding channels information change notice comprises the expanding channels information self changed, so that described OpenFlow switch upgrades the expanding channels information of local configuration;
When receiving the expanding channels information change response that described OpenFlow switch sends, judge whether described OpenFlow switch successfully upgrades the expanding channels information of local configuration according to the response of expanding channels information change;
If described OpenFlow switch successfully upgrades the expanding channels information of local configuration, then upgrade the expanding channels information of self configuration;
When receiving described OpenFlow switch and sending new tunnel foundation request, the expanding channels information after local config update and described OpenFlow switch is utilized to set up new escape way; Wherein said OpenFlow switch starts timer after receiving expanding channels information change notice, sends described new tunnel set up request after timing expires according to the expanding channels information of current this locality configuration.
In one embodiment, the described expanding channels information self changed comprises the IP address and port numbers that change.
In one embodiment, expanding channels information change notice also comprises time interval information, so that described OpenFlow switch is using the timing of described time interval information as described timer.
In one embodiment, expanding channels information change notice is Echorequest message;
The response of expanding channels information change is Echoreply message.
In one embodiment, MsgType, NewIP-Addr, NewPortNo, LinkRequest-interval field is increased in Echorequest message, wherein MsgType field description current message is expanding channels information change notice, the IP address that NewIP-Addr field description changes, the port numbers that NewPortNo field description changes, LinkRequest-interval field description initiates the time interval of new connection establishment request;
In Echoreply message, increase MsgType, Result field, wherein MsgType field description current message is the response of expanding channels information change, and whether Result field description OpenFlow switch successfully upgrades the expanding channels information of local configuration.
According to a further aspect in the invention, a kind of SDN controller for re-establishing secured communication channel being provided, comprising first interface unit, the second interface unit, recognition unit, updating block and Path Setup unit, wherein:
First interface unit, for receiving the amendment expanding channels information request that application module sends;
Second interface unit, for receive when first interface unit application module send amendment expanding channels information request time, based on current interface channel to the OpenFlow switch sendaisle link information change notification connected, wherein expanding channels information change notice comprises the expanding channels information self changed, so that described OpenFlow switch upgrades the expanding channels information of local configuration;
Recognition unit, when the expanding channels information change sent for receiving described OpenFlow switch when the second interface unit is replied, judge whether described OpenFlow switch successfully upgrades the expanding channels information of local configuration according to the response of expanding channels information change;
Updating block, for the judged result according to recognition unit, if described OpenFlow switch successfully upgrades the expanding channels information of local configuration, then upgrades the expanding channels information of self configuration;
Path Setup unit, during for receiving the foundation request of described OpenFlow switch transmission new tunnel when the second interface unit, utilizes the expanding channels information after local config update and described OpenFlow switch to set up new escape way; Wherein said OpenFlow switch starts timer after receiving expanding channels information change notice, sends described new tunnel set up request after timing expires according to the expanding channels information of current this locality configuration.
In one embodiment, the described expanding channels information self changed comprises the IP address and port numbers that change.
In one embodiment, expanding channels information change notice also comprises time interval information, so that described OpenFlow switch is using the timing of described time interval information as described timer.
In one embodiment, expanding channels information change notice is Echorequest message;
The response of expanding channels information change is Echoreply message.
In one embodiment, MsgType, NewIP-Addr, NewPortNo, LinkRequest-interval field is increased in Echorequest message, wherein MsgType field description current message is expanding channels information change notice, the IP address that NewIP-Addr field description changes, the port numbers that NewPortNo field description changes, LinkRequest-interval field description initiates the time interval of new connection establishment request;
In Echoreply message, increase MsgType, Result field, wherein MsgType field description current message is the response of expanding channels information change, and whether Result field description OpenFlow switch successfully upgrades the expanding channels information of local configuration.
According to a further aspect in the invention, providing a kind of system for re-establishing secured communication channel, comprising SDN controller, OpenFlow switch, wherein:
SDN controller is the SDN controller that above-mentioned any embodiment relates to;
OpenFlow switch, for when receiving the expanding channels information change notice that SDN controller sends, according to the expanding channels information of expanding channels information updating this locality configuration that SDN controller self changes, start timer, and to SDN controller sendaisle link information change response; After the timing of timer expires, send new tunnel according to the expanding channels information after local config update to SDN controller and set up request.
In one embodiment, expanding channels information change also for when receiving the expanding channels information change notice that SDN controller sends, is notified the time interval information that the comprises timing as described timer by OpenFlow switch.
The present invention by when the expanding channels information of SDN controller changes, can in time by the synchronizing information after change to OpenFlow exchanger side, notify that OpenFlow switch is initiated new connection request and sets up escape way simultaneously automatically.Thus the real-time of SDN controller and OpenFlow switch communication can be promoted, greatly alleviate maintenance workload, improve the service-aware of user simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of SDN controller and OpenFlow switchboard unit network.
Fig. 2 is escape way Establishing process schematic diagram in prior art.
Fig. 3 is that the present invention is for re-establishing the schematic diagram of a method embodiment of secured communication channel.
Fig. 4 is the schematic diagram of a SDN controller of the present invention embodiment.
Fig. 5 is that the present invention is for re-establishing the schematic diagram of a system embodiment of secured communication channel.
Fig. 6 is the SDN controller block diagram after the present invention optimizes.
Fig. 7 is SDN configuration diagram.
Fig. 8 is the information exchange schematic diagram that the present invention re-establishes secured communication channel.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Fig. 3 is that the present invention is for re-establishing the schematic diagram of a method embodiment of secured communication channel.Preferably, the method step of the present embodiment can be performed by SDN controller.
Step 301, when receiving the amendment expanding channels information request that application module sends, based on current interface channel to the OpenFlow switch sendaisle link information change notification connected.
Wherein expanding channels information change notice comprises the expanding channels information self changed, so that described OpenFlow switch upgrades the expanding channels information of local configuration.
Preferably, the expanding channels information self changed comprises the IP address and port numbers that change.
According to the response of expanding channels information change, step 302, when receiving the expanding channels information change response that described OpenFlow switch sends, judges whether described OpenFlow switch successfully upgrades the expanding channels information of local configuration.
Step 303, if described OpenFlow switch successfully upgrades the expanding channels information of local configuration, then upgrades the expanding channels information of self configuration.
Step 304, when receiving described OpenFlow switch and sending new tunnel foundation request, utilizes the expanding channels information after local config update and described OpenFlow switch to set up new escape way.
Wherein said OpenFlow switch starts timer after receiving expanding channels information change notice, sends described new tunnel set up request after timing expires according to the expanding channels information of current this locality configuration.
Preferably, expanding channels information change notice also comprises time interval information, so that described OpenFlow switch is using the timing of described time interval information as described timer.
Based on the method for re-establishing secured communication channel that the above embodiment of the present invention provides, when the expanding channels information of SDN controller changes, can in time by the synchronizing information after change to OpenFlow exchanger side, notify that OpenFlow switch is initiated new connection request and sets up escape way simultaneously automatically.Thus the real-time of SDN controller and OpenFlow switch communication can be promoted, greatly alleviate maintenance workload, improve the service-aware of user simultaneously.
In OpenFlow agreement, define Echo message, this is a kind of Symmetric message, and either party in SDN controller and OpenFlow switch can initiate Echorequest message, but the side received must respond Echoreply message.Such as, expanding channels information change notice is Echorequest message, and the response of expanding channels information change is Echoreply message.
In order to realize above-mentioned functions, need to expand as follows Echo message:
1) Echorequest message is expanded
MsgType, NewIP-Addr, NewPortNo, LinkRequest-interval field is increased in Echorequest message, wherein MsgType field description current message is expanding channels information change notice, the IP address that NewIP-Addr field description changes, the port numbers that NewPortNo field description changes, LinkRequest-interval field description initiates the time interval of new connection establishment request.As shown in table 1.
Table 1
2) Echoreply message is expanded
In Echoreply message, increase MsgType, Result field, wherein MsgType field description current message is the response of expanding channels information change, and whether Result field description OpenFlow switch successfully upgrades the expanding channels information of local configuration.As shown in table 2.
Table 2
Fig. 4 is the schematic diagram of a SDN controller of the present invention embodiment.As shown in Figure 4, SDN controller can comprise first interface unit 401, second interface unit 402, recognition unit 403, updating block 404 and Path Setup unit 405.Wherein:
First interface unit 401, for receiving the amendment expanding channels information request that application module sends.
Second interface unit 402, for receive when first interface unit 401 application module send amendment expanding channels information request time, based on current interface channel to the OpenFlow switch sendaisle link information change notification connected, wherein expanding channels information change notice comprises the expanding channels information self changed, so that described OpenFlow switch upgrades the expanding channels information of local configuration.
Recognition unit 403, when the expanding channels information change sent for receiving described OpenFlow switch when the second interface unit 402 is replied, judge whether described OpenFlow switch successfully upgrades the expanding channels information of local configuration according to the response of expanding channels information change.
Updating block 404, for the judged result according to recognition unit 403, if described OpenFlow switch successfully upgrades the expanding channels information of local configuration, then upgrades the expanding channels information of self configuration.
Path Setup unit 405, during for receiving the foundation request of described OpenFlow switch transmission new tunnel when the second interface unit 402, utilizes the expanding channels information after local config update and described OpenFlow switch to set up new escape way; Wherein said OpenFlow switch starts timer after receiving expanding channels information change notice, sends described new tunnel set up request after timing expires according to the expanding channels information of current this locality configuration.
Based on the SDN controller for re-establishing secured communication channel that the above embodiment of the present invention provides, when the expanding channels information of SDN controller changes, can in time by the synchronizing information after change to OpenFlow exchanger side, notify that OpenFlow switch is initiated new connection request and sets up escape way simultaneously automatically.Thus the real-time of SDN controller and OpenFlow switch communication can be promoted, greatly alleviate maintenance workload, improve the service-aware of user simultaneously.
Preferably, the expanding channels information self changed comprises the IP address and port numbers that change.
Preferably, expanding channels information change notice also comprises time interval information, so that described OpenFlow switch is using the timing of described time interval information as described timer.
In one embodiment, expanding channels information change notice is Echorequest message, and the response of expanding channels information change is Echoreply message.
Preferably, MsgType, NewIP-Addr, NewPortNo, LinkRequest-interval field is increased in Echorequest message, wherein MsgType field description current message is expanding channels information change notice, the IP address that NewIP-Addr field description changes, the port numbers that NewPortNo field description changes, LinkRequest-interval field description initiates the time interval of new connection establishment request.
In Echoreply message, increase MsgType, Result field, wherein MsgType field description current message is the response of expanding channels information change, and whether Result field description OpenFlow switch successfully upgrades the expanding channels information of local configuration.
Fig. 5 is that the present invention is for re-establishing the schematic diagram of a system embodiment of secured communication channel.As shown in Figure 5, this system can comprise SDN controller 501, OpenFlow switch 502.Wherein:
SDN controller 501 is the SDN controller that any embodiment in Fig. 4 relates to.
OpenFlow switch 502, for when receiving the expanding channels information change notice that SDN controller 501 sends, according to the expanding channels information of expanding channels information updating this locality configuration that SDN controller self changes, start timer, and to SDN controller 501 sendaisle link information change response; After the timing of timer expires, send new tunnel according to the expanding channels information after local config update to SDN controller 501 and set up request.
Based on the system for re-establishing secured communication channel that the above embodiment of the present invention provides, when the expanding channels information of SDN controller changes, can in time by the synchronizing information after change to OpenFlow exchanger side, notify that OpenFlow switch is initiated new connection request and sets up escape way simultaneously automatically.Thus the real-time of SDN controller and OpenFlow switch communication can be promoted, greatly alleviate maintenance workload, improve the service-aware of user simultaneously.
Preferably, expanding channels information change also for when receiving the expanding channels information change notice that SDN controller sends, is notified the time interval information that the comprises timing as described timer by OpenFlow switch 502.
In one embodiment, the SDN controller block diagram after optimizing according to the present invention as shown in Figure 6.Wherein, the SDN controller after optimization mainly comprises network operating system (NOS), resource database (RDB) module, former Socket module and new Socket module.Topology and corresponding escape way link information (as IP address, the port numbers etc.) unification of network are kept in RDB; NOS, as the nucleus module of control centre, for upper strata APP (as webmaster APP) provides platform service, comprises application and loads and maintenance, messenger service, event registration and callback mechanism, discovering network topology etc.; Former Socket module and new Socket module provide the function of SDN controller south orientation and OpenFlow switch communication, by Openflow agreement, realize the function such as Topology Discovery and configuration management of OpenFlow switch, and read the information that OpenFlow switch reports, the equipment state of monitoring OpenFlow switch.SDN controller north orientation provides open api interface, and allows user oneself to carry out customizing and secondary development.
Below by a concrete example, the present invention will be described.
As shown in Figure 7, due to IP address resource problem, the IP address of network planning personnel requirement to the SDN controller A in network adjusts a SDN, and change 219.142.11.56 into from 219.143.122.23, port numbers 6633 remains unchanged.Corresponding information interaction as shown in Figure 8.
Step 801, SDN controller and OpenFlow switch set up secured communication channel.
Step 802, after network O&M personnel receive SDN controller IP address change notice, sends the request of amendment SDN controller channel link information by respective application to SDN controller.
Step 803, SDN controller by the escape way of existing foundation, to all OpenFlow switch sendaisle link information change notification message connected.The primary fields of this message is as shown in table 3.
Table 3
Step 804, after OpenFlow switch receives notice, upgrades the IP address of the SDN controller of local configuration.
Step 805, OpenFlow switch starts timer according to the duration value of LinkRequest-interval Field Definition.
Step 806, the response of expanding channels information change, by the escape way of existing foundation, is sent to SDN controller by OpenFlow switch.The primary fields of this response is as shown in table 4.
Table 4
Step 807, after SDN controller receives response, upgrades the IP address information of local configuration.
Step 808, SDN controller returns amendment SDN controller channel link information success message to application.
Step 809, OpenFlow switch upon expiry of the timer, sends new tunnel to SDN controller and sets up request.
Step 810, SDN controller re-establishes secured communication channel with OpenFlow switch after receiving new tunnel foundation request.
By implementing the present invention, following beneficial effect can be obtained.
1., based on SDN framework and main flow Openflow protocol realization, comply with future network development trend;
2. effectively utilize original communication port, automatically quick by the expanding channels message notice of SDN controller to OpenFlow switch;
3.OpenFlow switch initiates time interval of connection request again can random arrangement or artificially specify, the impact to SDN controller simultaneously when effectively avoiding a large amount of OpenFlow switch to reconnect.
In addition, because the present invention is without the need to manual intervention, can when SDN controller channel link information changes, automatically re-establishing of SDN controller and OpenFlow switch communication passage is realized, greatly alleviate the configuration effort amount of attendant, effectively can reduce the running cost (Opex) of operator, and promote the service-aware of user to a certain extent.The present invention has applicability comparatively widely, has both been applicable to pure OpenFlow application scene, has also been applicable to the application scene of mixed mode.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
Description of the invention provides in order to example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (12)
1. for re-establishing a method for secured communication channel, it is characterized in that, comprising:
When receiving the amendment expanding channels information request that application module sends, based on current interface channel to the OpenFlow switch sendaisle link information change notification connected, wherein expanding channels information change notice comprises the expanding channels information self changed, so that described OpenFlow switch upgrades the expanding channels information of local configuration;
When receiving the expanding channels information change response that described OpenFlow switch sends, judge whether described OpenFlow switch successfully upgrades the expanding channels information of local configuration according to the response of expanding channels information change;
If described OpenFlow switch successfully upgrades the expanding channels information of local configuration, then upgrade the expanding channels information of self configuration;
When receiving described OpenFlow switch and sending new tunnel foundation request, the expanding channels information after local config update and described OpenFlow switch is utilized to set up new escape way; Wherein said OpenFlow switch starts timer after receiving expanding channels information change notice, sends described new tunnel set up request after timing expires according to the expanding channels information of current this locality configuration.
2. method according to claim 1, is characterized in that,
The described expanding channels information self changed comprises the IP address and port numbers that change.
3. method according to claim 2, is characterized in that,
Expanding channels information change notice also comprises time interval information, so that described OpenFlow switch is using the timing of described time interval information as described timer.
4. method according to claim 3, is characterized in that,
Expanding channels information change notice is Echorequest message;
The response of expanding channels information change is Echoreply message.
5. method according to claim 4, is characterized in that, also comprises:
MsgType, NewIP-Addr, NewPortNo, LinkRequest-interval field is increased in Echorequest message, wherein MsgType field description current message is expanding channels information change notice, the IP address that NewIP-Addr field description changes, the port numbers that NewPortNo field description changes, LinkRequest-interval field description initiates the time interval of new connection establishment request;
In Echoreply message, increase MsgType, Result field, wherein MsgType field description current message is the response of expanding channels information change, and whether Result field description OpenFlow switch successfully upgrades the expanding channels information of local configuration.
6. for re-establishing a SDN controller for secured communication channel, it is characterized in that, comprising first interface unit, the second interface unit, recognition unit, updating block and Path Setup unit, wherein:
First interface unit, for receiving the amendment expanding channels information request that application module sends;
Second interface unit, for receive when first interface unit application module send amendment expanding channels information request time, based on current interface channel to the OpenFlow switch sendaisle link information change notification connected, wherein expanding channels information change notice comprises the expanding channels information self changed, so that described OpenFlow switch upgrades the expanding channels information of local configuration;
Recognition unit, when the expanding channels information change sent for receiving described OpenFlow switch when the second interface unit is replied, judge whether described OpenFlow switch successfully upgrades the expanding channels information of local configuration according to the response of expanding channels information change;
Updating block, for the judged result according to recognition unit, if described OpenFlow switch successfully upgrades the expanding channels information of local configuration, then upgrades the expanding channels information of self configuration;
Path Setup unit, during for receiving the foundation request of described OpenFlow switch transmission new tunnel when the second interface unit, utilizes the expanding channels information after local config update and described OpenFlow switch to set up new escape way; Wherein said OpenFlow switch starts timer after receiving expanding channels information change notice, sends described new tunnel set up request after timing expires according to the expanding channels information of current this locality configuration.
7. SDN controller according to claim 6, is characterized in that,
The described expanding channels information self changed comprises the IP address and port numbers that change.
8. SDN controller according to claim 7, is characterized in that,
Expanding channels information change notice also comprises time interval information, so that described OpenFlow switch is using the timing of described time interval information as described timer.
9. SDN controller according to claim 8, is characterized in that,
Expanding channels information change notice is Echorequest message;
The response of expanding channels information change is Echoreply message.
10. SDN controller according to claim 9, is characterized in that, also comprise:
MsgType, NewIP-Addr, NewPortNo, LinkRequest-interval field is increased in Echorequest message, wherein MsgType field description current message is expanding channels information change notice, the IP address that NewIP-Addr field description changes, the port numbers that NewPortNo field description changes, LinkRequest-interval field description initiates the time interval of new connection establishment request;
In Echoreply message, increase MsgType, Result field, wherein MsgType field description current message is the response of expanding channels information change, and whether Result field description OpenFlow switch successfully upgrades the expanding channels information of local configuration.
11. 1 kinds, for re-establishing the system of secured communication channel, is characterized in that, comprise SDN controller, OpenFlow switch, wherein:
SDN controller, the SDN controller related to any one of claim 6-10;
OpenFlow switch, for when receiving the expanding channels information change notice that SDN controller sends, according to the expanding channels information of expanding channels information updating this locality configuration that SDN controller self changes, start timer, and to SDN controller sendaisle link information change response; After the timing of timer expires, send new tunnel according to the expanding channels information after local config update to SDN controller and set up request.
12. systems according to claim 11, is characterized in that,
Expanding channels information change also for when receiving the expanding channels information change notice that SDN controller sends, is notified the time interval information that the comprises timing as described timer by OpenFlow switch.
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| CN106453011B (en) * | 2016-11-30 | 2019-12-10 | 海信集团有限公司 | network connection method of intelligent household equipment and intelligent household gateway |
| WO2019119836A1 (en) * | 2017-12-20 | 2019-06-27 | 华为技术有限公司 | Message processing method and device |
| CN109951397A (en) * | 2017-12-20 | 2019-06-28 | 华为技术有限公司 | The method and apparatus of Message processing |
| CN109951397B (en) * | 2017-12-20 | 2021-07-20 | 华为技术有限公司 | Message processing method and device |
| CN108777697A (en) * | 2018-04-09 | 2018-11-09 | 中国电信股份有限公司上海分公司 | A method of slow down SDN switch to controller network-impacting load |
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|---|---|
| CN105450495B (en) | 2018-09-21 |
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