CN105357099A - Implementation method of VPN (virtual private network) on basis of SDN (software defined network) - Google Patents
Implementation method of VPN (virtual private network) on basis of SDN (software defined network) Download PDFInfo
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- CN105357099A CN105357099A CN201510949613.4A CN201510949613A CN105357099A CN 105357099 A CN105357099 A CN 105357099A CN 201510949613 A CN201510949613 A CN 201510949613A CN 105357099 A CN105357099 A CN 105357099A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0806—Configuration setting for initial configuration or provisioning, e.g. plug-and-play
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Abstract
The invention provides an implementation method of a VPN (virtual private network) on basis of an SDN (software defined network). The method comprises steps as follows: a user uses a northbound interface provided through an SDN controller to send a service request for establishing the VPN; the SDN controller receives the service request which comes from the user and is used for establishing the VPN, and the service request comprises a service type and service parameters; the SDN controller performs packaging processing on a data packet from a local area network host according to the service type and the service parameters, and the data packet is sent to a designated foreign network through an OpenFlow exchanger; after an SDN controller of the foreign network receives the data packet, corresponding de-encapsulation processing is performed, and the network data packet of a sender is recognized; finally, the VPN is established between networks of two places. According to the method, the VPN is partitioned in an SDN service deployment manner; the problems of single configuration manner, complicated configuration and management and difficulty in maintenance of conventional VPN configuration are solved.
Description
Technical field
Patent of the present invention relates to network communication field, specifically, relates generally to a kind of implementation method of the VPN (virtual private network) based on SDN.
Background technology
Software defined network (SoftwareDefinedNetwork, SDN) be a kind of new network innovation framework, it is a kind of implementation of network virtualization, its core technology OpenFlow is by separating network equipment chain of command and data surface, utilize Programmable Technology, thus achieve the flexible control of network traffics, make network become more intelligent as pipeline.This generation Interworking GateWay key technology of SDN, can promote Future Internet technological innovation.Current Ge great colleges and universities and research institution all pay close attention to the development of SDN technology, and carry out research and the experiment of association area on this basis.
Traditional virtual private network service needs to buy to operation, and expense is more expensive, and Bandwidth-Constrained.User is required static or dynamic remote website route list to be added in the network of service provider, and therefore 3 layers of route test layer of user have been contracted out to MPLS(Multi-ProtocolLabelSwitching, multiprotocol label switching) service provider.And most of service provider forbids that SNMP accesses local device, which has limited the visuality of watching MPLS " bottom " situation.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art, the present invention devises a kind of virtual network division methods based on SDN, be applicable to the Internal Network Construction of a certain enterprise or mechanism, the service of the multiple business communications such as internal data, voice, image between enterprise cross-border (trans-regional) multiple branch can be realized.
The implementation method of a kind of VPN (virtual private network) based on SDN provided by the invention, the method is for the SDN local area network (LAN) belonging to heterogeneous networks, and make the main frame can not exchanged visits between each local area network (LAN) realize exchanging visit intercommunication, it comprises the following steps:
The northbound interface that terminal use is provided by SDN controller, sends the service request creating virtual network to SDN controller; Described service request comprises type of service and service parameter, and SDN controller carries out examination according to type of service and service parameter to packet, adds or mates corresponding empty network mark and know;
SDN controller judges that the destination address of terminal use is this local area network terminal or nonlocal local area network terminal, find that destination address is nonlocal local area network (LAN), then SDN controller is the stream table of two places LAN intercommunication to the stream table that OpenFlow switch issues, the service request data information of this data flow after this arrived is via after described stream list processing, send from OpenFlow switch, and containing correct VLAN label, and route to nonlocal LAN through network;
Other places OpenFlow switch receives the packet known containing empty network mark, its SDN controller is given by packet by PacketIn signaling, the application program that described SDN controller uses user to configure processes packet, the destination address of this packet is the internal network address of this LAN, and SDN controller can set up corresponding stream list item to OpenFlow switch sending controling instruction.
Described type of service comprises speech business, video traffic and data service; Described service parameter is the information of Ingress Network node and the information of egress network node.
Described SDN controller judges that the destination address of terminal use is this local area network terminal, then SDN controller is the stream table of terminal mutual in local area network to the stream table that switch issues, then process according to the pipeline processes flow process of the OpenFlow switch of this local area network (LAN), the packet of this data flow arrived can be processed by this stream list item, is directly forwarded to corresponding local terminal.
The OpenFlow switch of other places LAN receive the packet of far-end local area network (LAN) after when it fails to match with stream table, OpenFlow switch sends message to SDN controller, SDN controller carries out examination according to type of service and service parameter to packet, send order to OpenFlow switch and set up corresponding stream list item, the packet of this data flow after this arrived ejects corresponding VLAN label via after this stream list processing, and is forwarded to destination host suitable in local area network (LAN).
The present invention adopts above technical scheme compared with prior art, has following technique effect:
Method disclosed by the invention, by the service deployment mode of SDN, achieves the division of VPN (virtual private network).Different single with traditional VPN configuration mode, configuration management is complicated, problem difficult in maintenance.VPN (virtual private network) dividing mode based on SDN is flexible, can carry out the virtual network division of various mode according to business demand.
Accompanying drawing explanation
Below with reference to accompanying drawing, the invention will be further described:
Fig. 1 for the present invention is based on the VPN (virtual private network) of SDN implementation method involved by network architecture diagram;
Fig. 2 is the network architecture diagram business scenario figure of the implementation method of the VPN (virtual private network) that the present invention is based on SDN.
Embodiment
The invention provides a kind of implementation method of the VPN (virtual private network) based on SDN, for making object of the present invention, clearly, clearly, and the present invention is described in more detail with reference to accompanying drawing examples for technical scheme and effect.Should be appreciated that concrete enforcement described herein is only in order to explain the present invention, is not intended to limit the present invention.
Branch and main office network are all the LAN based on SDN.Cannot communicate between the main frame of two LAN inside, the northbound interface that user is provided by SDN controller issues to SDN controller the service request that virtual network creates, implemented by the service creation of SDN controller, the foundation of virtual network between two places can be realized, realize between the main frame of strange land just as interconnecting a LAN.
Network virtualization system based on SDN can realize network foundation bearing capacity and call as required and dynamic combined, virtual network setting and bearer management is carried out by mission requirements, the dynamic layout of supporting business stream, ensures to realize the service communication personalizations such as voice, video, instant message.Its specific implementation process is as follows:
The northbound interface that user is provided by SDN controller, sends the service request creating virtual network to SDN controller.This service request comprises type of service and service parameter.SDN controller can carry out examination according to type of service and service parameter to packet, adds or ejects corresponding empty network mark and know.
When the packet of the terminal use in a certain local area network (LAN) arrives switch time, first mate with first stream table in OpenFlow switch streamline, if it fails to match, then illustrate that this stream arrives switch at first time, therefore exchange opportunity is asked for instructions to controller transmission message and how to be processed; If the match is successful, then process according to the pipeline processes flow process of OpenFlow switch.
When with stream, newly arrived packet shows that it fails to match, exchange opportunity sends message to controller, is decided how to process this packet by controller.
The application program that controller uses user to configure processes packet.If a new packet arriving data flow, generally can send to order to switch and set up corresponding stream list item, and decide to do which extra process according to concrete algorithm, and finally be forwarded to which port.
If the destination address of terminal use is terminal in this local area network (LAN), then controller is the stream table of terminal mutual in local area network to the stream table that switch issues, the packet of this data flow after this arrived can be processed by this stream list item, is directly forwarded to corresponding local terminal.
If the destination address of terminal use is nonlocal LAN terminal, then controller is the stream table of two places LAN intercommunication to the stream table that switch issues, the packet of this data flow after this arrived is via after this stream list processing, when OpenFlow switch sends, contain correct VLAN label, and route to nonlocal LAN through network.
The OpenFlow switch of other places LAN receive the packet of far-end local area network (LAN) after when it fails to match with stream table, switch sends message to controller.SDN controller carries out examination according to type of service and service parameter to packet, stream table is issued to switch, the packet of this data flow after this arrived ejects corresponding VLAN label via after this stream list processing, and is forwarded to destination host suitable in local area network (LAN).
Embodiment 1
Set up the course of work of particular virtual network as shown in Figure 2.
1. go to 10.2.0.1 as 10.1.0.1 main frame sends a packet;
2. switch sw1 receives packet, and at this locality stream table, it fails to match, gives SDN controller c1 by PacketIn signaling by packet;
The application program that 3.SDN controller uses user to configure processes packet.The destination address of this packet is the internal network address of nonlocal LAN, and controller can set up corresponding stream list item to switch sending controling instruction.
In this step, if SDN controller is to after packet decapsulation, confirm that packet does not come from the protocol mechanism local area network (LAN) of oneself by analysis, but the not clear packet on network, or malicious attack bag, then can abandon this packet.Flow process terminates.
4., when newly arrived packet and stream table carry out that the match is successful, packet will be given streamline and process by switch, and finally can obtain a set of actions, exchange opportunity performs these actions successively.Packet is gone out from the port repeat of sw1, has been one deck IP and encapsulates on the basis of former packet, and namely source IP is 1.1.1.1, object IP is 2.2.2.2, and the label containing VLAN10; 1.1.1.1 with the public network IP address that 2.2.2.2 is two LAN.
5. packet by backbone network by arriving OpenFlow switch sw2.
6. switch sw2 receives the packet containing VLAN label, gives SDN controller c2 by PacketIn signaling by packet.
The application program that 7.SDN controller uses user to configure processes packet.The destination address of this packet is the internal network address of this LAN, and controller can set up corresponding stream list item to switch sending controling instruction.
Here application program is the application and development program to SDN controller.The northbound interface that user is provided by SDN controller sends the request creating VPN (virtual private network) to SDN controller.We carry out to SDN controller the application and development creating VPN (virtual private network), the application creating VPN (virtual private network) is loaded in SDN controller in modular form, process corresponding user request, and carry out the establishment of corresponding VPN (virtual private network) and issuing of stream table.
8., when newly arrived packet and stream table carry out that the match is successful, packet will be given streamline and process by switch, and finally can obtain a set of actions, exchange opportunity performs these actions successively.The source and destination IP address of the public network of encapsulation before packet can remove when the port of sw2 sends, also no longer containing VLAN label.Packet is sent to 10.2.0.1.
The difference of the request virtual network business that SDN controller can be initiated according to main frame, creates different tunnels.
OpenFlow switch allows on port, add one or more queue, and each queue belongs to a virtual network.Specific practice is that each virtual net on each port of switch belonging to it sets up a queue, and for virtual net provides minimum bandwidth to ensure at this port, and, in fact virtual net can take more that multi-band is wide at link load gentlier.When controller to switch send message specify certain data flow from certain port repeat time, SDN controller it may be noted that it is that queue from this port sends, and the bandwidth between such virtual network have also been obtained isolation.
If the business of the voice server of branch's host request main office network, the request bag of main frame is sent to the SDN controller of branch by branch OpenFlow switch, after branch's SDN controller receives the request bag of OpenFlow switch transmission, the virtual network type of service identifying this request according to destination address is speech business, then in corresponding packet, stamp corresponding virtual network type label.
Such as, speech business VLAN:1, video traffic VLAN:2, data service VLAN:3.
SDN controller also can according to the difference of request virtual network business, for different tunnels distributes different bandwidth.
If video traffic, be then the bandwidth that channel allocation is maximum, such as 100M, if speech business then distributes the bandwidth of taking second place, such as 50M, if data services such as instant messages, then distributes minimum bandwidth, as 5M.Like this can reasonable employment bandwidth, ensure that every business can both be carried out smoothly.
The OpenFlow switch of main office network can be also corresponding allocation of packets forwarding rate according to virtual network type, and packet is forwarded to corresponding service server after receiving the packet and strategy that SDN controller issues.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. based on an implementation method for the VPN (virtual private network) of SDN, it is characterized in that, the method is for the SDN local area network (LAN) belonging to heterogeneous networks, and make the main frame can not exchanged visits between each local area network (LAN) realize exchanging visit intercommunication, it comprises the following steps:
The northbound interface that terminal use is provided by SDN controller, sends the service request creating virtual network to SDN controller; Described service request comprises type of service and service parameter, and SDN controller carries out examination according to type of service and service parameter to packet, adds or mates corresponding empty network mark and know;
SDN controller judges that the destination address of terminal use is this local area network terminal or nonlocal local area network terminal, find that destination address is nonlocal local area network (LAN), then SDN controller is the stream table of two places LAN intercommunication to the stream table that OpenFlow switch issues, the service request data information of this data flow after this arrived is via after described stream list processing, send from OpenFlow switch, and containing correct VLAN label, and route to nonlocal LAN through network;
Other places OpenFlow switch receives the packet known containing empty network mark, its SDN controller is given by packet by PacketIn signaling, the application program that described SDN controller uses user to configure processes packet, the destination address of this packet is the internal network address of this LAN, and SDN controller can set up corresponding stream list item to OpenFlow switch sending controling instruction.
2. the implementation method of a kind of VPN (virtual private network) based on SDN according to claim 1, is characterized in that: described type of service comprises speech business, video traffic and data service; Described service parameter is the information of Ingress Network node and the information of egress network node.
3. the implementation method of a kind of VPN (virtual private network) based on SDN according to claim 1, it is characterized in that: described SDN controller judges that the destination address of terminal use is this local area network terminal, then SDN controller is the stream table of terminal mutual in local area network to the stream table that switch issues, then process according to the pipeline processes flow process of the OpenFlow switch of this local area network (LAN), the packet of this data flow arrived can be processed by this stream list item, is directly forwarded to corresponding local terminal.
4. the implementation method of a kind of VPN (virtual private network) based on SDN according to claim 1, is characterized in that:
The OpenFlow switch of other places LAN receive the packet of far-end local area network (LAN) after when it fails to match with stream table, OpenFlow switch sends message to SDN controller, SDN controller carries out examination according to type of service and service parameter to packet, send order to OpenFlow switch and set up corresponding stream list item, the packet of this data flow after this arrived ejects corresponding VLAN label via after this stream list processing, and is forwarded to destination host suitable in local area network (LAN).
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106131914A (en) * | 2016-07-15 | 2016-11-16 | 北京邮电大学 | The processing method of service request and processing means |
| CN106550043A (en) * | 2016-11-25 | 2017-03-29 | 中国银联股份有限公司 | Cloud computing system based on SDN networking technologys |
| CN106899476A (en) * | 2017-02-07 | 2017-06-27 | 佛山易识科技有限公司 | The VLL control device under SDN frameworks is realized on traditional routing |
| WO2017181779A1 (en) * | 2016-04-23 | 2017-10-26 | 华为技术有限公司 | Method of generating radio access network slice, radio access network, and slice manager |
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| CN107566237A (en) * | 2016-06-30 | 2018-01-09 | 中兴通讯股份有限公司 | A kind of data message processing method and device |
| CN107579897A (en) * | 2017-09-14 | 2018-01-12 | 广州西麦科技股份有限公司 | A kind of method and device based on OpenDaylight configurations VPN |
| CN108809797A (en) * | 2018-07-26 | 2018-11-13 | 哈尔滨工业大学（威海） | A kind of VPN control devices define VPN and realize system and method |
| CN109474506A (en) * | 2018-11-15 | 2019-03-15 | 中国联合网络通信集团有限公司 | Establish the method and device of Virtual Private Network vpn service |
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| CN113794617A (en) * | 2021-08-31 | 2021-12-14 | 新华三信息安全技术有限公司 | Open flow Openflow instance binding method and device |
| CN114615108A (en) * | 2020-11-23 | 2022-06-10 | 中国联合网络通信集团有限公司 | Virtual private network private line opening method, platform and equipment |
| CN115842734A (en) * | 2023-01-30 | 2023-03-24 | 阿里巴巴（中国）有限公司 | Network management method, controller and SDN (software defined network) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104320267A (en) * | 2014-10-29 | 2015-01-28 | 武汉绿色网络信息服务有限责任公司 | ARP broadcast restraining system and method for achieving VxLAN based on SDN framework |
| US20150043382A1 (en) * | 2013-08-09 | 2015-02-12 | Nec Laboratories America, Inc. | Hybrid network management |
| CN105072037A (en) * | 2015-07-23 | 2015-11-18 | 北京航空航天大学 | Dynamic flow generating method for distributed SDN controllers |
-
2015
- 2015-12-18 CN CN201510949613.4A patent/CN105357099A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150043382A1 (en) * | 2013-08-09 | 2015-02-12 | Nec Laboratories America, Inc. | Hybrid network management |
| CN104320267A (en) * | 2014-10-29 | 2015-01-28 | 武汉绿色网络信息服务有限责任公司 | ARP broadcast restraining system and method for achieving VxLAN based on SDN framework |
| CN105072037A (en) * | 2015-07-23 | 2015-11-18 | 北京航空航天大学 | Dynamic flow generating method for distributed SDN controllers |
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| US10917831B2 (en) | 2016-04-23 | 2021-02-09 | Huawei Technologies Co., Ltd. | Radio access network slice generation method, radio access network, and slice manager |
| WO2017181779A1 (en) * | 2016-04-23 | 2017-10-26 | 华为技术有限公司 | Method of generating radio access network slice, radio access network, and slice manager |
| CN107306438A (en) * | 2016-04-23 | 2017-10-31 | 华为技术有限公司 | A kind of generation method of wireless access network section, wireless access network and section manager |
| WO2017193848A1 (en) * | 2016-05-10 | 2017-11-16 | 新华三技术有限公司 | Route establishment and message sending |
| CN107566237A (en) * | 2016-06-30 | 2018-01-09 | 中兴通讯股份有限公司 | A kind of data message processing method and device |
| CN106131914B (en) * | 2016-07-15 | 2019-12-20 | 北京邮电大学 | Service request processing method and processing device |
| CN106131914A (en) * | 2016-07-15 | 2016-11-16 | 北京邮电大学 | The processing method of service request and processing means |
| CN106550043B (en) * | 2016-11-25 | 2020-03-31 | 中国银联股份有限公司 | Cloud computing system based on SDN networking technology |
| CN106550043A (en) * | 2016-11-25 | 2017-03-29 | 中国银联股份有限公司 | Cloud computing system based on SDN networking technologys |
| CN106899476A (en) * | 2017-02-07 | 2017-06-27 | 佛山易识科技有限公司 | The VLL control device under SDN frameworks is realized on traditional routing |
| CN107579897B (en) * | 2017-09-14 | 2018-11-09 | 广州西麦科技股份有限公司 | A kind of method and device configuring VPN based on OpenDaylight |
| CN107579897A (en) * | 2017-09-14 | 2018-01-12 | 广州西麦科技股份有限公司 | A kind of method and device based on OpenDaylight configurations VPN |
| CN108809797B (en) * | 2018-07-26 | 2020-09-08 | 哈尔滨工业大学（威海） | VPN control device, software-defined VPN implementation system and method |
| CN108809797A (en) * | 2018-07-26 | 2018-11-13 | 哈尔滨工业大学（威海） | A kind of VPN control devices define VPN and realize system and method |
| CN109474506A (en) * | 2018-11-15 | 2019-03-15 | 中国联合网络通信集团有限公司 | Establish the method and device of Virtual Private Network vpn service |
| CN112449751A (en) * | 2019-06-28 | 2021-03-05 | 华为技术有限公司 | Data transmission method, switch and station |
| US11870701B2 (en) | 2019-06-28 | 2024-01-09 | Huawei Technologies Co., Ltd. | Data transmission method, switch, and site |
| CN112449751B (en) * | 2019-06-28 | 2022-08-26 | 华为云计算技术有限公司 | Data transmission method, switch and station |
| CN114615108A (en) * | 2020-11-23 | 2022-06-10 | 中国联合网络通信集团有限公司 | Virtual private network private line opening method, platform and equipment |
| CN114615108B (en) * | 2020-11-23 | 2023-05-09 | 中国联合网络通信集团有限公司 | Method, platform and equipment for opening special line of virtual private network |
| CN113794617B (en) * | 2021-08-31 | 2023-04-07 | 新华三信息安全技术有限公司 | Open flow Openflow instance binding method and device |
| CN113794617A (en) * | 2021-08-31 | 2021-12-14 | 新华三信息安全技术有限公司 | Open flow Openflow instance binding method and device |
| CN115842734A (en) * | 2023-01-30 | 2023-03-24 | 阿里巴巴（中国）有限公司 | Network management method, controller and SDN (software defined network) |
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Application publication date: 20160224 |