WO2017181637A1 - 基于open_flow协议的sdn网络l2vpn实现方法及系统 - Google Patents
基于open_flow协议的sdn网络l2vpn实现方法及系统 Download PDFInfo
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- WO2017181637A1 WO2017181637A1 PCT/CN2016/102798 CN2016102798W WO2017181637A1 WO 2017181637 A1 WO2017181637 A1 WO 2017181637A1 CN 2016102798 W CN2016102798 W CN 2016102798W WO 2017181637 A1 WO2017181637 A1 WO 2017181637A1
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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
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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]
- H04L12/4645—Details on frame tagging
- H04L12/4666—Operational details on the addition or the stripping of a tag in a frame, e.g. at a provider edge node
-
- 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
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
Definitions
- the present invention relates to the field of SDN networks, and in particular, to a method and system for implementing an SDN network L2VPN based on the OPEN_FLOW protocol.
- the purpose of the present invention is to overcome the deficiencies of the above background art, and to provide an implementation method and system for an SDN network L2VPN based on the OPEN_FLOW protocol, which provides great help for an operator to quickly open a customer dedicated line service under the SDN network architecture, and the network is no longer dependent.
- the service provider can quickly open the collection service through the android-based APP software provided by the equipment manufacturer.
- the invention provides an implementation method of an SDN network L2VPN based on the OPEN_FLOW protocol, comprising the following steps:
- NNI service model is implemented by a primary flow table and a three-level nested group table:
- the first level flow table is used to identify the user data packet; when the matching field of the user data stream has a corresponding flow entry matching, the corresponding application action of the first level flow table is executed; Level nested group table for processing;
- the pseudo-line label is encapsulated according to the bucket action in the group table, and the data stream enters after processing.
- the second level group table is processed;
- the label switching path LSP label is encapsulated according to the bucket action in the group table.
- the data stream enters the third-level group table for processing after processing;
- the NNI---> UNI service model of the SDN Layer 2 VPN is implemented by a three-level flow table and a first-level group table:
- the first level flow table is used to identify the packets on the network side, and the data flow on the network side has corresponding The flow entry is matched, and the corresponding application action of the first-level flow table is executed, and the data flow is transferred to the second-level flow table;
- the second-level flow table is used to match the LSP label on the network side, and the egress action in the action action pops up the LSP label on the network side, and then the data flow is switched to the third-level flow table.
- the third-level flow table is used to process the inner layer pseudo-line label.
- the application action of the third-level flow table is executed, when all the third-level flow tables are After the application action is executed, the data flow will be transferred to the group table, and the group table determines the export of the data packet.
- the first level flow table is a three-state content address memory table.
- the matching domain of the first-level flow table is a receiving port + Vlan + Ethernet type, and is used for performing shunt processing on different user data.
- step A after the egress lookup is performed in the third-level group table, if there is a link aggregation protection related configuration, the process proceeds to the link aggregation process.
- the group table has a related process of the user label. If the user label does not need to be processed, the user message is directly sent from a specified physical port.
- the invention also provides an SDN network L2VPN implementation system based on the OPEN_FLOW protocol, which comprises a software defined network SDN layer 2 virtual private network VPN user network interface UNI---> network-network interface NNI service model and SDN Layer 2 VPN NNI--->UNI business model,
- the UNI--->NNI service model of the SDN Layer 2 VPN is implemented by a primary flow table and a three-level nested group table:
- the first level flow table is used to identify user data packets; when the user data stream matches If the corresponding flow entry is matched, the corresponding application action of the first-level flow table is executed; the subsequent service is transferred to the three-level nested group table for processing;
- the pseudo-line label is encapsulated according to the bucket action in the group table, and the data stream enters after processing.
- the second level group table is processed;
- the label switching path LSP label is encapsulated according to the bucket action in the group table.
- the data stream enters the third-level group table for processing after processing;
- the NNI---> UNI service model of the SDN Layer 2 VPN is implemented by a three-level flow table and a first-level group table:
- the first-level flow table is used to identify the packet on the network side.
- the corresponding application action of the first-level flow table is executed, and the data flow is switched to the second-level flow table.
- the second-level flow table is used to match the LSP label on the network side, and the egress action in the action action pops up the LSP label on the network side, and then the data flow is switched to the third-level flow table.
- the third-level flow table is used to process the inner layer pseudo-line label.
- the application action of the third-level flow table is executed, when all the third-level flow tables are After the application action is executed, the data flow will be transferred to the group table, and the group table determines the export of the data packet.
- the first level flow table is a three-state content address memory table.
- the matching domain of the first-level flow table is a receiving port + Vlan + Ethernet type, and is used for performing shunt processing on different user data.
- the group table has related processing of user tags, and if the user tags do not need to be processed, the user reports The text is sent directly from a specified physical port.
- the present invention greatly assists the operator to quickly open the customer dedicated line service under the SDN network architecture.
- the network opening is no longer dependent on the network management, and the service provider can quickly open the customer service through the android system-based APP software provided by the equipment manufacturer.
- the service provider can completely ignore the difference between the underlying devices and configure the service in the cloud.
- FIG. 1 is a flow chart of data processing of an L2VPN UNI--->NNI in an embodiment of the present invention.
- FIG. 2 is a flow chart of data processing of an L2VPN NNI---> UNI in the embodiment of the present invention.
- the invention is based on Marvell's programmable NP (Network Processor) chip to realize virtual private line service, and the forwarding flow table design fully complies with the relevant provisions in the ONF OPEN FLOW protocol 1.4.0.
- Ing_Port_Tbl Inbound port table, this entry is based on Np (Network Processor, Network processor) physical port, each Np physical port has an inbound port table;
- Np Network Processor, Network processor
- My_Mac_Tbl port Mac table, this table is used to check the packet Mac address
- Table0_Tbl The first-level flow table, which is used to distinguish data packets of different users.
- the match_field (matching field) of the flow table is the receiving port + Vlan + Ethernet type.
- Table1_Tbl a second-level flow table, which is used to match a label of a network-side LSP (Label Switched Path), and a match_field is an LSP label.
- Table 2_Tbl a third-level flow table, which is used to match PW (Pseudo Wire) tags, and match_field is a PW tag;
- Group0_Bucket1_Tbl The Bucket1 table of the first-level group is used to encapsulate the PW label for PW1:1 protection.
- the Bucket2 table of the first-level group is mainly used to encapsulate the standby PW label when PW1:1 protection is applied.
- the Bucket1 table of the second-level group is mainly used to encapsulate the primary LSP label and the Ethernet VLAN (Virtual Local Area Network, DMAC (Destination media access control)).
- VLAN Virtual Local Area Network, DMAC (Destination media access control)
- Group1_Bucket2_Tbl The bucket1 table of the second-level group is mainly used to encapsulate the LSP label, Ethernet VLan, and Dmac when LSP1:1 protection is applied.
- Group2_Bucket1_Tbl The third-level Group table is mainly used to encapsulate the data packet Smac (Source media access control).
- the SDN Layer 2 VPN service is composed of the UNI (User Network Interface)--->NNI (Network Network Interface) direction and the NNI--->UNI direction. The following two directions are used. The processing is explained separately.
- the embodiment of the invention provides an SDN network L2VPN implementation system based on the OPEN_FLOW protocol, which includes an SDN Layer 2 VPN UNI--->NNI service model and an SDN Layer 2 VPN NNI---> UNI service model.
- the embodiment of the invention further provides an implementation method of an SDN network L2VPN based on the OPEN_FLOW protocol, comprising the following steps:
- the SDN Layer 2 VPN UNI--->NNI service model is implemented by a primary flow table and a three-level nested Group table:
- the first level flow table table0 is a TCAM (Ternary Content Addressable Memory) table, which is used to identify user data packets. Since the TCAM table is tri-state, the match_field can be a port. Any combination with the user Vlan, this matching method greatly facilitates the shunting of different user data. When the match field of the user data stream has a corresponding flow entry matching, the corresponding Apply action of table0 will be executed. According to our flow table design, the subsequent business will be transferred to the three-level nested Group table for processing.
- TCAM Binary Content Addressable Memory
- the PW label is encapsulated according to the group type (group type). If there is no PW protection, the PW label is encapsulated according to the bucket action in the group table. After processing, the data stream will enter the second level group for processing.
- the label switching path LSP label is encapsulated according to the bucket action in the group table.
- the data stream enters the third-level group table for processing.
- the processing of the second-level group table is similar to that of the first-level group table. The only difference is that the LSP label is encapsulated, and the processing of LSP 1:1 is also performed in the second-level flow table.
- the third-level group is used for the egress lookup.
- the egress lookup is performed. If there is a configuration related to the link aggregation protection (Lag), the process of the Lag process is transferred to the L2VPN.
- Layer 2 Virtual Private Network, the second layer of virtual private network) UNI to NNI basic processing flow is over.
- the SDN Layer 2 VPN NNI---> UNI service model is implemented by a three-level flow table and a first-level group table:
- the first level flow table table0 is a TCAM table, which is used to identify the packets on the network side.
- the corresponding Apply action of the table0 is executed, and the data flow is performed.
- the second stage flow table table1 is a TCAM table, which is used to identify the packets on the network side.
- the second-level flow table table1 is used to match the network-side LSP label. Because it is a Layer 2 VPN service, the pop-up action in the application action (Ipop, Ipop: Internal popup of the Apply Action) pops up the LSP label on the network side. Then the data stream is transferred to the third-level flow table table2;
- the third-level flow table table2 is used to process the inner PW tag.
- the Apply action of the third-level flow table table2 is executed, when all the third-level flow tables are applied. After the Action is executed, the data flow will be transferred to the Group table.
- the group table determines the export of the data packet. In the group table, there is a related processing of the Ctag (Customer Tag). If the user tag (tag) does not need to be processed, the user packet is directly sent from a specified physical port.
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- Computer Security & Cryptography (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Description
Claims (10)
- 一种基于OPEN_FLOW协议的SDN网络L2VPN实现方法,其特征在于,包括以下步骤:A、软件定义网络SDN二层虚拟专用网络VPN的用户网络接口UNI--->网络-网络接口NNI业务模型由一级流表和三级嵌套的群组表实现:第一级流表用来对用户数据报文进行识别;当用户数据流的匹配域有相应的流条目与之匹配,则第一级流表的相应应用动作被执行;之后的业务转向到三级嵌套的群组表进行处理;在第一级群组表里,根据群组表类型来区分是否有伪线保护,如果没有伪线保护,则根据群组表里的桶动作进行伪线标签的封装,处理完后数据流进入第二级群组表进行处理;在第二级群组表里,根据群组表类型来区分是否有伪线伪线保护,如果没有伪线保护,此时会根据群组表里的桶动作进行标签交换路径LSP标签的封装及LSP1:1的处理,处理完后数据流进入第三级群组表进行处理;在第三级群组表里,进行出口查找;B、SDN二层VPN的NNI--->UNI业务模型由三级流表和一级群组表实现:第一级流表用来识别网络侧的报文,当网络侧的数据流有相应的流条目与之匹配,则第一级流表的相应应用动作被执行,数据流转向第二级流表;第二级流表用来匹配网络侧LSP标签,应用动作中的弹出动作将网络侧LSP标签弹出,再将数据流转向第三级流表;第三级流表用来处理内层伪线标签,当有相应的流条目与内层 伪线标签相匹配,则第三级流表的应用动作被执行,当所有的第三级流表的应用动作执行完后,数据流会转向群组表,群组表决定了数据包的出口。
- 如权利要求1所述的基于OPEN_FLOW协议的SDN网络L2VPN实现方法,其特征在于:所述第一级流表是一张三态内容寻址存储器表。
- 如权利要求1所述的基于OPEN_FLOW协议的SDN网络L2VPN实现方法,其特征在于:所述第一级流表的匹配域为接收端口+Vlan+以太网类型,用于对不同用户数据进行分流处理。
- 如权利要求1所述的基于OPEN_FLOW协议的SDN网络L2VPN实现方法,其特征在于:步骤A中,在第三级群组表里,进行出口查找以后,如果有链路聚合保护的相关配置,则转入链路聚合处理的流程。
- 如权利要求1所述的基于OPEN_FLOW协议的SDN网络L2VPN实现方法,其特征在于:步骤B中,所述群组表里有用户标签的相关处理,如果用户标签不需要处理,用户报文直接从一个指定的物理口发送去。
- 一种基于OPEN_FLOW协议的SDN网络L2VPN实现系统,其特征在于:该系统包括软件定义网络SDN二层虚拟专用网络VPN的用户网络接口UNI--->网络-网络接口NNI业务模型和SDN二层VPN NNI--->UNI业务模型,SDN二层VPN的UNI--->NNI业务模型由一级流表和三级嵌套的群组表实现:第一级流表用来对用户数据报文进行识别;当用户数据流的匹配域有相应的流条目与之匹配,则第一级流表的相应应用动作被执行; 之后的业务转向到三级嵌套的群组表进行处理;在第一级群组表里,根据群组表类型来区分是否有伪线保护,如果没有伪线保护,则根据群组表里的桶动作进行伪线标签的封装,处理完后数据流进入第二级群组表进行处理;在第二级群组表里,根据群组表类型来区分是否有伪线伪线保护,如果没有伪线保护,此时会根据群组表里的桶动作进行标签交换路径LSP标签的封装及LSP1:1的处理,处理完后数据流进入第三级群组表进行处理;在第三级群组表里,进行出口查找;SDN二层VPN的NNI--->UNI业务模型由三级流表和一级群组表实现:第一级流表用来识别网络侧的报文,当网络侧的数据流有相应的流条目与之匹配,则第一级流表的相应应用动作被执行,数据流转向第二级流表;第二级流表用来匹配网络侧LSP标签,应用动作中的弹出动作将网络侧LSP标签弹出,再将数据流转向第三级流表;第三级流表用来处理内层伪线标签,当有相应的流条目与内层伪线标签相匹配,则第三级流表的应用动作被执行,当所有的第三级流表的应用动作执行完后,数据流会转向群组表,群组表决定了数据包的出口。
- 如权利要求6所述的基于OPEN_FLOW协议的SDN网络L2VPN实现系统,其特征在于:所述第一级流表是一张三态内容寻址存储器表。
- 如权利要求6所述的基于OPEN_FLOW协议的SDN网络L2VPN实现系统,其特征在于:所述第一级流表的匹配域为接收端 口+Vlan+以太网类型,用于对不同用户数据进行分流处理。
- 如权利要求6所述的基于OPEN_FLOW协议的SDN网络L2VPN实现系统,其特征在于:所述SDN二层VPN的UNI--->NNI业务模型的实现过程中,在第三级群组表里,进行出口查找以后,如果有链路聚合保护的相关配置,则转入链路聚合处理的流程。
- 如权利要求6所述的基于OPEN_FLOW协议的SDN网络L2VPN实现系统,其特征在于:所述SDN二层VPN的NNI--->UNI业务模型的实现过程中,所述群组表里有用户标签的相关处理,如果用户标签不需要处理,用户报文直接从一个指定的物理口发送去。
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| SG11201804250YA SG11201804250YA (en) | 2016-04-19 | 2016-10-21 | Openflow protocol-based sdn l2vpn implementation method and system |
| MYPI2018701855A MY198118A (en) | 2016-04-19 | 2016-10-21 | Openflow protocol-based sdn l2vpn implementation method and system |
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| CN201610244447.2A CN105915428B (zh) | 2016-04-19 | 2016-04-19 | 基于open_flow协议的sdn网络l2vpn实现方法及系统 |
| CN201610244447.2 | 2016-04-19 |
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| CN (1) | CN105915428B (zh) |
| MY (1) | MY198118A (zh) |
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| WO (1) | WO2017181637A1 (zh) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374648A (zh) * | 2020-10-14 | 2022-04-19 | 芯启源(南京)半导体科技有限公司 | 一种np芯片结合tcam实现智能网卡的方法 |
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| CN105915428B (zh) * | 2016-04-19 | 2018-09-18 | 烽火通信科技股份有限公司 | 基于open_flow协议的sdn网络l2vpn实现方法及系统 |
| CN109788041B (zh) * | 2017-12-29 | 2020-07-28 | 中国联合网络通信有限公司广东省分公司 | 一种基于utn网络的sdn云网一体化系统 |
| CN108965090B (zh) * | 2018-07-12 | 2020-12-22 | 中国联合网络通信集团有限公司 | 一种vpn网络用户路由数的控制方法及sdn控制器 |
| CN112153010B (zh) * | 2020-08-31 | 2023-01-20 | 北京全路通信信号研究设计院集团有限公司 | 一种网络安全靶场系统及其运行方法 |
| CN115499272B (zh) * | 2022-07-29 | 2023-05-30 | 天翼云科技有限公司 | 基于云间高速的链路切换方法、装置及计算机设备 |
| CN119728496B (zh) * | 2024-12-02 | 2026-04-21 | 天翼云科技有限公司 | 一种网络流量处理方法及电子设备 |
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-
2016
- 2016-04-19 CN CN201610244447.2A patent/CN105915428B/zh active Active
- 2016-10-21 WO PCT/CN2016/102798 patent/WO2017181637A1/zh not_active Ceased
- 2016-10-21 SG SG11201804250YA patent/SG11201804250YA/en unknown
- 2016-10-21 MY MYPI2018701855A patent/MY198118A/en unknown
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| CN105052083A (zh) * | 2013-03-15 | 2015-11-11 | 思科技术公司 | 用于网络的可编程管理引擎 |
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| CN114374648A (zh) * | 2020-10-14 | 2022-04-19 | 芯启源(南京)半导体科技有限公司 | 一种np芯片结合tcam实现智能网卡的方法 |
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| Publication number | Publication date |
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| CN105915428A (zh) | 2016-08-31 |
| CN105915428B (zh) | 2018-09-18 |
| MY198118A (en) | 2023-08-04 |
| SG11201804250YA (en) | 2018-06-28 |
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