CN101808030A - Logical network construction method based on virtual routers - Google Patents
Logical network construction method based on virtual routers Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 51
- 238000013507 mapping Methods 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 claims description 7
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Abstract
The invention discloses a logical network construction method based on virtual routers, and the method comprises the steps of determining the virtual routers, interconnecting among the virtual routers, maintaining the interconnection route among the virtual routers, constructing a virtual network, dynamically maintaining the virtual network and selecting the route based on the virtual routers. Compared with a traditional virtual network construction technology, the method is a novel logical network construction manner with good expansibility, controllable network structure scale and high routing efficiency, thus improving the service quality of the network effectively.
Description
Technical field
The present invention relates to by one group of root server (Root Server), one group of flexible network Configuration Agent (Flexible Network Configure Broker, FNCB) and the integrated load-carrying net formed of a series of router (be divided into district and territory), specially refer to and on physical network, make up the method that to carry logical network.
Background technology
Integrated load-carrying net is made up of one group of root server, one group of flexible network Configuration Agent and a series of router.Integrated load-carrying net is based on reconfigurable router, root server has the topology information of physics bearer network the whole network, root server is according to requirements such as the source of user's construction logic bearer network, remittance, bandwidth, network types, adopt the selected physical node of logic net mapping method to generate dummy node, come the construction logic bearer network.In order to accelerate the speed of construction logic bearer network, each root server all has the router topology resource information of the overall situation.In order to guarantee maximized being utilized of physics net resource energy, and the logic net that guarantees the user makes up demand and can be met, and root server need adopt a kind of net of logic efficiently mapping method to select physical node in the network as the dummy node of logical bearers net.Behind the selected dummy node, how virtual node generates the routing table of dummy node, and safeguards the dummy node route, is unusual important problem concerning the structure of integrated load-carrying net.
In order to adapt at the online construction logic bearer network of the physical carrier of different scales, architecture adopts the model of distributed layer management.In this architecture, (Router Node RN) forms a territory (domain) to a plurality of routing nodes, and a district (region) is formed in a plurality of territories, and the whole network is made up of a plurality of districts.A flexible network Configuration Agent is responsible for the structure of the logical bearers net in the territory, the structure of root server cross-domain logical bearers net in being responsible for distinguishing, and the structure of transregional logical bearers net is responsible for coordinating to finish by the associated root server.
From the angle of layering, model is divided into three layers, and all routing nodes are formed the physics bearing bed, and the flexible network Configuration Agent is formed the territory management level, and all root servers constitute the whole network management level.Logical bearers net configuration order between the territory that territory management level reception the whole network management level send, and pass to the physical carrier layer, by the structure of physical carrier layer completion logic bearer network.For the configuration of logical bearers net in the territory, directly after the processing configuration information is passed to the physical carrier layer by the territory management level.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of method that makes up user oriented logical bearers network in physical network is provided, this method efficient height, flexibility is good, realizes easy.
The objective of the invention is to be achieved through the following technical solutions: a kind of logical network construction method based on virtual router, this method comprises definite process of virtual router, interconnected process between the virtual router, interconnected route maintenance procedure and based on the routing procedure of virtual router between the virtual router.
The invention has the beneficial effects as follows: the present invention proposes a kind of method based on virtual router construction logic network.Because root server comes the mapping physical node according to the overall topology information of physical carrier net and user's real needs,, can optimization use physical network resource again so the logical bearers net that constructs can be met consumers' demand.
Description of drawings
Fig. 1 is the network topology structure schematic diagram;
Fig. 2 is a virtual router deterministic process flow chart;
Fig. 3 is an interconnected process flow diagram between the virtual router;
Fig. 4 is the interconnected route maintenance procedure flow chart of virtual router.
Embodiment
Describe the present invention below with reference to the accompanying drawings in detail, it is more obvious that purpose of the present invention and effect will become.
A kind of logical network construction method based on virtual router comprises definite process of virtual router, the interconnected process between the virtual router, and interconnected route maintenance procedure between the virtual router is based on the routing procedure of virtual router.Definite process of described virtual router, the interconnected process between the virtual router, interconnected route maintenance procedure between the virtual router realizes with following concrete steps based on the routing procedure of virtual router.
One, definite process of virtual router may further comprise the steps:
1) the property line of reasoning in the initial networking is all linked to each other with management server by node, and the property line of reasoning all has the network unique identifier by node, and each node type all is made as " start node ";
2) all physical nodes send message RNA (comprising type of message, node ID, node port ID, node port IP) to neighbours' physical node;
3) physical node receives that the message RNA of neighbours' physical node (comprises type of message, node ID, node port ID, node port IP), then the information of neighbours' physical node is added in neighbours' physical node information table (comprising neighbor node ID, neighbor node port id, neighbor node Port IP);
4) all physical nodes (comprise type of message to management server transmission message RPN, physical node message (node ID, node port ID, node port IP), in abutting connection with physics node messages (neighbor node ID, the neighbor node port id, the neighbor node Port IP)), after management server obtains the message RPN of all physical nodes, the physics net topology message that promptly obtains the overall situation (comprises physical node information (comprising node ID, node port ID, node port IP), physical link information (link ID, link total bandwidth Totalbandwidth, link available bandwidth Freebandwidth, link time-delay Delay), supported protocol type Protocol), the structure and the service of management server managing virtual net;
5) management server (comprises abutment points ID according to logic net structure demand, agreement Protocol, bandwidth B andwidth, time-delay Delay, traffic performance QoStype, beginning and ending time UpTime and DownTime, the source IP address scope, purpose IP scope), management server adopts logic net mapping method, the physics net topology information of the overall situation of storing in conjunction with management server is chosen some definite nodes that physics routing nodes that virtual net makes up demand are defined as the virtual net mapping that satisfy, and their type is made as " determining node ";
6) in the physics routing node of determining, distribute buffer memory, bandwidth, agreement, virtual net ID, virtual dissolving satisfied the routing node that the logic net makes up demand, and their type is made as " dummy node ";
Two, the interconnected process between the virtual router may further comprise the steps:
1) management server in conjunction with the physics net topology information of the overall situation of storing on the management server, is determined the routing table (comprise virtual net ID, virtual net path number PathID transmits port id) of each virtual routing node according to the mapping result of calculating;
2) management server (comprises type of message in abutting connection with dummy node table and routing table by message RNR with each virtual routing node, in abutting connection with the dummy node table, routing table) issues the corresponding virtual node, start the timer (time of timer is determined according to concrete network load condition) of a correspondence simultaneously;
3) dummy node receives that corresponding RNR (comprises type of message, in abutting connection with the dummy node table, routing table) will safeguard this logical network routing table after, and each dummy node only provides route service for this logical network, when dummy node is received corresponding RNR, confirm successful information RSS (comprising type of message and the successful flag information of expression) to one of management server feedback;
4) after server manager is received the RSS of dummy node, promptly stop the pairing timer of this dummy node;
5) if management server when certain timer stops, also confiscate the information RSS of affirmation success of corresponding dummy node, then server (comprises type of message to corresponding virtual node transmission message RNR again, in abutting connection with the dummy node table, routing table), start the pairing timer of this dummy node simultaneously.After the corresponding virtual node is received RNR, carry out 3) and 4) process;
6) repeat 5) process, receive up to management server till the information RSS of affirmation success of all dummy nodes.So far, all virtual routing node in abutting connection with dummy node table and routing table configuration successful all.
Three, the interconnected route maintenance procedure of virtual router may further comprise the steps:
1) dummy node is an interval with 30s, and periodic virtual routing node adjacent in same logical network sends the hello bag, simultaneously counter failCount (counter) is initialized as 0.Receive acknowledge message of hello bag back answer in abutting connection with dummy node;
2) if dummy node is newly once sending the answer of also not receiving neighbours' dummy node before the hello bag, counter failCount (counter) is added 1, if failCount reaches 6, illustrate and surpassed the affirmation information that 180s does not also receive neighbours' dummy node, think that then this neighbours' dummy node is unreachable, and stop to send the Hello bag to this neighbours' dummy node;
3) unreachable if dummy node detects in abutting connection with dummy node, then this dummy node just sends the message (content of RFA comprises type of message, and virtual net ID is this dummy node ID, unreachable in abutting connection with dummy node ID) of RFA to management server;
4) management server receives that (content of RFA comprises type of message to message RFA, virtual net ID, this dummy node ID, unreachable in abutting connection with dummy node ID) after, all dummy nodes of the pairing virtual net of virtual net ID send message RDE (content of RDE comprises type of message and virtual net ID) in RFA message;
5) after dummy node was received RDE (content of RDE comprises type of message and virtual net ID), physical node was regained the buffer memory of distributing to this dummy node, bandwidth;
6) management server redefines dummy node and the interconnected process of finishing dummy node according to the user's request of this logic net.
Four, the routing procedure based on virtual router may further comprise the steps:
1) each dummy node obtains to arrive the routing iinformation of other dummy node by the interconnected process of dummy node;
When 2) the TCP/IP packet is through the physics routing node, the physics routing node finds the forwarding port id according to virtual net ID and virtual net path number PathID then according to the source IP of packet and the virtual net ID and the virtual net path number PathID of this packet of the definite transmission of purpose IP in the routing table of the pairing dummy node of virtual net ID;
3) physical router forwards packet from the port of finding.
Claims (5)
1. logical network construction method based on virtual router, it is characterized in that, this method comprises definite process of virtual router, the interconnected process between the virtual router, interconnected route maintenance procedure and based on the routing procedure of virtual router between the virtual router.
2. according to right 1 described network establishing method, it is characterized in that definite process of described virtual router may further comprise the steps:
1) all physical nodes in the initial network all link to each other with management server, the structure and the service of management server managing virtual net, and all routing nodes all have the networking unique identifier, and each node type all is made as " start node ".
2) each physical node sends broadcast RBC (type of message, physical node ID, port id, Port IP) to the adjacency physical node, in abutting connection with writing down after physical node is received broadcast RBC this physical node information is added in the physics node table.Each physical node sends to management server and comprises the physics nodal information and in abutting connection with the message RPN (comprise type of message, physical node information is in abutting connection with the physics nodal information) of physics nodal information.After management server is received the message RPN (comprise type of message, physical node information is in abutting connection with the physics nodal information) of each physical node, promptly obtain the physics net topology information of the overall situation.
3) make up demand according to the logic net and (comprise abutment points ID, agreement Protocol, bandwidth B andwidth, time-delay Delay, traffic performance QoStype, beginning and ending time UpTime and DownTime, the source IP address scope, purpose IP scope), management server adopts logic net mapping method to choose definite node that some physical nodes that satisfy virtual net structure demand are defined as the virtual net mapping, and their type is made as " determining node ".
4) in the routing node of determining, distribute buffer memory, bandwidth, agreement, virtual net ID, virtual dissolving satisfied the routing node that the logic net makes up demand, and their type is made as " dummy node ".
3. according to right 1 described network establishing method, it is characterized in that the interconnected process between the described virtual router may further comprise the steps:
1) management server is according to the mapping result of calculating, determine (comprising of each dummy node in abutting connection with dummy node ID in abutting connection with the dummy node table, in abutting connection with the dummy node Port IP) and the routing table of dummy node (comprise virtual net ID, virtual net path number PathID transmits port id).
2) management server (comprises type of message with each dummy node in abutting connection with dummy node table information and routing table message RNR, dummy node in abutting connection with dummy node table and dummy node routing table) issue the corresponding virtual node, start the timer (time of timer is determined according to concrete network load condition) of a correspondence simultaneously.
3) dummy node receives that the RNR of this dummy node correspondence (comprises type of message, dummy node in abutting connection with dummy node table and dummy node routing table) after will safeguard that this dummy node is in abutting connection with dummy node table and this logical network routing table, and each dummy node only provides route service for this logical network, when dummy node is received its corresponding RI, confirm successful message RSS (comprising information type and the successful sign of expression) to one of management server feedback.
4) after server manager is received the RSS of dummy node, promptly stop the pairing timer of this dummy node.
5) if management server when certain timer stops, also confiscate the message RSS of affirmation success of corresponding dummy node, then server (comprises type of message to corresponding virtual node transmission message RNR again, dummy node in abutting connection with dummy node table and dummy node routing table), start the pairing timer of this dummy node simultaneously.The corresponding virtual node carries out 3 after receiving routing table message RNR (comprise type of message, dummy node in abutting connection with dummy node table and dummy node routing table)) and 4) process.
6) repeat 5) process, receive up to management server till the message RSS of affirmation success of all dummy nodes.
4. according to right 1 described network establishing method, it is characterized in that the interconnected route maintenance procedure of described virtual router may further comprise the steps:
1) dummy node periodically in same logical network adjacent virtual routing node send the validity that a definite routing iinformation is guaranteed route.
2) unreachable if dummy node detects in abutting connection with dummy node, then this interlink node just sends the message (content of RF comprises type of message, and virtual net ID is this dummy node ID, unreachable in abutting connection with dummy node ID) of RF to management server.
3) after management server was received RFA, all dummy nodes in RFA message in the pairing virtual net of virtual net ID sent message RDE (comprising type of message and virtual net ID among the RERR).
4) after dummy node was received message RDE (comprising type of message and virtual net ID among the RERR), physical node was regained the buffer memory of distributing to this dummy node, bandwidth.
5) management server redefines dummy node and the interconnected process of finishing dummy node according to the user's request of this logic net.
5. according to right 1 described network establishing method, it is characterized in that may further comprise the steps based on the routing procedure of virtual router:
1) each dummy node obtains to arrive the routing iinformation of other dummy node by the interconnected process of dummy node.
When 2) the TCP/IP packet is through the physics routing node, the physics routing node finds the forwarding port id according to virtual net ID and virtual net path number PathID then according to the source IP of packet and the virtual net ID and the virtual net path number PathID of this packet of the definite transmission of purpose IP in the routing table of the pairing dummy node of virtual net ID.
3) physical router forwards packet from the port of finding.
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Cited By (18)
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| CN102355397A (en) * | 2011-10-31 | 2012-02-15 | 福州大学 | Distributed virtual network building method based on pheromone diffusion |
| CN102694732A (en) * | 2012-05-31 | 2012-09-26 | 中国科学院计算技术研究所 | Method and system for constructing virtual network based on local virtualization |
| CN103516754A (en) * | 2012-06-27 | 2014-01-15 | 中兴通讯股份有限公司 | Method of migrating physical network to virtual network and apparatus thereof |
| CN104320323A (en) * | 2014-11-10 | 2015-01-28 | 浪潮电子信息产业股份有限公司 | Network node virtualization method |
| CN106576075A (en) * | 2014-03-27 | 2017-04-19 | Nicira股份有限公司 | Ingress ecmp in virtual distributed routing environment |
| CN106961360A (en) * | 2017-05-22 | 2017-07-18 | 浙江工商大学 | A kind of virtual net construction and optimization method |
| CN107027134A (en) * | 2016-02-01 | 2017-08-08 | 上海无线通信研究中心 | A kind of user-defined radio communication network side method and system |
| WO2017162030A1 (en) * | 2016-03-22 | 2017-09-28 | 中兴通讯股份有限公司 | Method and apparatus for generating virtual network |
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| CN108173777A (en) * | 2017-12-29 | 2018-06-15 | 杭州电子科技大学 | A kind of two-dimentional resource fragmentation measure of virtual net mapping based on SDN |
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| CN102355397B (en) * | 2011-10-31 | 2014-08-27 | 福州大学 | Distributed virtual network building method based on pheromone diffusion |
| CN102355397A (en) * | 2011-10-31 | 2012-02-15 | 福州大学 | Distributed virtual network building method based on pheromone diffusion |
| CN102694732A (en) * | 2012-05-31 | 2012-09-26 | 中国科学院计算技术研究所 | Method and system for constructing virtual network based on local virtualization |
| CN102694732B (en) * | 2012-05-31 | 2014-11-12 | 中国科学院计算技术研究所 | Method and system for constructing virtual network based on local virtualization |
| CN103516754A (en) * | 2012-06-27 | 2014-01-15 | 中兴通讯股份有限公司 | Method of migrating physical network to virtual network and apparatus thereof |
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| US10693783B2 (en) | 2015-06-30 | 2020-06-23 | Nicira, Inc. | Intermediate logical interfaces in a virtual distributed router environment |
| US11799775B2 (en) | 2015-06-30 | 2023-10-24 | Nicira, Inc. | Intermediate logical interfaces in a virtual distributed router environment |
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| CN107027134A (en) * | 2016-02-01 | 2017-08-08 | 上海无线通信研究中心 | A kind of user-defined radio communication network side method and system |
| WO2017162030A1 (en) * | 2016-03-22 | 2017-09-28 | 中兴通讯股份有限公司 | Method and apparatus for generating virtual network |
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| US11165689B2 (en) | 2016-08-05 | 2021-11-02 | Huawei Technologies Co., Ltd | Service-based traffic forwarding in virtual networks |
| US10841208B2 (en) | 2016-08-05 | 2020-11-17 | Huawei Technologies Co., Ltd. | Slice/service-based routing in virtual networks |
| US11005750B2 (en) | 2016-08-05 | 2021-05-11 | Huawei Technologies Co., Ltd. | End point to edge node interaction in wireless communication networks |
| US10630576B2 (en) | 2016-08-05 | 2020-04-21 | Huawei Technologies Co., Ltd. | Virtual network routing to dynamic end point locations in support of service-based traffic forwarding |
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| US10608928B2 (en) | 2016-08-05 | 2020-03-31 | Huawei Technologies Co., Ltd. | Service-based traffic forwarding in virtual networks |
| WO2018024254A1 (en) * | 2016-08-05 | 2018-02-08 | Huawei Technologies Co., Ltd. | Virtual network routing to dynamic end point locations in support of service-based traffic forwarding |
| CN106961360A (en) * | 2017-05-22 | 2017-07-18 | 浙江工商大学 | A kind of virtual net construction and optimization method |
| US10511459B2 (en) | 2017-11-14 | 2019-12-17 | Nicira, Inc. | Selection of managed forwarding element for bridge spanning multiple datacenters |
| US11336486B2 (en) | 2017-11-14 | 2022-05-17 | Nicira, Inc. | Selection of managed forwarding element for bridge spanning multiple datacenters |
| CN108173777A (en) * | 2017-12-29 | 2018-06-15 | 杭州电子科技大学 | A kind of two-dimentional resource fragmentation measure of virtual net mapping based on SDN |
| CN108173777B (en) * | 2017-12-29 | 2020-08-04 | 杭州电子科技大学 | SDN-based virtual network mapping two-dimensional resource fragment measurement method |
| CN109697328A (en) * | 2018-12-29 | 2019-04-30 | 昆山航宇华电电子科技有限公司 | The construction method of large-scale virtual Router Simulation system based on network training |
| CN112953823A (en) * | 2021-01-29 | 2021-06-11 | 广州安凯微电子股份有限公司 | Virtual circuit networking method |
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