CN107911316B - Traffic scheduling method and system based on MPLS in SDN technology - Google Patents
Traffic scheduling method and system based on MPLS in SDN technology Download PDFInfo
- Publication number
- CN107911316B CN107911316B CN201711473325.1A CN201711473325A CN107911316B CN 107911316 B CN107911316 B CN 107911316B CN 201711473325 A CN201711473325 A CN 201711473325A CN 107911316 B CN107911316 B CN 107911316B
- Authority
- CN
- China
- Prior art keywords
- sdn
- path
- flow
- mpls
- constraint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/38—Flow based routing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
- H04L47/6275—Queue scheduling characterised by scheduling criteria for service slots or service orders based on priority
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention relates to a flow scheduling method and a flow scheduling system based on MPLS in SDN technology, wherein the method is based on SDN networking technology, an SDN controller senses the whole network topology, acquires the whole network real-time network topology, periodically performs flow load statistics on each link, performs optimization calculation on a flow scheduling path based on a multi-constraint CSPF algorithm, issues a forwarding flow table based on multi-protocol label switching MPLS technology to an SDN switch in an LSP path through an OpenFlow protocol, and performs scheduling optimization on flow.
Description
Technical Field
The invention belongs to the field of network communication, and particularly relates to a flow scheduling method and system based on an MPLS in SDN technology.
Background
With the rapid development of the internet, network traffic driven by various user demand services shows explosive growth, various OTT services based on the internet and cloud computing are developed, and cloud service providers providing infrastructure renting services such as computing, storage, network and the like are started, the traffic flow direction and the change trend of a backbone network of an operator show unpredictability and volatility enhancement characteristics, and the traditional manual traffic scheduling is difficult to adapt to new traffic characteristics. The existing traditional traffic scheduling method is more and more difficult to meet the requirement of network development.
Software Defined Networking (SDN) is a popular technology in recent years, and the main technical idea is to separate a control plane from a forwarding plane, abstract the distributed control of the original traditional Network as a control plane, and use an SDN controller to centrally control the whole Network device, thereby reducing the complexity of the Network, and the Network device is only responsible for simple data forwarding, realizing flexible control of Network traffic, and realizing flexible allocation of Network resources as required.
Multi-Protocol Label Switching (MPLS) is a Protocol between the link layer and the network layer proposed by the Internet Engineering Task Force (IETF). The method is widely applied to local area networks and wide area networks. The main technical idea is to use label (label) for data forwarding. The complex operation of all network layers may in turn simplify the operation of pairing labels and forwarding on the basis of labels. MPLS supports multiple traffic accesses to an MPLS network, and Forwarding Equivalence Classes (FEC) may be defined according to the service traffic of tenants. When data is transmitted in the MPLS network, forwarding is directly performed according to a Label Switched Path (LSP) without matching other complex network layer information.
The OpenFlow protocol is a novel network protocol which is common in SDN networking, and can be used as a channel for information exchange between an SDN controller and an SDN switch and also can be used as an SDN switch data plane forwarding protocol. The OpenFlow protocol fully inherits the architecture concept of the SDN, namely, the network control plane and the data forwarding plane are completely separated. The control plane, namely the controller constructs and issues the flow table to the SDN switch, and the data packet guides the forwarding of the data packet by matching the form of the flow table item execution instruction set, so that the purpose of controlling the network flow is achieved. The OpenFlow protocol instruction supports the operation of the MPLS label, so that the OpenFlow protocol and the MPLS can be perfectly matched for use.
The CSPF algorithm is an open source known algorithm derived from the SPF algorithm, and the basic idea of the algorithm is to calculate an optimal path that satisfies constraints according to bandwidth, coloring, preemption/maintenance priority, explicit path, etc. in a link as constraints.
Current network traffic scheduling is implemented substantially through conventional network protocols such as BPG and the like. Because there is no concept of a control plane, the configuration mode is often to manually add the related strategies. The traffic scheduling cannot be flexibly and automatically performed according to the current traffic, the priority of the traffic cannot be sensed in the scheduling process, and the normal scheduling and optimization of important traffic cannot be guaranteed.
Disclosure of Invention
The technical problem to be solved by the present invention is to solve the above-mentioned defects, and the present invention provides a topology structure, a method and a system for implementing a service chain.
The invention adopts the following technical scheme for solving the technical problems:
the method comprises the steps of obtaining a whole network real-time network topology based on a multi-protocol label switching (MPLS) technology, carrying out flow load statistics on each link periodically, carrying out optimization calculation on a flow scheduling path based on a multi-constraint CSPF (Carrier switching Filter) algorithm, and then dispatching and optimizing the flow by issuing an LSP path of an OpenFlow protocol to an SDN switch in the path.
The method specifically comprises the following steps:
step 1, establishing an SDN switch and an SDN controller cluster, establishing a TCP connection by taking an OpenFlow protocol and an OVSDB protocol as pipelines, deploying an sFlow Server and deploying an sFlow Agent on the SDN switch;
step 2, a flow acquisition and analysis module is used for butting an sFlow Server, and the whole network topological flow load is periodically acquired;
step 3, analyzing the high-load link flow, and performing path optimization on the data packet through a CSPF algorithm;
and 4, the SDN controller issues FlowMod messages on all SDN switches in the path through OpenFlow channels according to the planned path and forwards the FlowMod messages from the specified port to perform flow scheduling.
The contents of the FlowMod are MPLS labels corresponding to the incoming flow in the matching path planning, and the action instruction set is a new MPLS label value.
The step 1 specifically comprises the following steps:
establishing an SDN switch and an SDN controller cluster, wherein the SDN switch is adopted as a data plane, and the SDN controller is adopted as a control plane; after the SDN switch is powered on and the physical link is deployed, TCP connection with an OpenFlow protocol as a channel is established through an ovs-vsctl set controller command, and TCP connection with an OVSDB protocol as a copper strip is established through a ovs-vsctl set controller command.
The step 1 further comprises:
the method comprises the steps that an SDN controller sends a PacketOut message of an LLDP to an SDN switch for link detection, the SDN switch forwards a detection LLDP detection packet from a corresponding port after receiving the PacketOut message, adjacent SDN switches are matched with the LLDP detection packet by matching the Ethernet type to be 0x88cc, and the SDN reports to the controller after being matched with the LLDP detection packet, so that link information is obtained, and therefore the whole network topology is obtained.
The MPLS label comprises a label bit, an Exp bit, an S bit and a TTL bit. Where the tag bit is the tag actual value. The Exp bit is a priority bit that indicates the message priority field from 0 to 7. The S position is the position of the last entered label in the label stack at the bottom of the stack. The TTL bits are lifetime fields used to encode lifetime values.
The flow scheduling system based on the MPLS in SDN technology comprises a control plane and a data plane;
the data plane adopts an SDN switch, the control plane is an SDN controller, and the SDN controller issues a link layer discovery protocol LLDP detection packet to the SDN switch through an OpenFlow protocol so as to acquire a full-network topology;
and the SDN controller acquires the maximum bandwidth of an SDN switch port in a link through an OVSDB protocol.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
the invention can flexibly and automatically schedule the flow according to the current flow in the topological link, and can carry out classified scheduling according to the priority of the flow in the scheduling, thereby realizing path tuning and optimization.
Drawings
Fig. 1 is a schematic view of a network topology of a traffic scheduling method based on MPLS in SDN technology according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating an implementation of a traffic scheduling method based on the MPLS in SDN technology according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a path planning of a traffic scheduling method based on the MPLS in SDN technology according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating an implementation of issuing a LSP path planning flow table in the traffic scheduling method based on the MPLS in SDN technology according to the embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
The traffic scheduling method based on the MPLS in SDN technology provided by the invention comprises the following steps: the method comprises the steps of acquiring the real-time topology of the whole network, realizing forwarding equivalence class based on flow table matching of an OpenFlow protocol, periodically counting flow load, calculating a flow scheduling path based on a multi-constraint CSPF algorithm, and issuing an LSP path based on the OpenFlow protocol.
The SDN controller can acquire topology information of the whole network and real-time flow information of the whole network, and the method is realized as follows:
the network construction in the invention adopts SDN technology networking, the control plane and the data plane are separated, the data plane uses an SDN switch, and an SDN controller is used for centralized control of the control plane.
After an SDN switch in networking is connected with the SDN controller, the SDN controller issues an LLDP detection packet to the SDN switch in a PacketOut mode through an OpenFlow protocol, after the SDN switch receives a PacketOut message, the SDN switch forwards the detection LLDP detection packet from a corresponding port, an adjacent SDN switch matches the LLDP detection packet through matching an Ethernet type of 0x88cc, the detection LLDP detection packet is reported to the SDN controller after being matched with the LLDP detection packet, and link information is obtained, so that the whole network topology is obtained.
The flexible Forwarding Equivalence Class (FEC) realized by flow table matching based on the OpenFlow protocol is realized as follows:
the tenant flow is accessed into the network, and the flow of the tenant flow has a plurality of network flow characteristic values. If the tenant accesses to the networking through the Vlan mode, the network traffic characteristic of the tenant traffic is Vlan id; when a tenant accesses to a networking through a VxLAN mode, the network traffic characteristic of tenant traffic is VNI, and the traffic definition FEC of the tenant can be identified through Vlan id or VNI. And the network opening of the SDN programming level is used, and the FEC can be even defined according to the differentiated service, so that the differentiated tenant service requirements are met.
The flow load is regularly counted, and the following is realized:
ports at two ends of a connected SDN switch in a network group can negotiate the maximum bandwidth. And the SDN controller acquires the maximum bandwidth negotiated by the SDN switch port in the link through an OVSDB protocol. The method comprises the steps of carrying out regular acquisition on the whole network topology flow by deploying sFlow, and sending acquired whole network flow information to an SDN controller. Therefore, the SDN controller can obtain the total bandwidth of the full network topology and the current link load in real time.
The flow scheduling path calculation based on the multi-constraint CSPF algorithm is realized as follows:
and calculating all reachable paths based on the information such as network topology, resource state, flow and the like acquired by the SDN controller. Taking link delay, bandwidth utilization rate, residual bandwidth value, packet loss rate and the like as multi-constraint conditions of the link, and the path selection problem under the multi-constraint is called multi-constraint LSP path planning. And converting the relevant constraint into a weight, and planning an end-to-end label switching path by using a CSPF algorithm with the weight. The principle of path computation is: selecting the path with the minimum cost, selecting the path with the maximum available bandwidth meeting the current requirement, and selecting the shortest path.
The method specifically comprises the following steps of issuing the LSP based on the OpenFlow protocol:
according to the planned optimal path, the SDN controller issues a FlowMod message to an SDN switch in the path through an OpenFlow protocol, the content of the FlowMod is an MPLS label corresponding to the incoming flow in the matched path plan, and the action instruction set is used for setting a new MPLS label value and forwarding the MPLS label value from the appointed port.
In the flow scheduling method based on the MPLS in SDN technology provided by the embodiment of the invention, in a DCI interconnection application scene, the invention is used for scheduling network flow among DCIs, and in a wide area network, the invention is used for scheduling WAN flow; the flow of the whole network can be optimized from the global perspective, the resource utilization rate of the whole network is improved, and the total ownership cost of the network is reduced. The method realizes quick business innovation, provides more flexible, diversified and personalized services, and realizes value innovation.
In this embodiment of the present invention, as shown in fig. 1, a networking schematic diagram of a traffic scheduling method based on an MPLS in SDN technology provided in this embodiment of the present invention includes: a data plane and a control plane. The data plane is a networking topology for networking of the SDN switch, and is in charge of tenant flow transmission through network cables or optical fiber connection. The control plane is an SDN controller cluster formed by SDN controllers and is responsible for controlling and managing SDN switches in the data plane. The SDN switch and the SDN controller cluster are connected through TCP and use an OpenFlow protocol as a channel for data interaction.
In the embodiment of the invention, after the SDN switch is powered on and the physical link is deployed, a TCP connection with an OpenFlow protocol as a channel is established through an ovs-vsctl set controller command, and a TCP connection with an OVSDB protocol as a copper strip is established through a ovs-vsctl set controller command.
In the embodiment of the invention, the SDN controller and the SDN switch mutually send session messages through an OpenFlow protocol and an OVSDB protocol to perform handshake operation. The session using the OpenFlow protocol as a channel needs to perform OpenFlow protocol version negotiation, device information reporting, and device capability reporting. The session using the OVSDB protocol as a channel needs to perform Scheme negotiation and the like.
In the embodiment of the invention, an SDN controller actively sends a PacketOut message of an LLDP to an SDN switch for link detection, the SDN switch forwards a detection LLDP detection packet from a corresponding port after receiving the PacketOut message, adjacent SDN switches are matched with the LLDP detection packet by matching the Ethernet type to be 0x88cc, and the LLDP detection packet is reported to the SDN controller after being matched with the LLDP detection packet, so that the acquisition of link information is completed, and the whole network topology is acquired.
In the embodiment of the invention, an sFlow Server is deployed, sFlow agents are deployed on all SDN switches in a networking topology, an SDN controller flow acquisition and analysis module is started to be in butt joint with the sFlow Server to acquire the whole network flow information, and the whole network link load information is periodically counted.
In the embodiment of the present invention, as shown in fig. 3, the SDN controller path computation module according to the above-mentioned full network link load re-computes a path for traffic on a link with a higher load using a CSPF algorithm with constraints.
In the embodiment of the present invention, as shown in fig. 4, an SDN controller issues FlowMod messages through OpenFlow channels on all SDN switches in a path according to a planned path, where the contents of the FlowMod are MPLS labels corresponding to ingress flows in a matched path plan, and an action instruction set is to set a new MPLS label value and forward the new MPLS label value from a specified port.
It should be noted that the above described method and system embodiments are only illustrative, wherein the SDN controller cluster may use a single SDN controller to perform simulation experiments, and the network of the control plane may be deployed in-band or may be deployed separately. The purpose of the embodiment scheme can be realized according to the actual need of single SDN controller or SDN controller cluster and control plane in-band deployment or individual deployment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art can clearly understand that the resources related to the present invention may be in a virtualized form or in a physical form. However, more often than not, a virtualized software program implementation is a preferred implementation for the present invention. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a readable storage medium, such as a floppy disk, a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk of a computer, and includes instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
As described above, the traffic scheduling method of MPLS in SDN and the embodiment of the present invention are described in detail, and a person skilled in the art may change the specific implementation and the application scope according to the idea of the embodiment of the present invention, so the content of the present specification should not be construed as limiting the present invention.
Claims (5)
1. The flow scheduling method based on the MPLS in SDN technology is characterized in that the method is based on the SDN networking technology, an SDN controller senses the whole network topology, the whole network real-time network topology is obtained, flow load statistics is carried out on each link periodically, optimization calculation is carried out on a flow scheduling path based on a multi-constraint CSPF algorithm, then a flow table based on label matching and label switching of the multi-protocol label switching MPLS technology is issued to an SDN switch in an LSP path through an OpenFlow protocol, and scheduling optimization is carried out on the flow;
the method specifically comprises the following steps:
step 1, establishing an SDN switch and an SDN controller cluster, establishing a TCP connection by taking an OpenFlow protocol and an OVSDB protocol as pipelines, deploying an sFlow Server and deploying an sFlow Agent on the SDN switch; the step 1 specifically comprises the following steps:
establishing an SDN switch and an SDN controller cluster, wherein the SDN switch is adopted as a data plane, and the SDN controller is adopted as a control plane; after the SDN switch is powered on and the physical link is deployed, establishing a TCP connection with an OpenFlow protocol as a channel through an ovs-vsctl set controller command, and establishing a TCP connection with an OVSDB protocol as a channel through a ovs-vsctl set controller command;
step 2, a flow acquisition and analysis module is used for butting an sFlow Server, and the whole network topological flow load is periodically acquired;
step 3, analyzing the high-load link flow, and performing path optimization on the data packet through a CSPF algorithm;
step 4, the SDN controller issues FlowMod messages on all SDN switches in the path through OpenFlow channels according to the planned path and forwards the FlowMod messages from a specified port to perform flow scheduling;
the flow scheduling path is optimized and calculated based on a multi-constraint CSPF algorithm, and the following is realized:
calculating all reachable paths based on network topology, resource states and flow information acquired by the SDN controller; taking link delay, bandwidth utilization rate, residual bandwidth value and packet loss rate as multi-constraint conditions of the link, and calling the path selection problem under the multi-constraint as multi-constraint LSP path planning; converting the constraint into a weight, and planning an end-to-end label switching path by using a CSPF algorithm with the weight; the principle of path computation is: selecting the path with the minimum cost, selecting the path with the maximum available bandwidth meeting the current requirement, and selecting the shortest path.
2. The MPLS in SDN technology-based traffic scheduling method of claim 1, wherein the FlowMod includes an MPLS label corresponding to an ingress traffic in a matching path plan, and the action instruction set sets a new MPLS label value.
3. The MPLS in SDN technology-based traffic scheduling method according to claim 1, wherein the step 1 further comprises:
the method comprises the steps that an SDN controller sends a PacketOut message of an LLDP to an SDN switch for link detection, the SDN switch forwards a detection LLDP detection packet from a corresponding port after receiving the PacketOut message, adjacent SDN switches are matched with the LLDP detection packet by matching the Ethernet type to be 0x88cc, and the SDN reports to the controller after being matched with the LLDP detection packet, so that link information is obtained, and therefore the whole network topology is obtained.
4. The MPLS in SDN technology based traffic scheduling method of claim 2, wherein the MPLS label comprises a label bit, an Exp bit, an S bit, a TTL bit;
wherein the tag bit is the tag actual value;
the Exp bit is a priority bit and represents a message priority field from 0 to 7;
the S position is the position of a label entering the last in the label stack at the bottom of the stack;
the TTL bits are lifetime fields used to encode lifetime values.
5. The traffic scheduling system based on the MPLS in SDN technology is characterized by comprising a control plane and a data plane;
the data plane adopts an SDN switch, the control plane is an SDN controller, and the SDN controller issues a link layer discovery protocol LLDP detection packet to the SDN switch through an OpenFlow protocol so as to acquire a full-network topology;
an SDN controller in the control plane performs optimization calculation on a flow scheduling path based on a multi-constraint CSPF algorithm, and then issues a forwarding flow table based on multi-protocol label switching (MPLS) technology and label matching and label switching to an SDN switch in an LSP path through an OpenFlow protocol, so as to perform scheduling optimization on the flow;
the SDN controller acquires the maximum bandwidth of an SDN switch port in a link through an OVSDB protocol;
an SDN controller in the control plane calculates a traffic scheduling path based on a multi-constraint CSPF algorithm:
the flow scheduling system comprises a path calculation module, wherein the path calculation module is used for calculating all reachable paths on the basis of network topology, resource states and flow information acquired by an SDN controller;
the system also comprises a path planning module, wherein the path planning module is used for taking the link delay, the bandwidth utilization rate, the residual bandwidth value and the packet loss rate as multi-constraint conditions of the link, calling the path selection problem under the multi-constraint as multi-constraint LSP path planning, converting the related constraint into a weight, and planning an end-to-end label switching path by using a CSPF algorithm with the weight; the principle of path computation is: selecting the path with the minimum cost, selecting the path with the maximum available bandwidth meeting the current requirement, and selecting the shortest path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711473325.1A CN107911316B (en) | 2017-12-29 | 2017-12-29 | Traffic scheduling method and system based on MPLS in SDN technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711473325.1A CN107911316B (en) | 2017-12-29 | 2017-12-29 | Traffic scheduling method and system based on MPLS in SDN technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107911316A CN107911316A (en) | 2018-04-13 |
| CN107911316B true CN107911316B (en) | 2021-12-10 |
Family
ID=61871928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711473325.1A Active CN107911316B (en) | 2017-12-29 | 2017-12-29 | Traffic scheduling method and system based on MPLS in SDN technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107911316B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108965025A (en) * | 2018-08-02 | 2018-12-07 | 郑州云海信息技术有限公司 | The management method and device of flow in cloud computing system |
| CN110830373B (en) * | 2018-08-14 | 2022-02-11 | 上海层峰网络科技有限公司 | Method and device for realizing QOS service quality differentiation of service in SDN network |
| CN109510773A (en) * | 2018-11-07 | 2019-03-22 | 北京全路通信信号研究设计院集团有限公司 | Railway data network flow optimization system and method |
| CN112445569B (en) * | 2019-09-02 | 2023-01-17 | 阿里巴巴集团控股有限公司 | Deployment method, device, electronic equipment and storage medium |
| CN111130928B (en) * | 2019-12-10 | 2022-12-23 | 网络通信与安全紫金山实验室 | Network measurement method based on in-band detection in wide area network |
| CN112039774B (en) * | 2020-07-27 | 2022-01-07 | 深圳市风云实业有限公司 | Tunnel and SR combined network flow adjusting and optimizing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595647A (en) * | 2013-11-27 | 2014-02-19 | 北京邮电大学 | OpenFlow-based downlink signaling processing method for SDN (Software Defined Network) virtualization platform |
| CN106101163A (en) * | 2016-08-29 | 2016-11-09 | 北京工业大学 | Network architecture safety monitoring system based on OpenFlow |
| CN106559330A (en) * | 2016-01-22 | 2017-04-05 | 国网智能电网研究院 | A kind of dynamic path planning method based on SDN |
| CN106789658A (en) * | 2016-12-29 | 2017-05-31 | 南京邮电大学 | Satellite MPLS network flow equalization method based on SDN controllers |
| CN107204867A (en) * | 2016-03-18 | 2017-09-26 | 中兴通讯股份有限公司 | A kind of information transferring method, device and system |
-
2017
- 2017-12-29 CN CN201711473325.1A patent/CN107911316B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595647A (en) * | 2013-11-27 | 2014-02-19 | 北京邮电大学 | OpenFlow-based downlink signaling processing method for SDN (Software Defined Network) virtualization platform |
| CN106559330A (en) * | 2016-01-22 | 2017-04-05 | 国网智能电网研究院 | A kind of dynamic path planning method based on SDN |
| CN107204867A (en) * | 2016-03-18 | 2017-09-26 | 中兴通讯股份有限公司 | A kind of information transferring method, device and system |
| CN106101163A (en) * | 2016-08-29 | 2016-11-09 | 北京工业大学 | Network architecture safety monitoring system based on OpenFlow |
| CN106789658A (en) * | 2016-12-29 | 2017-05-31 | 南京邮电大学 | Satellite MPLS network flow equalization method based on SDN controllers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107911316A (en) | 2018-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107911316B (en) | Traffic scheduling method and system based on MPLS in SDN technology | |
| Yang et al. | Software-defined wide area network (SD-WAN): Architecture, advances and opportunities | |
| CN108809857B (en) | SDN-based traffic monitoring and service quality assurance strategy method | |
| KR101333020B1 (en) | Traffic-engineered connection establishment across resource domains for data transport | |
| CN111245644B (en) | Method and system for expanding PCEP (physical layer protocol) protocol to automatically create tunnel in SDN (software defined network) scene | |
| CN106416157B (en) | method for providing elasticity in transport network virtualization | |
| CN105900363A (en) | System and methods for optical lambda flow steering | |
| US20220150159A1 (en) | Control device, switch device and methods | |
| CN115314355A (en) | Electric power communication network architecture system and method based on deterministic network | |
| CN108989148B (en) | Relay multi-path flow distribution method with minimized transmission delay | |
| CN116055394B (en) | Edge routing arrangement system based on vectorized backbone network | |
| US10027557B2 (en) | Method for transmitting data streams through a telecommunication network | |
| Li et al. | SDN based computation offloading for Industrial Internet of Things | |
| CN109474523B (en) | Networking method and system based on SDN | |
| Sedaghat et al. | FRT-SDN: an effective firm real time routing for SDN by early removal of late packets | |
| CN107800637B (en) | Method for determining service transmission path, PCE (path computation element) and SDN (software defined network) | |
| Jiawei et al. | Dynamic Multipath Routing Mechanism for Multimedia Data Flow Scheduling Over Software Defined Networks | |
| CN118018382B (en) | Collaborative management method for distributed deterministic controllers in large-scale wide-area open network | |
| Xu et al. | Coordinated resource allocation with VNFs precedence constraints in inter-datacenter networks over elastic optical infrastructure | |
| CN212413196U (en) | Server applying network real-time flow and flow balancing algorithm architecture system | |
| Donadio et al. | Combining it and network orchestration for green clouds | |
| Li et al. | Distributed Routing Controller for Large-scale Live Video Streams in Real-Time Networks | |
| Zeng | Design and implementation QoS system based on OpenFlow | |
| Wang et al. | Research on PCEP Extension for VLAN-based Traffic Forwarding in cloud network integration | |
| Poularakis et al. | SDN Data Plane Optimization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |