CN110011915A - SDN network framework, flow transmission control method and device based on SDN - Google Patents
SDN network framework, flow transmission control method and device based on SDN Download PDFInfo
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- CN110011915A CN110011915A CN201810008263.5A CN201810008263A CN110011915A CN 110011915 A CN110011915 A CN 110011915A CN 201810008263 A CN201810008263 A CN 201810008263A CN 110011915 A CN110011915 A CN 110011915A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/12—Network monitoring probes
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- 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
- H04L45/02—Topology update or discovery
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- 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
- H04L45/70—Routing based on monitoring results
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/25—Routing or path finding in a switch fabric
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Abstract
The invention discloses a kind of SDN network frameworks, comprising: controller, multiple interchangers interconnected and network probe, each interchanger have interface to connect the network detection equipment；The controller, for creating a detection VLL in each of the links that the interchanger interconnects；The network probe for the SLA information using the detection VLL acquisition link, and gives the SLA information reporting of the link of acquisition to the controller；The controller is also used to select SLA information to carry out path computing according to the type of flow to be transmitted, determines the forward-path for meeting business need, and the forward-path is added to each interchanger being handed down on path in flow table；The interchanger, for carrying out flow forwarding according to the forward-path in the flow table.The invention also discloses a kind of flow transmission control method and device based on SDN.Using the present invention, demand of the different business to network transmission can satisfy.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of SDN network framework further relates to a kind of stream based on SDN
Measure transmission control method and device.
Background technique
A kind of innovation of the SDN (Software Defined Networking, software defined network) relative to traditional network
New network framework, it is intended to realize that the data plane for making the network equipment and control plane are completely separated, compare traditional network
With lot of advantages.Current SDN network is usually following form: having a controller or cluster, is responsible for collecting whole network
The information such as topology, flow, calculate flow forward-path, forwarding-table item be handed down to by interchanger by OpenFlow agreement, hand over
It changes planes and executes forwarding behavior according to list item.Corresponding with controller, the interchanger for executing forwarding behavior is commonly referred to as transponder.Control
Face is removed from the individual equipment of traditional network, has been focused on controller, and forwarding surface is made of transponder.
In traditional network, common Routing Protocol has: IGP (Interior Gateway Protocol, internal gateway
Agreement) and BGP (Border Gateway Protocol, Border Gateway Protocol).Wherein, IGP is in an autonomous intradomain gateway
The agreement of routing iinformation is exchanged between (host and router), main purpose is the routing iinformation in discovery and calculating Autonomous Domain；
BGP is the agreement of the dynamic exchange routing iinformation between Autonomous Domain.IGP Routing Protocol can only be selected according to shortest path expense
One forward-path, BGP can be according to local first grades (local-preference), weight (weight), Multi-Exit Discriminator
(med) etc. attributes come select AS (Autonomous System, autonomous system) internal or AS between path, but these paths
The result of calculating all has limitation, rather than end to end, therefore SDN can not be suitable for.Therefore, meet SDN different
The demand of business data transmission is one of current urgent problem.
Summary of the invention
One aspect of the present invention provides a kind of SDN network framework, to meet the needs of different business is to network transmission.
Another aspect of the present invention also provides a kind of flow transmission control method and device based on SDN, end-to-end to realize
Path computing and selection, achieve the purpose that flexible choice business data transmission path.
For this purpose, the embodiment of the present invention provides the following technical solutions:
A kind of SDN network framework, comprising: controller, multiple interchangers interconnected and network probe, each
Interchanger has interface to connect the network detection equipment；
The controller, for creating a detection VLL in each of the links that the interchanger interconnects；
The network probe, for the SLA information using the detection VLL acquisition link, the SLA information of the link
It includes any of the following or a variety of: time delay, jitter rate, packet loss, and give the SLA information reporting of the link of acquisition to the control
Device processed；
The controller is also used to select SLA information to carry out path computing according to the type of flow to be transmitted, determines and meet
The forward-path of business need, and the forward-path is added to each interchanger being handed down on path in flow table；
The interchanger, for carrying out flow forwarding according to the forward-path in the flow table.
Preferably, the controller is also used to obtain link price information and/or link utilization, and according to the link
Pricing information and/or link utilization and the SLA information of selection carry out path computing.
Preferably, the controller and the interchanger pass through OpenFlow protocol interaction.
Preferably, the network probe control interchanger sends and receives probe messages, and root on the detection VLL
The SLA information of the passed through link of probe messages received is calculated according to the probe messages sent and received.
Preferably, the network probe for the server or virtual machine based on x86 framework or is that dedicated network is surveyed
Try instrument.
A kind of flow transmission control method based on SDN includes multiple interchangers interconnected in the SDN, described
Method includes:
A detection VLL is created in each of the links of interchanger interconnection；
Using it is described detection VLL acquisition link SLA information, the SLA information of the link include any of the following or
It is a variety of: time delay, jitter rate, packet loss；
It selects SLA information to carry out path computing according to the type of flow to be transmitted, determines the forwarding road for meeting business need
Diameter.
Preferably, the SLA information using the detection VLL acquisition link includes:
It controls the interchanger and sends and receives probe messages on the detection VLL；
The SLA information of the passed through link of probe messages received is calculated according to the probe messages sent and received.
Preferably, described to send and receive probe messages on the detection VLL and include:
Probe messages are generated, include ID of trace route path to be detected in the probe messages；
The probe messages are sent to the first node in path to be detected, control each node on the path to be detected
The probe messages are forwarded by the detection VLL, receive the probe messages that the tail node in the path to be detected is sent.
Preferably, the method also includes:
Obtain link price information and/or link utilization；
It is described to include: according to the type of flow to be transmitted selection SLA information progress path computing
Path computing is carried out according to the link price information and/or link utilization and the SLA information of selection.
Preferably, the method also includes:
The forward-path is added to each interchanger being handed down on path in flow table so that the interchanger according to
Forward-path in the flow table carries out flow forwarding.
A kind of flow forwarding controller based on SDN, described device include:
Route creation module is detected, for creating a detection VLL in each of the links that the interchanger interconnects；
First information acquisition module, for the SLA information using the detection VLL acquisition link, the SLA letter of the link
Breath includes any of the following or a variety of: time delay, jitter rate, packet loss；
Path determination module determines and meets for selecting SLA information to carry out path computing according to the type of flow to be transmitted
The forward-path of business need.
Preferably, the information acquisition module includes:
Message process unit, for sending and receiving probe messages on the detection VLL；
Computing unit, for calculating the passed through chain of probe messages received according to the probe messages sent and received
The SLA information on road.
Preferably, the message process unit includes:
Message generation unit includes ID of trace route path to be detected in the probe messages for generating probe messages；
Message control unit, for the probe messages to be sent to the first node in the path to be detected, described in control
Each node on path to be detected forwards the probe messages by the detection VLL, receives the tail in the path to be detected
The probe messages that node is sent.
Preferably, described device further include: the second information acquisition module, second information acquisition module includes: link
Pricing information acquiring unit and/or link utilization computing unit；
The link price information acquisition unit, for obtaining link price information acquisition unit；
The link utilization computing unit, for calculating link utilization；
The path determination module is according to the link price information and/or link utilization and the SLA information of selection
Carry out path computing.
Preferably, described device further include:
Flow table issuance module, for the forward-path to be added to each interchanger being handed down on path in flow table,
So that the interchanger carries out flow forwarding according to the forward-path in the flow table.
Compared with prior art, the invention has the following advantages that
SDN network framework provided in an embodiment of the present invention is existed by the way that network probe is arranged in SDN using controller
The detection VLL that creates in each of the links of interchanger interconnection, acquires the SLA information of link, the SLA information of the link include with
Descend any one or more: time delay, jitter rate, packet loss, and give the SLA information reporting of the link of acquisition to the controller,
So as to which so that controller selects SLA information to carry out path computing according to the type of flow to be transmitted, determination meets business need
Forward-path, realize Path selection end to end, achieve the purpose that flexible choice business data transmission path.Correspondingly, it hands over
It changes planes and carries out flow forwarding according to corresponding forward-path, can preferably meet the transmission demand of different business, guarantee business
Transmission quality.
Detailed description of the invention
Fig. 1 is the schematic diagram of SDN network framework of the embodiment of the present invention；
Fig. 2 is the schematic diagram that business transmission is carried out based on SDN network framework of the embodiment of the present invention；
Fig. 3 is a kind of flow chart of flow transmission control method of the embodiment of the present invention based on SDN；
Fig. 4 is another flow chart of flow transmission control method of the embodiment of the present invention based on SDN；
Fig. 5 is a kind of structural schematic diagram of flow forwarding controller of the embodiment of the present invention based on SDN；
Fig. 6 is another structural schematic diagram of flow forwarding controller of the embodiment of the present invention based on SDN.
Specific embodiment
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention.But the present invention can be with
Much it is different from other way described herein to implement, those skilled in the art can be without prejudice to intension of the present invention the case where
Under do similar popularization, therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in Figure 1, being the schematic diagram of SDN network framework of the embodiment of the present invention.
In this embodiment, the SDN network framework includes: controller, multiple interchangers interconnected and network
Detector, each interchanger have interface to connect the network detection equipment.Wherein, the controller passes through with the interchanger
OpenFlow protocol interaction, i.e. controller control interchanger by OpenFlow, and interchanger then passes through OpenFlow agreement will
Information is fed back into controller, and OpenFlow defines forwarding and edit mode of the network equipment to message.
The workflow of controller and interchanger is as follows in OpenFlow agreement:
Controller tells interchanger by standard set message interface, and when message is come in from which port, this goes to look into
Which flow table is looked for, is matched to after a flow entry, executes the instruction of this flow entry defined, then or directly transfer
It goes or abandons or continue to search next specified flow table (being specified by this flow entry being matched to), then weigh
This multiple process, until message is forwarded away or is dropped.
After message enters interchanger, the specified flow table of lookup is configured to according to interchanger (being based on port), is matched to
Later, corresponding instruction is executed, for example the message is edited, abandons, count, testing the speed, forwarding.
In embodiments of the present invention, the controller creates a detection in each of the links that the interchanger interconnects
VLL (Virtual Leased Line, VLL).Route is monopolized relative to client in proprietary leased line,
VLL allows multiple client's share wires, distinguishes customer data by VC (Virtual Circuit, virtual circuit), is different clients
Designated lane in logic is provided, provides L2VPN (two-layer virtual private network) service for client.
Detection VLL be made of two OpenFlow flow list items, flow table matching condition can be assigned to only detection VLL make
VLAN (Virtual Local Area Network, virtual LAN) or MPLS (Multi-Protocol Label
Switching, multiprotocol label switching) label.Controller generate detection VLL two OpenFlow flow list items, and respectively under
Issue the interchanger of both link ends to be detected.Interchanger receives according to OpenFlow flow list item and network probe is forwarded to generate
Probe messages.
The network probe acquires SLA (Service Level Agreement, the clothes of link using the detection VLL
Be engaged in level protocol) information, the SLA information of the link include it is following any one or more: time delay, jitter rate, packet loss etc.,
And give the SLA information reporting of the link of acquisition to the controller.Specifically, network probe generates probe messages, and controls
Interchanger sends and receives probe messages on the detection VLL, is calculated and is received according to the probe messages sent and received
The SLA information of the passed through link of the probe messages arrived.
Correspondingly, the SLA information preservation for the link that the controller acquires each network probe in the database, and root
Path computing is carried out according to the different factors in the type selection SLA information of the flow to be transmitted of interchanger request, determination meets industry
The forward-path that business requires, and the forward-path is added to each interchanger being handed down on path in flow table.The control
Device processed can carry out shortest path tree end to end according to the SLA factor of selection and calculate, from what is obtained when carrying out path computing
Selection meets the forward-path of business need in path tree, and the forward-path of selection is added in flow table and is handed down on path
Each interchanger.Correspondingly, each interchanger on path carries out flow forwarding according to the forward-path in the flow table.
It should be noted that in an alternative embodiment of the invention, the controller can also further obtain link price letter
Breath and/or link utilization, and carried out according to the link price information and/or link utilization and the SLA information of selection
Path computing.For the link price information, controller can be obtained from operation system；For link utilization, control
Device can recorde and count the use data of each link, and the utilization rate of each link is calculated according to the data.
For the network architecture, illustrate the business transmission process based on the network shown in Fig. 2 below.
As shown in Fig. 2, being deployed with 9 interchangers, i.e. interchanger OFS1 to OFS9, wherein interchanger in the network
OFS1 and interchanger OFS9 is deployed in Service Access point, and controller (not shown) passes through these exchanges of OpenFlow consultative management
Machine, each interchanger have interfacing between network detecting devices.Controller creates one in each of the links that interchanger interconnects
Item detects VLL, such as building a detection VLL between interchanger OFS1 and interchanger OFS3 can net using detection VLL
Network detector detects interchanger OFS1 to the SLA information of interchanger OFS3 link, can also detect interchanger OFS3 to interchanger
The SLA information of OFS1 link.
When interchanger OFS1 there are service traffics to need to forward, flow table is forwarded to controller request flow；Controller according to
The request determines the path for needing to detect, and sends ID of trace route path to be detected to corresponding network probe.Controller can
Think that each forward-path assigns unique identification information, so that network probe carries the mark in the probe messages of generation
Information, to indicate the forward-path that needs detect.
Network probe generates probe messages and, according to the link to be detected, is visiting when network probe generates probe messages
It observes and predicts and carries corresponding ID of trace route path to be detected, such as VLAN or MPLS label on text.In addition to this, probe messages can also carry
Network probe generates the timestamp when probe messages, and SLA information is calculated after receiving for recipient.
The probe messages are sent to the first node in path to be detected by network probe, are controlled on the path to be detected
Each node pass through the detection VLL and forward the probe messages, receive the institute that the tail node in the path to be detected is sent
State probe messages.After each interchanger on the path to be detected receives the probe messages, existed according to VLAN or MPLS label
Reception and forward process are carried out on detection VLL.
In addition, network probe is as needed, the transmission frequency of probe messages can also be specified, is visited by sending and receiving
Text is observed and predicted, understands the connectivity of specified forward-path in time.Further, pass through the sending time of record probe messages, number
Amount etc., and correspondingly record recovery time, the quantity etc. of probe messages, can also determine the time delay of the specified path, packet loss,
The forwarding performances such as jitter rate.
The jitter rate refers to the variation degree of packetization delay, be real-time transmission an important parameter, such as VoIP,
Video etc..When sending the probe messages, transmitting terminal increases a sending time stamp in heading, and receiving in receiving end should
It is same to increase a receiving time stamp when probe messages, the time delay of corresponding link can be calculated according to the two timestamps,
According to the time delay of different probe messages, that is, it can determine the shake of corresponding link, when the size of shake depends on the delay of data packet
Between difference degree, difference degree is bigger, shake it is bigger.The packet loss is therefore named to be conceived, and refers to that lost data packet number accounts for
The ratio of transmitted data group can be calculated according to the probe messages of transmission and the quantity of received probe messages.
Network probe detects to obtain the SLA information of link using probe messages, by the SLA information reporting to control
Device.
In the request that interchanger OFS1 is sent to controller, the type information of flow to be transmitted will also include, correspondingly,
Controller selects the different factors in SLA information to carry out path computing according to the type of the flow to be transmitted, and determination meets industry
The forward-path that business requires, and the forward-path is added to each interchanger being handed down on path in flow table.Than strictly according to the facts
When video flow it is very high to delay requirement, so controller can choose one from OFS1 to OFS9 end to end, link when
Prolong the smallest path of summation.For example, OFS1 → OFS5 → OFS7 → OFS9, the smallest forward-path of chain-circuit time delay summation can be with
For transmitting the real-time traffic having higher requirements to time delay.Controller establishes service traffics VLL between above-mentioned each interchanger, with
Forwarding service flow.
It is as follows that controller carries out flow table configuration to interchanger on the above-mentioned path of selection:
Interchanger OFS1 flow table:
Entry1:match in_port=p1+DIP=real-time video flow actions=MPLS Label:OFS5,
Output:OFS5, DMAC=OFS5
Interchanger OFS5 flow table:
Entry1:match in_port=p1+Label=OFS5actions=MPLS Label:OFS7, output:
OFS7, DMAC=OFS7
Interchanger OFS7 flow table:
Entry1:match in_port=p1+Label=OFS7actions=MPLS Label:OFS9, output:
OFS9, DMAC=OFS9
Interchanger OFS9 flow table:
Entry1:match in_port=p1+Label=OFS9actions=POP MPLS Label:OFS9,
Output:p1
Correspondingly, each interchanger on the path carries out flow forwarding according to the forward-path in the flow table, most
Service traffics are forwarded to interchanger OFS9 at last.Specifically, interchanger OFS1 receives real-time video flow, will according to matching condition
Flow is sent to the port with OFS5 interconnection and encapsulates MPLS (Multi-Protocol Label Switching, multi-protocols mark
Label exchange) label, matched flow issued interchanger OFS7, interchanger according to incoming interface and MPLS label by interchanger OFS5
Matched flow is sent to interchanger OFS9 according to incoming interface and MPLS label by OFS7, interchanger OFS9 according to incoming interface and
Matched flow is issued client device by MPLS label.
Reverse flow transmission process is similar with the above process, that is, when calculating from interchanger OFS9 to the link of interchanger OFS1
Prolong the smallest forward-path, issues flow table, forwarding data.
The SDN network framework of the embodiment of the present invention, is arranged network probe in SDN, mutual in interchanger using controller
The detection VLL created in each of the links of connection acquires the SLA information of link, and by the SLA information reporting of the link of acquisition to institute
Controller is stated, to select SLA according to the type of flow to be transmitted after so that controller is obtained the SLA information of SDN total network links
Information carries out path computing, quickly calculates the forward-path for meeting business need, realizes Path selection end to end, reaches
To the purpose in flexible choice business data transmission path, and business need variation after, can according to the adjustment of business need come
The new route that meets the requirements is calculated, is quickly opened and flexible management to conveniently realize service path.Correspondingly, interchanger is pressed
Flow forwarding is carried out according to corresponding forward-path, can preferably meet the transmission demand of different business, guarantees that business transmits matter
Amount.
After controller obtains the SLA information of SDN total network links, it can quickly calculate one and meet business need
Forward-path, and the new route met the requirements is calculated according to the adjustment of business need.It is quickly open-minded to reach service path
With the purpose of flexible management.
In a particular application, network probe recited above can for based on x86 framework server or virtual machine or
Person is dedicated network tester, without limitation to this present invention.
Correspondingly, the present invention also provides a kind of flow transmission control method based on SDN includes multiple phases in the SDN
The interchanger to connect.
As shown in figure 3, being a kind of flow chart of this method, comprising the following steps:
Step 301, a detection VLL is created in each of the links of interchanger interconnection.
In practical applications, the creation of above-mentioned detection VLL can be completed by the controller in SDN.
Step 302, using the SLA information of the detection VLL acquisition link, the SLA information of the link includes following
It anticipates one or more: time delay, jitter rate, packet loss.
Specifically, it can control the interchanger and send and receive probe messages on the detection VLL, and according to transmission
The SLA information of the passed through link of probe messages received is calculated with the received probe messages.
The probe messages can be generated by network probe, and the network probe can be the clothes based on x86 framework
It is engaged in device or virtual machine or be dedicated network tester.It include ID of trace route path to be detected, network detection in the probe messages
The probe messages are sent to the first node in path to be detected by device, and each node controlled on the path to be detected passes through institute
It states detection VLL and forwards the probe messages, receive the probe messages that the tail node in the path to be detected is sent, network is visited
Survey the SLA letter that the passed through link of probe messages received can be calculated according to the probe messages sent and received for device
It ceases, time delay, jitter rate, the specific calculation of packet loss in the SLA information have been described in detail in front, herein no longer
It repeats.
Certainly, the probe messages can also be generated by the controller, without limitation to this embodiment of the present invention.
Step 303, SLA information is selected to carry out path computing according to the type of flow to be transmitted, determination meets business need
Forward-path.
The calculating and selection in above-mentioned path can be completed by the controller in SDN,
It further, can also be using link price information and/or link utilization as Path selection according to needs are applied
Factor in need of consideration, wherein the link price information can be obtained from operation system by controller, the link utilization
The use data for each link that rate can be recorded and be counted by controller are calculated.
As shown in figure 4, be the flow chart of another embodiment of the flow transmission control method the present invention is based on SDN, including
Following steps:
Step 401, a detection VLL is created in each of the links of interchanger interconnection.
Step 402, using the SLA information of the detection VLL acquisition link, the SLA information of the link includes following
It anticipates one or more: time delay, jitter rate, packet loss.
Step 403, SLA information is selected to carry out path computing according to the type of flow to be transmitted, determination meets business need
Forward-path.
Step 404, the forward-path is added to each interchanger being handed down on path in flow table, so that the friendship
It changes planes and carries out flow forwarding according to the forward-path in the flow table.
Flow transmission control method provided by the invention based on SDN, by being created in each of the links that interchanger interconnects
Detection VLL is built, using the SLA information of the detection VLL acquisition link, when being forwarded Path selection, according to stream to be transmitted
Factor in the type selection SLA information of amount carries out path computing, further can also be by link price information and/or link benefit
It uses rate as routing factor in need of consideration, so as to realize path computing end to end and selection, obtains meeting business and want
The forward-path asked meets the needs of different business is to network transmission.
Correspondingly, the present invention also provides a kind of flow forwarding controller based on SDN, as shown in figure 5, being the device
A kind of structural schematic diagram.
In this embodiment, described device includes:
Route creation module 501 is detected, for creating a detection VLL in each of the links that the interchanger interconnects；
First information acquisition module 502, for acquiring the SLA information of link using the detection VLL, the link
SLA information include it is following any one or more: time delay, jitter rate, packet loss；
Path determination module 503 is determined for selecting SLA information to carry out path computing according to the type of flow to be transmitted
Meet the forward-path of business need.
Above-mentioned first information acquisition module 502 can specifically include message process unit and computing unit, wherein the report
Literary processing unit sends and receives probe messages on the detection VLL for controlling interchanger；The computing unit is used for root
The SLA information of the passed through link of probe messages received is calculated according to the probe messages sent and received.
The message process unit includes: message generation unit and message control unit, in which:
Message generation unit includes ID of trace route path to be detected in the probe messages for generating probe messages；
Message control unit is used to for the probe messages being sent to the first node in the path to be detected, control it is described to
Each node on detective path forwards the probe messages by the detection VLL, receives the periproct in the path to be detected
The probe messages that point is sent.
It should be noted that in practical applications, first information acquisition module 502 can be by the SLA of each link of acquisition
Information is stored into database, and these SLA information are to constantly update variation.Correspondingly, 503 basis of path determination module
SLA information in database carries out path computing and selection.
As shown in fig. 6, being another structural schematic diagram of flow forwarding controller of the embodiment of the present invention based on SDN.
Unlike embodiment illustrated in fig. 5, in this embodiment, described device further include: the second information acquisition module
504, for acquiring link pricing information and/or calculating link utilization.
Second information acquisition module 504 may include: link price information acquisition unit and/or link utilization meter
Calculate unit, in which: the link price information acquisition unit is used to obtain link price information acquisition unit, for example can obtain employment
Business system directly acquires link price information；The link utilization computing unit is for calculating link utilization, for example, can be with
Link utilization is calculated in use data by recording and counting each link.
Correspondingly, in this embodiment, path determination module 503 is needed according to the link price information and/or link
Utilization rate and the SLA information of selection carry out path computing, determine the forward-path for meeting business need.
It should be noted that described device can further comprise: flow table issuance module in Fig. 5 and embodiment illustrated in fig. 6
(not shown), for the forward-path to be added to each interchanger being handed down on path in flow table, so that the exchange
Machine carries out flow forwarding according to the forward-path in the flow table.
In addition, it is necessary to explanation, the apparatus embodiments described above are merely exemplary, wherein described be used as is divided
Module, unit from part description may or may not be physically separated, the component shown as module, unit
It may or may not be physical unit, it can it is in one place, or may be distributed over multiple network equipments
On.Some or all of the modules therein can be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
Flow forwarding controller provided by the invention based on SDN, by being created in each of the links that interchanger interconnects
Detection VLL is built, using the SLA information of the detection VLL acquisition link, when being forwarded Path selection, according to stream to be transmitted
Factor in the type selection SLA information of amount carries out path computing, further can also be by link price information and/or link benefit
It uses rate as routing factor in need of consideration, so as to realize path computing end to end and selection, obtains meeting business and want
The forward-path asked meets the needs of different business is to network transmission.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this field skill
Art personnel without departing from the spirit and scope of the present invention, can make possible variation and modification, therefore guarantor of the invention
Shield range should be subject to the range that the claims in the present invention are defined.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net
Network interface and memory.
Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/or
The forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable medium
Example.
1, computer-readable medium can be by any side including permanent and non-permanent, removable and non-removable media
Method or technology realize that information stores.Information can be computer readable instructions, data structure, the module of program or other numbers
According to.The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory
(SRAM), dynamic random access memory (DRAM), other kinds of random access memory (RAM), read-only memory
(ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory techniques, CD-ROM are read-only
Memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or
Other magnetic storage devices or any other non-transmission medium, can be accessed by a computing device information using storage.According to
Herein defines, and computer-readable medium does not include non-temporary computer readable media (transitory media), such as modulates
Data-signal and carrier wave.
2, it will be understood by those skilled in the art that embodiments herein can provide as the production of method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the application
Form.It can be used moreover, the application can be used in the computer that one or more wherein includes computer usable program code
The computer program product implemented on storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Form.
Claims (15)
1. a kind of SDN network framework characterized by comprising controller, multiple interchangers interconnected and network are visited
Device is surveyed, each interchanger has interface to connect the network detection equipment；
The controller, for creating a detection VLL in each of the links that the interchanger interconnects；
The network probe, for the SLA information using the detection VLL acquisition link, the SLA information of the link includes
Below any one or more: time delay, jitter rate, packet loss, and by the SLA information reporting of the link of acquisition give the control
Device；
The controller is also used to select SLA information to carry out path computing according to the type of flow to be transmitted, and determination meets business
It is required that forward-path, and the forward-path is added to each interchanger being handed down on path in flow table；
The interchanger, for carrying out flow forwarding according to the forward-path in the flow table.
2. SDN network framework according to claim 1, which is characterized in that the controller is also used to obtain link price
Information and/or link utilization, and according to the link price information and/or link utilization and selection SLA information into
Row path computing.
3. SDN network framework according to claim 1, which is characterized in that the controller passes through with the interchanger
OpenFlow protocol interaction.
4. SDN network framework according to claim 1, which is characterized in that the network probe control interchanger is in institute
It states and sends and receives probe messages on detection VLL, and calculate the detection received according to the probe messages sent and received
The SLA information of the passed through link of message.
5. SDN network framework according to any one of claims 1 to 4, which is characterized in that the network probe be based on
The server or virtual machine of x86 framework or be dedicated network tester.
It include multiple interchangers interconnected, feature in the SDN 6. a kind of flow transmission control method based on SDN
It is, which comprises
A detection VLL is created in each of the links of interchanger interconnection；
Using it is described detection VLL acquisition link SLA information, the SLA information of the link include it is following any one or more:
Time delay, jitter rate, packet loss；
It selects SLA information to carry out path computing according to the type of flow to be transmitted, determines the forward-path for meeting business need.
7. the flow transmission control method according to claim 6 based on SDN, which is characterized in that described to utilize the spy
Survey VLL acquisition link SLA information include:
It controls the interchanger and sends and receives probe messages on the detection VLL；
The SLA information of the passed through link of probe messages received is calculated according to the probe messages sent and received.
8. the flow transmission control method according to claim 7 based on SDN, which is characterized in that described in the detection
Probe messages are sent and received on VLL includes:
Probe messages are generated, include ID of trace route path to be detected in the probe messages；
The probe messages are sent to the first node in path to be detected, each node controlled on the path to be detected passes through
The detection VLL forwards the probe messages, receives the probe messages that the tail node in the path to be detected is sent.
9. the flow transmission control method according to claim 6 based on SDN, which is characterized in that the method also includes:
Obtain link price information and/or link utilization；
It is described to include: according to the type of flow to be transmitted selection SLA information progress path computing
Path computing is carried out according to the link price information and/or link utilization and the SLA information of selection.
10. according to the described in any item flow transmission control methods based on SDN of claim 6 to 9, which is characterized in that described
Method further include:
The forward-path is added to each interchanger being handed down on path in flow table, so that the interchanger is according to described
Forward-path in flow table carries out flow forwarding.
11. a kind of flow forwarding controller based on SDN, which is characterized in that described device includes:
Route creation module is detected, for creating a detection VLL in each of the links that the interchanger interconnects；
First information acquisition module, for the SLA information using the detection VLL acquisition link, the SLA packet of the link
Include it is following any one or more: time delay, jitter rate, packet loss；
Path determination module, for selecting SLA information to carry out path computing according to the type of flow to be transmitted, determination meets business
It is required that forward-path.
12. the flow forwarding controller according to claim 11 based on SDN, which is characterized in that the first information
Acquisition module includes:
Message process unit sends and receives probe messages on the detection VLL for controlling the interchanger；
Computing unit, for calculating the passed through link of probe messages received according to the probe messages sent and received
SLA information.
13. the flow forwarding controller according to claim 12 based on SDN, which is characterized in that the Message processing
Unit includes:
Message generation unit includes ID of trace route path to be detected in the probe messages for generating probe messages；
Message control unit, for the probe messages to be sent to the first node in the path to be detected, control is described wait visit
The each node surveyed on path forwards the probe messages by the detection VLL, receives the tail node in the path to be detected
The probe messages sent.
14. the flow forwarding controller according to claim 11 based on SDN, which is characterized in that described device is also wrapped
Include: the second information acquisition module, second information acquisition module include: link price information acquisition unit and/or link benefit
With rate computing unit；
The link price information acquisition unit, for obtaining link price information acquisition unit；
The link utilization computing unit, for calculating link utilization；
The path determination module is carried out according to the link price information and/or link utilization and the SLA information of selection
Path computing.
15. 1 to 14 described in any item flow forwarding controllers based on SDN according to claim 1, which is characterized in that institute
State device further include:
Flow table issuance module, for the forward-path to be added to each interchanger being handed down on path in flow table, so that
The interchanger carries out flow forwarding according to the forward-path in the flow table.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110430094A (en) * | 2019-07-31 | 2019-11-08 | 西安交通大学 | Detection packet generation method based on active probe in a kind of SDN |
| CN111030731A (en) * | 2019-11-25 | 2020-04-17 | 华南理工大学 | Power line carrier communication-based software-defined power Internet of things architecture |
| CN111130928A (en) * | 2019-12-10 | 2020-05-08 | 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 |
| CN112242949A (en) * | 2019-07-18 | 2021-01-19 | 厦门网宿有限公司 | Route distribution method and controller, information routing method and network node equipment |
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| WO2023019669A1 (en) * | 2021-08-19 | 2023-02-23 | 网宿科技股份有限公司 | Cdn quality inspection method and system, server, and storage medium |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102209003A (en) * | 2010-03-29 | 2011-10-05 | 华为技术有限公司 | Link detection method, system and loopback initiation equipment |
| CN102752186A (en) * | 2011-04-20 | 2012-10-24 | 中兴通讯股份有限公司 | Method and system for selecting path, and nodes |
| CN104780095A (en) * | 2015-04-30 | 2015-07-15 | 杭州华三通信技术有限公司 | Path detection method and device in SDN |
| US20150372901A1 (en) * | 2014-06-20 | 2015-12-24 | Verizon Patent And Licensing Inc. | Pseudowire control channel for signaling events |
| CN105471764A (en) * | 2015-11-16 | 2016-04-06 | 中国科学院信息工程研究所 | Method for guaranteeing end-to-end QoS in SDN network |
| CN105847151A (en) * | 2016-05-25 | 2016-08-10 | 安徽大学 | Multi-constrained QoS (Quality of Service) routing strategy designing method for software defined network |
| CN106130767A (en) * | 2016-09-23 | 2016-11-16 | 深圳灵动智网科技有限公司 | The system and method that a kind of service path failure monitoring and fault solve |
| US20170041209A1 (en) * | 2015-08-03 | 2017-02-09 | Telefonaktiebolaget L M Ericsson (Publ) | Method and system for path monitoring in a software-defined networking (sdn) system |
| CN106656847A (en) * | 2017-03-10 | 2017-05-10 | 重庆邮电大学 | Software defined network (SDN) load balancing method with highest network utility |
| CN106911532A (en) * | 2017-02-07 | 2017-06-30 | 佛山易识科技有限公司 | Many tunnel intelligent route selection methods based on virtual expansible LAN |
| CN107135159A (en) * | 2017-03-31 | 2017-09-05 | 武汉绿色网络信息服务有限责任公司 | The method and system that optimal path is determined in a kind of SDN |
-
2018
- 2018-01-04 CN CN201810008263.5A patent/CN110011915A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102209003A (en) * | 2010-03-29 | 2011-10-05 | 华为技术有限公司 | Link detection method, system and loopback initiation equipment |
| CN102752186A (en) * | 2011-04-20 | 2012-10-24 | 中兴通讯股份有限公司 | Method and system for selecting path, and nodes |
| US20150372901A1 (en) * | 2014-06-20 | 2015-12-24 | Verizon Patent And Licensing Inc. | Pseudowire control channel for signaling events |
| CN104780095A (en) * | 2015-04-30 | 2015-07-15 | 杭州华三通信技术有限公司 | Path detection method and device in SDN |
| US20170041209A1 (en) * | 2015-08-03 | 2017-02-09 | Telefonaktiebolaget L M Ericsson (Publ) | Method and system for path monitoring in a software-defined networking (sdn) system |
| CN105471764A (en) * | 2015-11-16 | 2016-04-06 | 中国科学院信息工程研究所 | Method for guaranteeing end-to-end QoS in SDN network |
| CN105847151A (en) * | 2016-05-25 | 2016-08-10 | 安徽大学 | Multi-constrained QoS (Quality of Service) routing strategy designing method for software defined network |
| CN106130767A (en) * | 2016-09-23 | 2016-11-16 | 深圳灵动智网科技有限公司 | The system and method that a kind of service path failure monitoring and fault solve |
| CN106911532A (en) * | 2017-02-07 | 2017-06-30 | 佛山易识科技有限公司 | Many tunnel intelligent route selection methods based on virtual expansible LAN |
| CN106656847A (en) * | 2017-03-10 | 2017-05-10 | 重庆邮电大学 | Software defined network (SDN) load balancing method with highest network utility |
| CN107135159A (en) * | 2017-03-31 | 2017-09-05 | 武汉绿色网络信息服务有限责任公司 | The method and system that optimal path is determined in a kind of SDN |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112242949A (en) * | 2019-07-18 | 2021-01-19 | 厦门网宿有限公司 | Route distribution method and controller, information routing method and network node equipment |
| CN110430094B (en) * | 2019-07-31 | 2021-01-19 | 西安交通大学 | Detection packet generation method based on active detection in SDN |
| CN110430094A (en) * | 2019-07-31 | 2019-11-08 | 西安交通大学 | Detection packet generation method based on active probe in a kind of SDN |
| CN111030731A (en) * | 2019-11-25 | 2020-04-17 | 华南理工大学 | Power line carrier communication-based software-defined power Internet of things architecture |
| CN111130928A (en) * | 2019-12-10 | 2020-05-08 | 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 |
| 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 |
| CN114157595A (en) * | 2020-09-08 | 2022-03-08 | 超聚变数字技术有限公司 | Communication system, data processing method and related equipment |
| CN112769632A (en) * | 2020-11-30 | 2021-05-07 | 锐捷网络股份有限公司 | Method and system for detecting network fault of data center |
| CN112702253A (en) * | 2020-12-11 | 2021-04-23 | 邦彦技术股份有限公司 | MPLS tunnel creating method, system and storage medium based on network link quality |
| WO2022160806A1 (en) * | 2021-01-28 | 2022-08-04 | 中国电信股份有限公司 | Method and system for guaranteeing end-to-end service |
| CN114915591A (en) * | 2021-01-28 | 2022-08-16 | 中国电信股份有限公司 | End-to-end service guarantee method and system |
| CN114915591B (en) * | 2021-01-28 | 2023-05-02 | 中国电信股份有限公司 | End-to-end service guarantee method and system |
| WO2023019669A1 (en) * | 2021-08-19 | 2023-02-23 | 网宿科技股份有限公司 | Cdn quality inspection method and system, server, and storage medium |
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