CN109274589A - The method and apparatus of business transmission - Google Patents
The method and apparatus of business transmission Download PDFInfo
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- CN109274589A CN109274589A CN201810864668.9A CN201810864668A CN109274589A CN 109274589 A CN109274589 A CN 109274589A CN 201810864668 A CN201810864668 A CN 201810864668A CN 109274589 A CN109274589 A CN 109274589A
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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
- H04L45/30—Routing of multiclass traffic
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- 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
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Abstract
This application provides a kind of business transmitting method and devices, are related to the communications field, for improving service quality end to end.This method comprises: the switching node determines the type of service of business to be transmitted；If the type of service is the first kind, the business to be transmitted is forwarded according to the first flow entry；Wherein, first flow entry is that the SDN controller is generated according to preset path, includes the switching node in the preset path, the transmission path for the business of the first kind that the preset path is that is pre-established be used for transmission；If the type of service is Second Type, the business to be transmitted is forwarded according to the second flow entry.Therefore the business transmitting method of the application can be improved the end-to-end quality of service to first kind business.
Description
Technical field
This application involves the method and apparatus that field of communication technology more particularly to business transmit.
Background technique
Demand with user to network becomes larger, and data center interconnects (Data Center Inter-connect, DCI)
The scale of network is constantly expanded, service quality (Quality of Service, QoS) requirement of the user to DCI network end-to-end
Also higher and higher.
Key business generally is realized by the way of differential service (DiffServ)+underloading in current DCI network
QoS is ensured.In DiffServ model, Business Stream is divided into different differential service classes.The differential service of one Business Stream
Class is by the differential service tag field (Different in its packet header Internet protocol (Internet Protocol, IP)
Service Code Point, DSCP) it indicates.In the DCI network of deployment DiffServ, each router can basis
The dscp field of data packet executes corresponding per hop behavior (Per Hop Behavior, PHB).DiffServ model itself is not
It is able to achieve end-to-end QoS, when the flow of high priority is when certain links converge, network delay can equally occur and sharply become
Greatly, even packet loss phenomena such as.In order to guarantee network quality, operator uses the band of redundancy generally using the network ideas of underloading
Width carrys out exchange for service quality.But often occur whole net underloading in the O&M of catenet and the case where local link congestion, this
The link-quality that will lead to network declines to a great extent.Therefore, DiffServ+ light-load mode can not provide QoS end to end, and
The disadvantage that can also bring the waste of massive band width resource, network construction cost to remain high.
Summary of the invention
This application provides a kind of business transmitting methods, can improve end during DCI network carries out business transmission
To the service quality at end, mitigate the operating pressure of SDN controller, improve bandwidth availability ratio, reduces network construction cost.
In order to achieve the above objectives, the application adopts the following technical scheme that
In a first aspect, this application provides a kind of business transmitting method, this method comprises: switching node determines industry to be transmitted
The type of service of business；Wherein, the type of service is to classify to obtain to business in advance according to user；If the type of service is the
One type then forwards the business to be transmitted according to the first flow entry；Wherein, first flow entry is the SDN controller
It is generated according to preset path, includes the switching node in the preset path, the preset path is being used for of pre-establishing
Transmit the transmission path of the business of the first kind；If the type of service is Second Type, turned according to the second flow entry
Send out business to be transmitted described；Wherein, second flow entry is that the SDN controller is generated according to routed path；The routing
It include the switching node in path, the routed path is the transmission that the SDN controller is calculated according to preset algorithm
Path.
Second aspect, this application provides another business transmitting methods, this method comprises: the SDN controller obtains
Preset path establishes parameter；Wherein, the preset path is to meet the transmission road of the QoS demand of business of the first kind
Diameter；The preset path includes at least one switching node；The parameter of establishing includes: that source address collection, destination address collection, source connect
Ingress, purpose access node, qos parameter；The source address collection is the source address for the business transmitted by the preset path
The set of composition；The destination address collection is the set that the destination address for the business transmitted by the preset path is constituted；Institute
Stating source access node is the access node that source network is linked into DCI network；The purpose access node is that purpose network insertion is arrived
The access node of DCI network；The qos parameter includes the bandwidth of the business demand of the first kind, the first kind
The priority of the business of the time delay of business demand and the first kind；The SDN controller is according to institute in the DCI network
Have link can bandwidth allocation, it is determining to establish the matched preset path of parameter with described；The SDN controller generates and institute
State corresponding first flow entry of preset path；The SDN controller is to each switching node included in the preset path
Issue first flow entry.
The third aspect, this application provides a kind of devices of business transmission, which includes: processing module, for determining
The type of service of business to be transmitted；Wherein, the type of service is to classify to obtain to business in advance according to user；If the business
Type is the first kind, forwards the business to be transmitted according to the first flow entry；Wherein, first flow entry is the SDN
Controller is generated according to preset path, includes the switching node in the preset path, and the preset path is to pre-establish
The business for being used for transmission the first kind transmission path；If the type of service be Second Type, the processing module,
It is also used to forward the business to be transmitted according to the second flow entry；Wherein, second flow entry be the SDN controller according to
Routed path generates；It include the switching node in the routed path, the routed path is the SDN controller according to pre-
The transmission path that imputation method is calculated.
Fourth aspect, this application provides the devices of another business transmission, which includes: acquisition module, for obtaining
Take preset path establishes parameter；Wherein, the preset path is to meet the transmission of the QoS demand of business of the first kind
Path；The preset path includes at least one switching node；The parameter of establishing includes: source address collection, destination address collection, source
Access node, purpose access node, qos parameter；The source address collection is the source of the business transmitted by the preset path
The set that location is constituted；The destination address collection is the set that the destination address for the business transmitted by the preset path is constituted；
The source access node is the access node that source network is linked into DCI network；The purpose access node is purpose network insertion
To the access node of DCI network；The qos parameter includes the bandwidth of the business demand of the first kind, the first kind
Business demand time delay and the first kind business priority；Processing module, for according in the DCI network
All links can bandwidth allocation, it is determining to establish the matched preset path of parameter with described；It generates and the preset path
Corresponding first flow entry；Sending module, for issuing described to each switching node included in the preset path
One flow entry.
5th aspect, the application provide a kind of computer readable storage medium, are stored in computer readable storage medium
Instruction, when computer executes the instruction, which executes business transmitting method described in above-mentioned first aspect.
6th aspect, the application provides a kind of service transmission system, which includes SDN controller, at least
One switching node, at least one source network and at least one purpose network, the switching node is for executing above-mentioned first
Method described in aspect, the SDN controller is for executing method described in above-mentioned second aspect.
The method, apparatus and system of business transmission provided by the present application, SDN controller are that the foundation of first kind business is default
Path is that the business of Second Type calculates routed path.Wherein, the first kind and Second Type are mainly right in advance according to user
Business classifies to obtain.In this way, switching node identifies the type of service of business to be transmitted in DCI network when transmission services, make
The business of one type is forwarded along preset path, and the business of Second Type is along the routed path forwarding being calculated.The application is implemented
In example, due to establishing preset path for the business of the first kind, enable the preset path dedicated for transmitting the first kind
The business of type, in this way, can be incited somebody to action when method provided by the embodiments of the present application is applied when transmitting the business such as higher to QoS demand
The delineation of activities is the business of the first kind, therefore the business transmitting method of the application can be improved the end to first kind business
To end service quality.
Detailed description of the invention
Fig. 1 is a kind of service transmission system schematic diagram of the method application of business transmission provided by the embodiments of the present application；
Fig. 2 is a kind of flow chart of the method for business transmission provided by the embodiments of the present application；
Fig. 3 is the flow chart of the method for another business transmission provided by the embodiments of the present application；
Fig. 4 is the flow chart of the method for another business transmission provided by the embodiments of the present application；
Fig. 5 is a kind of structural schematic diagram of the service transmission device applied to switching node provided by the embodiments of the present application；
Fig. 6 is the structural representation of another service transmission device for being applied to switching node provided by the embodiments of the present application
Figure；
Fig. 7 is a kind of structural schematic diagram of the service transmission device applied to SDN controller provided by the embodiments of the present application；
Fig. 8 is the structural representation of another service transmission device for being applied to switching node provided by the embodiments of the present application
Figure；
Fig. 9 is the structural representation of another service transmission device for being applied to SDN controller provided by the embodiments of the present application
Figure.
Specific embodiment
The method, system and device transmitted below in conjunction with attached drawing to business provided by the present application are described in detail.
Term " first " and " second " in the description of the present application and attached drawing etc. be for distinguishing different objects, and
It is not intended to the particular order of description object.
In addition, the term " includes " being previously mentioned in the description of the present application and " having " and their any deformation, it is intended that
It is to cover and non-exclusive includes.Such as the process, method, system, product or equipment for containing a series of steps or units do not have
It is defined in listed step or unit, but optionally further comprising the step of other are not listed or unit, or optionally
It further include other step or units intrinsic for these process, methods, product or equipment.
It should be noted that in the embodiment of the present application, " illustrative " or " such as " etc. words make example, example for indicating
Card or explanation.Be described as in the embodiment of the present application " illustrative " or " such as " any embodiment or design scheme do not answer
It is interpreted than other embodiments or design scheme more preferably or more advantage.Specifically, " illustrative " or " example are used
Such as " word is intended to that related notion is presented in specific ways.
In the description of the present application, unless otherwise indicated, the meaning of " plurality " is refer to two or more.
Business transmitting method provided by the embodiments of the present application can be applied to data center (Data Center, DC) interconnection
Realize that dual-active, calamity are standby and load balancing, enterprise headquarters and branch office network interconnection, enterprise network and data center interconnect structure
Build mixed cloud, terminal user to data center the scenes such as access in.
Business transmitting method provided by the embodiments of the present application is applied in service transmission system 100 shown in FIG. 1, the business
Transmission system 100 includes: DCI network, at least one source network and at least one purpose network.
Wherein, source network is the network for generating and initiating business transmission, and purpose network is the network of reception business.Business by
Source network reaches purpose network by DCI network.In business transmission process, DCI network is responsible for the routing point of the business of transmission
Match, flow control etc..
Illustratively, the network interconnection of the DCI network application between enterprise headquarters and branch.When branch's network (source network)
When sending business to be transmitted to main office network (purpose network), business to be transmitted is sent to DCI network by branch's network；DCI net
Business to be transmitted is sent in main office network by network.
DCI network is saved by software defined network (Software Defined Network, SDN) controller 101 and exchange
21 composition of point.
SDN technology may be implemented to concentrate all flows in network, flexibly control, and pass through SDN controller pair
The information such as bandwidth, time delay, the packet loss of all links in network monitor in real time and are that service traffics select an optimal path.
Therefore, SDN controller is introduced in the embodiment of the present application in DCI network.SDN controller 101 is used to collect the chain in DCI network
Road information simultaneously establishes preset path for business to be transmitted or calculates transmission path, makes business to be transmitted by preset path or calculates
To transmission path transmitted.Specifically, being needed according to user (such as enterprise customer, data center user) to the transmission of business
It asks and business to be transmitted is divided into the first kind and Second Type.Illustratively, the transmission demand includes time delay, bandwidth, packet loss
The demands such as rate.If user is higher to transmission demand of the business in DCI network, SDN controller 101 can be requested in DCI
Dedicated path (the embodiment of the present application is described as preset path) is predefined in network to transmit its business.In view of different user
Demand, there may be a plurality of preset paths in DCI network, corresponding with the business of different user respectively.So, the first kind
The business of type is the business transmitted in the preset path in DCI network, is for needs and passes in same preset path
Defeated business, these business source address having the same and destination address.In this way, the business of the first kind is by source network by pre-
If path transmission is to purpose network.The business of the Second Type is then the business that other are not transmitted by any preset path,
The transmission path of this kind of business is calculated when being specific transmission by SDN controller.
Switching node 21 includes source access node 211, normal switching node 212 and purpose access node 213.
Source access node 211 is the access node that source network is linked into DCI network, and purpose access node 213 is purpose net
Network is linked into the access node of DCI network, and normal switching node is other switching nodes in DCI network.Source access node
211, the flow entry issued of normal switching node 212 and the reception of purpose access node 213 from SDN controller 101, and according to
Flow entry is forwarded business datum.Specifically, the flow entry is for referring to when the business to be transmitted is the first kind
Show that business to be transmitted successively forwards in each switching node that preset path is included, until in purpose network.When it is described to
When transmission services are Second Type, the flow entry is used to indicate what business to be transmitted was calculated in the SDN controller 101
It is successively forwarded in each switching node that routed path is included, until in purpose network.
At least one terminal is separately included in source network and purpose network, the terminal in source network is for sending service resources
Request；Terminal in purpose network is used to respond the service resources request of the terminal in source network.
The embodiment of the present application provides a kind of business transmitting method, is applied in service transmission system shown in FIG. 1.
As shown in Fig. 2, the method includes S1-S3:
S1, switching node determine the type of service of business to be transmitted.
Wherein, the business to be transmitted is the business that the needs sent by source network transmit in DCI network.The business
Type includes the first kind and Second Type.As it was noted above, the first kind and Second Type are to be divided according to user demand
It arrives.The business of the first kind can be transmitted in the preset path in DCI network.The business of Second Type is not then in DCI network
In any preset path in transmit.
Illustratively, in trans-regional enterprise, there is broadband high-speed demand for interconnection between each branch of enterprise and enterprise headquarters,
Then the enterprise customer can apply establishing the preset path with certain bandwidth respectively between each branch of enterprise and enterprise headquarters.
So, for the business transmitted between branch of enterprise and enterprise headquarters by pre-established preset path, the embodiment of the present application
It is described as the business of the first kind.For the business transmitted between other business, such as branch of enterprise and internet, the application is real
Apply the business that example is described as Second Type.
If the type of service is the first kind, following S2 are executed.If the type of service is Second Type, execute
Following S3.
If S2, the type of service are the first kind, the business to be transmitted is forwarded according to the first flow entry.
Wherein, first flow entry is that the SDN controller is generated according to preset path, includes in the preset path
The switching node, the transmission path for the business of the first kind that the preset path is that is pre-established be used for transmission；The
The business of one type can successively forward in all switching nodes for receiving first flow entry.When preset path exists
When, first flow entry is in active state, and when preset path is deleted, first flow entry is also deleted simultaneously.
Specifically, user configures preset path parameter by network server or other modes；After the completion of configuration,
The foundation request of the preset path is sent to the northbound interface of SDN controller；The SDN controller is built according to what is received
Vertical parameter establishes preset path；The SDN controller generates first flow entry according to the preset path and is issued to institute
It states in each switching node in preset path.The method for building up of preset path is detailed in each step S301- shown in Fig. 3 hereinafter
S306。
If S3, the type of service are Second Type, the business to be transmitted is forwarded according to the second flow entry.
Wherein, second flow entry is that the SDN controller is generated according to routed path；Include in the routed path
The switching node, the routed path are the transmission path that the SDN controller is calculated according to preset algorithm.
Specifically, SDN controller determines routing road according to preset algorithm when business to be transmitted is the business of Second Type
Diameter.Later, the SDN controller generates the second flow entry according to the routed path, and is issued in the routed path
In each switching node.The business of Second Type can successively turn in all switching nodes for receiving second flow entry
Hair.Second flow entry is provided with time-out time, and when being more than the time-out time, second flow entry can then be deleted
It removes.
Illustratively, the preset algorithm can be dijkstra's algorithm.Specifically, for all links in DCI network
In each link e′Construct weight w eight (e′), weight w eight (e′) it is whether the link can be used as Second Type
The parameter of the composition link of business routed path.
Specifically,
Wherein, M indicates the maximum bandwidth that all links are supported in DCI network；Load(e′) it is link e′In preset time
Average load；Bavail(e′) it is link e′Can bandwidth allocation；Bmax(e′) it is link e′Maximum bandwidth；β is that weight adjusts ginseng
Number.β value by the adjusting to β, selects weight w eight (e the most suitable between (0,1)′), so that SDN controller
In DCI network be Second Type service selection path when can avoid the first kind service traffics concentrate link and
It can avoid the link of heavier loads.
During executing above-mentioned S1 to S3, SDN controller is respectively by the transmission path of business to be transmitted (transmission road
Diameter may be the preset path of the business of the transmission first kind, it is also possible to for the routed path of the business of transmission Second Type) under
Corresponding each switching node is dealt into order to which each switching node is according to the transmission path business.Specifically, source network
The business to be transmitted is first sent to source access node, the source access node further according to the forwarding of specific transmission path it is described to
Transmission services are to other access nodes.Step as shown in Figure 4 is executed between each switching node for forwarding the business
S401 to S404 is with transmission services.
S401, switching node determine the type and QoS demand of business to be transmitted.
Wherein, business to be transmitted is divided into the delay sensitive business of the first kind, the bandwidth safeguard business of the first kind, first
General service, the delay sensitive business of Second Type and the general service of Second Type of type.Delay sensitive business is to net
Network time delay requires relatively high business；Bandwidth safeguard business is of less demanding to time delay, but needs certain bandwidth safeguard
Business；General service is not do desired business to time delay and bandwidth.
S402, switching node are used for transmission described to be passed according to the determination of the type of service and QoS demand of business to be transmitted
The transmission queue of defeated business.
Specifically, being pre-configured with the type of service of business to be transmitted in the access node of source and QoS demand and business are transmitted
Conversion method between queue.After switching node identifies the priority of business to be transmitted, according to preconfigured conversion method
Determine the transmission queue of various businesses in business to be transmitted.
S403, source access node and normal switching node forward business to be transmitted until mesh according to the priority of transmission queue
Access node.
Specifically, source access node complete business to be transmitted type of service and QoS demand and business transmission queue it
Between convert after the transmission queue is according to priority successively forwarded along normal switching node.Wherein, normal switching node can
It identifies the priority of the transmission queue, and sends transmission queue according to priority；Until purpose access node.
By business transmission queue, to be converted to type different from QoS demand according to the conversion method for S404, purpose access node
Business, which is sent in purpose network.
Specifically, purpose access node, which obtains business, transmits queue.Be provided with business transmission in purpose access node in advance
Conversion method between queue and the type of service and QoS demand of business to be transmitted；Purpose access node is according to the conversion side
Business transmission queue is converted to the type business different from QoS demand by method, which is sent in purpose network.
Optionally, the sort method of the priority of business transmission queue includes: in S403
The priority level of the corresponding transmission queue of the delay sensitive business of the first kind is P1；The first kind
There are two different priority levels P2, P3 for the corresponding transmission queue tool of the bandwidth safeguard business of type.The bandwidth of the first kind
Guarantee business does not allow packet loss to of less demanding, therefore by the corresponding transmission of the bandwidth safeguard business of the first kind
Two priority levels are arranged in queue.When it, which transmits queue, is no more than preset threshold, the bandwidth safeguard business of the first kind is corresponding
The transmission queue priority level be P3, at this time preferentially send Second Type delay sensitive business.When its transmission is to column
When more than preset threshold, the priority level for adjusting the corresponding transmission queue of bandwidth safeguard business of the first kind is P2, excellent
First send the bandwidth safeguard business of the first kind.The delay sensitive business of the Second Type it is corresponding it is described transmission queue it is excellent
First grade is P4.The first kind it is corresponding with the general service of Second Type it is described transmission queue priority level be
P5.The priority level is by sequence arrangement from high to low are as follows: P1 > P2 > P4 > P3 > P5.
Wherein, the method for adjustment of the priority of the transmission queue of the bandwidth safeguard business pair of the first kind specifically: when
The queue length of the corresponding transmission queue of the bandwidth safeguard business of the first kind is greater than LmaxWhen, by the first kind
The priority of the corresponding transmission queue of bandwidth safeguard business is adjusted to P2；When the bandwidth safeguard business of the first kind is corresponding
The queue length for transmitting queue is less than LminWhen, by the preferential of the corresponding transmission queue of the bandwidth safeguard business of the first kind
Grade is adjusted to P3.
Lmin<Lmax< L, the L are that the buffer area of the corresponding transmission queue of the bandwidth safeguard business of the first kind is big
It is small.LminWith LmaxFor the tune of the priority level of the corresponding transmission queue of bandwidth safeguard business of the pre-set first kind
Whole threshold value.
When the queue length of the corresponding transmission queue of the bandwidth safeguard business of the first kind is by LmaxIt drops in Lmin
With LmaxBetween when, the bandwidth safeguard business of the first kind it is corresponding transmission queue priority level remain P2.When described
The queue length of the corresponding transmission queue of the bandwidth safeguard business of the first kind is by LminIt rises in LminWith LmaxBetween when, institute
The priority level for stating the corresponding transmission queue of bandwidth safeguard business of the first kind remains P3.
Optionally, in order to avoid the priority level of the corresponding transmission queue of the bandwidth safeguard business of the first kind is frequent
Adjustment, can be by LminWith LmaxDifference setting it is larger.Illustratively, by LminIt is set as Lmin=50%*L, by LmaxSetting
For Lmax=80%*L.
Optionally, after the preset path establishes completion, the method also includes: the SDN controller, which obtains, to be expanded
Mark and dilatation or capacity reducing bandwidth in perhaps capacity reducing parameter, the dilatation or capacity reducing parameter including the preset path；It is described
What SDN controller inquired all links in the DCI network can bandwidth allocation；The SDN controller re-establishes described default
Simultaneously recalculate the link dilatation index in path；Alternatively, the SDN controller, which obtains, deletes parameter, in the deletion parameter
Mark including the preset path；The SDN controller deletes the flow entry of all switching nodes in the preset path, releases
Put the bandwidth resources that the preset path occupies.
Optionally, if the SDN controller obtains the capacity reducing parameter or deletes parameter, the SDN controller is institute
State DCI network settings more new logo；The SDN controller inspects periodically in the DCI network more new logo whether is arranged；If institute
It states and is provided with more new logo in DCI network, then the SDN controller is to all preset paths in DCI network according to quality etc.
The descending sequence of value of series re-establishes the preset path.
Optionally, the method for building up of preset path described in S2 is as shown in figure 3, include S301-S306:
What S301, the SDN controller obtained the preset path establishes parameter.
Wherein, the parameter of establishing includes: source address collection, destination address collection, source access node, purpose access node, QoS
Parameter.Described establish can also include virtual LAN identity number (VirtualLocal Area Network in parameter
IDentity, VLAN ID).
The source address collection is the set that the source address for the business transmitted by the preset path is constituted.The destination
Location collection is the set that the destination address for the business transmitted by the preset path is constituted.The source access node connects for source network
Enter the access node to DCI network.The purpose access node is access node of the purpose network insertion to DCI network.It is described
Qos parameter includes the bandwidth of the business demand of the first kind, the time delay of the business demand of the first kind and described
The priority of the business of one type.
Illustratively, the preset path is established between branch of enterprise and enterprise headquarters.The source address integrates as enterprise
The network address collection of branch；The network address collection that the destination address integrates as enterprise headquarters.The section of branch of enterprise access DCI network
Point is used as source access node；Enterprise headquarters access the node access node as a purpose of DCI network.Band of the enterprise customer to network
Wide demand is as qos parameter.
S302, the SDN controller obtain first path information aggregate according to the parameter of establishing.
First path is in the DCI network from the source access node to the path of the purpose access node.It is described
It include the switching node information and link information of all first paths in first path information aggregate.In the link information
Including link bandwidth information.
S303, at least one first shortest path is determined from the first path information aggregate.
Specifically, SDN controller is determined to access from source access node to purpose from the first path information aggregate
Shortest path in all paths of node.The shortest path at least one.It is most short using the shortest path as first
Path.
S304, path bandwidth is selected from first shortest path meet the first kind established in parameter
Business demand bandwidth requirement path as the preset path.
Specifically, SDN controller distinguishes the path bandwidth parameter of all shortest paths at least one shortest path
It is compared with the bandwidth requirement of the business demand of the first kind.It selects and meets the first kind established in parameter
The path of the bandwidth requirement of business demand is as the preset path.
Optionally, when described established in parameter is not satisfied in the path bandwidth of all first shortest paths
When the bandwidth requirement of the business demand of one type, following steps are executed:
S3041, the SDN controller obtain after deleting all i-th shortest paths in the i-th routing information set
I+1 routing information set.
S3042, at least one i+1 shortest path is determined again from the i+1 routing information set.
S3043, selected from i+1 shortest path described at least one one currently can bandwidth allocation meet the foundation
The path of bandwidth requirement in parameter is as the preset path.
If the bandwidth demand established in parameter is not satisfied in the bandwidth of all i+1 shortest paths, i's
Value adds 1 and repeats above-mentioned steps S3041 to S3043；Wherein, the initial value of the i is 1.
After circulation executes above-mentioned steps S3041 to S3043, if N routing information collection is combined into sky or from the N
The N shortest path determined in routing information set is not able to satisfy the QoS demand of the business of the first kind, then described default
Path creation failure.
If the N shortest path determined from N routing information set meets the first kind established in parameter
The bandwidth requirement of the business demand of type, then using the N shortest path as the preset path, wherein the value of the N is
More than or equal to 2.
If the N shortest path that the N routing information collection is combined into sky or determines from the N routing information set
It is not able to satisfy the QoS demand of the business of the first kind, then the preset path creation failure.If believing from the path the N
The bandwidth for the business demand that the N shortest path determined in breath set meets the first kind established in parameter is wanted
It asks；Then using the N shortest path as the preset path.
Optionally, in the embodiment of the present application, if using the N shortest path as the preset path, it will be described pre-
If the credit rating in path is set as N；The credit rating reflects the service quality level of the preset path, the quality
The value of grade is bigger, and the service quality of the preset path is poorer.
S305, the SDN controller generate first flow entry corresponding with the preset path.
S306, the SDN controller issue described first-class to each switching node included in the preset path
List item.
Optionally, in above-mentioned S304, institute is not satisfied when the N shortest path in the N routing information set
When stating the bandwidth requirement for establishing the business demand of the first kind in parameter；Present invention also provides a kind of link dilatations to refer to
Several calculation methods, the method includes calculation formula:
O ' (e, N)=γN-1*B-Bavail(e))。
Wherein link e is the link that current available bandwidth is less than the preset path bandwidth demand in N shortest path, o '
(e, N) indicates the preset path when n-th path is established to the dilatation exponential increment of link e；；γ is link dilatation index
Adjustment parameter；B is the bandwidth of the business demand of the first kind；Bavail(e) band is distributed for the current of the link
It is wide；.
In the preset path establishment process, it will be overlapped to obtain institute according to the calculated o ' of above-mentioned formula (e, N)
Preset path is stated to the dilatation exponential increment of link e.
By the network, currently all preset paths add up the dilatation exponential increment of link e to obtain the link e
Dilatation index.Dilatation is carried out according to the link in network described in the link dilatation exponent pair.
The method of business transmission provided by the present application, switching node determine the type of service of business to be transmitted；If the industry
Service type is the first kind, then transmits the business to be transmitted by the first flow entry；If the type of service is Second Type,
The business to be transmitted is then transmitted by the second flow entry；After the transmission path for determining the business, at the access node of source
It is converted between type of service and QoS demand to the first kind and the Second Type and business transmission queue,
Transmit the business to be transmitted according to pre-set priority.And SDN controller is the first kind in advance
The business of type establishes the preset path, is that the business to be transmitted of Second Type calculates the routed path.Therefore the application
When the business transmitting method of offer can be avoided the service convergence of high priority in DCI network network delay sharply become larger, packet loss,
Mitigate and bandwidth availability ratio is improved to the pressure of SDN controller, reduces network construction cost.
As shown in figure 5, the embodiment of the present application provides a kind of device of business transmission, described device is applied to switching node,
Method for executing aforementioned business transmission, described device include:
Processing module 501, for determining the type of service of business to be transmitted；Wherein, the type of service is according to user
In advance business is classified to obtain.
If the type of service is the first kind, the business to be transmitted is forwarded according to the first flow entry；Wherein, described
One flow entry is that the SDN controller is generated according to preset path, includes the switching node in the preset path, described pre-
If the transmission path for the business of the first kind that path is that is pre-established be used for transmission.
If the type of service is Second Type, the business to be transmitted is forwarded according to the second flow entry；Wherein, described
Two flow entrys are that the SDN controller is generated according to routed path；It include the switching node, the road in the routed path
It is the transmission path that the SDN controller is calculated according to preset algorithm by path.
Optionally, in conjunction with Fig. 5, as shown in fig. 6, device provided by the embodiments of the present application can also include sending module 601.
The processing module 501 is also used to determine the type of service and QoS demand of business to be transmitted；According to the industry
Service type and QoS demand determine the transmission queue for being used for transmission the business to be transmitted.Sending module 601, for according to institute
The priority for stating transmission queue forwards the business to be transmitted.
Optionally, the processing module 501 is also used to the corresponding biography of the delay sensitive business of the first kind
The priority level of defeated queue is set as P1；For the first kind the corresponding transmission queue sets two of bandwidth safeguard business not
Same priority level P2, P3.By the priority level of the corresponding transmission queue of the time delay sensitive type business of the Second Type
It is set as P4；The priority level of the first kind transmission queue corresponding with the general service of Second Type is set as
P5.The priority level is by sequence arrangement from high to low are as follows: P1 > P2 > P4 > P3 > P5.
Optionally, the processing module 501 is also used to the corresponding transmission team of bandwidth sensitive business when the first kind
The queue length of column is more than LmaxWhen, by the priority level tune of the corresponding transmission queue of the bandwidth sensitive business of the first kind
Whole is P2；When the queue length of the corresponding transmission queue of the bandwidth sensitive business of the first kind is less than LminWhen, by described
The priority level of the corresponding transmission queue of the bandwidth sensitive business of one type is adjusted to P3.
When the queue length of the corresponding transmission queue of the bandwidth sensitive business of the first kind is by LmaxIt drops in Lmin
With LmaxBetween when, the bandwidth sensitive business of the first kind it is corresponding transmission queue priority level remain P2；When described
The queue length of the corresponding transmission queue of the bandwidth sensitive business of the first kind is by LminIt rises in LminWith LmaxBetween when, institute
The priority level for stating the corresponding transmission queue of bandwidth sensitive business of the first kind remains P3.
Wherein, Lmin<Lmax< L, the L are the buffering of the corresponding transmission queue of the bandwidth sensitive business of the first kind
Area's size.
As shown in fig. 7, the device of another kind business transmission provided by the embodiments of the present application, described device are controlled applied to SDN
Device processed, the method for executing aforementioned business transmission, described device include:
Module 701 is obtained, establishes parameter for obtain preset path.Wherein, the preset path is to meet described the
The transmission path of the QoS demand of the business of one type；The preset path includes at least one switching node.
The parameter of establishing includes: source address collection, destination address collection, source access node, purpose access node, qos parameter；
The source address collection is the set that the source address for the business transmitted by the preset path is constituted；The destination address collection is logical
Cross the set that the destination address of the business of the preset path transmission is constituted；The source access node is that source network is linked into DCI
The access node of network；The purpose access node is access node of the purpose network insertion to DCI network；The qos parameter
The bandwidth of business demand including the first kind, the time delay of the business demand of the first kind and the first kind
Business priority.
Processing module 702, for according in the DCI network all links can bandwidth allocation, it is determining with the foundation
The matched preset path of parameter.The processing module is also used to generate the first flow entry corresponding with the preset path.
Sending module 703, for issuing first flow table to each switching node included in the preset path
?.
Optionally, the processing module 702 is also used to obtain first path information aggregate according to the parameter of establishing；The
One path is in the DCI network from the source access node to the path of the purpose access node；The first path letter
It include the switching node information and link information of all first paths in breath set.
Optionally, the processing module 702, be also used to determine from the first path information aggregate at least one
One shortest path.
Optionally, the processing module 702 is also used to select path bandwidth from the first shortest path described at least one
Meet the path of the bandwidth requirement of the business demand for establishing the first kind in parameter as the preset path.
Optionally, the processing module 702 is also used to be not satisfied when the path bandwidth of all first shortest paths
When the bandwidth requirement of the business demand for establishing the first kind in parameter, following steps are executed:
S3041, the SDN controller obtain after deleting all i-th shortest paths in the i-th routing information set
I+1 routing information set.
S3042, at least one i+1 shortest path is determined again from the i+1 routing information set.
S3043, selected from i+1 shortest path described at least one one currently can bandwidth allocation meet the foundation
The path of bandwidth requirement in parameter is as the preset path.
If the bandwidth demand established in parameter is not satisfied in the bandwidth of all i+1 shortest paths, i's
Value adds 1 and repeats above-mentioned steps S3041 to S3043；Wherein, the initial value of the i is 1.
If the N shortest path that N routing information collection is combined into sky or determines from the N routing information set cannot
Meet the QoS demand of the business of the first kind, then the preset path creation failure.
If the N shortest path determined from N routing information set meets the first kind established in parameter
The bandwidth requirement of the business demand of type, then using the N shortest path as the preset path, wherein the value of the N is
More than or equal to 2.
The processing module 702 is also used to set N for the credit rating of the preset path；The credit rating is anti-
The service quality level of the preset path is reflected, the value of the credit rating is bigger, and the service quality of the preset path is just
It is poorer.
Optionally, the processing module is also used to when the N shortest path in the N routing information set is discontented
When the bandwidth requirement of the foot business demand for establishing the first kind in parameter；N shortest path is executed following
A step:
Count in the N shortest path currently can bandwidth allocation be less than the first kind business demand each
Link；Calculate each link it is current can bandwidth allocation and the first kind business demand bandwidth difference；
Calculate the product of the difference Yu path adjustment parameter；Wherein, the path adjustment parameter is variable, for adjusting the difference
Weight in link dilatation index；All product accumulations of link described in the preset path establishment process get up
To the preset path to the dilatation exponential increment of the link；By the SDN network currently all preset paths to the chain
The dilatation exponential increment on road, which adds up, obtains the dilatation index of the link；In network O&M or preset path establishes failure
When the network according to the link dilatation exponent pair in link carry out dilatation.
Fig. 8 shows another possibility involved in above-described embodiment applied to the service transmission device of switching node
Structural schematic diagram.The device includes: processor 802 and communication interface 803.Processor 802 is used for the movement to device and carries out
Control management, for example, execute above-mentioned processing module 501 execute the step of, and/or for execute techniques described herein its
Its process.Communication interface 803 is used to support the communication of the device Yu other network entities, for example, executing above-mentioned sending module 601
The step of execution.Terminal can also include memory 801 and bus 804, memory 801 for storage device program code and
Data.
Wherein, above-mentioned processor 802 may be implemented or execute various exemplary in conjunction with described in present disclosure
Logic block, unit and circuit.The processor can be central processing unit, general processor, and digital signal processor is dedicated
Integrated circuit, field programmable gate array or other programmable logic device, transistor logic, hardware component or its
Any combination.It, which may be implemented or executes, combines various illustrative logic blocks described in present disclosure, unit
And circuit.The processor is also possible to realize the combination of computing function, such as combines comprising one or more microprocessors,
DSP and the combination of microprocessor etc..
Memory 801 may include volatile memory, such as random access memory；The memory also may include non-
Volatile memory, such as read-only memory, flash memory, hard disk or solid state hard disk；The memory can also include above-mentioned
The combination of the memory of type.
Bus 804 can be expanding the industrial standard structure (Extended Industry Standard
Architecture, EISA) bus etc..Bus 804 can be divided into address bus, data/address bus, control bus etc..For convenient for table
Show, only indicated with a thick line in Fig. 8, it is not intended that an only bus or a type of bus.
The service transmission device that Fig. 9 is shown involved in above-described embodiment applied to SDN controller is alternatively possible
Structural schematic diagram.The device includes: processor 902 and communication interface 903.Processor 902 is used for the movement to device and carries out
Control management, for example, execute above-mentioned processing module 702 execute the step of, and/or for execute techniques described herein its
Its process.Communication interface 903 is used to support the communication of device Yu other network entities, for example, executing above-mentioned 701 He of acquisition module
The step of sending module 703 executes.Device can also include memory 901 and bus 904, and memory 901 is used for storage device
Program code and data.
Wherein, above-mentioned processor 902 may be implemented or execute various exemplary in conjunction with described in present disclosure
Logic block, unit and circuit.The processor can be central processing unit, general processor, and digital signal processor is dedicated
Integrated circuit, field programmable gate array or other programmable logic device, transistor logic, hardware component or its
Any combination.It, which may be implemented or executes, combines various illustrative logic blocks described in present disclosure, unit
And circuit.The processor is also possible to realize the combination of computing function, such as combines comprising one or more microprocessors,
DSP and the combination of microprocessor etc..
Memory 901 can may include volatile memory, such as random access memory；The memory also may include
Nonvolatile memory, such as read-only memory, flash memory, hard disk or solid state hard disk；The memory can also include upper
State the combination of the memory of type.
Bus 904 can be expanding the industrial standard structure (Extended Industry Standard
Architecture, EISA) bus etc..Bus 904 can be divided into address bus, data/address bus, control bus etc..For convenient for table
Show, only indicated with a thick line in Fig. 9, it is not intended that an only bus or a type of bus.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenienct and succinct, only with the division progress of above-mentioned each functional unit for example, in practical application, can according to need and will be upper
It states function distribution to be completed by different functional units, i.e., the internal structure of device is divided into different functional units, to complete
All or part of function described above.The specific work process of the system, apparatus, and unit of foregoing description, before can referring to
The corresponding process in embodiment of the method is stated, details are not described herein.
The embodiment of the present application also provides a kind of computer readable storage medium, and finger is stored in computer readable storage medium
Enable, when computer executes the instruction, the computer execute shown in above method embodiment in method flow SDN controller or
Each step that switching node executes.
Wherein, computer readable storage medium, such as electricity, magnetic, optical, electromagnetic, infrared ray can be but not limited to or partly led
System, device or the device of body, or any above combination.The more specific example of computer readable storage medium is (non-poor
The list of act) it include: the electrical connection with one or more conducting wires, portable computer diskette, hard disk.Random access memory
(Random Access Memory, RAM), read-only memory (Read-Only Memory, ROM), erasable type may be programmed read-only
It is memory (ErasableProgrammable Read Only Memory, EPROM), register, hard disk, optical fiber, portable tight
Gather disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), light storage device, magnetic memory device,
Or above-mentioned people is in appropriate combination or the computer readable storage medium of any other form of this field numerical value.One
The illustrative storage medium of kind is coupled to processor, to enable a processor to from the read information, and can be to this
Information is written in storage medium.Certainly, storage medium is also possible to the component part of processor.Pocessor and storage media can position
In application-specific IC (Application Specific Integrated Circuit, ASIC).In the application reality
It applies in example, computer readable storage medium can be any tangible medium for including or store program, which can be commanded
Execution system, device or device use or in connection.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Change or replacement within the technical scope of the present application should all be covered within the scope of protection of this application.
Claims (16)
1. a kind of method of business transmission, which is characterized in that applied to the software defined network SDN network for realizing network interconnection
In, the SDN network includes: SDN controller and at least one switching node；The described method includes:
The switching node determines the type of service of business to be transmitted；Wherein, the type of service is according to user in advance to industry
Business classification obtains；
If the type of service is the first kind, the business to be transmitted is forwarded according to the first flow entry；Wherein, described first
Flow entry is that the SDN controller is generated according to preset path, includes the switching node in the preset path, described default
The transmission path for the business of the first kind that path is that is pre-established be used for transmission；
If the type of service is Second Type, the business to be transmitted is forwarded according to the second flow entry；Wherein, described second
Flow entry is that the SDN controller is generated according to routed path；It include the switching node, the routing in the routed path
Path is the transmission path that the SDN controller is calculated according to preset algorithm.
2. the method for business transmission according to claim 1, which is characterized in that the method also includes:
The switching node determines the type of service and service quality QoS demand of business to be transmitted；
The switching node determines the transmission team for being used for transmission the business to be transmitted according to the type of service and QoS demand
Column；
The switching node forwards the business to be transmitted according to the priority of the transmission queue.
3. the method for business transmission according to claim 2, which is characterized in that the business of the first kind includes time delay
Sensitive traffic, bandwidth safeguard business and general service；The business of the Second Type includes delay sensitive business and general service；
Wherein, the priority level of the corresponding transmission queue of the delay sensitive business of the first kind is P1；Described first
There are two different priority levels P2, P3 for the corresponding transmission queue tool of the bandwidth safeguard business of type；
The priority level of the corresponding transmission queue of the time delay sensitive type business of the Second Type is P4；The first kind
The priority level of the transmission queue corresponding with the general service of Second Type is P5；
The priority level is by sequence arrangement from high to low are as follows: P1 > P2 > P4 > P3 > P5.
4. the method for business transmission according to claim 3, which is characterized in that the bandwidth safeguard business of the first kind
There are two the corresponding transmission queue tools, and different priority levels P2, P3 includes:
When the queue length of the corresponding transmission queue of the bandwidth sensitive business of the first kind is more than LmaxWhen, by described first
The priority level of the corresponding transmission queue of the bandwidth sensitive business of type is adjusted to P2；
When the queue length of the corresponding transmission queue of the bandwidth sensitive business of the first kind is less than LminWhen, by described first
The priority level of the corresponding transmission queue of the bandwidth sensitive business of type is adjusted to P3；
When the queue length of the corresponding transmission queue of the bandwidth sensitive business of the first kind is by LmaxIt drops in LminWith Lmax
Between when, the bandwidth sensitive business of the first kind it is corresponding transmission queue priority level remain P2；
When the queue length of the corresponding transmission queue of the bandwidth sensitive business of the first kind is by LminIt rises in LminWith Lmax
Between when, the bandwidth sensitive business of the first kind it is corresponding transmission queue priority level remain P3；
Wherein, Lmin<Lmax< L, the L are that the buffer area of the corresponding transmission queue of the bandwidth sensitive business of the first kind is big
It is small.
5. a kind of method of business transmission, which is characterized in that in the SDN network applied to the realization network interconnection, the SDN network
It include: software defined network SDN controller and at least one switching node；The described method includes:
The SDN controller acquisition preset path establishes parameter；Wherein, the preset path is being used for transmission of pre-establishing
The transmission path of the business of the first kind；The preset path includes at least one switching node；It is described to establish parameter packet
It includes: source address collection, destination address collection, source access node, purpose access node, service quality QoS parameter；The source address collection is
The set that the source address for the business transmitted by the preset path is constituted；The destination address collection is to pass through the preset path
The set that the destination address of the business of transmission is constituted；The source access node is the access that source network is linked into the SDN network
Node；The purpose access node is access node of the purpose network insertion to the SDN network；The qos parameter includes institute
State the business of the bandwidth of the business demand of the first kind, the time delay of the business demand of the first kind and the first kind
Priority；
The SDN controller according to links all in the SDN network can bandwidth allocation, determination matched with the parameter of establishing
The preset path；
The SDN controller generates the first flow entry corresponding with the preset path；
The SDN controller issues first flow entry to each switching node included in the preset path.
6. the method for business transmission according to claim 5, which is characterized in that the SDN controller is according to the SDN net
In network all links can bandwidth allocation, it is determining to establish the matched preset path of parameter with described, comprising:
The SDN controller obtains first path information aggregate according to the parameter of establishing；First path is in the SDN network
From the source access node to the path of the purpose access node；It include all described the in the first path information aggregate
The switching node information and link information in one path；
At least one first shortest path is determined from the first path information aggregate；
Path bandwidth is selected from least one described first shortest path meets the first kind established in parameter
Business demand bandwidth requirement path as the preset path.
7. the method for business transmission according to claim 6, which is characterized in that the method also includes:
When the industry for establishing the first kind in parameter is not satisfied in the path bandwidth of all first shortest paths
When the bandwidth requirement of business demand, following steps are executed:
S1, the SDN controller obtain i+1 path after deleting all i-th shortest paths in the i-th routing information set
Information aggregate；
S2, at least one i+1 shortest path is determined again from the i+1 routing information set；
S3, selected from i+1 shortest path described at least one one currently can bandwidth allocation meet described establish in parameter
Bandwidth requirement path as the preset path；
If the bandwidth demand established in parameter, the value of i is not satisfied in the bandwidth of all i+1 shortest paths
Add 1 and repeats above-mentioned steps S1 to S3；Wherein, the initial value of the i is 1；
If the N shortest path that N routing information collection is combined into sky or determines from the N routing information set is not able to satisfy
The QoS demand of the business of the first kind, then the preset path creation failure；
If the N shortest path determined from N routing information set meets the first kind established in parameter
The bandwidth requirement of business demand, then using the N shortest path as the preset path, wherein the value of the N be greater than
Equal to 2.
8. the method for business transmission according to claim 7, which is characterized in that the method also includes:
When the first kind established in parameter is not satisfied in the N shortest path in the N routing information set
Business demand bandwidth requirement when, following each step is executed to N shortest path:
Count in the N shortest path currently can bandwidth allocation be less than the first kind business demand each chain
Road；
Calculate each link it is current can bandwidth allocation and the first kind business demand bandwidth difference；
Calculate the product of the difference Yu path adjustment parameter；Wherein, the path adjustment parameter is variable, described for adjusting
Weight of the difference in link dilatation index；
All product accumulations of link described in the preset path establishment process are obtained into the preset path to described
The dilatation exponential increment of link；By the current all preset paths of the SDN network to the dilatation exponential increment of the link
It adds up and obtains the dilatation index of the link；The link dilatation index, which is used to indicate, carries out the link in the network
The size and degree of priority of dilatation bandwidth when dilatation；
Dilatation is carried out according to the link in network described in the link dilatation exponent pair.
9. a kind of device of business transmission, which is characterized in that in the SDN network applied to the realization network interconnection, the SDN network
It include: software defined network SDN controller and at least one switching node；Described device includes:
Processing module, for determining the type of service of business to be transmitted；Wherein, the type of service is according to user in advance to industry
Business classification obtains；
If the type of service is the first kind, the business to be transmitted is forwarded according to the first flow entry；Wherein, described first-class
List item is that the SDN controller is generated according to preset path, includes the switching node, the default road in the preset path
The transmission path for the business of the first kind that diameter is that is pre-established be used for transmission；
If the type of service is Second Type, the business to be transmitted is forwarded according to the second flow entry；Wherein, the second
List item is that the SDN controller is generated according to routed path；It include the switching node, the routing road in the routed path
Diameter is the transmission path that the SDN controller is calculated according to preset algorithm.
10. the device of business transmission according to claim 9, which is characterized in that described device further includes sending module,
In:
The processing module is also used to determine the type of service and QoS demand of business to be transmitted；According to the type of service with
And QoS demand determines the transmission queue for being used for transmission the business to be transmitted；
Sending module, for forwarding the business to be transmitted according to the priority of the transmission queue.
11. the device of business transmission according to claim 10, which is characterized in that when the business of the first kind includes
Prolong sensitive traffic, bandwidth safeguard business and general service；The business of the Second Type includes delay sensitive business and common industry
Business；
The processing module is also used to the priority scheduling of the corresponding transmission queue of the delay sensitive business of the first kind
Grade is set as P1；For corresponding described transmission two different priority levels of queue sets of bandwidth safeguard business of the first kind
P2,P3；
The priority level of the corresponding transmission queue of the time delay sensitive type business of the Second Type is set as P4；It will be described
The priority level of the first kind transmission queue corresponding with the general service of Second Type is set as P5；
The priority level is by sequence arrangement from high to low are as follows: P1 > P2 > P4 > P3 > P5.
12. the device of business transmission according to claim 11, which is characterized in that
The processing module, is also used to:
When the queue length of the corresponding transmission queue of the bandwidth sensitive business of the first kind is more than LmaxWhen, by described first
The priority level of the corresponding transmission queue of the bandwidth sensitive business of type is adjusted to P2；
When the queue length of the corresponding transmission queue of the bandwidth sensitive business of the first kind is less than LminWhen, by described first
The priority level of the corresponding transmission queue of the bandwidth sensitive business of type is adjusted to P3；
When the queue length of the corresponding transmission queue of the bandwidth sensitive business of the first kind is by LmaxIt drops in LminWith Lmax
Between when, the bandwidth sensitive business of the first kind it is corresponding transmission queue priority level remain P2；
When the queue length of the corresponding transmission queue of the bandwidth sensitive business of the first kind is by LminIt rises in LminWith Lmax
Between when, the bandwidth sensitive business of the first kind it is corresponding transmission queue priority level remain P3；
Wherein, Lmin<Lmax< L, the L are that the buffer area of the corresponding transmission queue of the bandwidth sensitive business of the first kind is big
It is small.
13. a kind of device of business transmission, which is characterized in that in the SDN network applied to realization network interconnection, the SDN net
Network includes: software defined network SDN controller and at least one switching node；Described device includes:
Module is obtained, establishes parameter for obtain preset path；
Wherein, the preset path is to meet the transmission path of the QoS demand of business of the first kind；The preset path
Including at least one switching node；
The parameter of establishing includes: source address collection, destination address collection, source access node, purpose access node, qos parameter；It is described
Source address collection is the set that the source address for the business transmitted by the preset path is constituted；The destination address collection is passes through
State the set that the destination address of the business of preset path transmission is constituted；The source access node is that source network is linked into the SDN
The access node of network；The purpose access node is access node of the purpose network insertion to the SDN network；The QoS
Parameter includes the bandwidth of the business demand of the first kind, the time delay and the first kind of the business demand of the first kind
The priority of the business of type；
Processing module, for according to links all in the SDN network can bandwidth allocation, determination matched with the parameter of establishing
The preset path；Generate the first flow entry corresponding with the preset path；
Sending module, for issuing first flow entry to each switching node included in the preset path.
14. the device of business transmission according to claim 13, which is characterized in that the processing module is also used to:
First path information aggregate is obtained according to the parameter of establishing；First path is to access in the SDN network from the source
Node is to the path of the purpose access node；It include the exchange of all first paths in the first path information aggregate
Nodal information and link information；
At least one first shortest path is determined from the first path information aggregate；
Path bandwidth is selected from the first shortest path described at least one meets the first kind established in parameter
Business demand bandwidth requirement path as the preset path.
15. the device of business transmission according to claim 14, which is characterized in that the processing module is also used to:
When the industry for establishing the first kind in parameter is not satisfied in the path bandwidth of all first shortest paths
When the bandwidth requirement of business demand, following steps are executed:
S1, the SDN controller obtain i+1 path after deleting all i-th shortest paths in the i-th routing information set
Information aggregate；
S2, at least one i+1 shortest path is determined again from the i+1 routing information set；
S3, selected from i+1 shortest path described at least one one currently can bandwidth allocation meet described establish in parameter
Bandwidth requirement path as the preset path；
If the bandwidth demand established in parameter, the value of i is not satisfied in the bandwidth of all i+1 shortest paths
Add 1 and repeats above-mentioned steps S1 to S3；Wherein, the initial value of the i is 1；
If the N shortest path that N routing information collection is combined into sky or determines from the N routing information set is not able to satisfy
The QoS demand of the business of the first kind, then the preset path creation failure；
If the N shortest path determined from N routing information set meets the first kind established in parameter
The bandwidth requirement of business demand, then using the N shortest path as the preset path, wherein the value of the N be greater than
Equal to 2.
16. the device of business transmission according to claim 15, which is characterized in that the processing module is also used to:
When the first kind established in parameter is not satisfied in the N shortest path in the N routing information set
Business demand bandwidth requirement when；Following each step is executed to N shortest path:
Count in the N shortest path currently can bandwidth allocation be less than the first kind business demand each chain
Road；
Calculate each link it is current can bandwidth allocation and the first kind business demand bandwidth difference；
Calculate the product of the difference Yu path adjustment parameter；Wherein, the path adjustment parameter is variable, described for adjusting
Weight of the difference in link dilatation index；
All product accumulations of link described in the preset path establishment process get up to obtain the preset path to institute
State the dilatation exponential increment of link；By the SDN network, currently all preset paths tire out the dilatation exponential increment of the link
It adds up to obtain the dilatation index of the link；
Dilatation is carried out according to the link in network described in the link dilatation exponent pair.
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| CN201810864668.9A CN109274589B (en) | 2018-08-01 | 2018-08-01 | Service transmission method and device |
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| CN201810864668.9A CN109274589B (en) | 2018-08-01 | 2018-08-01 | Service transmission method and device |
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| CN115622948A (en) * | 2022-10-09 | 2023-01-17 | 深圳市智宇实业发展有限公司 | Data transmission method, device, equipment and storage medium based on service quality |
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