CN108092909A - Data flow control method, apparatus and system - Google Patents
Data flow control method, apparatus and system Download PDFInfo
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- CN108092909A CN108092909A CN201611041116.5A CN201611041116A CN108092909A CN 108092909 A CN108092909 A CN 108092909A CN 201611041116 A CN201611041116 A CN 201611041116A CN 108092909 A CN108092909 A CN 108092909A
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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
- H04L47/10—Flow control; Congestion control
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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
- H04L45/302—Route determination based on requested QoS
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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
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
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Abstract
The embodiment of the invention discloses a kind of data flow control method, apparatus and systems, and the described method includes obtain customer service quality requirement；Wherein, the customer service quality requirement includes at least the network layer constraints being transmitted to intended service data；According to the customer service quality requirement, it is determined whether there is the tunnel resource for meeting the customer service quality requirement；If have the tunnel resource for meeting the customer service quality requirement, path policy is generated based on the customer service quality requirement；The path policy is sent to corresponding equipment；Wherein, the path policy controls for the transmission of the intended service data.It is according to customer service quality requirement, the tunnel resource of selection and the path policy generated in the present embodiment, so subsequently can just selects to meet intended service data described in the tunnel transmission of customer service quality requirement.
Description
Technical field
The present invention relates to the communications field more particularly to a kind of data flow control method, apparatus and systems.
Background technology
In software defined network (Software Defined Network, SDN), usually have to the control of data traffic
Differentiated Services DiffServ modes and multiprotocol label switching MPLS traffic engineering TE modes.
The problems such as configuration task is heavy is usually had using DiffServ modes, and it is difficult to ensure that business service end to end
Quality.And DiffServ modes are a kind of control strategies based on single device, can not be transmitted using active and standby link, so as to
Often there is propagation delay time big or the problem of Transmission.
It using MPLS TE modes, can only be carried out data transmission according to data type or user gradation, difference can not be met
The individual needs of user.
The content of the invention
In view of this, an embodiment of the present invention is intended to provide a kind of data flow control method and system, used available for meeting
The individual needs at family.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
The embodiment of the present invention provides a kind of data flow control method, including：
Obtain customer service quality requirement；Wherein, the customer service quality requirement is included at least to intended service data
The network layer constraints being transmitted；
According to the customer service quality requirement, it is determined whether there is the tunnel money for meeting the customer service quality requirement
Source；
If have the tunnel resource for meeting the customer service quality requirement, generated based on the customer service quality requirement
Path policy；
The path policy is sent to corresponding equipment；Wherein, the path policy is for the intended service data
Transmission control.
Based on said program, the network layer constraints includes propagation delay time constraints, transmission bandwidth constraints
And at least one of packet loss constraints.
Based on said program, the method further includes：
If do not meet the tunnel resource of the customer service quality requirement, establishment meets the customer service quality need
The tunnel resource asked.
Based on said program,
If described when having the tunnel resource for meeting the customer service quality requirement, based on the customer service quality requirement
Path policy is generated, including：
Make Path selection correspondence, wherein, the Path selection correspondence includes：Meet described for business matter
The virtual process identifications of the Tunnel Identifier of the tunnel resource of amount demand and the intended service data；
It is described that the path policy is sent to corresponding equipment, including：
The path policy is sent to the network lateral edges PE equipment of the intended service data.
Based on said program, the method further includes：
The virtual process identifications of data to be transmitted bag are inquired about in the correspondence；
When inquiring the virtual process identifications in the correspondence, select corresponding with the virtual process identifications
Tunnel transmission described in data packet.
Based on said program, if described when having the tunnel resource for meeting the customer service quality requirement, based on the use
Family quality of service requirements generation path policy, including：
The quality of service requirements and assembly strategy are sent to data center's interconnection DCI gateways；
Wherein, the assembly strategy encapsulates corresponding institute for the DCI gateways in the header of the intended service data
State the specific fields of quality of service requirements；The specific fields meet the business matter for the selection of network lateral edges PE equipment
The tunnel resource of amount demand transmits the intended service data.
Based on said program, the method further includes：
The DCI gateways encapsulate the intended service data according to the assembly strategy；
The PE equipment detects the specific word of the data packet after the data packet of the intended service data is received
Section；
Selection and the matched tunnel of the specific fields transmit the data packet of the intended service data.
Based on said program, the method further includes：
The customer service quality requirement and the path policy are handed down to data center's interconnection DCI controllers；
The DCI controllers store the customer service quality requirement, and are handed down to DCI gateways.
Based on said program, the method further includes：
After the period of validity failure of the customer service quality requirement, recycling is corresponding with the customer service quality requirement
Tunnel resource.
Second aspect of the embodiment of the present invention provides a kind of data traffic control system, including：
Acquiring unit, for obtaining customer service quality requirement；Wherein, the customer service quality requirement include at least pair
The network layer constraints that intended service data are transmitted；
Determination unit, for according to the customer service quality requirement, it is determined whether have and meet the customer service quality
The tunnel resource of demand；
Generation unit, if during for there is the tunnel resource for meeting the customer service quality requirement, based on user's industry
Business quality requirement generation path policy；
Transmitting element, for the path policy to be sent to corresponding equipment；Wherein, the path policy is for described pre-
Determine the transmission control of business datum.
Based on said program, the network layer constraints includes propagation delay time constraints, transmission bandwidth constraints
And at least one of packet loss constraints.
Based on said program, described device further includes：
Creating unit, if during for not meeting the tunnel resource of the customer service quality requirement, creating described in meeting
The tunnel resource of customer service quality requirement.
Based on said program, the generation unit, specifically for the selection correspondence that Makes Path, wherein, the path
Selection correspondence includes：Meet the Tunnel Identifier of the tunnel resource for quality of service requirements and the intended service
The virtual process identifications of data；
The transmitting element, specifically for the path policy to be sent to the network lateral edges of the intended service data
PE equipment.
Based on said program, described device further includes：
Query unit, for inquiring about the virtual process identifications of data to be transmitted bag in the correspondence；
First selecting unit, for when inquiring the virtual process identifications in the correspondence, selection and institute
State data packet described in the corresponding tunnel transmission of virtual process identifications.
Based on said program, the generation unit, specifically for the quality of service requirements and assembly strategy are sent to
Data center interconnects DCI gateways；
Wherein, the assembly strategy encapsulates corresponding institute for the DCI gateways in the header of the intended service data
State the specific fields of quality of service requirements；The specific fields meet the business matter for the selection of network lateral edges PE equipment
The tunnel resource of amount demand transmits the intended service data.
Based on said program, described device further includes：
Encapsulation unit for the DCI gateways according to the assembly strategy, encapsulates the intended service data；
Detection unit, for the PE equipment after the data packet of the intended service data is received, described in detection
The specific fields of data packet；
Second selecting unit for selection and the matched tunnel of the specific fields, transmits the intended service data
Data packet.
Based on said program, described device further includes：
First issuance unit, it is mutual for the customer service quality requirement and the path policy to be handed down to data center
Join DCI controllers；
Storage unit stores the customer service quality requirement for the DCI controllers,
The customer service quality requirement is handed down to DCI gateways by the second issuance unit for the DCI controllers.
Based on said program, described device further includes：
Recovery unit, for after the period of validity of the customer service quality requirement fails, recycling and user's industry
The corresponding tunnel resource of business quality requirement.
The third aspect of the embodiment of the present invention provides a kind of data traffic control system, including wide area network WAN controllers, number
According to core contextual DCI controllers, DCI gateways and network lateral edges PE equipment：
The WAN controllers, for obtaining customer service quality requirement, wherein, the customer service quality requirement is at least
Including the network layer constraints being transmitted to intended service data；According to the customer service quality requirement, it is determined whether
There is the tunnel resource for meeting the customer service quality requirement；If there is the tunnel resource for meeting the customer service quality requirement
When, path policy is generated based on the customer service quality requirement；The path policy and the customer service demand are sent
To the DCI controllers；Wherein, the path policy controls for the transmission of the intended service data.
The DCI controllers, for receiving and according to the customer service demand, establishing customer service demand schedule, and incite somebody to action
The path policy is sent to the DCI gateways；
The DCI gateways, for encapsulating the data packet of the intended service according to path policy；Or directly by the path
Strategy is sent to the PE equipment；
The PE equipment, for the data packet according to the path policy transmission intended service data or according to institute
The specific fields for stating the data packet that DCI gateways Reseal transmit the data packet.
Data flow control method, the apparatus and system provided in the present embodiment, be according to customer service quality requirement,
The tunnel resource of selection and the path policy generated, it is so follow-up that the tunnel for meeting customer service quality requirement can just be selected to pass
The defeated intended service data.
Description of the drawings
Fig. 1 is an embodiment of the present invention provides a kind of flow diagrams of data flow control method；
Fig. 2A is a kind of schematic diagram of customer service quality requirement table provided in an embodiment of the present invention；
Fig. 2 B are the schematic diagram of another customer service quality requirement table provided in an embodiment of the present invention；
Fig. 3 is a kind of schematic diagram in the packet header of VxLAN data packets provided in an embodiment of the present invention；
Fig. 4 is the signal of the correspondence of a kind of VLAN ID provided in an embodiment of the present invention and Tunnel Identifier
Figure；
Fig. 5 is a kind of structure diagram of data traffic control device provided in an embodiment of the present invention；
Fig. 6 is a kind of structure diagram of data traffic control system provided in an embodiment of the present invention；
Fig. 7 is the structure diagram of another data traffic control system provided in an embodiment of the present invention；
Fig. 8 is the flow diagram of another data flow control method provided in an embodiment of the present invention；
Fig. 9 is the flow diagram of another data flow control method provided in an embodiment of the present invention.
Specific embodiment
Technical scheme is further elaborated below in conjunction with Figure of description and specific embodiment.
As shown in Figure 1, the present embodiment provides a kind of data flow control method, including：
Step S110：Obtain customer service quality requirement；Wherein, the customer service quality requirement is included at least to predetermined
The network layer constraints that business datum is transmitted；
Step S120：According to the customer service quality requirement, it is determined whether have and meet the customer service quality requirement
Tunnel resource；
Step S130：If have the tunnel resource for meeting the customer service quality requirement, based on the customer service matter
Amount demand generates path policy；
Step S140：The path policy is sent to corresponding equipment；Wherein, the path policy is used for the predetermined industry
The transmission control for data of being engaged in.
Method described in the present embodiment can be applied to the side in wide area network (Wire Area Network, WAN) controller
Method, or the method in the equipment that application is connected with WAN controllers.
The WAN controllers can utilize north orientation Application Programming Interface (Application Programming
Interface, API) from peripheral hardware or from human-computer interaction interface receive the customer service quality requirement.
The WAN controllers can pass through Simple Network Management Protocol (Simple Network Management
Protocol, SNMP) agreement is spaced acquisition the whole network resource situation on schedule, it is hereby achieved that the tunnel resource of the whole network
Behaviour in service.The WAN controllers can utilize the north orientation api interface that Collaborative Control layer is called to provide to obtain the customer service
Quality requirement.
The customer service quality requirement includes at least the network being transmitted to intended service data in the present embodiment
Layer constraints, in the present embodiment the customer service quality requirement can be limited to the constraints of network layer.Specifically such as, institute
State network layer constraints include propagation delay time constraints, transmission bandwidth constraints and at least one of.
The propagation delay time constraints may include occurrence or propagation delay time grade of propagation delay time etc..The conveyor
Wide constraints may also include required lowest-bandwidth value or bandwidth class etc..The packet loss constraints includes maximum allowable
Packet loss or packet loss grade.
In the present embodiment after the customer service quality requirement is received, it may be desirable to determine whether to meet business
The available tunnel resource of demand, if so, then represent that current tunnel resource can meet the customer service quality requirement, into
And corresponding path policy can be generated, to facilitate the forwarding control of the corresponding intended service data of the user's quality of service requirements
System.
In some embodiments, the method further includes：
If do not meet the tunnel resource of the customer service quality requirement, establishment meets the customer service quality need
The tunnel resource asked.
If finding no corresponding tunnel resource in the present embodiment, re-create one and meet the customer service matter
The tunnel resource of amount demand.
In some embodiments, the step S130 may include：
Make Path selection correspondence, wherein, the Path selection correspondence includes：Meet described for business matter
The virtual process identifications of the Tunnel Identifier of the tunnel resource of amount demand and the intended service data；
The step S140 may include：
The path policy is sent to the network lateral edges PE equipment of the intended service data.Institute in the present embodiment
PE equipment is stated to carry out the equipment of data packet forwarding.The path policy can be controlled directly by the WAN in the present embodiment
Device or other target nodes.In the present embodiment corresponding tunnel resource has been determined in step S120, it can be by predetermined industry
The virtual process identifications (Virtual Network Identity, VNI) and Tunnel Identifier for data of being engaged in establish correspondence, the tunnel
Road is identified as the mark in the tunnel for transmitting the intended service data, which is the quality of service for meeting the user's business datum
The tunnel of demand.The Tunnel Identifier, can be such as tunnel title or tunnel ID.The correspondence is transmitted to PE equipment, so
After PE equipment receives corresponding data packet, then can predetermined industry described in corresponding tunnel transmission be selected according to correspondence
The data packet for data of being engaged in, so that it is guaranteed that the transmission of the intended service data meets user personality demand.
For example, the method further includes：The virtual process identifications of data to be transmitted bag are inquired about in the correspondence；When
When inquiring the virtual process identifications in the correspondence, tunnel transmission corresponding with the virtual process identifications is selected
The data packet.The executive agent of the step can be PE equipment.
In some embodiments, the step S130 may include：
The quality of service requirements and assembly strategy are sent to data center's interconnection DCI gateways；
Wherein, the assembly strategy encapsulates corresponding institute for the DCI gateways in the header of the intended service data
State the specific fields of quality of service requirements；The specific fields meet the business matter for the selection of network lateral edges PE equipment
The tunnel resource of amount demand transmits the intended service data.
In some embodiments, the method further includes：
The DCI gateways encapsulate the intended service data according to the assembly strategy；
The PE equipment detects the specific word of the data packet after the data packet of the intended service data is received
Section；
Selection and the matched tunnel of the specific fields transmit the data packet of the intended service data.
The DCI gateways Reseal the intended service data before transmission packet, using assembly strategy, for institute
State the encapsulation header that intended service data increase VNI.Using the reserved field of the encapsulation header as specific fields.According to described specific
Field PE equipment is it is known that corresponding customer service quality requirement, so as to select described in matching tunnel carries out
The transmission of data packet.
In some embodiments, the method further includes：
The customer service quality requirement and the path policy are handed down to data center's interconnection DCI controllers；
The DCI controllers store the customer service quality requirement, and are handed down to DCI gateways.
The customer service quality requirement in the present embodiment, is stored in DCI controllers, if customer service quality requirement
Changed, then the information that the DCI controls will update storage.
The DCI gateways will get the customer service quality requirement from DCI controllers in the present embodiment, and
It is converted into corresponding specific fields.
Specifically such as, the DCI controllers maintenance includes the customer service quality of one or more customer service quality requirements
Demand schedule.
A kind of empty table for not including customer service quality requirement information established as shown in Figure 2 A for the DCI controllers；
Fig. 2 B are a kind of nonempty list for including customer service quality requirement information that the DCI controllers are established.In Fig. 2A and Fig. 2 B
Shown tenant id is user identity information, is used to indicate user.In the business number that the VNI shown in Fig. 2A and Fig. 2 B is the user
According to the VLAN ID of the virtual LAN at place.Default level is user gradation.
The packet header for being as shown in Figure 3 a kind of virtual LAN VXLAN provided in this implementation.Wherein, field P, T, B and
L is the part of the composition of specific fields.Wherein, the P may be used to indicate according to user gradation transmission packet；The T tables
Show according to delay constraint condition transmission packet；The B is according to bandwidth constraint condition transmission packet；The L is according to losing
Bag rate constraints transmission packet.
Fig. 4 is a kind of schematic diagram of Path selection correspondence provided in this embodiment；VNI and tunnel are stored in Fig. 4
Road identifies (Tunnel Identity, TE ID).The Path selection correspondence may be simply referred to as VIN-ID entries, if based on institute
The transmission that Path selection correspondence carries out intended service data is stated, then needs the VNI-ID entries being transmitted to transmission data
The equipment of bag, for example, being handed down to PE equipment.
In some embodiments, the method further includes：
Configure the period of validity of the customer service quality requirement；
After failing the period of validity, tunnel resource corresponding with the customer service quality requirement is recycled.
The executive agent of the step can be WLAN controllers, withdraw some in time available for WAN controllers and be unsatisfactory for user
The tunnel resource of quality of service requirements, so as to promote the effective rate of utilization of resource.
As shown in figure 5, the present embodiment provides a kind of data traffic control device, including：
Acquiring unit 110, for obtaining customer service quality requirement；Wherein, the customer service quality requirement at least wraps
Include the network layer constraints being transmitted to intended service data；
Determination unit 120, for according to the customer service quality requirement, it is determined whether have and meet the customer service matter
The tunnel resource of amount demand；
Generation unit 130, if during for there is the tunnel resource for meeting the customer service quality requirement, based on the user
Quality of service requirements generates path policy；
Transmitting element 140, for the path policy to be sent to corresponding equipment；Wherein, the path policy is used for institute
State the transmission control of intended service data.
The present embodiment described device can be integrally located in a communication node, and the unit of described device can also be distinguished
In multiple communication nodes.
The acquiring unit 110, the determination unit 120, the generation unit 130 can all correspond to processor or processing
Circuit.The processor may include central processing unit, digital processing unit, application processor, programmable array or microprocessor.Institute
It can be application-specific integrated circuit to state process circuit.
The transmitting element 140 corresponds to transmission interface, can be used in sending the path policy to other correspondence equipment.
The processor or process circuit can realize above-mentioned function by performing predetermined code,
In some embodiments, the network layer constraints includes propagation delay time constraints, transmission bandwidth constraint item
At least one of part and packet loss constraints.Here the associated description of each constraints may refer to previous embodiment
Corresponding part.
In some embodiments, described device further includes：
Creating unit, if during for not meeting the tunnel resource of the customer service quality requirement, creating described in meeting
The tunnel resource of customer service quality requirement.
Creating unit described in the present embodiment may correspond to processor or process circuit, creates a tunnel and assigns the tunnel
Road Tunnel Identifier.
In some embodiments, the generation unit 130, specifically for the selection correspondence that Makes Path, wherein, it is described
Path selection correspondence includes：Meet the Tunnel Identifier of the tunnel resource for quality of service requirements and described predetermined
The virtual process identifications of business datum；The transmitting element 140, specifically for the path policy is sent to the predetermined industry
The network lateral edges PE equipment for data of being engaged in.
The path policy is sent to PE equipment in the present embodiment.
In some embodiments, described device further includes：
Query unit, for inquiring about the virtual process identifications of data to be transmitted bag in the correspondence；
First selecting unit, for when inquiring the virtual virtual process identifications in the correspondence, selecting
Data packet described in tunnel transmission corresponding with the virtual process identifications.
The query unit and the first selecting unit can be located in the PE equipment, can also correspond to processor
Or process circuit.
In some embodiments, the generation unit 130, specifically for the quality of service requirements and assembly strategy are sent out
Give data center's interconnection DCI gateways；Wherein, the assembly strategy, for the DCI gateways in the intended service data
The specific fields of the corresponding quality of service requirements of encapsulation in header；The specific fields are selected for network lateral edges PE equipment
Select the tunnel resource transmission intended service data for meeting the quality of service requirements.
In other embodiments, described device further includes：
Encapsulation unit for the DCI gateways according to the assembly strategy, encapsulates the intended service data；
Detection unit, for the PE equipment after the data packet of the intended service data is received, described in detection
The specific fields of data packet；
Second selecting unit for selection and the matched tunnel of the specific fields, transmits the intended service data
Data packet.
The encapsulation unit can be located in the DCI gateways；The detection unit and second selecting unit can be located at
In the PE equipment.
In other embodiments, described device further includes：First issuance unit, for by the customer service quality
Demand and the path policy are handed down to data center's interconnection DCI controllers；Storage unit stores for the DCI controllers
The customer service quality requirement, the second issuance unit issue the customer service quality requirement for the DCI controllers
Give DCI gateways.
Here the first issuance unit and the second issuance unit can all correspond to communication interface, which is used to set to other
Preparation is delivered letters breath.The storage unit may correspond to storage medium, available for storing the customer service quality requirement.
In some embodiments, described device further includes：Recovery unit, for having in the customer service quality requirement
After imitating time limit failure, tunnel resource corresponding with the customer service quality requirement is recycled.
As shown in fig. 6, the present embodiment provides a kind of data traffic control system, including wide area network WAN controllers 210, number
According to core contextual DCI controllers 220, DCI gateways 230 and network lateral edges PE equipment 240：
The WAN controllers 210, for obtaining customer service quality requirement, wherein, the customer service quality requirement is extremely
Few network layer constraints for including being transmitted intended service data；According to the customer service quality requirement, determine be
It is no to have the tunnel resource for meeting the customer service quality requirement；If there is the tunnel resource for meeting the customer service quality requirement
When, path policy is generated based on the customer service quality requirement；The path policy and the customer service demand are sent
To the DCI controllers；Wherein, the path policy controls for the transmission of the intended service data.
The DCI controllers 220, for receiving and according to the customer service demand, establishing customer service demand schedule, and
The path policy is sent to the DCI gateways；
The DCI gateways 230, for encapsulating the data packet of the intended service according to path policy；Or directly by described in
Path policy is sent to the PE equipment；
The PE equipment 240, for data packet that the intended service data are sent according to the path policy or according to
The specific fields for the data packet that the DCI gateways Reseal transmit the data packet.
Several specific examples are provided below in conjunction with above-described embodiment：
Example one：
Include as shown in fig. 7, this example provides a kind of communication system：
Collaborative Control layer, for receiving customer service quality requirement；
WAN controllers are connected with the Collaborative Control layer, for receiving the customer service matter from the Collaborative Control layer
Amount demand, and gather the tunnel resource behaviour in service of whole network；According to customer service quality requirement, it is determined whether there is satisfaction to use
The tunnel resource of family quality of service requirements, if without corresponding resource just by the configuration of link, generation meets user's industry
The tunnel of business demand simultaneously generates path policy.Here path policy may include to create the Tunnel Identifier in corresponding tunnel with it is described
The correspondence of the VNI of the intended service data of customer service quality requirement, is handed down to PE equipment, facilitates PE equipment according to
Correspondence selects intended service data described in suitable tunnel transmission.Alternatively, by the customer service demand, figure is sent to
In DCI controllers, DCI controllers store the customer service quality requirement, customer service quality requirement table are formed, by correspondence
Assembly strategy be sent to DCI gateways, DCI gateways encapsulate the data packet of intended service data according to the assembly strategy.PE is set
Standby that the specific fields in data packet are Resealed according to DCI gateways after the data packet is received, selection meets the use
The data packet of intended service data described in the tunnel transmission of family quality of service requirements meets user's so as to can also equally realize
Individual character transmission demand.Here the equipment that edge PE equipment is commonly connected LAN and wide area network.For example, connection urban network and
The gateway device of backbone network.
Example two:
The communication system that this example is provided based on example one, provides a kind of information processing method, including：
1st, the starting stage
For the customer flow across data center, a customer service quality requirement table is safeguarded on DCI controllers.Initially
Stage safeguards a default priority according to user gradation for each user, and identity user flow is in traditional QoS of wide area network etc.
Grade.
2nd, customer service configuration phase
When user has specific quality requirement to business, by Collaborative Control layer configuration service quality requirement, and pass through
North orientation api interface issues user configuration quality of service requirements information (including time delay, bandwidth, packet loss to WAN controller
Deng).User needs to configure the term of validity of quality of service requirements simultaneously, facilitates subsequent recovery tunnel information.
3rd, controller cooperative working process
Step 1：After WAN controller receives user configuration information, existing tunnel resource is inquired about with the presence or absence of meeting use
The tunnel of family constraints；
Step 2：When the tunnel for meeting business demand is not present in network, judged whether by network resource usage situation
A satisfactory tunnel resource can be generated for user, if can not generate, return to error message to user.Otherwise, generate
New routing information is handed down to wide area network forwarding unit by tunnel resource by PCEP agreements；Pass through network configuration protocol simultaneously
(Netconf) interface issues forwarding strategy, i.e. VNI-ID table clauses, and structure can be as shown in Figure 4.
Step 3：When there is the tunnel for meeting business demand in network, handled there are two types of scheme.
Scheme one：Based on VxLAN heading extended field routings
WAN controller does not process, and when message reaches forwarding unit, forwarding unit is checked in VxLAN headings
Customer service quality requirement extended field, and the traffic engineering tunnel for meeting business demand is selected to be forwarded to；Under this mode, forwarding unit
The list item for needing the VNI-TE tunnels safeguarded is less, suitable for the flow tuning based on user class.
Scheme two：Based on VNI and tunnel ID routings
WAN controller is found satisfactory traffic engineering tunnel resource, and VNI and the corresponding of tunnel is closed by inquiry
System, is issued to forwarding unit, forwarding unit is based on the corresponding tunnel ID of VNI information inquiries in message and forwards.Under this mode,
Processing business quality requirement is not required in forwarding unit, is directly based upon VNI information and is forwarded to, suitable for the stream based on tenant's business
Measure tuning.
Step 4：When generating corresponding tunnel there are the tunnel resource of meet demand in network or by WAN controller
After resource, WAN controller notice collaboration layer coordinates measurement, collaboration layer issues customer service quality requirement information and is controlled to DCI
Device.Start timer simultaneously, after customer service demand expires, remove newly built tunnels and delete the VNI-ID tables in forwarding unit
Item (if present).
Step 5：After DCI controllers receive the customer service demand information that collaboration layer issues, modification customer service quality needs
Seek table.
Step 6:Customer service quality requirement is handed down to DCI gateways by DCI controllers, and DCI gateways are mutual as data center
The quality of service requirements of user is converted into corresponding rank and inserted in the heading of VxLAN by the VTEP nodes in connection tunnel, such as Fig. 3
It is shown.
(1)P：User's default priority
P represents the priority of the user, if 1, represents to use traditional QoS mechanism according to the QoS grades of user；If
For 0, represent that the field does not come into force.
3 bits represent 8 grades of User Priorities, corresponding user afterwards.
Such as：7 represent highest priorities, and 0 is minimum, and so on.
(2) T represents time delay
T represents whether user sets delay requirement, if 1, represents that user has delay requirement；If 0, the user is represented
To time delay no requirement (NR)；3 bits represent 8 grades of time delay grades afterwards.
Such as：7 represent 0-10ms；6 represent 10ms-20ms, and 5 represent 20ms-50ms, and so on, number is bigger to be represented to use
Family is to delay requirement higher.
(3) B represents bandwidth
B represents whether user sets bandwidth requirement, if 1, represents that user has bandwidth requirement；If 0, the user is represented
To bandwidth no requirement (NR), rear 3 bit represents 8 grades of bandwidth class
Such as：0 represents 0-10MB；1 represents 10MB-20MB, and 2 represent 20MB-50MB, and so on, number is bigger to be represented to use
Family is to bandwidth requirement higher.
(4) L represents packet loss
L represents whether user is set and loses example's requirement, if 1, represents that user has packet loss requirement；For 0, the use is represented
Family can represent 8 grades of packet loss grades to packet loss no requirement (NR), rear 3 bit.
Such as：7 represent requirement not packet loss, and 6 represent that packet loss is less than a ten thousandth, and 5 represent that packet loss is less than 3/10000ths, with
This analogizes, and the bigger expression the user of number requires packet loss stringenter.
Note：It comes into force when P fields and T, B, L field difference, tri- fields of T, B, L can come into force simultaneously.
4th, tunnel repeating process
After wide area network edge PE equipment receives the VxLAN messages from DCI gateways, the extended field on head is checked, if P
Field comes into force, and is forwarded to based on traditional QoS mechanism.Otherwise, if T or B or L field come into force, whether inquiry VNI can be
Respective items are found in VNI-ID tables, forwarding is completed if there is being based on tunnel ID；If not provided, check the extension in VxLAN messages
Field simultaneously matches existing tunnel resource, and the tunnel that selection meets condition is forwarded to.
5th, business demand expire and or user's manual removal
When customer service demand expires, Collaborative Control layer is connect by the north orientation API of DCI controllers and WAN controller
Corresponding customer service quality requirement table is changed in the request that mouth issuing service demand is removed, wherein DCI controllers, and according to original
Default priority encapsulated message, corresponding forwarding strategy is (including recycling newly-built tunnel on WAN controller modification forwarding unit
VNI-ID tables etc. are deleted in road).Meanwhile user can call controller north when business demand is not yet due by Collaborative Control layer
The request removed to api interface issuing service demand.
Example three：
As shown in figure 8, this example also provides a kind of Restriction condition treat method, including：
Step S1：Judge whether to receive constraints input by user, if entering step S2, if otherwise terminating to flow
Journey.Here constraints may correspond to foregoing customer service quality requirement.
Step S2：Collaborative Control layer issues constraints to WAN controllers by north orientation API.
Step S3：WAN controllers judge whether the tunnel resource for meeting condition, if otherwise entering step S4, if
Then enter step S5：
Step S4：Judge whether can to generate the tunnel resource of the condition of satisfaction, if then entering step S5, if otherwise into step
Rapid S11：
Step S5：Path policy is generated and issued；
Step S6：Configuration distributing is to DCI controllers.Here configuration can be the constraints or the customer service matter
The configuration information of amount demand issues；
Step S7：DCI controllers change the customer service quality requirement table of its storage；
Step S8：DCI controllers issue corresponding constraints to DCI gateways；
Step S9：DCI gateways issue corresponding constraints to PE equipment；
Step S10：The VxLAN messages that DCI gateways encapsulate are forwarded to PE equipment.
Step S11：User is asked to change constraints.
PE equipment is a kind of optional below in conjunction with shown in Fig. 9, providing there are many processing method when data packet is forwarded
Method, including：
Step S21：PE equipment receives business datum；
Step S22：Judge whether VNI-ID there are respective items, if entering step S24；If otherwise enter step S23；
Step S23：The specific fields of matching VxLAN messages are forwarded to.
Step S24：VNI in matching VxLAN messages is forwarded to.Here matching is the respective items with foregoing VNI-ID
It is forwarded to.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.Apparatus embodiments described above are only schematical, for example, the division of the unit, is only
A kind of division of logic function can have other dividing mode, such as in actual implementation：Multiple units or component can combine or
It is desirably integrated into another system or some features can be ignored or does not perform.In addition, shown or discussed each composition portion
Point mutual coupling or direct-coupling or communication connection can be the INDIRECT COUPLINGs by some interfaces, equipment or unit
Or communication connection, can be electrical, mechanical or other forms.
The above-mentioned unit illustrated as separating component can be or may not be physically separate, be shown as unit
The component shown can be or may not be physical location, you can be located at a place, can also be distributed to multiple network lists
In member；Part or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a processing module, also may be used
To be each unit individually as a unit, can also two or more units integrate in a unit；It is above-mentioned
The form that hardware had both may be employed in integrated unit is realized, can also be realized in the form of hardware adds SFU software functional unit.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
The relevant hardware of program instruction is completed, and foregoing program can be stored in a computer read/write memory medium, the program
Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：It is movable storage device, read-only
Memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or
The various media that can store program code such as person's CD.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in change or replacement, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (19)
1. a kind of data flow control method, which is characterized in that including：
Obtain customer service quality requirement；Wherein, the customer service quality requirement, which includes at least, carries out intended service data
The network layer constraints of transmission；
According to the customer service quality requirement, it is determined whether there is the tunnel resource for meeting the customer service quality requirement；
If have the tunnel resource for meeting the customer service quality requirement, path is generated based on the customer service quality requirement
Strategy；
The path policy is sent to corresponding equipment；Wherein, the path policy is used for the transmission of the intended service data
Control.
2. according to the method described in claim 1, it is characterized in that,
The network layer constraints is included in propagation delay time constraints, transmission bandwidth constraints and packet loss constraints
At least one of.
3. according to the method described in claim 1, it is characterized in that,
The method further includes：
If do not meet the tunnel resource of the customer service quality requirement, establishment meets the customer service quality requirement
Tunnel resource.
4. method according to any one of claims 1 to 3, which is characterized in that
If described when having the tunnel resource for meeting the customer service quality requirement, generated based on the customer service quality requirement
Path policy, including：
Make Path selection correspondence, wherein, the Path selection correspondence includes：Meet described for quality of service need
The virtual process identifications of the Tunnel Identifier for the tunnel resource asked and the intended service data；
It is described that the path policy is sent to corresponding equipment, including：
The path policy is sent to the network lateral edges PE equipment of the intended service data.
5. according to the method described in claim 4, it is characterized in that,
The method further includes：
The virtual process identifications of data to be transmitted bag are inquired about in the correspondence；
When inquiring the virtual process identifications in the correspondence, tunnel corresponding with the virtual process identifications is selected
Transmit the data packet in road.
6. method according to any one of claims 1 to 3, which is characterized in that
If described when having the tunnel resource for meeting the customer service quality requirement, generated based on the customer service quality requirement
Path policy, including：
The quality of service requirements and assembly strategy are sent to data center's interconnection DCI gateways；
Wherein, the assembly strategy encapsulates the corresponding industry for the DCI gateways in the header of the intended service data
The specific fields of business quality requirement；The specific fields meet the quality of service need for the selection of network lateral edges PE equipment
The tunnel resource asked transmits the intended service data.
7. according to the method described in claim 6, it is characterized in that,
The method further includes：
The DCI gateways encapsulate the intended service data according to the assembly strategy；
The PE equipment detects the specific fields of the data packet after the data packet of the intended service data is received；
Selection and the matched tunnel of the specific fields transmit the data packet of the intended service data.
8. method according to any one of claims 1 to 3, which is characterized in that
The method further includes：
The customer service quality requirement and the path policy are handed down to data center's interconnection DCI controllers；
The DCI controllers store the customer service quality requirement, and are handed down to DCI gateways.
9. method according to any one of claims 1 to 3, which is characterized in that
The method further includes：
After the period of validity failure of the customer service quality requirement, tunnel corresponding with the customer service quality requirement is recycled
Road resource.
10. a kind of data traffic control device, which is characterized in that including：
Acquiring unit, for obtaining customer service quality requirement；Wherein, the customer service quality requirement is included at least to predetermined
The network layer constraints that business datum is transmitted；
Determination unit, for according to the customer service quality requirement, it is determined whether have and meet the customer service quality requirement
Tunnel resource；
Generation unit, if during for there is the tunnel resource for meeting the customer service quality requirement, based on the customer service matter
Amount demand generates path policy；
Transmitting element, for the path policy to be sent to corresponding equipment；Wherein, the path policy is used for the predetermined industry
The transmission control for data of being engaged in.
11. device according to claim 10, which is characterized in that
The network layer constraints is included in propagation delay time constraints, transmission bandwidth constraints and packet loss constraints
At least one of.
12. device according to claim 10, which is characterized in that
Described device further includes：
Creating unit, if during for not meeting the tunnel resource of the customer service quality requirement, establishment meets the user
The tunnel resource of quality of service requirements.
13. according to claim 10 to 12 any one of them device, which is characterized in that
The generation unit, specifically for the selection correspondence that Makes Path, wherein, the Path selection correspondence includes：
Meet described for the Tunnel Identifier of tunnel resource of quality of service requirements and the virtual network mark of the intended service data
Know；
The transmitting element is set specifically for the network lateral edges PE that the path policy is sent to the intended service data
It is standby.
14. device according to claim 4, which is characterized in that
Described device further includes：
Query unit, for inquiring about the virtual process identifications of data to be transmitted bag in the correspondence；
First selecting unit, for when inquiring the virtual process identifications in the correspondence, selecting and the void
Intend data packet described in the corresponding tunnel transmission of network identity.
15. according to claim 10 to 12 any one of them device, which is characterized in that
The generation unit, specifically for the quality of service requirements and assembly strategy are sent to data center's interconnection DCI nets
It closes；
Wherein, the assembly strategy encapsulates the corresponding industry for the DCI gateways in the header of the intended service data
The specific fields of business quality requirement；The specific fields meet the quality of service need for the selection of network lateral edges PE equipment
The tunnel resource asked transmits the intended service data.
16. device according to claim 15, which is characterized in that
Described device further includes：
Encapsulation unit for the DCI gateways according to the assembly strategy, encapsulates the intended service data；
Detection unit for the PE equipment after the data packet of the intended service data is received, detects the data
The specific fields of bag；
Second selecting unit, for select with the matched tunnel of the specific fields, transmit the data of the intended service data
Bag.
17. according to claim 10 to 12 any one of them device, which is characterized in that
Described device further includes：
First issuance unit, for the customer service quality requirement and the path policy to be handed down to data center's interconnection
DCI controllers；
Storage unit stores the customer service quality requirement for the DCI controllers,
The customer service quality requirement is handed down to DCI gateways by the second issuance unit for the DCI controllers.
18. according to claim 10 to 12 any one of them device, which is characterized in that
Described device further includes：
Recovery unit, for after the period of validity of the customer service quality requirement fails, recycling and the customer service matter
The corresponding tunnel resource of amount demand.
19. a kind of data traffic control system, which is characterized in that including wide area network WAN controllers, data center's association DCI controls
Device processed, DCI gateways and network lateral edges PE equipment：
The WAN controllers, for obtaining customer service quality requirement, wherein, the customer service quality requirement includes at least
The network layer constraints that intended service data are transmitted；According to the customer service quality requirement, it is determined whether have full
The tunnel resource of the foot customer service quality requirement；If have the tunnel resource for meeting the customer service quality requirement, base
Path policy is generated in the customer service quality requirement；The path policy and the customer service demand are sent to described
DCI controllers；Wherein, the path policy controls for the transmission of the intended service data；
The DCI controllers for receiving and according to the customer service demand, establish customer service demand schedule, and will described in
Path policy is sent to the DCI gateways；
The DCI gateways, for encapsulating the data packet of the intended service according to path policy；Or directly by the path policy
It is sent to the PE equipment；
The PE equipment, for the data packet according to the path policy transmission intended service data or according to the DCI
The specific fields for the data packet that gateway Reseals transmit the data packet.
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| CN110661632A (en) * | 2018-06-28 | 2020-01-07 | 中兴通讯股份有限公司 | Tunnel processing method, network device and storage medium |
| CN110830355A (en) * | 2018-08-09 | 2020-02-21 | 中国移动通信有限公司研究院 | Data forwarding method and network equipment |
| CN111669337A (en) * | 2020-04-22 | 2020-09-15 | 视联动力信息技术股份有限公司 | Flow control method and device |
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| CN114024917A (en) * | 2020-07-15 | 2022-02-08 | 中国移动通信集团终端有限公司 | Method, device, equipment and storage medium for guaranteeing internet service bandwidth |
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