CN110198259B - Data transmission method, device and equipment - Google Patents
Data transmission method, device and equipment Download PDFInfo
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- CN110198259B CN110198259B CN201910184813.3A CN201910184813A CN110198259B CN 110198259 B CN110198259 B CN 110198259B CN 201910184813 A CN201910184813 A CN 201910184813A CN 110198259 B CN110198259 B CN 110198259B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
- H04L41/5041—Network service management, e.g. ensuring proper service fulfilment according to agreements characterised by the time relationship between creation and deployment of a service
- H04L41/5054—Automatic deployment of services triggered by the service manager, e.g. service implementation by automatic configuration of network components
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- H—ELECTRICITY
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
- H04L43/0864—Round trip delays
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- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/121—Shortest path evaluation by minimising delays
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- H04L45/24—Multipath
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/123—Evaluation of link metrics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The invention discloses a data transmission method, a device and equipment, wherein the method comprises the following steps: acquiring a service type storage file; acquiring data request information; extracting locally supported transmission service types according to the data request information; determining a target virtual transmission line matched with the transmission service type by the service type storage file; the target virtual transmission line is a transmission line formed by a first gateway corresponding to a local area and a second gateway virtually connected with the first gateway; and transmitting the data request information along the target virtual transmission line. The invention can enable the data request information sent by the terminal equipment to meet the transmission service requirement of the user according to the matched transmission service type.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method, apparatus, and device.
Background
With the improvement of the informatization degree of large enterprises, enterprises with certain capital and technical strength need to invest in construction and independently maintain a special enterprise backbone network, and the mutual transmission of enterprise business data among branch departments in different regions is guaranteed; and corresponding services are provided according to the actual requirements of different services in the aspects of safety, reliability, instantaneity and the like.
Most of the existing enterprise backbone network transmission process belongs to a parallel line transmission scene; for example, in the process of leasing and constructing a cross-domain long-distance transmission line, a plurality of lines with different bottom-layer physical optical cable path directions are usually used, and an equal-cost multi-path route ECMP is generally used to realize parallel data transmission; however, in the data transmission scenario, the network transmission delay between the terminal and the terminal is not controllable, and the transmission time requirement of the user cannot be met; in the prior art, there is a transmission path for controlling network traffic through a path Metric; however, it is difficult to adjust the Metric value, and often, the modification of one link affects multiple routes, which is difficult to grasp and weigh.
Therefore, it is necessary to provide a technical solution capable of optimizing data transmission, so as to implement that network transmission delay and path can be controlled and meet user requirements.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a data transmission method, a device and equipment, and specifically comprises the following steps:
in one aspect, a data transmission method is provided, and the method includes:
acquiring a service type storage file, wherein the service type storage file comprises all virtual transmission lines in a preset area range;
acquiring data request information;
extracting locally supported transmission service types according to the data request information;
determining a target virtual transmission line matched with the transmission service type by the service type storage file; the target virtual transmission line is a transmission line formed by a first gateway corresponding to a local area and a second gateway virtually connected with the first gateway;
and transmitting the data request information along the target virtual transmission line.
Another aspect provides a data transmission apparatus, including:
the device comprises a storage file acquisition module, a storage management module and a service type storage module, wherein the storage file acquisition module is used for acquiring a service type storage file which comprises all virtual transmission lines in a preset area range;
the request information acquisition module is used for acquiring data request information;
the transmission service type obtaining module is used for extracting locally supported transmission service types according to the data request information;
the target virtual circuit determining module is used for determining a target virtual transmission circuit matched with the transmission service type according to the service type storage file; the target virtual transmission line is a transmission line formed by a first gateway corresponding to a local area and a second gateway virtually connected with the first gateway;
and the data information transmission module is used for transmitting the data request information along the target virtual transmission line.
Another aspect provides an apparatus comprising a processor and a memory, the memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions, the at least one instruction, the at least one program, set of codes, or set of instructions being loaded and executed by the processor to implement the data transfer method according to the above aspect.
The data transmission method, the device and the equipment provided by the invention have the beneficial effects that:
when data request information is acquired, locally supported transmission service types can be extracted according to the data request information; further determining a target virtual transmission line matched with the transmission service type by the service type storage file; the service type storage file comprises all virtual transmission lines in a preset area range; the target virtual transmission line is a transmission line formed by a first gateway corresponding to a local area and a second gateway virtually connected with the first gateway; thereby causing the data request information to be transmitted along the target virtual transmission line. The invention can reasonably transmit the data request information sent by the terminal equipment along the corresponding virtual transmission route according to the matched transmission service type, thereby meeting the transmission service requirements of users.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions and advantages of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1(a) is a logical network topology diagram of an implementation environment provided by an embodiment of the present specification;
FIG. 1(b) is a schematic diagram of an end-to-end path in an implementation environment provided by an embodiment of the present disclosure;
FIG. 2 is a flow chart of a data transmission method provided by an embodiment of the present specification;
fig. 3 is a flowchart for establishing a first service type storage table according to an embodiment of the present specification;
fig. 4 is a flowchart of a step of detecting a first transmission duration corresponding to the first virtual transmission line according to an embodiment of the present specification;
FIG. 5 is a schematic diagram of a system environment provided by an illustrative embodiment;
fig. 6 is a flowchart of steps included before the step of calculating the first transmission duration according to the fourth time and the first time according to the embodiment of the present specification;
fig. 7 is a flow chart of a probing simulation of a first simulation gateway pair provided by an embodiment of the present specification;
fig. 8 is a flow chart of a probing simulation of a second simulation gateway pair provided by an embodiment of the present description;
fig. 9 is a block diagram of a data transmission apparatus according to an embodiment of the present disclosure;
fig. 10 is a schematic diagram of a data transmission system provided in an embodiment of the present specification;
fig. 11 is a schematic diagram of a data transmission device provided in an embodiment of the present specification.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The specification provides a technical scheme for optimizing data transmission, belongs to a fine routing scheme for SDN cross-domain delay, and can solve the problem of parallel transmission delay in a link aggregation scene. Specifically, a delay detection module is deployed between gateways in different regions, and constructed detection messages are used for performing real-time end-to-end delay detection on parallel lines, so that data request information is sent to a specified gateway for data transmission, network delay is stable and controllable, and the delay requirement of a user on data transmission is met.
Specifically, the logic architecture corresponding to the present technical solution is shown in fig. 1(a) and 1 (b); fig. 1(a) is a logical network topology diagram provided in this embodiment; fig. 1(b) is a schematic diagram of an end-to-end path provided in this embodiment.
In detail, an embodiment of the present specification provides a data transmission method based on the above logic architecture, as shown in fig. 2, the method includes:
s202, acquiring a service type storage file, wherein the service type storage file comprises all virtual transmission lines in a preset area range;
the virtual transmission line can be regarded as a data transmission line of two end gateways in a cross-domain scene; there may be multiple virtual transmission lines in parallel between the two gateways. Wherein the gateway may belong to a backbone network gateway.
S204, acquiring data request information;
s206, extracting locally supported transmission service types according to the data request information;
specifically, when the first terminal acquires data request information generated based on user operation, the first terminal can locally extract a transmission service type supported by the first terminal.
Wherein, the transmission of the data request information belongs to cross-region transmission; specifically, the sender of the data request information may be a first terminal of enterprise a at the geographic location L1, and the receiver of the data request information may be a second terminal of enterprise a at the geographic location L2; the first terminal and the second terminal are communicated through a cloud networking service product; in detail, the transmission service types determined by the cloud networking service products are communicated; the transmission service type can be regarded as cooperation service information of the enterprise A and a cloud networking service product, and is similar to a package service type signed with a communication operator and a terminal.
If the preset area range is selected cities, the region can be understood as a city, such as Beijing to Shanghai; in the case where the predetermined area range is a selected city, the region may be understood as an area within the city, such as a sunny area of beijing to a chang-ping area of beijing.
S208, determining a target virtual transmission line matched with the transmission service type by the service type storage file; the target virtual transmission line is a transmission line formed by a first gateway corresponding to a local area and a second gateway virtually connected with the first gateway;
before the transmission service type supported by the first terminal is not determined, the first gateway and the second gateway can support a plurality of feasible transmission service types. After the transmission service type supported by the first terminal is determined, the transmission service type supported by the first terminal corresponds to the only transmission service type supported by the first gateway and the second gateway.
Specifically, the first gateway is a gateway for performing communication connection with the first terminal, and is a sending interface for performing cross-domain transmission on the data request information based on a service requirement of a user; the second gateway is a gateway which is determined based on the transmission service type and is in communication connection with the first gateway, and belongs to a receiving interface for performing cross-domain transmission on the cross-domain data request; there may be a plurality of transparent gateway devices between the first gateway and the second gateway.
And S210, transmitting the data request information along the target virtual transmission line.
Further, after the target virtual transmission line is determined, the data request information sent by the first terminal is transmitted to the second gateway along the first gateway.
In this embodiment, the terminal that sends out the data request information has a locally supported transmission service type; the terminal can determine a target virtual transmission line corresponding to the data request information according to the service type storage file; therefore, the data request information is effectively transmitted according to the requirements of the user, and the product use experience of the user in a cross-domain scene is improved.
In one embodiment, the method further comprises creating the service type storage file;
wherein the establishing the service type storage file comprises:
sa. creating a first service type storage table; the first service type storage table contains a mapping relation between a first transmission service type supported by a first simulation gateway and a first virtual transmission line; wherein two gateways in the first analog gateway pair respectively belong to different large gateway clusters within the preset area range;
sb. creating a second service type memory table; the second service type storage table contains a mapping relation between a second transmission service type supported by the second analog gateway and a second virtual transmission line; and two gateways in the second analog gateway pair belong to different small gateway clusters in the same large gateway cluster in the preset area range.
The gateway large cluster in this embodiment may be a gateway cluster of a city, and the gateway small cluster may be an area inside the city. In the embodiment, different storage tables are established according to different scenes, and when a target virtual transmission route is determined, the relationship between two gateways can be determined, and then the two gateways are matched with different storage tables. Wherein, in the first service type storage table, a plurality of parallel virtual transmission lines are arranged between each gateway pair; correspondingly, the first simulation gateway supports a plurality of first transmission service types; and each first transmission service type corresponds to one first virtual transmission route. Similarly, in the second service type storage table, the second analog gateway supports a plurality of second transmission service types; correspondingly, the second simulation gateway supports a plurality of second transmission service types; and each second transmission service type corresponds to a second virtual transmission route.
It should be noted that the first service type storage table and the second service type storage table in the service type storage file can be continuously updated according to real-time simulation detection after the related gateway starts the virtual circuit simulation detection function, so as to ensure that updated storage table information can be obtained in time when the underlying network or the gateway changes. The virtual circuit simulation detection function can be controlled by a control switch arranged in the operation and maintenance system, and the working state of the delay detection module corresponding to the gateway pair is regulated and controlled by turning on or off the control switch.
Further, establishing a service type storage file belonging to the detection process of the virtual circuit after the virtual circuit simulation detection function is started; the establishing process may be that the establishing is performed at a server side, and then the corresponding terminal acquires the service type storage file from the server to match the required virtual transmission line.
In a possible embodiment, the step Sa creates a first service type storage table, as shown in fig. 3, which may include:
s402, acquiring all first simulation gateway pairs in the preset area range;
s404, acquiring a first virtual transmission line between two gateways in each first analog gateway pair;
s406, detecting a first transmission duration corresponding to the first virtual transmission line to obtain a first transmission service type supported by the first analog gateway;
and S408, obtaining the first service type storage table according to the first virtual transmission line of each first analog gateway pair in the preset area range and the first transmission service type.
In practical application, a plurality of first simulation gateway pairs are generally arranged in the preset area; when the first service type storage table is established, a plurality of first virtual transmission lines are arranged between each first simulation gateway pair. In this embodiment, the first transmission durations corresponding to all the first virtual transmission lines may be obtained through detection simulation of the detection packet; further, determining a first transmission service type corresponding to each first transmission time length according to the mapping relation between the transmission time lengths and the transmission service types; thereby, the first service type storage table is obtained according to the first virtual transmission line and the first transmission service type.
Wherein, the mapping relation between the transmission duration and the transmission service type can set different standards in different areas; particularly, the data transmission has different transmission time lengths based on the difference of physical transmission lines among the areas. For example, when the time length of the cross-domain transmission from beijing to shanghai is 20ms to 25ms, the transmission service type may be considered as the first transmission service type with low latency requirement; when the time length of the cross-domain transmission from Beijing to Shanghai is 25ms to 30ms, the transmission service type can be considered as a second transmission service type with medium delay requirement; however, when the time length of the cross-domain transmission from shanghai to the united states silicon valley is 115ms to 125ms, the transmission service type can be considered as a first transmission service type with low delay requirement, and when the time length of the cross-domain transmission from shanghai to the united states silicon valley is 180ms to 200ms, the transmission service type can be considered as a second transmission service type with medium delay requirement; and so on.
In a specific embodiment, the step S406 of detecting the first transmission duration corresponding to the first virtual transmission line may include, as shown in fig. 4:
s602, determining a first starting point gateway and a first terminal point gateway in a first analog gateway pair according to the first virtual transmission line;
s604, acquiring a first moment; the first moment is the moment when the first starting point gateway sends a first detection message to the first destination gateway; the identification information of the first detection message is obtained according to the first starting point gateway and the first destination gateway;
s606, acquiring a fourth time; the fourth moment is the moment when the first starting point gateway receives the first detection message returned by the first end point gateway;
and S608, calculating to obtain the first transmission duration according to the fourth time and the first time.
In this embodiment, taking one of the first virtual transmission lines as a representative, determining a transmission duration of the first virtual transmission line according to the obtained transmission duration of the first probe packet along the first virtual transmission line; the transmission duration includes the sum of the duration of the first detection message sent from the home terminal and the duration of the first detection message returned from the destination terminal. In this embodiment, the first virtual transmission line represents a line from the first start point gateway to the first end point gateway of the first probe packet, and the corresponding transmission duration is as follows: (fourth time-first time)/2. If the first virtual transmission line represents a bus route from the first starting point gateway to the first starting point gateway, where the first detection packet is sent from the first starting point gateway to the first starting point gateway, the corresponding transmission duration is: fourth time-first time.
The identification information of the first detection message is obtained according to the first starting point gateway and the first destination point gateway; different virtual transmission lines have respective corresponding first probe messages. Specifically, the first detection packet may be an IP five-tuple (source IP address, source port, destination IP address, destination port, and protocol number) or an IP triple (source IP address, destination IP address, protocol number). Taking an IP quintuple as an example, if the first starting point gateway is a and the first end point gateway is B; obtaining the identification information (similar to the external package of the goods) of the first detection message according to the IP quintuple (the IP address of the A, the port of the A, the IP address of the B, the port of the B and the protocol number); different gateways can perform matching identification on the first detection message according to the identification information.
In practical application, generally, the first detection message selects an IP triple (source IP + destination IP + protocol number); in conjunction with the system environment diagram illustrated in fig. 5, the source IP takes the value of oip or vip at the home terminal; the destination IP takes the value of oip or vip at the far end, wherein both oip and vip belong to an address pool; correspondingly, if the pool has 32 values, the pool can be combined into 32 (home end) × 32 (far end) × 1024 different triples, that is, 1024 first detection messages, which correspond to 1024 virtual transmission lines to be detected; the value of the protocol number therein is currently a fixed value 254. If the first detection message adopts an IP quintuple, a source port and a destination port are added on the basis of the prior art, and the value of the source port/the destination port can be mapped from a dip or randomly produced from each gateway; the protocol number may also be adjusted to other values, such as: 6(tcp) or 17 (udp).
Wherein dip in fig. 5 represents a Device IP address for identifying gateways, each gateway having a unique identifier; vip in fig. 5 represents a Virtual IP address for globally identifying a large cluster of gateways; oip in fig. 5 denotes an Outer IP address for constructing a virtual transmission line; the Svip in fig. 5 denotes SmallVirtual IP address for globally identifying a small cluster of gateways.
In a possible implementation manner, the step S608 obtains the first transmission duration according to the fourth time and the first time, as shown in fig. 6, and may further include:
s605a, acquiring a second moment; the second moment is the moment when the first detection message received from the first starting point gateway is sent to the intermediate transfer gateway; the intermediate switching gateway is determined and obtained according to the identification code of the first virtual transmission line, and the intermediate switching gateway and the first terminal gateway belong to the same gateway large cluster;
s605b, obtaining a third moment, wherein the third moment is the moment when the intermediate transfer gateway receives the first detection message;
step S608 calculates the first transmission duration according to the fourth time and the first time, and includes:
s608a, acquiring internal transmission time length; the internal transmission time length is the transmission time length between the intermediate transfer gateway and the first destination gateway calculated according to the third moment and the second moment;
and S608b, calculating to obtain a first transmission time length between the first starting point gateway and the first terminal point gateway according to the fourth time, the first time and the internal transmission time length.
In an actual scenario, based on consideration of high availability, when one of the large gateway clusters (for example, the first end point gateway) has a problem, other small gateway clusters may be selected to forward a service packet; correspondingly, in this case, the first probe packet is generally forwarded to the first start point gateway through the intermediate transit gateway; the transmission duration of the first detection packet needs to take into account the transmission duration of the detection packet between the first end point gateway and the intermediate transit gateway.
The intermediate transfer gateway determines the identification code (identification id value) of the first virtual transmission line; specifically, a modular operation is performed according to the identifier id value of the first virtual line and the number of total dip gateways in the gateway set where the intermediate transit gateway is located, and the operation result is used for selecting dip corresponding to the gateway in the gateway set class table. The identification id value of the first virtual line is generated as an identification id value of the virtual line after a virtual line detection function is started between two gateways to be tested, and the identification id value of the first virtual line is kept unchanged in the whole life cycle of starting the virtual line detection.
FIG. 7 is a flow chart of a probing simulation for one of the first simulated gateway pairs; the ip in the figure belongs to the identification of the sending end and the receiving end, and the data in the figure is used as a first detection message for data detection transmission. Obtaining the internal transmission time length t4-t3 in the scene, wherein the total transmission time length of the first detection message is the transmission time length of the first detection message which is sent from the first starting point gateway and returned to the first starting point gateway, namely t6-t1- (t4-t 3); correspondingly, the first transmission duration between the first start point gateway and the first end point gateway can be regarded as [ t6-t1- (t4-t3) ]/2.
Specifically, the flowchart in fig. 7 is explained:
1) the A1 device uses the selected virtual transmission route to transmit the detection message carrying the id to the opposite terminal.
2) After receiving the detection message, the Bx2 device at the opposite end calculates the device B1 to be forwarded through the id, and transmits the detection message to B1 while carrying the sending time t 3.
3) After B1 receives the message, calculating the actual transmission delay through the time difference between the SVips of the small cluster where B1 and Bx2 are located (t4-t 3); id and transport delay (t4-t3) are sent to peer a 1.
4) The A1 equipment records time t6 after receiving the detection message, and through t6-t1-Delay, the A1 equipment sends the detection message to the opposite end, and returns the transmission time of the detection message.
In a specific embodiment, the step S406 detects a first transmission duration corresponding to the first virtual transmission line, and then may further include:
s408, sequencing all the first transmission durations in the preset area range;
s410, classifying the first transmission duration according to the sequencing result to obtain one or more gateway sets; and the difference value between the first transmission time lengths corresponding to every two gateways in the same gateway set is within a preset range.
In this embodiment, all the first transmission durations within a preset region range are sorted, and the first transmission durations are further classified into a gateway set according to the sorting result; the classification is based on the difference between the transmission time lengths of every two gateways in the same gateway set.
In this embodiment, gateway sets are classified according to the difference of delay durations, each gateway set corresponds to a plurality of virtual transmission lines, and all the gateway sets are sets of paths between gateways of virtual transmission lines with equal or similar end-to-end transmission durations.
It should be noted that different terminals may use different sets when transmitting cross-domain data, for example, a set representing the lowest transmission duration may be selected when the lowest transmission duration is required; requiring a moderate transmission duration, a set representing the moderate transmission duration may be selected. The sequence of the first transmission duration can be classified according to the set number; for example, the top 10 or the top 20 is classified into a set; and is not limited in this respect.
In this embodiment, a first transmission duration corresponding to a first-ranked gateway in each gateway set may also be selected as a representative of the first transmission duration of the gateway set; or selecting a first transmission time length corresponding to a last sequenced gateway in each gateway set as a representative of the first transmission time length of the gateway set; and obtaining the first service type storage table according to the first transmission duration of the gateway set and the first transmission service type corresponding to the first transmission duration.
Further, when a first gateway or a second gateway under the target virtual transmission line fails, the gateway may jump to an adjacent gateway in a gateway set where the first gateway is located, so as to replace the first gateway to send data request information; wherein, while the first gateway is replaced, the second gateway is also replaced with a gateway correlated with the adjacent gateway.
In a possible embodiment, the step Sb of establishing the second service type storage table may include:
s802, acquiring all second simulation gateway pairs in the preset range;
s804, acquiring a second virtual transmission line between two gateways in each second analog gateway pair;
s806, detecting a second transmission duration corresponding to the second virtual transmission line to obtain a second transmission service type supported by the second analog gateway;
and S808, obtaining the second service type storage table according to the second virtual transmission line of each second analog gateway pair in the preset area range and the second transmission service type.
Specifically, the process of establishing the second service type storage table is similar to the process of establishing the first service type storage table according to the first virtual transmission line and the first transmission service type.
In a specific embodiment, the step S806 of detecting a second transmission duration corresponding to the second virtual transmission line may include:
s1002, determining a second starting point gateway and a second terminal point gateway in a second analog gateway pair according to the second virtual transmission line;
s1004, acquiring sending time; the sending time is the time when the second detection message is sent to the second destination gateway; the identification information of the second detection message is obtained according to the second starting point gateway and the second destination gateway;
specifically, when the second probe packet is sent, the identifier of the second virtual line is sent at the same time, so that the second probe packet is transmitted along the second virtual line.
S1006, acquiring a receiving moment; the receiving time is the time when the second starting point gateway receives a second detection message sent by the second destination gateway;
and S1008, obtaining a second transmission time length between the second starting point gateway and the second destination point gateway according to the receiving time and the sending time.
In this embodiment, taking one of the second virtual transmission lines as a representative, the transmission duration of the second virtual transmission line is determined according to the obtained transmission duration of the second probe packet along the second virtual transmission line.
The identification information of the second detection message is obtained according to the second starting point gateway and the second destination gateway; the different virtual transmission lines have respective corresponding second probe messages. The second detection packet may be an IP five-tuple (source IP address, source port, destination IP address, destination port, and protocol number) or an IP triple (source IP address, destination IP address, protocol number), similar to the first detection packet described above. Taking IP quintuple as an example, if the second starting gateway is C and the second ending gateway is D; obtaining the identification information (similar to the external package of the goods) of the second detection message according to the IP quintuple (the IP address of the C, the port of the C, the IP address of the second, the port of the second and the protocol number); and different gateways can perform matching identification on the second detection message according to the identification information.
If the total transmission time length of the second detection message is the transmission time length of the second detection message which is sent from the second starting point gateway and returned to the second starting point gateway; i.e., t4-t 1; correspondingly, the first transmission duration between the first start gateway and the first end gateway can be regarded as [ t4-t1 ]/2. Specifically, as shown in fig. 8, for example, time t1 is the time when the second probe packet is sent to the svip-2, time t2 is the time when the svip-2 receives the second probe packet, time t3 is the time when the svip-2 returns the first probe packet to dip-1-1, and time t4 is the time when the dip-1-1 receives the first probe packet; the second transmission time period may be (t4-t 1)/2-1500 ms.
It should be noted that, in the present specification, the transmission duration of the detection packet in the corresponding virtual transmission line is obtained as the transmission duration of the service packet in the corresponding virtual transmission line; the Hash-key supported by each device in the virtual line should be combined on the same virtual transmission line, so that the service message and the detection message transmitted on the virtual transmission line have consistent Hash results. Each gateway can automatically acquire the transmission duration of detection according to the started detection function.
It is further explained that the technical solution of the present specification is applied to a transmission network having a gateway node of a backbone network, may also be applied to a transmission network without a gateway node of a backbone network, and may also be applied to a multi-service transmission scenario through the internet.
In this embodiment, within a preset area, analog detection is performed on a gateway pair therein to obtain a mapping relationship between a service type of the gateway pair and a transmission duration of a virtual transmission line in which the gateway pair is located; when the data request information is acquired, the time length for transmitting the data request information can be matched from the obtained mapping relation, and the time length requirement of an enterprise user on cross-domain data transmission is met; for example, if the enterprise user has a service with a low delay requirement, the data request information on the terminal can be forwarded to the virtual transmission line with the lowest delay according to the opened line selection function, so as to realize the lowest delay requirement of the cross-domain network transmission of the terminal.
An embodiment of the present specification provides a data transmission apparatus, as shown in fig. 9, the apparatus includes:
a storage file obtaining module 202, configured to obtain a service type storage file, where the service type storage file includes all virtual transmission lines within a preset area range;
a request information obtaining module 204, configured to obtain data request information;
a transmission service type obtaining module 206, configured to extract a locally supported transmission service type according to the data request information;
a target virtual circuit determining module 208, configured to determine a target virtual transmission line matching the transmission service type according to the service type storage file; the target virtual transmission line is a transmission line formed by a first gateway corresponding to a local area and a second gateway virtually connected with the first gateway;
a data information transmission module 210, configured to transmit the data request information along the target virtual transmission line.
In one embodiment, the apparatus further comprises a storage file creating module, configured to create the service type storage file;
wherein, the storage file establishing module comprises:
the first storage table establishing module is used for establishing a first service type storage table; the first service type storage table contains a mapping relation between a first transmission service type supported by a first simulation gateway and a first virtual transmission line; wherein two gateways in the first analog gateway pair respectively belong to different large gateway clusters within the preset area range;
the second storage table establishing module is used for establishing a second service type storage table; the second service type storage table contains a mapping relation between a second transmission service type supported by the second analog gateway and a second transmission line; and two gateways in the second analog gateway pair belong to different small gateway clusters in the same large gateway cluster in the preset area range.
In a possible implementation manner, the first storage table creating module includes:
the first simulation gateway pair acquisition unit is used for acquiring all first simulation gateway pairs in the preset area range;
a first virtual transmission line acquisition unit configured to acquire a first virtual transmission line between two gateways in each first analog gateway pair;
a first transmission service type obtaining unit, configured to detect a first transmission duration corresponding to the first virtual transmission line, so as to obtain a first transmission service type supported by the first analog gateway pair;
a first service type storage table obtaining unit, configured to obtain the first service type storage table according to the first virtual transmission line of each first analog gateway pair in the preset area range and the first transmission service type.
In a possible implementation manner, the first transmission service type obtaining unit includes:
a first gateway determining subunit, configured to determine, according to the first virtual transmission line, a first start point gateway and a first end point gateway in a first analog gateway pair;
a first time obtaining subunit, configured to obtain a first time; the first moment is the moment when the first starting point gateway sends a first detection message to the first destination gateway; the identification information of the first detection message is obtained according to the first starting point gateway and the first destination gateway;
a fourth time obtaining subunit, configured to obtain a fourth time; the fourth moment is the moment when the first starting point gateway receives the first detection message returned by the first end point gateway;
and the first transmission duration obtaining subunit is used for calculating and obtaining the first transmission duration according to the fourth time and the first time.
In a specific embodiment, the first transmission service type obtaining unit further includes:
a second time obtaining subunit, configured to obtain a second time; the second moment is the moment when the first detection message received from the first starting point gateway is sent to the intermediate transfer gateway; the intermediate switching gateway is determined and obtained according to the identification code of the first virtual transmission line, and the intermediate switching gateway and the first terminal gateway belong to the same gateway large cluster;
a third time obtaining subunit, configured to obtain a third time, where the third time is a time when the intermediate transit gateway receives the first detection packet;
the first transmission duration obtaining subunit includes:
an internal transmission duration obtaining subunit, configured to obtain an internal transmission duration; the internal transmission time length is the transmission time length between the intermediate transfer gateway and the first destination gateway calculated according to the third moment and the second moment;
and the first transmission duration calculation subunit is configured to calculate, according to the fourth time, the first time, and the internal transmission duration, a first transmission duration between the first starting point gateway and the first ending point gateway.
In a specific implementation manner, the first storage table creating module further includes:
the sorting unit is used for sorting all the first transmission durations in the preset region range;
a gateway set obtaining unit, configured to classify the first transmission duration according to the sorting result to obtain one or more gateway sets; and the difference value between the first transmission time lengths corresponding to every two gateways in the same gateway set is within a preset range.
In a possible implementation manner, the second storage table creating module includes:
the second analog gateway pair acquisition unit is used for acquiring all the second analog gateway pairs within the preset range;
a second virtual transmission line acquisition unit configured to acquire a second virtual transmission line between two gateways in each second analog gateway pair;
a second transmission service type obtaining unit, configured to detect a second transmission duration corresponding to the second virtual transmission line, so as to obtain a second transmission service type supported by the second analog gateway;
and a second service type storage table obtaining unit, configured to obtain the second service type storage table according to the second virtual transmission line of each second analog gateway pair in the preset area range and the second transmission service type.
In a specific embodiment, the second transmission service type obtaining unit includes:
a second gateway determining unit, configured to determine a second start point gateway and a second end point gateway in a second analog gateway pair according to the second virtual transmission line;
a transmission time acquisition unit for acquiring a transmission time; the sending time is the time when the second detection message is sent to the second destination gateway; the identification information of the second detection message is obtained according to the second starting point gateway and the second destination gateway;
a reception time acquisition unit for acquiring a reception time; the receiving time is the time when the second starting point gateway receives a second detection message sent by the second destination gateway;
and the second transmission duration obtaining unit is used for obtaining a second transmission duration between the second starting point gateway and the second ending point gateway according to the receiving time and the sending time.
It should be noted that the device embodiments have the same inventive concept as the method embodiments described above, and for concrete content, reference is made to the corresponding method embodiments.
An embodiment of the present specification provides a data transmission system, as shown in fig. 10, the system is configured to implement the data transmission method described above, and specifically, the system may include:
apollo: and the configuration data is used for managing the terminal equipment and is communicated with the VPC-OSS through the API interface.
VPC-OSS: and the business operation and management platform provides an API interface in the north direction and is responsible for synchronizing the configuration data of the terminal equipment in the south direction.
VPC-Agent: and the proxy process on the virtual backbone network gateway pulls the configuration data of the terminal equipment from the VPC-OSS.
And (3) control strategy: the circuit is used for controlling the opening of a circuit selection function switch on the gateway.
And (3) common routing: and the route of the terminal equipment without starting the line selection function.
Fine routing: and starting the route of the terminal equipment with the line selection function.
A first detection module: and the method is responsible for time delay detection, sequencing and grouping of a virtual transmission tunnel between one large gateway cluster and another large gateway cluster.
A second detection module: and the method is responsible for measuring the time delay between small gateway clusters in the same large gateway cluster.
It should be noted that the first detection packet is a time delay measurement of a gateway large cluster and a gateway large cluster, and the second detection packet is a time delay measurement inside one gateway large cluster; in practical application, the second detection module may also be assigned to the inside of the first detection module, so as to indicate that the second detection packet is used for taking charge of the time delay measurement between the small gateway clusters in the same large gateway cluster.
An embodiment of the present specification provides an apparatus, which includes a processor and a memory, where at least one instruction, at least one program, a set of codes, or a set of instructions is stored in the memory, and the at least one instruction, the at least one program, the set of codes, or the set of instructions is loaded and executed by the processor to implement the data transmission method according to the above embodiment.
Specifically, please refer to fig. 11 for a schematic structural diagram of an apparatus provided in an embodiment of the present disclosure. The device is used for implementing the data transmission method provided in the above embodiment, or implementing the establishment method of the service type storage table. Specifically, the method comprises the following steps:
the device 2000 includes a Central Processing Unit (CPU)2001, a system memory 2004 including a Random Access Memory (RAM) 2002 and a Read Only Memory (ROM)2003, and a system bus 2005 connecting the system memory 2004 and the central processing unit 2001. The device 2000 also includes a basic input/output system (I/O system) 2006 to facilitate information transfer between devices within the computer, and a mass storage device 2007 for storing an operating system 2013, application programs 2014, and other program modules 2015.
The basic input/output system 2006 includes a display 2008 for displaying information and an input device 2009 such as a mouse, keyboard, etc. for a user to input information. Wherein the display 2008 and the input devices 2009 are coupled to the central processing unit 2001 through an input-output controller 2010 coupled to the system bus 2005. The basic input/output system 2006 may also include an input/output controller 2010 for receiving and processing input from a number of other devices, such as a keyboard, mouse, or electronic stylus. Similarly, the input-output controller 2010 also provides output to a display screen, a printer, or other type of output device.
The mass storage device 2007 is connected to the central processing unit 2001 through a mass storage controller (not shown) connected to the system bus 2005. The mass storage device 2007 and its associated computer-readable media provide non-volatile storage for the device 2000. That is, the mass storage device 2007 may include a computer-readable medium (not shown) such as a hard disk or CD-ROM drive.
Without loss of generality, the computer-readable media may comprise computer storage media and communication media. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes RAM, ROM, EPROM, EEPROM, flash memory or other solid state memory technology, CD-ROM, DVD, or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. Of course, those skilled in the art will appreciate that the computer storage media is not limited to the foregoing. The system memory 2004 and mass storage device 2007 described above may be collectively referred to as memory.
The apparatus 2000 may also operate as a remote computer connected to a network via a network, such as the internet, in accordance with various embodiments of the invention. That is, the device 2000 may be connected to the network 2012 through a network interface unit 2011 that is coupled to the system bus 2005, or the network interface unit 2011 may be utilized to connect to other types of networks or remote computer systems (not shown).
Embodiments of the present invention also provide a computer storage medium, which may be disposed in a client to store at least one instruction, at least one program, a code set, or a set of instructions related to implementing a data transmission method in the method embodiments, where the at least one instruction, the at least one program, the code set, or the set of instructions are loaded and executed by the processor to implement the data transmission method provided in the method embodiments.
Optionally, in this embodiment, the storage medium may be located in at least one network device of a plurality of network devices of a computer network. Optionally, in this embodiment, the storage medium may include, but is not limited to: a U-disk, a Read-only memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
It should be noted that: the sequence of the embodiments in this specification is merely for description, and does not represent the advantages or disadvantages of the embodiments. And specific embodiments thereof have been described above. Other embodiments are within the scope of the following claims. In some cases, the acts or steps loaded in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus and device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference may be made to some descriptions of the method embodiments for relevant points.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A method of data transmission, the method comprising:
establishing a service type storage file, wherein the service type storage file comprises all virtual transmission lines in a preset area range;
acquiring the service type storage file;
acquiring data request information;
extracting locally supported transmission service types according to the data request information;
determining a target virtual transmission line matched with the transmission service type by the service type storage file; the target virtual transmission line is a transmission line formed by a first gateway corresponding to a local area and a second gateway virtually connected with the first gateway;
transmitting the data request information along the target virtual transmission line;
wherein, the establishing a service type storage file comprises:
establishing a first service type storage table; the first service type storage table contains a mapping relation between a first transmission service type supported by a first simulation gateway and a first virtual transmission line; wherein two gateways in the first analog gateway pair respectively belong to different large gateway clusters within the preset area range;
establishing a second service type storage table; the second service type storage table contains a mapping relation between a second transmission service type supported by the second analog gateway and a second virtual transmission line; and two gateways in the second analog gateway pair belong to different small gateway clusters in the same large gateway cluster in the preset area range.
2. The data transmission method according to claim 1, wherein the establishing a first service type storage table comprises:
acquiring all first simulation gateway pairs in the preset area range;
acquiring a first virtual transmission line between two gateways in each first analog gateway pair;
detecting a first transmission duration corresponding to the first virtual transmission line to obtain a first transmission service type supported by the first analog gateway;
and obtaining the first service type storage table according to the first virtual transmission line of each first analog gateway pair in the preset area range and the first transmission service type.
3. The data transmission method according to claim 2, wherein the detecting a first transmission duration corresponding to the first virtual transmission line includes:
determining a first starting point gateway and a first terminal point gateway in a first analog gateway pair according to the first virtual transmission line;
acquiring a first moment; the first moment is the moment when the first starting point gateway sends a first detection message to the first destination gateway; the identification information of the first detection message is obtained according to the first starting point gateway and the first destination gateway;
acquiring a fourth time; the fourth moment is the moment when the first starting point gateway receives the first detection message returned by the first end point gateway;
and calculating the first transmission duration according to the fourth time and the first time.
4. The data transmission method according to claim 3, wherein the calculating according to the fourth time and the first time to obtain the first transmission duration further comprises:
acquiring a second moment; the second moment is the moment when the first detection message received from the first starting point gateway is sent to the intermediate transfer gateway; the intermediate switching gateway is determined and obtained according to the identification code of the first virtual transmission line, and the intermediate switching gateway and the first terminal gateway belong to the same gateway large cluster;
acquiring a third moment, wherein the third moment is the moment when the intermediate transfer gateway receives the first detection message;
the calculating the first transmission duration according to the fourth time and the first time includes:
acquiring internal transmission time; the internal transmission time length is the transmission time length between the intermediate transfer gateway and the first destination gateway calculated according to the third moment and the second moment;
and calculating to obtain a first transmission time length between the first starting point gateway and the first terminal point gateway according to the fourth moment, the first moment and the internal transmission time length.
5. The data transmission method according to claim 2, wherein the detecting a first transmission duration corresponding to the first virtual transmission line further comprises:
sequencing all the first transmission durations in the preset area range;
classifying the first transmission duration according to the sequencing result to obtain one or more gateway sets; and the difference value between the first transmission time lengths corresponding to every two gateways in the same gateway set is within a preset range.
6. The data transmission method according to claim 1, wherein the establishing process of the second service type storage table comprises:
acquiring all second simulation gateway pairs in the preset area range;
acquiring a second virtual transmission line between two gateways in each second analog gateway pair;
detecting a second transmission duration corresponding to the second virtual transmission line to obtain a second transmission service type supported by the second analog gateway;
and obtaining the second service type storage table according to the second virtual transmission line of each second analog gateway pair in the preset area range and the second transmission service type.
7. The data transmission method according to claim 4, wherein the detecting a second transmission duration corresponding to the second virtual transmission line includes:
determining a second starting point gateway and a second destination gateway in a second analog gateway pair according to the second virtual transmission line;
acquiring a sending time; the sending time is the time when the second detection message is sent to the second destination gateway; the identification information of the second detection message is obtained according to the second starting point gateway and the second destination gateway;
acquiring a receiving moment; the receiving time is the time when the second starting point gateway receives a second detection message sent by the second destination gateway;
and obtaining a second transmission time length between the second starting point gateway and the second destination point gateway according to the receiving time and the sending time.
8. A data transmission apparatus, characterized in that the apparatus comprises:
the device comprises a storage file establishing module, a storage management module and a service type storage module, wherein the storage file establishing module is used for establishing a service type storage file which comprises all virtual transmission lines in a preset area range;
the storage file acquisition module is used for acquiring the service type storage file;
the request information acquisition module is used for acquiring data request information;
the transmission service type obtaining module is used for extracting locally supported transmission service types according to the data request information;
the target virtual circuit determining module is used for determining a target virtual transmission circuit matched with the transmission service type according to the service type storage file; the target virtual transmission line is a transmission line formed by a first gateway corresponding to a local area and a second gateway virtually connected with the first gateway;
the data information transmission module is used for transmitting the data request information along the target virtual transmission line;
wherein, the storage file establishing module comprises:
the first storage table establishing module is used for establishing a first service type storage table; the first service type storage table contains a mapping relation between a first transmission service type supported by a first simulation gateway and a first virtual transmission line; wherein two gateways in the first analog gateway pair respectively belong to different large gateway clusters within the preset area range;
the second storage table establishing module is used for establishing a second service type storage table; the second service type storage table contains a mapping relation between a second transmission service type supported by the second analog gateway and a second transmission line; and two gateways in the second analog gateway pair belong to different small gateway clusters in the same large gateway cluster in the preset area range.
9. An apparatus comprising a processor and a memory, the memory having stored therein at least one instruction, at least one program, set of codes, or set of instructions, the at least one instruction, the at least one program, set of codes, or set of instructions being loaded and executed by the processor to implement a data transfer method as claimed in any one of claims 1 to 7.
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