CN101841387A - Wide area network data speed acceleration method, device and system - Google Patents
Wide area network data speed acceleration method, device and system Download PDFInfo
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Abstract
The invention relates to a wide area network data speed acceleration method, a device and a system. The method comprises the steps of: obtaining a packet which the business request corresponds to; determining an optimizing/speed acceleration strategy which the business application corresponds to according to the identification characteristic of the packet; and carrying out the wide area network data speed acceleration forwarding according to the optimizing/speed acceleration strategy. The invention makes up the defect that the existing wide area optimizing technology only can control the network transport protocols, increases the practical applicability of the wide area network optimizing technology in the business supporting network, and increases the data transmission of the wide area network by adopting the flow strategy based on the business characteristic; and users can rapidly and efficiently use the wide area network resource to solve the bandwidth and application time delay problem.
Description
Technical field
The present invention relates to the business support system technical field of data transmission, relate in particular to business support system data speed acceleration method, Apparatus and system in a kind of wide area network.
Background technology
In wide area network data transmission, in order to solve the slower problem of the transmission of data in network, people have proposed the various solutions of " optimize network, quicken to use ", and its core is to make the transmission that is applied in the network quicker.
The wan optimization technology is exactly to quicken a kind of new technology of application.Face the bottleneck of wide area network speed limitation, can be optimized by the technology of wan optimization.Traditional solution just increases bandwidth slowly such as speed, in fact is not that single like this solution just can solve fully.The wan optimization The Application of Technology can not only have a qualitative leap on the operating speed of office application, operation system, and can allow the flow in the bandwidth reduce significantly, makes database comprise that big the concentrating of server becomes possibility.By the wide area network speed technology, subdue some central problems of liquid flow of Network Transmission, the amplitude of minimizing is 30%~90%, and this is the assurance that a large number of services demand is better carried out.
The realization of wan optimization technology at present mainly contains following several mode:
1) data-optimized: as, to comprise data compression, safe buffer memory, technology such as read in advance by data are carried out buffer memoryization (temporary transient keeping) and the compressionization operation comes conserve bandwidth to sending;
2) transmission optimization: increase the data volume (tcp window size) that once can send, comprise technology such as tcp protocol optimization;
3) application program optimization: optimize file access agreement (exchanges data) and also reduce number of communications, comprise tcp protocol optimization, technology such as multiplexed.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
1. existing wan optimization technology is applied in the transmission course of business support system data, there is for want of analysis to traffic performance and data transmission procedure thereof, its protocol optimization, data compression, metadata cache, read in advance, every optimisation technique such as multiplexed is difficult to realize or DeGrain, and is poor for applicability;
2. lack for traffic performance but not the data traffic control strategy of the network transmission protocol, thereby can't under same transmission circuit condition, accomplish can't meet individual requirements to treating with a certain discrimination of different business data speed acceleration demand;
3. the flow control strategy of existing wan optimization technology can only be disposed in network both sides static state, can't accomplish the data of transmission over networks to be carried out intelligent matching optimization, defectives such as lack of wisdom application.
Summary of the invention
The objective of the invention is at the defective such as poor for applicability in the existing wan optimization technology, a kind of wide area network data speed acceleration system, data speed acceleration device and method are provided, to improve the practicality of wan optimization technology at business supporting network, and further improve efficiency of transmission, reduce the application delay of wide area network.
For achieving the above object, according to an aspect of the present invention, provide a kind of wide area network data speed acceleration system, comprised transmitting terminal, WAN equipment and receiving terminal, wherein:
Transmitting terminal is used to send the packet of service request correspondence;
WAN equipment is used for the packet of receiving end/sending end, determines corresponding optimization/acceleration strategy according to the recognition feature of packet, and to the packet forwarding of raising speed;
Receiving terminal is used for receiving the packet that raises speed after transmitting by WAN equipment, sends the corresponding response packet.
Preferably, transmitting terminal can comprise: client device and/or LAN switch, and receiving terminal comprises: server and/or LAN switch; Perhaps transmitting terminal comprises: server and/or LAN switch, receiving terminal comprises: client device and/or LAN switch.
Above-mentioned WAN equipment can comprise: the data speed acceleration device of client WAN router and client correspondence.
Above-mentioned WAN equipment can also comprise: the data speed acceleration device of server end WAN router and server end correspondence.
For achieving the above object, according to an aspect of the present invention, also provide a kind of wide area network data speed acceleration device, having comprised:
Analytic unit, the transfer of data, data structure and the data response mechanism that are used for packet are analyzed, and find out the traffic identification characteristic information of this packet;
Query unit is used for the corresponding relation according to the network protocol type of the traffic identification characteristic information of this packet and bearer service transmission, finds out the network transmission protocol corresponding with this packet;
Judgement unit is used for selecting suitable wan optimization/acceleration strategy according to the network transmission protocol, and acceleration strategy comprises: protocol optimization, byte buffer memory, target cache, compression/de-compression, Bandwidth Management or above combination in any.
Above-mentioned data speed acceleration device can bypass server end WAN router or client WAN router.
For achieving the above object, according to a further aspect in the invention, also provide a kind of wide area network data speed acceleration method, this method may further comprise the steps: the packet that obtains the service request correspondence; Determine the optimization/acceleration strategy of service application correspondence according to the recognition feature of this packet; Carrying out the speed-raising of wide area network data bag according to this optimization/acceleration strategy transmits.
Data speed acceleration method of the present invention, Apparatus and system, can determine different optimization/acceleration strategies according to the traffic identification feature of packet, thereby the forwarding of expedited data bag, improve the practicality of wan optimization technology greatly at business supporting network, and further improve efficiency of transmission, reduce the application delay of wide area network, and different business data speed acceleration demand treated with a certain discrimination meet individual requirements.The present invention can also make the user can efficiently use existing wan resource to solve bandwidth fast and use delay problem.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is according to wide area network data speed acceleration system embodiment structure chart of the present invention;
Fig. 2 is according to wide area network data speed acceleration system embodiment schematic diagram of the present invention;
Fig. 3 is according to wide area network data speed acceleration method embodiment workflow diagram of the present invention;
Fig. 4 is the signaling process schematic diagram of Fig. 3;
Fig. 5 is the selection according to the present invention tactful embodiment schematic diagram that raises speed;
Fig. 6 is according to data speed acceleration structure drawing of device of the present invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
The invention provides a kind of wide area network data speed acceleration system, comprising: transmitting terminal, WAN equipment and receiving terminal, wherein:
Transmitting terminal is used to send the packet of service request correspondence, specifically can be client, server end etc., all can be used as transmitting terminal so long as send the end of packet;
WAN equipment is used for the packet of receiving end/sending end, determines corresponding optimization/acceleration strategy according to the recognition feature of this packet, and to the forwarding of raising speed of this packet;
Receiving terminal is used for receiving the packet that raises speed after transmitting by WAN equipment, sends the corresponding response packet.If transmitting terminal is a client, this receiving terminal can be a server end; If transmitting terminal is a server end, then this receiving terminal can be a client.
No matter transmitting terminal or receiving terminal in the said system, the centre all can be carried out the speed-raising forwarding of packet by WAN equipment, this WAN equipment can only carry out the acceleration forwarding of packet in the client router side, also can only carry out the acceleration forwarding of packet in server end router side, can also all quicken to transmit in client and server end router side, below Fig. 1 all carry out the preferred embodiment schematic diagram that the packet speed-raising is transmitted for both sides.
Fig. 1 is according to wide area network data speed acceleration system embodiment structure chart of the present invention, and with reference to figure 1, wide area network data speed acceleration of the present invention system comprises:
Client 101 connects client WAN router 11, business demand is gathered form the service request data bag, sends to client WAN router 11, and receives the server response data packet that client WAN router 11 transmits.
WAN equipment 102 comprises: client WAN router 11, IP transmission network, client data speed enhancing apparatus 12, server end WAN router 31 and server end data speed acceleration device 32.
Client WAN router 11 receives the service request data bag of clients 101 and with the data speed acceleration device 12 of its client correspondence of videoing; The transfer of data of 12 pairs of these service request data bags of data speed acceleration device, data structure and data response mechanism are analyzed, find the corresponding relation of the network protocol type of traffic performance and bearer service transmission, and then select suitable speed-raising strategy that this service request data bag is transmitted through the speed-raising of IP transmission network and deliver to server end WAN router 31.
Server end WAN router 31 sends to server end 103 with the service request data bag, the response data packet of reception server end 103 and with the data speed acceleration device 32 of its server end of videoing, and this response data packet is forwarded to client 101 through the speed-raising of IP transmission network according to the speed-raising strategy that data speed acceleration device 32 provides.
Server end 103 links to each other with server end WAN router 31 in the wide area network, the service request data bag that reception server end WAN router 31 sends, and respond this service request; The response data packet that produces is sent to WAN router 31.
Fig. 2 is according to wide area network data speed acceleration system embodiment schematic diagram of the present invention.With reference to figure 2, present embodiment is based on the wide area network data speed acceleration system of traffic performance, comprises WAN network topology, core/edge local net network topology, data speed acceleration device.
The WAN network topology comprises router, firewall box and the middle IP transmission network at wide area network two ends, realizes the transmitted in both directions of two end datas, and functions such as safe access control, flow detection and Qos control are provided.
Core/edge local net network topology comprises LAN switch, server/customer end equipment, gathers the service traffics of local terminal server/customer end, converges the back by LAN switch and submits to router to transmit data.
Marginal date speed enhancing apparatus or core data speed enhancing apparatus lay respectively at client-side and server side, above-mentioned data speed acceleration device is the hardware device that is positioned at the WAN router bypass, is responsible for the data speed acceleration that carries out Different Strategies through the service traffics of LAN switch is handled; Main processing mode is:
1) transfer of data, data structure and the data response mechanism of the every business of business support system are analyzed, found the corresponding relation of the network protocol type of traffic performance and bearer service transmission, thereby realize traffic policy control based on traffic performance;
2) according to the data analysis result of software module, data at different service types, select different data speed acceleration technology (tcp protocol optimization, data compression, safe buffer memory, read in advance, multiplexed etc.) for use by the integrated traffic policy control tool of hardware module, thereby realize wide area network data speed acceleration based on traffic performance.
According to user's demand, can also there be following implementation in the wide area network data speed acceleration system of present embodiment:
1). only insert data speed acceleration device device in the WAN equipment, to the processing of raising speed of client 101 service request data bags in the bypass of client WAN router;
2). only insert data speed acceleration device device in the WAN equipment, to the processing of raising speed of the response data packet of server end 103 in the bypass of server end WAN router.
Fig. 3 is the embodiment workflow diagram according to wide area network data speed acceleration method of the present invention, Fig. 4 is the signaling process figure of Fig. 3, with reference to figure 3 and Fig. 4, present embodiment is described the specific implementation process of basis based on the wide area network data speed acceleration method of traffic performance in conjunction with said system embodiment:
The marginal date speed enhancing apparatus is to " foreground comprehensive inquiry " business data packet analysis and select the detailed process of speed-raising strategy to be exemplified below:
When business data packet reaches the data speed acceleration device to the edge, this device can (comprise: the address according to the characteristic information of business data packet, PORT COM, application level protocol etc.) determine its professional corresponding network transmission protocol, and the network transmission protocol has largely determined to use the Data Transmission Feature of communication, for example: " foreground comprehensive inquiry " professional interaction data stream by Transmission Control Protocol is realized, its main communication characteristic is exactly that every transmission 4K data will be carried out the two ends data validation one time, the marginal date speed enhancing apparatus can pass through protocol optimization, multiplexing technique drops to shaking hands on the wide area network minimum, thereby accelerates the transmission speed of business datum.
The middle selection speed-raising strategy of marginal date speed enhancing apparatus is to adopt intelligent algorithm by the traffic policy control tool, makes it can adopt one or more wide area network speed-raising technology to mate better based on the packet of traffic performance and realizes.At first, the byte buffer memory is realized optimizing by set up dictionary in the wide area network data speed acceleration device, and the foundation of dictionary is set up according to the byte stream characteristic of business fully, thereby reduces the flow of wide area network transmission to greatest extent; Secondly, target cache then can tracking server on the content change rule, thereby determine the cache flush time, realizes the raising of best bandwidth conservation and speed; At last, protocol optimization is optimized according to the actual state of the network transmission protocol, application communications protocol and transfer of data.
The marginal date speed enhancing apparatus is analyzed other business data packet and selected to raise speed strategy can be referring to table 1.
Table 1 traffic identification characteristic and corresponding optimization/acceleration strategy mapping table
The core data speed enhancing apparatus analyzes, selects the detailed process of data speed acceleration strategy as follows to " foreground comprehensive inquiry " response data packet: the core data speed enhancing apparatus is analyzed " foreground comprehensive inquiry " response data packet, find its data type to be big byte data bag, and then selecting data compress, the repeating data index technology is submitted to router as the data speed acceleration strategy of this data transfer based on File Transfer Protocol;
The data speed acceleration strategy that the core data speed enhancing apparatus is analyzed, selected other service response packet can be referring to table 1.
Fig. 5 is the embodiment schematic diagram according to selection optimization/acceleration strategy of the present invention.As shown in Figure 5, wide area network speed-raising technology mainly contains five kinds, they some can apply to all application, and have some can only apply to specific protocol, because the multiple business system adopts different communications protocol on wide area network, comprise: CIFS, HTTP, HTTPs, MAPI etc., so wide area network speed-raising module need fully utilize this five kinds of optimizations that technology realizes using.These five kinds of technology comprise:
1. Bandwidth Management: enterprise adopts Bandwidth Management, can be bandwidth class of the mutual assignment of traffic of any application, and the net administrator can set restriction (minimum value), also can guarantee the maximum of bandwidth, thereby guarantees the preferential utilized bandwidth of crucial application.
2. protocol optimization: protocol optimization changes traditional serial communication into parallel, make be applied on the wide area network more efficient.Loaded down with trivial details agreement is handed over the family process quickness and high efficiency more that becomes, and the response time also shortens greatly.This comprises the optimization of the protocol optimization and the Communication Layer of application layer.
3. byte buffer memory: the byte buffer memory is observed in the application traffic repetitions patterns (byte stream) that moves between two buffers, and these patterns are made marks with a token, sends this token rather than whole packets of information then.The byte buffer memory is not at using, and in more bottom running, can reduce the bandwidth of all TCP flows.
4. target cache: to the HTTP/HTTPS/CIFS/ streaming medium content, by interactive speed being improved greatly at the edge cache file.By the object that buffer memory on telecommuting equipment often uses, the client can avoid postponing and the consumption of bandwidth process.Target cache can greatly reduce bandwidth demand and file service postpones.
5. compression/de-compression: what compression was used is a kind of general compaction algorithms rule, and it can dispose before transfer of data that those have no to concern/predictable information, and this technology has reduced the transmission of application data on the wide area network link.Decompressing then is that to be applied in available bandwidth bigger, pursues under the professional situation than fast-response, formulates the rule that decompresses before data are wrapped in transmission, thereby improves it in the application response time of accepting side.
The specific implementation process is as follows:
At first, when the long-distance user wants access application data, if these contents are in the target cache of far-end wide area network speed-raising module, just can directly obtain from this locality, need not to transmit from wide area network, this part flow accounts for 30%~40 of total flow, has effectively reduced the transmission of data on wide area network.
Then, if content is not in buffer memory, for example: this content had been revised or expired or inapplicable target cache technology, at this moment, the wide area network data speed acceleration device is just retrieved the byte sequence in the byte buffer memory, if find the associated byte sequence, only need transmit very little token when then transmitting, and need not to transmit all data, realize the variable quantity transmission of data.
If do not find byte sequence in the byte buffer memory, the wide area network data speed acceleration device will compress the data that are necessary to compress, further reduce volume of transmitted data, certainly, the wide area network data speed acceleration device can be surveyed these data and whether be necessary compression, PDF, Streaming Media, execute file, the ZIP/RAR data compressed in this way will be to its compressions, to save the CPU expense.
Data through overcompression just can have been transmitted on wide area network, at this moment, the strategy that the wide area network data speed acceleration device also can be provided with according to the keeper before transmission, to important data, as: the transmission of foreground Account Disposal high priority data, realize that significant data is in advance.
At last, during actual transmissions, the wide area network data speed acceleration device is optimized it according to agreement, and serial communication is become parallel communication, reduces on the wide area network and delay, and improves the wide area network efficiency of transmission.
Fig. 6 is the data speed acceleration structure drawing of device according to the present invention, data speed acceleration device concrete function of the present invention and processing procedure can referring in said method and the system embodiment for the related description of client data speed enhancing apparatus 12, server end data speed acceleration device 32 and marginal date speed enhancing apparatus and core data speed enhancing apparatus.Present embodiment only is illustrated its internal structure, and as shown in Figure 6, the data speed acceleration device of present embodiment comprises:
Analytic unit, the transfer of data, data structure and the data response mechanism that are used for packet are analyzed, and find out the traffic identification characteristic information of packet;
Query unit is used for the corresponding relation according to the network protocol type of the traffic identification characteristic information of packet and bearer service transmission, finds out the network transmission protocol corresponding with packet;
Judgement unit is used for selecting suitable wan optimization/acceleration strategy according to the network transmission protocol, and acceleration strategy can comprise: protocol optimization, byte buffer memory, target cache, compression/de-compression and Bandwidth Management any one or combination.
Referring to shown in Figure 1, the data speed acceleration device 32 of server end WAN router bypass is primarily aimed at the traffic identification feature of response data packet and analyzes.The data speed acceleration device 12 of client WAN router bypass is primarily aimed at the traffic identification feature of service request data bag and analyzes.
The traffic policy control tool of data speed acceleration device can adopt intelligent algorithm, makes it can adopt one or more wide area network speed-raising technology to mate packet based on traffic performance better, and the speed-raising strategy comprises:
1) the byte buffer memory is realized optimizing by set up dictionary in the wide area network data speed acceleration device, and the foundation of dictionary is set up according to the byte stream characteristic of business fully, thereby reduces the flow of wide area network transmission to greatest extent;
2) target cache then can tracking server on the content change rule, thereby determine the cache flush time, realizes the raising of best bandwidth conservation and speed;
3) protocol optimization is optimized according to the actual state of the network transmission protocol, application communications protocol and transfer of data.
The various embodiments described above of the present invention can remedy the deficiency that existing wan optimization technology can only be controlled the network transmission protocol, can improve the practicality of wan optimization technology greatly at business supporting network, the traffic policy of having created simultaneously based on traffic performance is controlled at the wide area network data APPLICATION IN TRANSMISSION, makes the user can efficiently use existing wan resource to solve bandwidth and application delay problem fast.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a wide area network data speed acceleration method is characterized in that, may further comprise the steps:
A, obtain the packet of service request correspondence;
B, determine the optimization/acceleration strategy of described service application correspondence according to the recognition feature of described packet;
C, carry out the speed-raising of described wide area network data bag according to described optimization/acceleration strategy and transmit.
2. method according to claim 1 is characterized in that, described A comprises:
The WAN router of client obtains the service request data bag that client is initiated, and mirror image to the data speed acceleration device of bypass carries out subsequent operation B; And
Described C comprises: the WAN router of described client is transmitted according to the speed-raising that described optimization/acceleration strategy carries out the service request data bag.
3. method according to claim 1 is characterized in that, described A comprises:
The WAN router of server end receives the service request data bag, is transmitted to described server end;
Described server end receives described service request data bag, responds the WAN router of described service request to described server end;
The service request response data packet of the WAN router reception server end of described server end, and mirror image to the data speed acceleration device of bypass carries out subsequent operation B; And
Described C comprises: the WAN router of described server end is transmitted according to the speed-raising that described optimization/acceleration strategy carries out the service request response data packet.
4. according to each described method among the claim 1-3, it is characterized in that described B specifically comprises:
Transfer of data, data structure and data response mechanism to described packet are analyzed, and find out the traffic identification characteristic information of described packet;
According to the corresponding relation of the network protocol type of the traffic identification characteristic information of described packet and bearer service transmission, find out the network transmission protocol corresponding with described packet;
Select suitable wan optimization/acceleration strategy according to the described network transmission protocol;
Described data comprise: service request data bag, perhaps service request response data packet.
5. method according to claim 4 is characterized in that, described traffic identification characteristic information comprises: the address of data, PORT COM and/or application level protocol type.
6. method according to claim 4 is characterized in that, describedly selects suitable wan optimization/acceleration strategy to comprise according to the described network transmission protocol:
According to one or more network acceleration strategies in the network transmission protocol selection traffic policy control tool of described packet;
Wherein, described network acceleration strategy comprises: protocol optimization, byte buffer memory, target cache, compression/de-compression, Bandwidth Management, or the combination in any of above each acceleration strategy.
7. method according to claim 6 is characterized in that, described network acceleration strategy specifically comprises:
Utilize target cache optimization directly to obtain application data from this locality; Perhaps
Utilize the byte cache optimization, realize that application data is obtained in the variable quantity transmission of data; Perhaps
Data to necessity compression are compressed, and further reduce volume of transmitted data, realize that significant data in advance; Perhaps
Be optimized according to the agreement application data, serial communication is become parallel communication, reduce on the wide area network and delay.
8. a wide area network data speed acceleration system is characterized in that, comprising: transmitting terminal, WAN equipment and receiving terminal, wherein:
Described transmitting terminal is used to send the packet of service request correspondence;
Described WAN equipment is used to receive the packet of described transmitting terminal, determines corresponding optimization/acceleration strategy according to the recognition feature of described packet, and to the forwarding of raising speed of described packet;
Described receiving terminal is used for receiving packet after described speed-raising is transmitted by described WAN equipment, sends the corresponding response packet.
9. system according to claim 8 is characterized in that, described transmitting terminal comprises: client device and/or LAN switch, and described receiving terminal comprises: server and/or LAN switch; Perhaps
Described transmitting terminal comprises: server and/or LAN switch, described receiving terminal comprises: client device and/or LAN switch.
10. according to Claim 8 or 9 described systems, it is characterized in that described WAN equipment comprises:
The client WAN router is used to receive the packet of described service request correspondence, and mirror image is to the client data speed enhancing apparatus, and the optimization/acceleration strategy that provides according to described client data speed enhancing apparatus is forwarded to the IP transmission network with described packet speed-raising;
The client data speed enhancing apparatus, the described client WAN router of bypass is used to receive the described packet of forwarding, selects the optimization/acceleration strategy of service application correspondence according to the recognition feature of this packet.
11. according to Claim 8 or 9 described systems, it is characterized in that described WAN equipment comprises:
The server end WAN router, be used to receive described service request response data packet, mirror image is to server end data speed acceleration device, and the optimization/acceleration strategy that provides according to described server end data speed acceleration device is forwarded to the IP transmission network with described response data packet speed-raising;
Server end data speed acceleration device, the described server end WAN router of bypass is used to receive the described response data packet of forwarding, selects the optimization/acceleration strategy of service application correspondence according to the recognition feature of this packet.
12. a data speed acceleration device is characterized in that, comprising:
Analytic unit, the transfer of data, data structure and the data response mechanism that are used for packet are analyzed, and find out the traffic identification characteristic information of described packet;
Query unit is used for the corresponding relation according to the network protocol type of the traffic identification characteristic information of described packet and bearer service transmission, finds out the network transmission protocol corresponding with described packet;
Judgement unit, be used for selecting suitable wan optimization/acceleration strategy according to the described network transmission protocol, described acceleration strategy comprises: the combination in any of protocol optimization, byte buffer memory, target cache, compression/de-compression, Bandwidth Management or above each acceleration strategy.
13. data speed acceleration device according to claim 12, bypass server end WAN router or client WAN router.
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