CN107241270A - Message processing method and device - Google Patents
Message processing method and device Download PDFInfo
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- CN107241270A CN107241270A CN201710260978.5A CN201710260978A CN107241270A CN 107241270 A CN107241270 A CN 107241270A CN 201710260978 A CN201710260978 A CN 201710260978A CN 107241270 A CN107241270 A CN 107241270A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/121—Shortest path evaluation by minimising delays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—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
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/125—Shortest path evaluation based on throughput or bandwidth
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
Abstract
The embodiments of the invention provide a kind of message processing method and device.The DNS response messages that dns server name server is returned are received, DNS response messages carry the IP address of data server；A plurality of data link between routing device and data server is obtained according to the IP address of data server；Selection allows to use and idle bandwidth highest data link from a plurality of data link；The data link of selection is defined as the destination data link for transfer destination address for the request of data message of IP address.Pass through the method for the embodiment of the present invention, afterwards using selection allow to use and idle bandwidth highest data link transmission destination address for IP address request of data message destination data link, and then the load balancing of a plurality of data link between routing device and data server can be realized, and then improve link utilization.And without manually participating in during link utilization is improved, cost of labor is relatively low.
Description
Technical field
The present embodiments relate to communication technical field, more particularly to a kind of message processing method and device.
Background technology
With developing rapidly for technology, each large enterprises have higher requirement, and then many enterprises to the stability of network
Internet will can be accessed by any one data link equipped with a plurality of data link, the terminal of enterprise, so as to
Cause the problem of terminal of enterprise can not access internet extremely to avoid the occurrence of some data link.
Wherein, after the data server in the terminal connection internet of enterprise, line number is entered between data server
It is often to be assigned randomly in a certain data link between the terminal of enterprise and data server according to flow during interaction.
However, some of data link for so being easy to occur between the terminal of enterprise and data server Data-Link
The idle bandwidth on road is more, but the bandwidth of other data link has been occupied full simultaneously, afterwards, when again with data, services
When needing to carry out data interaction between device, if flow during interaction is assigned randomly into the data link that bandwidth has been occupied full
In, then link utilization can be caused relatively low.
The content of the invention
To overcome problem present in correlation technique, the embodiment of the present invention provides a kind of message processing method and device.
First aspect according to embodiments of the present invention is there is provided a kind of message processing method, applied to routing device, the side
Method includes：
The DNS response messages that name server is returned are received, the DNS response messages are with carrying the IP of data server
Location；
A plurality of data link between the routing device and the data server is obtained according to the IP address；
Selection allows to use and idle bandwidth highest data link from a plurality of data link；
The data link of the selection is defined as the request of data message for transfer destination address for the IP address
Destination data link.
Further, methods described also includes：
The DNS response messages are forwarded to terminal；So that the terminal is after the DNS response messages are received, to
The routing device sends target data request message, and the purpose IP address that the target data request message is carried is the number
According to the IP address of server.
Further, methods described also includes：
The target data request message that receiving terminal is sent；
Using the destination data link target data request message is forwarded to the data server.
Wherein, the selection from a plurality of data link allows to use and idle bandwidth highest data link, wraps
Include：
The use state of each data link in a plurality of data link is obtained, use state includes prohibitting the use of
With allow to use；
Use state is selected to be the data link for allowing to use from a plurality of data link；
It is the data link for allowing to use for each use state, obtains the fixed-bandwidth of the data link and work as
Preceding occupied flow, the fixed-bandwidth and the current occupied flow is subtracted each other the idle band for obtaining the data link
It is wide；
It is to allow to select idle bandwidth highest data link in the data link used in use state.
Wherein, described is to allow to select idle bandwidth highest data link in the data link used in use state,
Including：
If there is at least two idle bandwidth highest data link, then at least two data link
Each data link, sends probe messages, and record the transmission detection report by the data link to data server
The delivery time of text；
Detect whether to receive the sound that the data server is returned according to the probe messages by the data link
Message is answered, when receiving the response message, record receives the time of reception of the response message；
The propagation delay time of the data link is determined according to the delivery time and the time of reception；
The minimum data link of propagation delay time is selected from least two data links.
Wherein, the minimum data link of selection propagation delay time from least two data links, including：
It is if there is the data link that at least two propagation delay times are minimum, then minimum at least two propagation delay time
Data link in each data link, according to whether by the data link receive the data server according to
The information for the response message that the probe messages are returned determines the packet loss of the data link；
The minimum data link of packet loss is selected from the minimum data link of at least two propagation delay times.
Second aspect according to embodiments of the present invention is there is provided a kind of message process device, applied to routing device, the dress
Put including：
First receiving module, the DNS response messages for receiving name server return, the DNS response messages are carried
The IP address of data server；
Acquisition module, for obtaining a plurality of between the routing device and the data server according to the IP address
Data link；
Selecting module, for selecting to allow to use and idle bandwidth highest Data-Link from a plurality of data link
Road；
Determining module, is the IP address for the data link of the selection to be defined as transfer destination address
The destination data link of request of data message.
Further, described device also includes：
First forwarding module, for forwarding the DNS response messages to terminal；So that the terminal receive it is described
After DNS response messages, target data request message is sent to the routing device, what the target data request message was carried
Purpose IP address is the IP address of the data server.
Further, described device also includes：
Second receiving module, the target data request message sent for receiving terminal；
Second forwarding module, for forwarding the target data to the data server using the destination data link
Request message.
Wherein, the selecting module includes：
First acquisition unit, the use state for obtaining each data link in a plurality of data link, makes
Include prohibitting the use of with state and allow to use；
First choice unit, for selecting use state to be the Data-Link that allows to use from a plurality of data link
Road；
Second acquisition unit, for being the data link for allowing to use for each use state, obtains the data
The fixed-bandwidth of link and current occupied flow；Subtract each other unit, for by the fixed-bandwidth and the current occupied stream
Amount subtracts each other the idle bandwidth for obtaining the data link；
Second selecting unit, for being to allow to select idle bandwidth highest number in the data link used in use state
According to link.
Wherein, second selecting unit includes：
Transmission sub-unit, for if there is at least two idle bandwidth highest data link, then for it is described at least
Each data link in two data link, sends probe messages, and remember by the data link to data server
Record sends the delivery time of the probe messages；
Receiving subelement, is visited for detecting whether receiving the data server by the data link according to described
The response message of text return is observed and predicted, when receiving the response message, record receives the time of reception of the response message；
Determination subelement, during for determining the transmission of the data link according to the delivery time and the time of reception
Prolong；
Subelement is selected, for selecting the minimum data link of propagation delay time from least two data links.
Wherein, it is described selection subelement specifically for：
It is if there is the data link that at least two propagation delay times are minimum, then minimum at least two propagation delay time
Data link in each data link, according to whether by the data link receive the data server according to
The information for the response message that the probe messages are returned determines the packet loss of the data link；From during described at least two transmission
Prolong and the minimum data link of packet loss is selected in minimum data link.
Technical scheme provided in an embodiment of the present invention can include the following benefits：
In embodiments of the present invention, the DNS response messages that dns server name server is returned, DNS response messages are received
Carry the IP address of data server；Obtain many between routing device and data server according to the IP address of data server
Data link；Selection allows to use and idle bandwidth highest data link from a plurality of data link；By the number of selection
It is defined as the destination data link for transfer destination address for the request of data message of IP address according to link.By of the invention real
The method for applying example, allows to use and idle bandwidth highest data link transmission destination address is IP address using selection afterwards
Request of data message destination data link, and then a plurality of Data-Link between routing device and data server can be realized
The load balancing on road, and then improve link utilization.And without manually participating in during link utilization is improved, manually
Cost is relatively low.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
The embodiment of the present invention can be limited.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the present invention
Example, and be used to together with specification to explain the principle of the embodiment of the present invention.
Fig. 1 is a kind of structural representation of message handling system according to an exemplary embodiment；
Fig. 2 is a kind of flow chart of message processing method according to an exemplary embodiment；
Fig. 3 is a kind of block diagram of message process device according to an exemplary embodiment.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the embodiment of the present invention.On the contrary, they be only with
As be described in detail in the appended claims, embodiment of the present invention some in terms of consistent apparatus and method example.
Fig. 1 is a kind of structural representation of message handling system according to an exemplary embodiment, as shown in figure 1,
The system includes terminal 1, routing device 2, name server 3 and data server 4.
Existing between terminal 1 and routing device 2 can be using the two between data link, therefore terminal 1 and routing device 2
Between data link realize data interaction.There is data link between routing device 2 and name server 3, therefore route is set
It is standby to realize data interaction using data link therebetween between 2 and name server 3.Routing device 2 takes with data
There is a plurality of data link between business device 3, can be using therebetween between routing device 2 and data server 3 it is any one
Data link realizes data interaction.
When terminal 1 transmits data to name server 3, it is necessary to forward the data to domain name service by routing device 2
In device 3, correspondingly, when name server 3 transmits data to terminal 1, it is necessary to forward the data to terminal by routing device 2
In 1.
Similarly, when terminal 1 transmits data to data server 4, it is necessary to forward the data to number by routing device 2
According in server 4, correspondingly, when data server 4 transmits data to terminal 1, it is necessary to by routing device 2 by data forwarding
Into terminal 1.
Fig. 2 is a kind of flow chart of message processing method according to an exemplary embodiment, as shown in Fig. 2 the party
Method is used in routing device, and this method comprises the following steps.
In step S101, the DNS response messages that name server is returned are received, DNS response messages carry data, services
The IP address of device；
In embodiments of the present invention, user is generally surfed the Net using terminal, when user needs to utilize a certain webpage of terminal access
When, user needs to input the domain name of the webpage in the terminal first, for example, www.baidu.com or www.taobao.com
Deng.Terminal obtains the domain name of the webpage of user's input, and is obtained and be stored with from name server according to the domain name of the webpage
The IP address (Internet Protocol Address, Internet protocol address) of the data server of the data of the webpage, enters
And the IP address further according to data server obtains the webpage from data server, and show on the screen of terminal the net
Page, so that user browses.
Wherein, in order to the data, services of the webpage that is stored with are obtained from name server according to the domain name of the webpage
The IP address of device, terminal needs to generate DNS request message according to the domain name of the webpage, and sends DNS request report to routing device 2
Text；Routing device is received after DNS request message, will forward DNS response messages to name server；Work as name server
After receiving DNS response messages, the domain Name acquisition data for the webpage that name server will be carried according to DNS request message
The IP address of server, and IP address and the domain name generation DNS response messages of the webpage according to data server, then to road
DNS response messages are returned to by equipment；Routing device is received after DNS response messages, carries out step S102.
Secondly, routing device also needs to forward DNS response messages to terminal；Terminal is receiving DNS response messages afterwards
Afterwards, it is possible to the IP address of data server is extracted from DNS response messages, and is visited according to the IP address of data server
Ask the webpage.When accessing the webpage according to the IP address of data server, terminal can send target data to routing device
Request message, the purpose IP address that target data request message is carried is the IP address of data server.
In step s 102, obtain a plurality of between routing device and data server according to the IP address of data server
Data link；
In embodiments of the present invention, there is a plurality of data link between routing device and data server, routing device with
Data interaction can be realized by any one data link in a plurality of data link between server.
Wherein, each data link between routing device and data server is that one on routing device goes out
What an ingress port on mouth port and data server was carried.Therefore, between routing device and data server
Any one data link, in advance can be by going out on routing device of the IP address of data server with carrying the data link
Mouth port constitutes a record, and is stored in the corresponding relation between IP address and outlet port.For for routing device
Any one data link between data server, equally performs aforesaid operations.
So, in this step, after the IP address of data server is obtained, it can be searched in above-mentioned corresponding relation
The all outlet ports port corresponding with the IP address of data server, then obtains what each outlet port found was carried
Data link, that is, obtain a plurality of data link between routing device and data server.
In step s 103, selection allows to use and idle bandwidth highest data link from a plurality of data link；
In this step, the use state of each data link in a plurality of data link, use state can be obtained
Used including prohibitting the use of and allowing；Use state is selected to be the data link for allowing to use from a plurality of data link；For
Each use state is the data link for allowing to use, and obtains the fixed-bandwidth and current occupied flow of data link, will
Fixed-bandwidth subtracts each other the idle bandwidth for obtaining data link with current occupied flow；It is the data for allowing to use in use state
Idle bandwidth highest data link is selected in link.
In an alternative embodiment of the invention, it is possible to there are at least two idle bandwidth highest data link, if deposited
, then, can for each data link at least two data link at least two idle bandwidth highest data link
To send probe messages to data server by the data link, and record the delivery time for sending probe messages；Detection is
It is no that the response message that data server is returned according to probe messages is received by the data link, when receiving response message
When, record receives the time of reception of response message；The propagation delay time of data link is determined according to delivery time and the time of reception；
The minimum data link of propagation delay time is selected from least two data links.Select the minimum data link of propagation delay time can be with
Propagation delay time when data interaction is carried out between routing device and data server is reduced, and then reduces terminal and data server
Between carry out data interaction when propagation delay time.
In still another embodiment of the process, it is possible to there is the minimum data link of at least two propagation delay times, if deposited
In the data link that at least two propagation delay times are minimum, then for each in the minimum data link of at least two propagation delay times
Data link, according to whether receiving the response message that data server is returned according to probe messages by the data link
Information determines the packet loss of data link；The minimum number of packet loss is selected from the minimum data link of at least two propagation delay times
According to link.The minimum data link of selection packet loss can be avoided as much as between routing device and data server entering line number
According to interaction when loss of data, and then be avoided as much as between terminal and data server carry out data interaction when data lose
Lose.
In step S104, the data link of selection is defined as the request of data for transfer destination address for IP address
The destination data link of message.
Further, after terminal obtains the IP address of data server, if necessary to real between data server
Existing data interaction, then can send target data request message, the purpose IP that target data request message is carried to routing device
Address is the IP address of data server.The target data request message that routing device receiving terminal is sent；Utilize target data
Chain road direction data server forwards target data request message.When data server receives target data request message, just
Target data response message can be generated according to target data request message, and then target data response is sent to routing device and is reported
Text.After routing device receives target data response message, target data response message will be forwarded to terminal.Terminal connects
Target target response message is received, data interaction is carried out between terminal and data server so as to realize.
In embodiments of the present invention, the DNS response messages that dns server name server is returned, DNS response messages are received
Carry the IP address of data server；Obtain many between routing device and data server according to the IP address of data server
Data link；Selection allows to use and idle bandwidth highest data link from a plurality of data link；By the number of selection
It is defined as the destination data link for transfer destination address for the request of data message of IP address according to link.By of the invention real
The method for applying example, allows to use and idle bandwidth highest data link transmission destination address is IP address using selection afterwards
Request of data message destination data link, and then a plurality of Data-Link between routing device and data server can be realized
The load balancing on road, and then improve link utilization.And without manually participating in during link utilization is improved, manually
Cost is relatively low.
Fig. 3 is a kind of block diagram of message process device according to an exemplary embodiment.Reference picture 3, the device bag
Include：
First receiving module 11, the DNS response messages for receiving name server return, the DNS response messages are taken
IP address with data server；
Acquisition module 12, for obtaining many between the routing device and the data server according to the IP address
Data link；
Selecting module 13, for selecting to allow to use and idle bandwidth highest data from a plurality of data link
Link；
Determining module 14, is the IP address for the data link of the selection to be defined as being used for transfer destination address
Request of data message destination data link.
Further, described device also includes：
First forwarding module, for forwarding the DNS response messages to terminal；So that the terminal receive it is described
After DNS response messages, target data request message is sent to the routing device, what the target data request message was carried
Purpose IP address is the IP address of the data server.
Further, described device also includes：
Second receiving module, the target data request message sent for receiving terminal；
Second forwarding module, for forwarding the target data to the data server using the destination data link
Request message.
Wherein, the selecting module 13 includes：
First acquisition unit, the use state for obtaining each data link in a plurality of data link, makes
Include prohibitting the use of with state and allow to use；
First choice unit, for selecting use state to be the Data-Link that allows to use from a plurality of data link
Road；
Second acquisition unit, for being the data link for allowing to use for each use state, obtains the data
The fixed-bandwidth of link and current occupied flow；Subtract each other unit, for by the fixed-bandwidth and the current occupied stream
Amount subtracts each other the idle bandwidth for obtaining the data link；
Second selecting unit, for being to allow to select idle bandwidth highest number in the data link used in use state
According to link.
Wherein, second selecting unit includes：
Transmission sub-unit, for if there is at least two idle bandwidth highest data link, then for it is described at least
Each data link in two data link, sends probe messages, and remember by the data link to data server
Record sends the delivery time of the probe messages；
Receiving subelement, is visited for detecting whether receiving the data server by the data link according to described
The response message of text return is observed and predicted, when receiving the response message, record receives the time of reception of the response message；
Determination subelement, during for determining the transmission of the data link according to the delivery time and the time of reception
Prolong；
Subelement is selected, for selecting the minimum data link of propagation delay time from least two data links.
Wherein, it is described selection subelement specifically for：
It is if there is the data link that at least two propagation delay times are minimum, then minimum at least two propagation delay time
Data link in each data link, according to whether by the data link receive the data server according to
The information for the response message that the probe messages are returned determines the packet loss of the data link；From during described at least two transmission
Prolong and the minimum data link of packet loss is selected in minimum data link.
In embodiments of the present invention, the DNS response messages that dns server name server is returned, DNS response messages are received
Carry the IP address of data server；Obtain many between routing device and data server according to the IP address of data server
Data link；Selection allows to use and idle bandwidth highest data link from a plurality of data link；By the number of selection
It is defined as the destination data link for transfer destination address for the request of data message of IP address according to link.By of the invention real
The method for applying example, allows to use and idle bandwidth highest data link transmission destination address is IP address using selection afterwards
Request of data message destination data link, and then a plurality of Data-Link between routing device and data server can be realized
The load balancing on road, and then improve link utilization.And without manually participating in during link utilization is improved, manually
Cost is relatively low.
On the device in above-described embodiment, wherein modules perform the concrete mode of operation in relevant this method
Embodiment in be described in detail, explanation will be not set forth in detail herein.
Those skilled in the art will readily occur to its of the present invention after considering specification and putting into practice invention disclosed herein
Its embodiment.The application is intended to any modification, purposes or the adaptations of the embodiment of the present invention, these modifications,
Purposes or adaptations follow the general principle of the embodiment of the present invention and including undocumented skill of the embodiment of the present invention
Common knowledge or conventional techniques in art field.Description and embodiments are considered only as exemplary, the embodiment of the present invention
True scope and spirit pointed out by appended claim.
It should be appreciated that the accurate knot that the embodiment of the present invention is not limited to be described above and is shown in the drawings
Structure, and various modifications and changes can be being carried out without departing from the scope.The scope of the embodiment of the present invention is only by appended right
It is required that to limit.
Claims (12)
1. a kind of message processing method, applied to routing device, it is characterised in that methods described includes：
The DNS response messages that name server is returned are received, the DNS response messages carry the IP address of data server；
A plurality of data link between the routing device and the data server is obtained according to the IP address；
Selection allows to use and idle bandwidth highest data link from a plurality of data link；
The data link of the selection is defined as the mesh for transfer destination address for the request of data message of the IP address
Mark data link.
2. according to the method described in claim 1, it is characterised in that methods described also includes：
The DNS response messages are forwarded to terminal；So that the terminal is after the DNS response messages are received, to described
Routing device sends target data request message, and the purpose IP address that the target data request message is carried takes for the data
The IP address of business device.
3. method according to claim 2, it is characterised in that methods described also includes：
The target data request message that receiving terminal is sent；
Using the destination data link target data request message is forwarded to the data server.
4. the method according to any one of claim 1-3 claim, it is characterised in that described from a plurality of Data-Link
Selection allows to use and idle bandwidth highest data link in road, including：
The use state of each data link in a plurality of data link is obtained, use state includes prohibitting the use of and permitting
Permitted to use；
Use state is selected to be the data link for allowing to use from a plurality of data link；
It is the data link for allowing to use for each use state, the fixed-bandwidth of the acquisition data link and currently quilt
Flow is taken, the fixed-bandwidth and the current occupied flow are subtracted each other to the idle bandwidth for obtaining the data link；
It is to allow to select idle bandwidth highest data link in the data link used in use state.
5. method according to claim 4, it is characterised in that described in use state is to allow the data link that uses
Idle bandwidth highest data link is selected, including：
If there is at least two idle bandwidth highest data link, then for each at least two data link
Data link, sends probe messages, and record the transmission probe messages by the data link to data server
Delivery time；
Detect whether to receive the response report that the data server is returned according to the probe messages by the data link
Text, when receiving the response message, record receives the time of reception of the response message；
The propagation delay time of the data link is determined according to the delivery time and the time of reception；
The minimum data link of propagation delay time is selected from least two data links.
6. method according to claim 5, it is characterised in that described that transmission is selected from least two data links
The minimum data link of time delay, including：
If there is the data link that at least two propagation delay times are minimum, then for the minimum number of at least two propagation delay time
According to each data link in link, according to whether receiving the data server according to described by the data link
The information for the response message that probe messages are returned determines the packet loss of the data link；
The minimum data link of packet loss is selected from the minimum data link of at least two propagation delay times.
7. a kind of message process device, applied to routing device, it is characterised in that described device includes：
First receiving module, the DNS response messages for receiving name server return, the DNS response messages carry data
The IP address of server；
Acquisition module, for obtaining many datas between the routing device and the data server according to the IP address
Link；
Selecting module, for selecting to allow to use and idle bandwidth highest data link from a plurality of data link；
Determining module, for the data link of the selection to be defined as to the data for transfer destination address for the IP address
The destination data link of request message.
8. device according to claim 7, it is characterised in that described device also includes：
First forwarding module, for forwarding the DNS response messages to terminal；So that the terminal is receiving the DNS sound
Answer after message, target data request message, the purpose that the target data request message is carried are sent to the routing device
IP address is the IP address of the data server.
9. device according to claim 8, it is characterised in that described device also includes：
Second receiving module, the target data request message sent for receiving terminal；
Second forwarding module, for forwarding the target data to ask to the data server using the destination data link
Message.
10. the device according to any one of claim 7-9 claim, it is characterised in that the selecting module includes：
First acquisition unit, the use state for obtaining each data link in a plurality of data link, uses shape
State includes prohibitting the use of and allowing to use；
First choice unit, for selecting use state to be the data link that allows to use from a plurality of data link；
Second acquisition unit, for being the data link for allowing to use for each use state, obtains the data link
Fixed-bandwidth and current occupied flow；Subtract each other unit, for by the fixed-bandwidth and the current occupied flow phase
Subtract the idle bandwidth for obtaining the data link；
Second selecting unit, for being to allow to select idle bandwidth highest Data-Link in the data link used in use state
Road.
11. device according to claim 10, it is characterised in that second selecting unit includes：
Transmission sub-unit, for if there is at least two idle bandwidth highest data link, then for described at least two
Each data link in data link, sends probe messages, and record hair by the data link to data server
Send the delivery time of the probe messages；
Receiving subelement, is reported for detecting whether receiving the data server by the data link according to the detection
The response message that text is returned, when receiving the response message, record receives the time of reception of the response message；
Determination subelement, the propagation delay time for determining the data link according to the delivery time and the time of reception；
Subelement is selected, for selecting the minimum data link of propagation delay time from least two data links.
12. device according to claim 11, it is characterised in that the selection subelement specifically for：
If there is the data link that at least two propagation delay times are minimum, then for the minimum number of at least two propagation delay time
According to each data link in link, according to whether receiving the data server according to described by the data link
The information for the response message that probe messages are returned determines the packet loss of the data link；From at least two propagation delay times most
The minimum data link of packet loss is selected in low data link.
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