CN110278289A - Network system, the method and apparatus and dns server for accessing local area network - Google Patents

Network system, the method and apparatus and dns server for accessing local area network Download PDF

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Publication number
CN110278289A
CN110278289A CN201910499835.9A CN201910499835A CN110278289A CN 110278289 A CN110278289 A CN 110278289A CN 201910499835 A CN201910499835 A CN 201910499835A CN 110278289 A CN110278289 A CN 110278289A
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CN
China
Prior art keywords
website
address
server
client
localdns
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CN201910499835.9A
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Chinese (zh)
Inventor
徐强
张俊
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Shanghai Lake Information Technology Co Ltd
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Shanghai Lake Information Technology Co Ltd
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Priority to CN201910499835.9A priority Critical patent/CN110278289A/en
Publication of CN110278289A publication Critical patent/CN110278289A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06Management of faults, events, alarms or notifications
    • H04L41/0654Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0663Performing the actions predefined by failover planning, e.g. switching to standby network elements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/45Network directories; Name-to-address mapping
    • H04L61/4505Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
    • H04L61/4511Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

This application involves technical field of the computer network more particularly to a kind of network systems, the method and apparatus and dns server that access local area network.Wherein, network system includes: local domain name system LocalDNS server, at least two for transmitting the website of access request;The LocalDNS server is used to select a website from least two websites after the DNS request for receiving client transmission, and the address of the website of selection is sent to the client, so that the client accesses according to the address of the website.Above system accesses local area network due to using at least two websites, and when a site disasters, client can also be accessed local area network using other websites, improves the success rate of access of the client for local area network.

Description

Network system, the method and apparatus and dns server for accessing local area network
Technical field
This application involves technical field of the computer network, more particularly to the side of a kind of network system, access local area network Method and device and dns server.
Background technique
Domain name system (Domain Name System DNS) server is mainly used for completing from domain name to Internet protocol The mapping of the address (Internet Protocol IP).The website of large-scale portal website all receives big all the time daily The access of the user of amount.It is all specifically that domain name mapping progress is carried out by the local dns server of user.It specifically includes, The most straightforward procedure of customer access network is that required address is written in browser, wherein the address of website is usually by alphabetical group At convenient for user's memory.Local domain name system Local dns server finds the number in corresponding website according to the domain name of website According to the address of server, the computer of user is according to the address of data server, along specific path access to data server, Data are obtained from data server.
User accesses the website of some websites, the website of the website only one, access path must pass through Intra-site Link be accessed data server.If accessing load excessive, which also will cause network congestion, and user cannot It is enough to obtain data in time.
In the prior art, if some website of the website of user's access breaks down, such as the link hair of Intra-site Raw failure, then user just can not will result in the mistake of access by the data server of specific path access to Intra-site It loses, it is impossible to ensure that the continuity of business.
Summary of the invention
The method and apparatus and NDS server that the embodiment of the present application provides a kind of network system, accesses local area network, To solve the technical issues of site disasters in the prior art cause client that can not access.
In a first aspect, the embodiment of the present application provides a kind of network system, comprising: Local dns server, at least two For transmitting the website of access request;
The LocalDNS server is used for after the DNS request for receiving client transmission from least two websites A website is selected, and the address of the website of selection is sent to the client, so that the client is according to the website Address access.
Above system, LocalDNS server are used for after the DNS request for receiving client transmission from least two websites One website of middle selection accesses local area network due to using at least two websites, and when a site disasters, client may be used also To access local area network using other websites, the success rate of client access local area network is improved.
Second aspect, the embodiment of the present application provide a kind of method for accessing local area network, comprising:
Local domain name system Local dns server is after the DNS request for receiving client transmission from least two websites One website of middle selection;
The address of the website of selection is sent to the client by the LocalDNS server, so that the client root It accesses according to the address of the website.
The above method, local domain name system Local dns server is after the DNS request for receiving client transmission from least A website is selected in two websites, accesses local area network due to using at least two websites, when a link failure, visitor Family end can also be accessed local area network using other websites.
In one possible implementation, the LocalDNS server selects a station from least two websites Point, comprising:
The LocalDNS server sends address acquisition request to each website according to the address of each website;
The LocalDNS server selects a website from the website for responding the address acquisition request.
The above method, LocalDNS server by each website send address acquisition request, if there is website send out Raw failure, then can not reply response, this is selected from the website being able to respond with regard to having identified the website to break down naturally Website eliminates the website that can not be responded.
In one possible implementation, the LocalDNS server obtains the ground of each website in the following manner Location:
The LocalDNS server obtains the address of each website by authorized DNS server.
The above method, if not caching the address of website in LocalDNS server, LocalDNS server can be from awarding Site address is obtained in power dns server.It avoids in LocalDNS server if not caching site address and leading to visitor The problem of family end access failure.
In one possible implementation, website of the LocalDNS server from the response address acquisition request One website of middle selection, comprising:
LocalDNS server selection from the website for responding the address acquisition request loads the smallest website;Or
The LocalDNS server from the website for responding the address acquisition request selection with belonging to the client Operator the corresponding website of type;
Alternatively, if responding in the website of the address acquisition request LocalDNS service if including home site Device selects home site.
The above method, the selection from the website for responding the address acquisition request of LocalDNS server load the smallest station The access of point, client can be carried out by loading the smallest website, realize the equilibrium of access load.LocalDNS service The type of device operator according to belonging to client determines website corresponding with the type, realizes identical operator Client is accessed using the same website.It responds in the website of the address acquisition request if including home site, institute LocalDNS server selection home site is stated, preferential selection home site is realized.
The third aspect, the embodiment of the present application also provides a kind of local domain name system Local DNS for accessing local area network Server, comprising: including memory and processor, the computer that can be run on the processor is stored on the memory Program, when the computer program is executed by the processor, so that the processor executes following steps:
A website is selected from least two websites after the DNS request for receiving client transmission;
The address of the website of selection is sent to the client so that the client according to the address of the website into Row access.
In one possible implementation, processor is also used to: being sent according to the address of each website to each website Address acquisition request;
A website is selected from the website for responding the address acquisition request.
In one possible implementation, processor is also used to: the ground of each website is obtained by authorized DNS server Location.
In one possible implementation, processor is also used to: being selected from the website for responding the address acquisition request Select the smallest website of load;Or selection and operator belonging to the client from the website for responding the address acquisition request The corresponding website of type;
Alternatively, selecting home site if responding in the website of the address acquisition request if including home site.
Fourth aspect, the embodiment of the present application also provides a kind of devices for accessing local area network, comprising:
Selecting module, for selecting a website from least two websites after the DNS request for receiving client transmission;
Sending module, for the address of the website of selection to be sent to the client, so that the client is according to institute The address for stating website accesses.
5th aspect, the embodiment of the present application also provides a kind of computer readable storage mediums, are stored thereon with computer The step of program, the computer program realizes any one of above-mentioned second aspect method when being executed by processor.
Third technical effect brought by any one implementation into the 5th aspect can be found in corresponding in second aspect Implementation brought by technical effect, details are not described herein again.
Detailed description of the invention
Fig. 1 is a kind of domain name mapping schematic diagram of a scenario provided by the embodiments of the present application;
Fig. 2 is a kind of network system figure provided by the embodiments of the present application;
Fig. 3 is another network system figure provided by the embodiments of the present application;
Fig. 4 is a kind of complete network system figure provided by the embodiments of the present application;
Fig. 5 multilink schematic diagram between LLB provided by the embodiments of the present application and SLB;
Fig. 6 is a kind of method flow diagram for accessing local area network provided by the embodiments of the present application;
Fig. 7 is a kind of complete method flow chart for accessing local area network provided by the embodiments of the present application;
Fig. 8 is a kind of schematic device for accessing local area network provided by the embodiments of the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall in the protection scope of this application.
The application scenarios of the embodiment of the present application description are the technical solutions in order to more clearly illustrate the embodiment of the present application, The restriction for technical solution provided by the embodiments of the present application is not constituted, those of ordinary skill in the art are it is found that with newly answering With the appearance of scene, technical solution provided by the embodiments of the present application is equally applicable for similar technical problem.
Referring to a kind of domain name mapping schematic diagram of a scenario provided by the embodiments of the present application of attached drawing 1;Some websites are accessed in user Scene in, user browser input network address www.xxx.com when, DNS request is dealt into Local DNS (home domain name system System, Local Domain Name System) server;Whether LocalDNS server is checked locally the corresponding of the domain name The caching record of IP (Internet Protocol Address Internet protocol address) address of website, if so, The IP address of website is directly sent to client by LocalDNS server;If LocalDNS server does not have cached IP address, LocalDNS server sends to authorized DNS server and requests;Authorized DNS server receives the request of LocalDNS server Afterwards, the IP address of website is returned into LocalDNS server;The IP address of website is sent to client by LocalDNS server The access at end, client reaches application server by router, and data server obtains data from data server, The data of display data server on the page of client.But if number can not be just accessed in client when site disasters According to server, so that access be caused to fail.
Based on this, the embodiment of the present application provides a kind of network system, referring to a kind of attached network system signal shown in Fig. 2 Figure, which includes: Local dns server 201 and multiple websites;Multiple websites include website 1 to website n, n be greater than etc. In 2 integer.
The purpose that multiple websites are arranged is in order to be mutually backups, also for access load is shared, when the visit of a website When asking load excessive, access is received using the others access lesser website of duty factor.
It is another network system provided by the embodiments of the present application referring to attached drawing 3 so that the quantity of website is set as two as an example System figure;It include home site 302 and standby website 303 in the system;In order to realize load equilibrium, also set up in each website GSLB (global load balancing, Global Server Load Balance) equipment, the GSLB is for realizing website and website Between load equilibrium.
The LocalDNS server is used for after the DNS request for receiving client transmission from least two websites A website is selected, and the address of the website of selection is sent to the client, so that the client is according to the website Address access.It is emphasized that website as described herein, may be any type of in local area network, including data The heart.In following description, website can be substituted for data center.Data center is a whole set of complicated facility, not only includes Computer system and other matched equipment, also the data communication connection comprising redundancy, environmental control equipment, monitoring device And various safety devices etc..The address of home site 302 and standby website 303 has been stored in advance in authorized DNS server, when When LocalDNS server is inquired to authorized DNS server when the address of website, authorized DNS server is by home site 302 and standby The address of website 303 is sent to LocalDNS server.Above system, LocalDNS server are receiving client transmission A website is selected after DNS request from least two websites, local area network is accessed due to using at least two websites, when one When a site disasters, client can also be accessed local area network using other websites, improve client for local area network Access success rate.
In order to detailed further, referring to a kind of attached complete network diagram shown in Fig. 4, which includes: authorization Dns server, LocalDNS server and website A and website B;Website A is home site, and website B is standby website, standby website B and Structure inside home site A is identical, if home site A failure, the accessible standby website B of user.
Each Intra-site is provided with LLB (balancing link load, Link Load Balance) equipment and SLB (clothes Business device load balancing, Server Load Balance).Multilink is provided between LLB and SLB, referring to shown in attached drawing 5 LLB and SLB between multilink schematic diagram;It is provided with three links between LLB and SLB, is followed successively by link 1, link 2 and chain More links can also be arranged in road 3;One the smallest link of load of LLB selection, such as the load of link 1 are minimum, and LLB is true It is fixed that access request is transmitted to SLB by link 1.
When user accesses A website, access request successively passes through LLB equipment, SLB equipment, interchanger, application in website A Server reaches data server.
After access request reaches the LLB equipment in A website, LLB equipment selects one most according to link selection algorithm Good link sends access request;Wherein optimal link is the smallest link of load, it is emphasized that LLB equipment is also It can connect another website, for sending another website for the load of access.
After access request reaches SLB equipment by optimal link, SLB equipment selects an optimal data service Device sends the access request on the data server;Wherein, optimal data server is the smallest data service of load Device.
Corresponding with above-mentioned system, present applicant proposes a kind of methods for accessing local area network, referring to attached shown in fig. 6 one The method flow diagram of kind access local area network, this method comprises:
Step S601, Local dns server is selected from least two websites after the DNS request for receiving client transmission Select a website;
Wherein, the quantity of website is at least two, and Local dns server can select a station from multiple websites Point allows the selected website of the access of client to client.
Step S602, the address of the website of selection is sent to the client by the LocalDNS server, so that institute Client is stated to be accessed according to the address of the website.
The above method, Local dns server are selected from least two websites after the DNS request for receiving client transmission A website is selected, due to using at least two websites, when a site disasters, client can also be using other websites It accesses.
In a kind of possible embodiment, the LocalDNS server obtains the ground of each website in the following manner Location: the LocalDNS server obtains the address of each website by authorized DNS server.
When it is implemented, local whether save judged after LocalDNS server receives the DNS request that client is sent There is site address, if so, LocalDNS server sends Address requests to each website;If local do not have cache client The address for the website to be accessed, then IP address acquisition request of the LocalDNS server to authorized DNS server transmitting station; Authorized DNS server sends the IP address of each website to LocalDNS server;LocalDNS server obtains site address Afterwards, then to each website Address requests are sent.
After each website receives the Address requests of LocalDNS server transmission, sends and ring to LocalDNS server It answers.The LocalDNS server selects a website from the website for responding the address acquisition request.
Wherein, the quantity of website is multiple, if failure has occurred in part of website, the website of failure will not be responded The request that the LocalDNS server is sent, only chooses website from the website of response, eliminates failure website.
When the LocalDNS server selects a website from the website for responding the address acquisition request, have following Three kinds of embodiments:
In a kind of possible embodiment, website of the LocalDNS server from the response address acquisition request When one website of middle selection, LocalDNS server selection load from the website for responding the address acquisition request is minimum Website;
In the specific implementation, the load of place website is sent to the LocalDNS and serviced by the GSLB equipment of each website Device, the selection of LocalDNS server load the smallest website, the IP address for loading the smallest website are sent to client, so that The client access the smallest website of load.
Concrete example explanation below, it is assumed that the quantity of website is 3, respectively website 1, website 2 and website 3;Access is negative Carry to be the quantity or flow of the user of the access in a period of time;Below with the quantity of user for example:
The access load of website 1 is sent to LocalDNS server, number of users 100 by the GSLB in website 1;
The access load of website 2 is sent to LocalDNS server by the GSLB in website 2, and access load is 200;
The access load of website 3 is sent to LocalDNS server by the GSLB in website 3, and access load is 300;
LocalDNS is compared judgement, determines that the load of website 1 is the smallest, it is determined that use website 1 for client Offer service is provided, the address of website 1 is sent to client.
In another embodiment, belonging to website of the LocalDNS server from the response address acquisition request Website in select a website when, the type of LocalDNS server operator according to belonging to client determine with The corresponding website of the type, is sent to the client for the address of the website.
Wherein, LocalDNS server internal stores the IP address of client and the mapping table of operator, according to The IP address of client is assured that out that the operator of the client, operator include China Mobile, middle League of Nations by tabling look-up Logical or China Telecom.
It illustrates in detail below, it is assumed that website A specially receives user's access of China Mobile;During website B is specially received The user of state's connection accesses;The IP address of user and the corresponding relationship of operator are stored in LocalDNS server internal, such as Fruit determines that user A is China Mobile user according to the address of user A, it is determined that website 1 provides service for user A, by website 1 Address be sent to user A;If determining that user A is the user of China Unicom according to the address of user A, it is determined that website B Service is provided for user A, the address of website B is sent to user A.
In another embodiment, belonging to website of the LocalDNS server from the response address acquisition request Website in when selecting a website, respond in the website of the address acquisition request if including home site, it is described LocalDNS server selects home site.
It wherein, include home site in multiple websites if LocalDNS server receives the response that multiple websites are sent, Home site is then preferentially selected, the address of home site is sent to client, so that client accesses home site.If home site Load excessive is accessed, then from remaining standby website, the standby website for selecting a load minimum will load minimum standby website and send out Give client.
In conjunction with attached drawing 4, a kind of method that complete access website is described below, referring to a kind of attached access office shown in Fig. 7 The complete method flow chart of domain network, this method comprises:
Step S701, when user accesses some websites input domain name, DNS request is dealt into LocalDNS server;
Step S702, Local dns server checks the caching record of the local address for whether having the domain name, if so, The step of thening follow the steps S705, otherwise, execute S703 the step of;
Step S703, Local dns server sends to the authorized DNS server of Domain Name Registrar and requests;
After authorized DNS server receives the request of Local dns server, IP address is all returned to by step S704 Local dns server;
The IP address of website A are as follows: 10.10.10.10;The IP address of website B are as follows: 11.11.11.11.
Step S705, Local dns server initiates the inquiry to website A and the address website B, until request to inquiry knot Fruit;
After GSLB equipment in step S706, website A and website B receives the inquiry request of Local dns server respectively, The IP address of place website is returned into Local DNS, wherein website A and website B can be respectively received Local simultaneously The inquiry request that dns server is sent can also successively receive the inquiry request of Local dns server transmission.
Wherein, if website A failure, website A can not be responded, only website B is responded.If there is multiple Website, Local dns server only select website from the website of response, eliminate the website of failure.
After step S707, Local dns server receives response, parsing result is returned into client, and is cached to this Ground;
Assuming that the GSLB equipment in only website A returns to the address of A website, then user will pass through A site access;
Step S708, SLB equipment will enter the access request load distribution of website to Web stratum server group;
Step S709, Web stratum server group will access database server of the load distribution to Intranet service area.
Corresponding with above-mentioned LocalDNS server, present applicant proposes a kind of devices for accessing local area network, referring to attached A kind of schematic device accessing local area network shown in Fig. 8, the device include:
Selecting module 801, for selecting a station from least two websites after the DNS request for receiving client transmission Point;
Sending module 802, for the address of the website of selection to be sent to the client so that the client according to The address of the website accesses.
In a kind of possible embodiment, the selecting module 801 is also used to: according to the address of each website to each Website sends address acquisition request;
A website is selected from the website for responding the address acquisition request.
In a kind of possible embodiment, selecting module 801 is also used to: obtaining the ground of each website in the following manner Location:
The LocalDNS server obtains the address of each website by authorized DNS server.
In a kind of possible embodiment, selecting module 801 is also used to: from the website for responding the address acquisition request Middle selection loads the smallest website;
Or from the website for responding the address acquisition request selection and operator belonging to the client type pair The website answered;
If or respond in the website of the address acquisition request if including home site, select home site.
The embodiment of the present invention also provides a kind of computer-readable non-volatile memory medium, including program code, when described When program code is run on the computing device, said program code is above-mentioned for making the calculating equipment execute the embodiment of the present invention The step of method.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.
The application be referring to according to the present processes, equipment (system) and computer program product flow chart and/or Block diagram describes.It should be understood that each process that can be realized by computer program instructions in flowchart and/or the block diagram and/or The combination of process and/or box in box and flowchart and/or the block diagram.It can provide these computer program instructions to arrive General purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices processor to generate one Machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for realizing flowing The device for the function of being specified in journey figure one process or multiple processes and/or block diagrams one box or multiple boxes.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies Within, then the application is also intended to include these modifications and variations.

Claims (10)

1. a kind of network system characterized by comprising local domain name system Local dns server, at least two are for passing The website of access request is passed,
The LocalDNS server is used to select from least two websites after the DNS request for receiving client transmission One website, and the address of the website of selection is sent to the client, so that ground of the client according to the website Location accesses.
2. a kind of method for accessing local area network, which is characterized in that the described method includes:
Local domain name system Local dns server is selected from least two websites after the DNS request for receiving client transmission Select a website;
The address of the website of selection is sent to the client by the LocalDNS server, so that the client is according to institute The address for stating website accesses.
3. method according to claim 2, which is characterized in that the LocalDNS server is selected from least two websites One website, comprising:
The LocalDNS server sends address acquisition request to each website according to the address of each website;
The LocalDNS server selects a website from the website for responding the address acquisition request.
4. method as claimed in claim 3, which is characterized in that the LocalDNS server obtains each in the following manner The address of website:
The LocalDNS server obtains the address of each website by authorized DNS server.
5. method as claimed in claim 3, which is characterized in that the LocalDNS server is asked from the address acquisition is responded A website is selected in the website asked, comprising:
LocalDNS server selection from the website for responding the address acquisition request loads the smallest website;Or
The LocalDNS server selection and fortune belonging to the client from the website for responding the address acquisition request Seek the corresponding website of type of quotient;Or
If responding in the website of the address acquisition request if including home site, the LocalDNS server selects main website Point.
6. a kind of local domain name system Local dns server for accessing local area network characterized by comprising including storage Device and processor are stored with the computer program that can be run on the processor on the memory, when the computer journey When sequence is executed by the processor, so that the processor executes following steps:
A website is selected from least two websites after the DNS request for receiving client transmission;
The address of the website of selection is sent to the client, so that the client is visited according to the address of the website It asks.
7. local domain name system Local dns server as claimed in claim 6, which is characterized in that processor is also used to:
Address acquisition request is sent to each website according to the address of each website;
A website is selected from the website for responding the address acquisition request.
8. local domain name system Local dns server as claimed in claim 7, which is characterized in that processor is also used to, and is led to Cross the address that authorized DNS server obtains each website.
9. local domain name system Local dns server as claimed in claim 7, which is characterized in that processor is also used to:
Selection loads the smallest website from the website for responding the address acquisition request;Or
The selection station corresponding with the type of operator belonging to the client from the website for responding the address acquisition request Point;
Alternatively, selecting home site if responding in the website of the address acquisition request if including home site.
10. a kind of device for accessing local area network characterized by comprising
Selecting module, for selecting a website from least two websites after the DNS request for receiving client transmission;
Sending module, for the address of the website of selection to be sent to the client, so that the client is according to the station The address of point accesses.
CN201910499835.9A 2019-06-11 2019-06-11 Network system, the method and apparatus and dns server for accessing local area network Pending CN110278289A (en)

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