CN107995107A - One kind combats a natural disaster to become campus network DNS systems and its combats a natural disaster change method - Google Patents
One kind combats a natural disaster to become campus network DNS systems and its combats a natural disaster change method Download PDFInfo
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- CN107995107A CN107995107A CN201810010068.6A CN201810010068A CN107995107A CN 107995107 A CN107995107 A CN 107995107A CN 201810010068 A CN201810010068 A CN 201810010068A CN 107995107 A CN107995107 A CN 107995107A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000000694 effects Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000000977 initiatory effect Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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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
- H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
-
- 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
-
- 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]
-
- 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
- H04L61/4552—Lookup mechanisms between a plurality of directories; Synchronisation of directories, e.g. metadirectories
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1023—Server selection for load balancing based on a hash applied to IP addresses or costs
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
Combat a natural disaster to become campus network DNS systems the invention discloses one kind and its combat a natural disaster change method.When the education network circuit of campus network export breaks down, the data flow of the campus network DNS of education network mandate will interrupt, and cause campus network DNS to be parsed to website domain name address outside school, influence access of the campus user to website outside school.The system mainly includes dns server, combats a natural disaster to become DNS gateway modules, load balancing module, education network DNS roots AM access module and calamity for DNS root AM access modules.Combat a natural disaster to become DNS gateway modules by adding, judge when the AM access module of education network DNS roots is broken down, automatically switch to DNS catastrophe operating modes, the pattern solve thes problems, such as that campus network DNS of the colleges and universities in deployment education network mandate since the campus user that the catastrophe of education network DNS root AM access module working statuses triggers can not use this school dns server parsing website outside school, improves anti-accident ability during campus network DNS deployment.
Description
Technical field
Combat a natural disaster to become campus network DNS systems the present invention relates to one kind and its combat a natural disaster change method, the system be related to source address by
Technology and SNMP technologies.
Background technology
DNS (Domain Name System) domain name analysis system, is mainly used for solving Web site www nets in internet
The problem of location IP address corresponding with its matches, is one of basal core service of internet.Chinese education and scientific research computer
Net (abbreviation education network) is China's investment construction, is managed by the Ministry of Education, and the whole nation that construction and operation are undertaken by the colleges and universities that take the lead is academic
Computer interconnected network.During Construction of University campus network, it will usually which selection provides domain name by the campus network DNS of education network mandate
Analysis service, is flowed out and flowed into from education network egress line by the campus network DNS data stream acquiescence of education network mandate.In education network
During egress line catastrophe, the campus network DNS data stream of mandate will interrupt, and cause campus network DNS cannot to domain name outside school
Location is parsed, and influences access of the campus user to website outside school.
In order to solve the campus user that the campus network DNS of University Education net mandate triggers due to the catastrophe of education network egress line
The problem of campus network dns server can not being used to parse website outside school.One kind is devised to combat a natural disaster to become campus network DNS systems and its resist
Catastrophe method, improves anti-accident ability during campus network DNS system deployments.
The content of the invention
Combat a natural disaster to become campus network DNS systems it is an object of the invention to provide one kind and its combat a natural disaster change method, the present invention can be with
, there is calamity in education network DNS root AM access module working statuses in the effective campus network DNS systems solved by education network mandate
During change, the problem of campus user can not parse resource outside school, greatly improve the availability of campus network DNS systems and combat a natural disaster to become
Ability, good guarantee is provided for the stable operation of campus network.
To achieve the above object, the technical scheme is that：One kind combats a natural disaster to become campus network DNS systems, including DNS service
Device, combat a natural disaster to become DNS gateway modules, load balancing module, education network DNS roots AM access module and calamity for the access of DNS roots
Module；
The dns server and combat a natural disaster to become the first network interface of DNS gateway modules and communicate to connect, in the school and outside school domain name
Parsing, the dns server receives Client-initiated DNS request, and is sent to and combats a natural disaster to become DNS gateway modules, receives at the same time
Combat a natural disaster to become network address and IP address that DNS gateway modules obtain, and be sent to user；
Second network interface for combating a natural disaster to become DNS gateway modules is communicated to connect with load balancing module, described to combat a natural disaster to become DNS nets
Close module to be used to detect education network DNS root AM access module working statuses, if the AM access module of education network DNS roots is in just
Normal working status, then the DNS data by education network mandate load balancing module is sent to by switch module；If detect religion
Educate net DNS root AM access modules working status and catastrophe occurs, then provide and combat a natural disaster to become DNS lists, replace original education network mandate
DNS, will combat a natural disaster change DNS data and is sent to load balancing module by switch module；
The load balancing module is respectively with education network DNS roots AM access module and calamity for DNS root AM access modules
Communication connection, the load balancing module are used for when the AM access module of education network DNS roots is in normal operating conditions, will
DNS data send education network DNS root AM access modules to, and catastrophe work shape is in the AM access module of education network DNS roots
During state, it will combat a natural disaster to become DNS data and spread and give calamity for DNS root AM access modules；
The education network DNS roots AM access module is used to connect education network, ensures education network DNS root AM access modules
Network service under normal circumstances；The calamity is used to connect calamity for carrier network for the AM access module of DNS roots, realizes and is teaching
There is net can use when educating net DNS root AM access module catastrophe states.
Further, system according to the present invention, it is described to combat a natural disaster to become DNS gateway modules by control processor, first
Network interface, the second network interface and detecting module composition, combat a natural disaster change DNS gateway modules and are series in campus network dns server routing link,
The control processor is communicated to connect with detecting module, and the control processor is connected by the first network interface with dns server, institute
Control processor is stated to be connected with switch module by the second network interface.
Further, system according to the present invention, first network interface include 1 DNS access gigabit network interface and are used for
Dns server, second network interface include 1 gigabit and export the output that network interface is used for DNS data, and the detecting module includes 1
A gigabit network interface is detected the education network discharge state in load-balancing device for accessing campus network, obtained inspection
State output is surveyed to control processor, control processor is used to analyze and process education network DNS root AM access module normal conditions
The trend of DNS data stream and data source of the calamity for dns address is automatically updated under lower and catastrophic condition.
Further, system according to the present invention, the system comprises double logics route to test, the load balancing
Module is connected by A circuits with education network DNS root AM access modules, and education network DNS root AM access modules working status is just
In the case of often, A circuits are walked in dns resolution request；The load balancing module accesses mould by B circuits and calamity for DNS roots
Block is connected, and in the case of education network DNS root AM access module working status catastrophe, B circuits are walked in dns resolution request.
Further, system according to the present invention, it is described to combat a natural disaster to become DNS nets the system comprises switch module
Module is closed to communicate to connect by switch module and load balancing module.
Present invention also offers it is a kind of combat a natural disaster to become campus network DNS systems combat a natural disaster change method, step is as follows：
(1) DNS request is initiated by user, and DNS data stream is sent to by dns server and combats a natural disaster to become DNS modules, institute
The working status for combating a natural disaster to become the detecting education network DNS root AM access modules of DNS gateway modules is stated, judges education network DNS roots
Whether AM access module working status is normal.
(2) if the AM access module of education network DNS roots is in normal operating conditions, by the DNS data of education network mandate
Spread and give load balancing module, under the action of load balancing module, send the DNS data of education network mandate to education network
DNS root AM access modules, obtain education network DNS root data, obtain network address and IP address；If education network DNS roots
Catastrophe occurs for AM access module working status, combats a natural disaster change DNS gateway module acquisitions and combats a natural disaster to become DNS lists, replaces original education network and award
The DNS data of power, combats a natural disaster to become DNS data and spreads to load balancing module, it is standby that load balancing module sends DNS data to calamity
DNS root AM access modules, obtain calamity for DNS root data, obtain network address and IP address.
(3) effect is bi-directionally connected by link, the network address and IP address that above-mentioned steps 2 are acquired pass to load
Balance module, under the action of switch module, combats a natural disaster to become DNS gateway modules acquisition data flow, and passes to dns server,
Network address and IP address are passed to the user for initiating request by dns server, and user's is normal when being effectively guaranteed generation catastrophe
Communication.
Described combats a natural disaster change method, it is characterised in that：In the step (1), education network DNS root AM access modules are judged
The whether normal method of working status is：When combat a natural disaster become DNS gateway modules receive DNS data stream after, every setting time pair
Whether education network DNS root AM access modules working status normally judges once that education network DNS roots connect if judging three times
Enter module working status exception, then finally judge that catastrophe occurs for education network DNS root AM access modules working status, otherwise, religion
It is normal to educate net DNS root AM access module working statuses.The AM access module of education network DNS roots is normal and the working status of catastrophe
Represent education network network state is normal and catastrophe.
The beneficial effect that the present invention reaches：Combat a natural disaster to become DNS gateway modules by introducing, when education network DNS roots access
When module breaks down, DNS catastrophe operating modes are automatically switched to, in this mode, according to source address routing policy, by DNS
Server is remapped to calamity for domain name mapping is carried out on dns server address, and this addresses the problem occur when education network circuit
During failure, the problem of campus user normally accesses network can be influenced.
Brief description of the drawings
Fig. 1 is to combat a natural disaster to become campus network DNS system connection figures.
Fig. 2 is to combat a natural disaster to become campus network DNS system gateway module connection figures.
Fig. 3 is to combat a natural disaster to become campus network DNS working-flow figures.
Fig. 4 is determining program flow chart.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention will be further described in detail
1. it is to combat a natural disaster to become DNS system connection figures as shown in Figure 1.
(1) combat a natural disaster to become DNS gateway modules by being connected in campus network dns server routing link, when education network exports
During failure, which, which can enable rapidly, combats a natural disaster to become DNS gateway modules, at this moment will just intercept and capture DNS data stream, according to source
Location routing policy, will enable calamity for DNS data source, the data flow of DNS is directed to the calamity of other outbounds for DNS sources
Domain name mapping is carried out, can be the campus network users normally Internet resources of parsing in the school and outside school.
(2) under normal circumstances, DNS data flows away to for A circuits, and DNS request is initiated by user, by dns server,
Combat a natural disaster to become under the action of DNS gateway modules, data flow is transmitted to switch module, under the action of load balancing module, passes through line
Road A, sends DNS data to education network DNS root AM access modules, obtains education network DNS root data, obtain network address and
IP address.Effect is bi-directionally connected by link, load balancing module is being passed to, under the action of switch module, is combating a natural disaster
Become DNS gateway modules and obtain data flow, network address and corresponding IP address are passed to the user for initiating request by dns server.
(3) under catastrophic condition, DNS data flows away to for B circuits, and DNS request is initiated by user, by dns server,
Combat a natural disaster to become under the action of DNS gateway modules, there is provided to combat a natural disaster to become DNS lists, replace original DNS, data flow is transmitted to switch module,
Under the action of load balancing module, by circuit B, send DNS data to calamity standby net DNS root AM access modules, obtain
The standby net DNS root data of calamity, obtain network address and IP address.Effect is bi-directionally connected by link, then passes to load balancing
Module, under the action of switch module, combats a natural disaster to become DNS gateway modules and obtains data flow, and DNS servers are by network address and correspondence
IP passes to the user for initiating request, is effectively guaranteed the normal communication of user when catastrophe occurs.
Combat a natural disaster to become campus network DNS system gateway module connection figures 2. being illustrated in figure 2, mainly include：
(1) control processor：It is responsible for being handled the information of the first network interface, the second network interface, detecting module, calamity is occurring
There is provided during change and combat a natural disaster to become DNS lists, replace original education network mandate DNS, ensure the normal network service of user；At selected control
Device model IBM X3650M4 are managed, system supports network readezvous point bridge joint, the Linux of SNMP, IPTABLES, this hair to be compiled
The bright middle linux kernel version used is 2.4.31.Program is arranged to examine for every 3 seconds with linux timed tasks (crontab)
Survey once, ensure the availability of DNS.
(2) first network interfaces, including 1 DNS access gigabit network interface, for the transmitted in both directions to DNS data；Using SFP-
GE-T gigabit power port SFP modules, SFP-GE-T gigabit power port SFP module dissipations are low, performance is stablized, and transmission rate is up to 1.25G
b/s。
(3) second network interfaces, including 1 gigabit output network interface, the transmitted in both directions for the DNS data between interchanger；
Using RJ45 interfaces.
(4) detecting module, including a network interface with control process chip, for detecting circuit working status, will examine
The state output measured is to control processor；Using TCP232-T modules, TCP232-T modules support serial ports configuration and network
Configuration feature, network interface have adaptive ability.
As shown in figure 3, the work flow diagram for gateway of the present invention.
(1) DNS request (101) is initiated by user, by dns server (102), by combating a natural disaster to become DNS gateway modules
(103) line status is detected, by judging education network DNS root AM access module working statuses, judges whether network is normal
(104)。
(2) if catastrophe does not occur, data flow is transmitted to switch module (106), the effect in load balancing module (107)
Under, send DNS data to education network DNS roots AM access module (108), obtain education network DNS root data, obtain net
Location and IP address (110)；If generation catastrophe, under the action of combating a natural disaster to become DNS gateway modules (103), acquisition combats a natural disaster to become DNS row
Table (105), replaces original DNS, and data flow is transmitted to switch module (106), will under the action of load balancing module (107)
DNS data sends calamity to for DNS roots AM access module (109), obtains calamity for DNS root data, with obtaining network address and IP
Location (110).
(3) effect is bi-directionally connected by link, the network address and IP address (110) that above-mentioned steps 2 are acquired are transmitted
Load balancing module (107) is given, under the action of switch module (106), combats a natural disaster to become DNS gateway modules (103) acquisition data
Network address and IP address (111) are passed to the user for initiating request, are effectively guaranteed generation catastrophe by stream, dns server (102)
When user normal communication.
As shown in figure 4, it is determining program work flow diagram.
(1) (201), when DNS data stream is after combating a natural disaster to become DNS gateway modules, startup judges that education network DNS roots connect
Enter whether module works normally program (201).
(2) (202), judge whether an education network DNS roots AM access module works normally for 3 seconds, if normal work,
DNS data flows trend is switch module (106)；If education network DNS root AM access module working status catastrophe, under execution
One jumps determining program.
(3) (203), judge whether an education network DNS roots AM access module works normally for 6 seconds, if normal work,
DNS data flows trend is switch module (106)；If education network DNS root AM access module working status catastrophe, under execution
One jumps determining program.
(4) (204), judge whether an education network DNS roots AM access module works normally for 9 seconds, if normal work,
DNS data flows trend is switch module (106)；If education network DNS root AM access module working status catastrophe, under execution
One jumps determining program.
(5) (205), after judging three times by (202), (203), (204), education network DNS roots AM access module work
The equal catastrophe of state, acquisition combat a natural disaster to become DNS lists.
The present invention is solved in education network DNS root AM access module working status catastrophe, and campus user can not parse
Outside school the problem of resource, the anti-accident ability of campus network DNS systems is on the one hand improved, on the other hand stablizes fortune for campus network
Row provides guarantee.
Claims (7)
1. one kind combats a natural disaster to become campus network DNS systems, the system mainly includes：Dns server, combat a natural disaster to become DNS gateway modules, bear
Balance module, education network DNS roots AM access module and calamity are carried for DNS root AM access modules；
The dns server and combat a natural disaster to become the first network interface of DNS gateway modules and communicate to connect, for the in the school and outside school solution of domain name
Analysis, the dns server receive Client-initiated DNS request, and are sent to and combat a natural disaster to become DNS gateway modules, while receive and combat a natural disaster
Become network address and IP address that DNS gateway modules obtain, and be sent to user；
Second network interface for combating a natural disaster to become DNS gateway modules is communicated to connect with load balancing module, described to combat a natural disaster to become DNS gateway moulds
Block is used to detect education network DNS root AM access module working statuses, if the AM access module of education network DNS roots is in normal work
Make state, then the DNS data by education network mandate is sent to load balancing module by switch module；If detect education network
Catastrophe occurs for DNS root AM access modules working status, then provides and combat a natural disaster to become DNS lists, replace original education network mandate DNS,
It will combat a natural disaster change DNS data and load balancing module is sent to by switch module；
The load balancing module communicates with education network DNS roots AM access module and calamity for DNS root AM access modules respectively
Connection, the load balancing module is used for when the AM access module of education network DNS roots is in normal operating conditions, by DNS numbers
According to sending education network DNS root AM access modules to, when the AM access module of education network DNS roots is in catastrophe working status,
It will combat a natural disaster to become DNS data and spread and give calamity for DNS root AM access modules；
The education network DNS roots AM access module is used to connect education network, ensures that education network DNS root AM access modules are normal
In the case of network service；The calamity is used to connect calamity for carrier network for the AM access module of DNS roots, realizes in education network
There is net can use during DNS root AM access module catastrophe states.
2. the system as claimed in claim 1, it is characterised in that：It is described to combat a natural disaster to become DNS gateway modules by control processor, first
Network interface, the second network interface and detecting module composition, combat a natural disaster change DNS gateway modules and are series in campus network dns server routing link,
The control processor is communicated to connect with detecting module, and the control processor is connected by the first network interface with dns server, institute
Control processor is stated to be connected with switch module by the second network interface.
3. system as claimed in claim 2, it is characterised in that：First network interface includes 1 DNS access gigabit network interface and is used for
Dns server, second network interface include 1 gigabit and export the output that network interface is used for DNS data, and the detecting module includes 1
A gigabit network interface is detected the education network discharge state in load-balancing device for accessing campus network, obtained inspection
State output is surveyed to control processor, control processor is used to analyze and process education network DNS root AM access module normal conditions
The trend of DNS data stream and data source of the calamity for dns address is automatically updated under lower and catastrophic condition.
4. the system as claimed in claim 1, it is characterised in that：The system comprises double logics route to test, and the load is equal
Weighing apparatus module is connected by A circuits with education network DNS root AM access modules, education network DNS root AM access module working statuses
In the case of normal, A circuits are walked in dns resolution request；The load balancing module is accessed by B circuits and calamity for DNS roots
Module is connected, and in the case of education network DNS root AM access module working status catastrophe, B circuits are walked in dns resolution request.
5. the system as claimed in claim 1, it is characterised in that：It is described to combat a natural disaster to become DNS nets the system comprises switch module
Module is closed to communicate to connect by switch module and load balancing module.
6. a kind of combat a natural disaster change method using system as claimed in claim 1, it is characterised in that：Step is as follows：
(1) DNS request is initiated by user, and DNS data stream is sent to by dns server and combats a natural disaster to become DNS modules, it is described anti-
Catastrophe DNS gateway modules detect the working status of education network DNS root AM access modules, judge that education network DNS roots access
Whether module working status is normal.
(2) if the AM access module of education network DNS roots is in normal operating conditions, the DNS data of education network mandate is spread
Load balancing module is given, under the action of load balancing module, sends the DNS data of education network mandate to education network DNS
Root AM access module, obtains education network DNS root data, obtains network address and IP address；If education network DNS roots access
Catastrophe occurs for module working status, combats a natural disaster change DNS gateway module acquisitions and combats a natural disaster to become DNS lists, replaces original education network mandate
DNS data, combats a natural disaster to become DNS data and spreads and send DNS data to calamity for DNS roots to load balancing module, load balancing module
Catalogue AM access module, obtains calamity for DNS root data, obtains network address and IP address.
(3) effect is bi-directionally connected by link, the network address and IP address that above-mentioned steps 2 are acquired pass to load balancing
Module, under the action of switch module, combats a natural disaster to become DNS gateway modules acquisition data flow, and passes to dns server, DNS clothes
Network address and IP address are passed to the user for initiating request by business device, are effectively guaranteed the normal communication of user when catastrophe occurs.
7. according to claim 6 combat a natural disaster change method, it is characterised in that：In the step (1), education network DNS roots are judged
The whether normal method of catalogue AM access module working status is：When combat a natural disaster become DNS gateway modules receive DNS data stream after, often
Whether education network DNS root AM access modules working status is normally judged once every setting time, if judging education three times
It is abnormal to net DNS root AM access modules working status, then finally judges that education network DNS root AM access modules working status occurs
Catastrophe, otherwise, education network DNS root AM access module working statuses are normal.The AM access module of education network DNS roots is normal and calamity
The working status of change be represent education network network state is normal and catastrophe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010068.6A CN107995107A (en) | 2018-01-05 | 2018-01-05 | One kind combats a natural disaster to become campus network DNS systems and its combats a natural disaster change method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010068.6A CN107995107A (en) | 2018-01-05 | 2018-01-05 | One kind combats a natural disaster to become campus network DNS systems and its combats a natural disaster change method |
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| Publication Number | Publication Date |
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| CN107995107A true CN107995107A (en) | 2018-05-04 |
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ID=62040971
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| CN104468244A (en) * | 2014-12-31 | 2015-03-25 | 北京奇虎科技有限公司 | Domain name resolution system disaster recovery construction method and device |
| CN104639366A (en) * | 2014-12-31 | 2015-05-20 | 北京奇虎科技有限公司 | DNS (domain name server) disaster tolerance system islanding response automatic switching method and device |
| US20170048187A1 (en) * | 2014-04-18 | 2017-02-16 | Beijing Qihoo Technology Company Limited | Dns security system and failure processing method |
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2018
- 2018-01-05 CN CN201810010068.6A patent/CN107995107A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465768A (en) * | 2009-01-12 | 2009-06-24 | 上海及第熊软件科技有限公司 | Method and system for implementing website disaster-tolerating and error-tolerating operation |
| US20170048187A1 (en) * | 2014-04-18 | 2017-02-16 | Beijing Qihoo Technology Company Limited | Dns security system and failure processing method |
| CN104468244A (en) * | 2014-12-31 | 2015-03-25 | 北京奇虎科技有限公司 | Domain name resolution system disaster recovery construction method and device |
| CN104639366A (en) * | 2014-12-31 | 2015-05-20 | 北京奇虎科技有限公司 | DNS (domain name server) disaster tolerance system islanding response automatic switching method and device |
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