CN104639364B - The DHCP backup methods that main Dynamic Host Configuration Protocol server is supported and coordinated are not depended on - Google Patents
The DHCP backup methods that main Dynamic Host Configuration Protocol server is supported and coordinated are not depended on Download PDFInfo
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- CN104639364B CN104639364B CN201410720389.7A CN201410720389A CN104639364B CN 104639364 B CN104639364 B CN 104639364B CN 201410720389 A CN201410720389 A CN 201410720389A CN 104639364 B CN104639364 B CN 104639364B
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Abstract
The invention discloses a kind of DHCP backup methods for not depending on main Dynamic Host Configuration Protocol server and supporting and coordinating, by the DHCP request for receiving user；Judge main Dynamic Host Configuration Protocol server working condition, user's DHCP request bag is transmitted to main Dynamic Host Configuration Protocol server if normal；Start the function of being switched to backup DHCP service if abnormal；Then user's DHCP request bag is transmitted to backup Dynamic Host Configuration Protocol server and monitors response process；DHCP responses are finally transmitted to user terminal；DHCP backups switching system provided by the invention does not depend on main Dynamic Host Configuration Protocol server and supports and coordinate；When main DHCP service is interrupted, start backup DHCP service, the service identical with main DHCP is provided for this part broadband user, distribute and keep the network attribute parameter consistent with main DHCP, the network communication of user is maintained, ensures that user can be connected to internet and obtain address information automatically incessantly.
Description
Technical field
The present invention relates to linking Internet and transmission field, more particularly to one kind does not depend on main Dynamic Host Configuration Protocol server and supports and match somebody with somebody
The DHCP backup methods of conjunction.
Background technology
In the data network of CHINA RFTCOM Co Ltd, according to the planning of General Bureau of Radio, Film and Television, digitisation bidirectional set-top box becomes increasingly popular.It is two-way
Set-top box will realize a multicast function, it is generally the case that need to also provide DHCP service for it by computer room, get ip, mask, net
After the network attributes such as pass, DNS, the data communication between bi-directional set-top box and calculator room equipment could be realized, meanwhile, in CHINA RFTCOM Co Ltd
Part broadband access network user also rely on the DHCP service and could communicate with the computer room gateway device of company of county, pass through company of county
Local internet outlet online, and CHINA RFTCOM Co Ltd company is for ease of unified management, general only to be put in city-level CHINA RFTCOM Co Ltd company
Dynamic Host Configuration Protocol server is put, Radio ＆ Television network of county level company is only responsible for the transmission of these data and safeguards the circuit of these data transmissions.
Because often geographical location is remote, far away for Radio ＆ Television network of county level company, from company of city to the data of company of county
Transmission line can interrupt frequently because of a variety of causes, and the Dynamic Host Configuration Protocol server of company of city cannot be provided to the user of CHINA RFTCOM Co Ltd company of county
DHCP service causes that dependent on the broadband user of company of city DHCP service the required necessary network attribute of online cannot be got,
It cannot complete to communicate with the local gateway of company of county computer room, it is even more impossible to be connected to internet by the local breakout of company of county,
It is affected, for this purpose, being badly in need of a kind of DHCP switching systems, when the DHCP data link of company of city to company of county is interrupted, starts
Local (backup) Dynamic Host Configuration Protocol server of company of county, the service identical with company of city DHCP is provided for this part broadband user, is user
Distribute and keep the network attribute parameter consistent with company of city DHCP, maintain the network communication of user, ensure user can not between
Internet is connected to disconnectedly.
The content of the invention
In view of this, the technical problems to be solved by the invention are to provide one kind and do not depend on main Dynamic Host Configuration Protocol server support and match somebody with somebody
The DHCP standby systems of conjunction.
The object of the present invention is achieved like this：
It is provided by the invention it is a kind of be not required to main Dynamic Host Configuration Protocol server support and coordinate DHCP backup handover methods, including with
Lower step：
S1：Receive the DHCP request of user；
S2：Judge whether main DHCP service is normal, if it is, user's DHCP request bag is transmitted to main DHCP service
Device；
S3：If it is not, then starting the process for being switched to backup DHCP service, while increase main DHCP service needs synchronization
Mark；
S4：User's DHCP request bag is transmitted to backup Dynamic Host Configuration Protocol server；
S5：Monitor the response process of main Dynamic Host Configuration Protocol server and backup Dynamic Host Configuration Protocol server；
S6：Judge whether main DHCP service state is normal, if it is, backup Dynamic Host Configuration Protocol server response data bag is abandoned,
The response bag of main Dynamic Host Configuration Protocol server is transmitted to user terminal；
S7：If it is not, then abandoning main Dynamic Host Configuration Protocol server response data bag, the response bag for backing up Dynamic Host Configuration Protocol server is transmitted to
User terminal；
It is described to judge whether main DHCP service normally includes two kinds of approach：
The DHCP data process of monitoring users judges whether DHCP data process is normal；
Analog subscriber sends DHCP request to main Dynamic Host Configuration Protocol server, judges whether DHCP data is normal.
Further, the main DHCP service is in normal further comprising the steps of：
S21：Judge whether main DHCP service has occurred and that interruption；If it is, start DHCP distribution synchronizing information processes；
S22：If main DHCP service is not interrupted, the DHCP request of user is forwarded to main Dynamic Host Configuration Protocol server.
Further, the repeating process is specific as follows：
Outer net (master) dhcp state monitored according to outer net (master) DHCP service monitoring modular, determines DHCP request
Routing direction；
If outer net (master) Dynamic Host Configuration Protocol server state is normal, DHCP request is turned to outer net (master) Dynamic Host Configuration Protocol server direction
Hair；
If outer net (master) Dynamic Host Configuration Protocol server abnormal state, DHCP request is turned to local (backup) Dynamic Host Configuration Protocol server
Hair；
While forwarding DHCP request and responding, DHCP is distributed to network attribute parameter and the user of each user
VLAN is recorded one by one, is stored in DHCP distribution information storage modules.
Further, the repeating process is specific as follows：
When outer net (master) Dynamic Host Configuration Protocol server occurs abnormal, the DHCP request of user is transmitted to local (backup) DHCP clothes
Business device；
If online user, then local (backup) Dynamic Host Configuration Protocol server will distribute information storage module from DHCP and read hair
The network attribute parameter of the user of request is played, then the state consistent with outer net (master) Dynamic Host Configuration Protocol server is kept to respond these parameters
To user；
If the user or the unwritten user in DHCP distribution information storage modules that newly reach the standard grade, then press
It is provided according to DHCP protocol, an idle IP and its associated network attribute parameter is distributed for user.
Further, the response process is specific as follows：
When the DHCP for receiving outer net (master) Dynamic Host Configuration Protocol server responds bag, if outer net (master) dhcp state is detected as just
Often, then DHCP is responded into bag and is transmitted to user；If outer net (master) dhcp state is detected as exception, DHCP is responded into bag and is lost
It abandons；
When the DHCP for receiving local (backup) Dynamic Host Configuration Protocol server, which is responded, to be wrapped, if outer net (master) dhcp state be detected as it is different
Often, then DHCP is responded into bag and is transmitted to user；If outer net (master) dhcp state is detected as normally, DHCP is responded into bag and is lost
It abandons.
Further, procedure below is further included：
S8：When outer net (master) Dynamic Host Configuration Protocol server recovers normal, temporarily the DHCP request of user is prevented to be forwarded to outer net
In (master) DHCP service, but the latest data for first distributing local (backup) Dynamic Host Configuration Protocol server, distribute synchronizing information by DHCP
VLAN, MAC of all users of module simulation and its corresponding network attribute parameter send to outer net (master) Dynamic Host Configuration Protocol server and ask
Newer information is realized the variance data of outer net (master) DHCP service Interruption period between The following article and fail data being updated completion, protects
The distribution information in DHCP distribution information storage modules is demonstrate,proved with keeping data consistent on current outer net (master) Dynamic Host Configuration Protocol server, and is disappeared
It is forwarded to after the synchronous mark of main DHCP service needs, then by the DHCP request of user in outer net (master) DHCP service, it is ensured that
The newly assigned data of outer net (master) Dynamic Host Configuration Protocol server do not conflict with existing distribution information.
The beneficial effects of the present invention are：DHCP backup handover methods provided by the invention, do not depend on main Dynamic Host Configuration Protocol server
It supports and coordinates；When DHCP data link is interrupted, start local (backup) Dynamic Host Configuration Protocol server, provided for this part broadband user
The service identical with outer net (master) DHCP distributes for user and keeps the network attribute parameter consistent with outer net (master) DHCP, ties up
The network communication of user is held, ensures that user can be connected to internet incessantly.
Description of the drawings
In order to make the object, technical solutions and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing into
The detailed description of one step, wherein：
Fig. 1 is the DHCP standby system figures provided in an embodiment of the present invention for not depending on main Dynamic Host Configuration Protocol server and supporting and coordinating；
Fig. 2 is DHCP request processing data packets flow chart provided in an embodiment of the present invention；
Fig. 3 is DHCP response datas bag process chart provided in an embodiment of the present invention；
Fig. 4 is DHCP synchronization process flow chart provided in an embodiment of the present invention.
Specific embodiment
Hereinafter reference will be made to the drawings, and the preferred embodiment of the present invention is described in detail.It should be appreciated that preferred embodiment
Only for illustrating the present invention, the protection domain being not intended to be limiting of the invention.
As shown in Figure 1, a kind of DHCP standby systems for not depending on main Dynamic Host Configuration Protocol server and supporting and coordinating provided by the invention,
It is same including DHCP forwarding modules, outer net (master) DHCP service monitoring modular, DHCP distribution information storage module, DHCP distribution information
Walk module, local (backup) Dynamic Host Configuration Protocol server；Main Dynamic Host Configuration Protocol server in the present embodiment is outer net Dynamic Host Configuration Protocol server, backup DHCP
Server is local Dynamic Host Configuration Protocol server.
The DHCP forwarding modules, for according to outer net (master) DHCP service monitoring modular as a result, determine DHCP request
Routing direction；
Outer net (master) the DHCP service monitoring modular, for by intercepting user terminal and outer net (master) Dynamic Host Configuration Protocol server
Between signal intelligence and communication process, judge whether the state of outer net (master) Dynamic Host Configuration Protocol server normal；
The DHCP distributes information storage module, is taken for storing outer net (master) Dynamic Host Configuration Protocol server and local (backup) DHCP
Business device is the network attribute parameter of user terminal distribution；
The DHCP distributes synchronizing information module, for when outer net (master) DHCP service recovers normal, temporarily preventing to use
The DHCP request at family is forwarded in outer net (master) DHCP service, but the newest number for first distributing local (backup) Dynamic Host Configuration Protocol server
According to MAC and its corresponding network attribute parameter by all users of DHCP distribution synchronizing information module simulations, to outer net (master)
Dynamic Host Configuration Protocol server, which is sent, asks newer information, realizes the variance data and failure number of outer net (master) DHCP service Interruption period between The following article
It completes, ensures in the distribution information and current outer net (master) Dynamic Host Configuration Protocol server in DHCP distribution information storage modules according to being updated
It keeps data consistent, and eliminates after main DHCP service needs synchronous mark, then the DHCP request of user is forwarded to outer net
In (master) DHCP service, it is ensured that the newly assigned data of outer net (master) Dynamic Host Configuration Protocol server do not conflict with existing distribution information；
Local (backup) Dynamic Host Configuration Protocol server during for working as outer net (master) Dynamic Host Configuration Protocol server exception, is distributed according to DHCP
Data in information storage module, provide to the user and maintain the network attribute consistent with outer net (master) Dynamic Host Configuration Protocol server distribute and
It re-rents.
Outer net (master) the DHCP service monitoring modular, for analog subscriber actively periodically to outer net (master) Dynamic Host Configuration Protocol server
DHCP service is asked, judges the state of Dynamic Host Configuration Protocol server, the result that will determine that informs DHCP forwarding modules.
As in Figure 2-4, a kind of DHCP backup sides for not depending on main Dynamic Host Configuration Protocol server and supporting and coordinating provided by the invention
Method comprises the following steps：
S1：Receive the DHCP request of user；
S2：Judge whether main DHCP service is normal, if it is, user's DHCP request bag is transmitted to outer net (master) DHCP
Server；
S3：If it is not, then start the function of being switched to local (backup) DHCP service；
S4：User's DHCP request bag is transmitted to local (backup) Dynamic Host Configuration Protocol server；
S5：Monitor the response process of local (backup) Dynamic Host Configuration Protocol server；
S6：Judge whether outer net (master) DHCP service state is abnormal, if it is not, then abandoning local (backup) DHCP responds number
According to bag；
S7：If it is, DHCP responses are transmitted to user terminal.
The repeating process is specific as follows：
Outer net (master) dhcp state monitored according to outer net (master) DHCP service monitoring modular, determines DHCP request
Routing direction；
If outer net (master) Dynamic Host Configuration Protocol server state is normal, by DHCP to outer net (master) Dynamic Host Configuration Protocol server direction forwarding；
If outer net (master) Dynamic Host Configuration Protocol server abnormal state, DHCP request is turned to local (backup) Dynamic Host Configuration Protocol server
Hair；
While forwarding DHCP request and responding, DHCP is distributed to network attribute parameter and the user of each user
VLAN is recorded one by one, is stored in DHCP distribution information storage modules；
The repeating process is specific as follows：
When outer net (master) Dynamic Host Configuration Protocol server occurs abnormal, the DHCP request of user is transmitted to local (backup) DHCP clothes
Business device；
If online user, then local (backup) Dynamic Host Configuration Protocol server will distribute information storage module from DHCP and read hair
The network attribute parameter of the user of request is played, then the state consistent with outer net (master) Dynamic Host Configuration Protocol server is kept to respond these parameters
To user；
If the user or the unwritten user in DHCP distribution information storage modules that newly reach the standard grade, then press
It is provided according to DHCP protocol, an idle IP and its associated network attribute parameter is distributed for user.
The response process is specific as follows：
When the DHCP for receiving outer net (master) Dynamic Host Configuration Protocol server responds bag, if outer net (master) dhcp state is detected as just
Often, then DHCP is responded into bag and is transmitted to user；If outer net (master) dhcp state is detected as exception, DHCP is responded into bag and is lost
It abandons；
When the DHCP for receiving local (backup) Dynamic Host Configuration Protocol server, which is responded, to be wrapped, if outer net (master) dhcp state be detected as it is different
Often, then DHCP is responded into bag and is transmitted to user；If outer net (master) dhcp state is detected as normally, DHCP is responded into bag and is lost
It abandons.
Further include procedure below：
S8：When outer net (master) Dynamic Host Configuration Protocol server recovers normal, DHCP is distributed to the local stored in information storage module
The latest data of (backup) Dynamic Host Configuration Protocol server distribution sends the information of request synchronized update to outer net (master) Dynamic Host Configuration Protocol server；Mould
Intend VLAN, MAC of all users and its corresponding network attribute parameter in storage table, these users are carried out to outer net (master) DHCP
Network attribute parameter synchronization.
The DHCP distribution synchronizing information further includes following processing procedure：
When main Dynamic Host Configuration Protocol server recovers normal, temporarily the DHCP request of user is prevented to be forwarded on main Dynamic Host Configuration Protocol server,
But first distribute the latest data of the DHCP distribution information storage module storages of backup Dynamic Host Configuration Protocol server distribution to information by DHCP
Synchronization module simulates the MAC of all users and its corresponding network attribute parameter, and it is newer to send request to main Dynamic Host Configuration Protocol server
Information is realized the variance data of main DHCP service Interruption period between The following article and fail data being updated completion, ensures DHCP distribution letters
The distribution information ceased in memory module keeps data consistent on current main Dynamic Host Configuration Protocol server, and it is same to eliminate main DHCP service needs
After the mark of step, then the DHCP request of user is forwarded in main DHCP service, it is ensured that the main newly assigned data of Dynamic Host Configuration Protocol server
Do not conflict with existing distribution information.
Synchronizing process provided in this embodiment utilizes existing DHCP protocol mechanism, analog subscriber VLAN and user MAC requests
The service of re-renting of DHCP leases reaches synchronous effect, different from the prior art using lease table to table or share a lease table come
Synchronous DHCP distributes information.VLAN in the present embodiment refers to the VLAN of 802.1q and QINQ.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although passing through ginseng
According to the preferred embodiment of the present invention, invention has been described, it should be appreciated by those of ordinary skill in the art that can
To make various changes to it in the form and details, without departing from the spirit and scope of the invention limited.
Claims (6)
1. it is not required to the DHCP backup handover methods supported and coordinated with main Dynamic Host Configuration Protocol server, it is characterised in that：Comprise the following steps：
S1：Receive the DHCP request of user；
S2：Judge whether main DHCP service is normal, if it is, user's DHCP request bag is transmitted to main Dynamic Host Configuration Protocol server；
S3：If it is not, then starting the process for being switched to backup DHCP service, while increase the synchronous mark of main DHCP service needs
Know；
S4：User's DHCP request bag is transmitted to backup Dynamic Host Configuration Protocol server；
S5：Monitor the response process of main Dynamic Host Configuration Protocol server and backup Dynamic Host Configuration Protocol server；
S6：Judge whether main DHCP service state is normal, if it is, backup Dynamic Host Configuration Protocol server response data bag is abandoned, by master
The response bag of Dynamic Host Configuration Protocol server is transmitted to user terminal；
S7：If it is not, then abandoning main Dynamic Host Configuration Protocol server response data bag, the response bag for backing up Dynamic Host Configuration Protocol server is transmitted to user
Terminal；
It is described to judge whether main DHCP service normally includes two kinds of approach：
The DHCP data process of monitoring users judges whether DHCP data process is normal；
Analog subscriber sends DHCP request to main Dynamic Host Configuration Protocol server, judges whether DHCP data is normal.
2. the DHCP backup handover methods according to claim 1 for being not required to support and coordinate with main Dynamic Host Configuration Protocol server, special
Sign is：The main DHCP service is in normal further comprising the steps of：
S21：Judge whether main DHCP service has occurred and that interruption；If it is, start DHCP distribution synchronizing information processes；
S22：If main DHCP service is not interrupted, the DHCP request of user is forwarded to main Dynamic Host Configuration Protocol server.
3. the DHCP backup handover methods according to claim 1 for being not required to support and coordinate with main Dynamic Host Configuration Protocol server, special
Sign is：The repeating process is specific as follows：
According to the main dhcp state that main DHCP service monitoring modular is monitored, the routing direction of DHCP request is determined；
If main Dynamic Host Configuration Protocol server state is normal, by DHCP request to main Dynamic Host Configuration Protocol server direction forwarding；
If main Dynamic Host Configuration Protocol server abnormal state, DHCP request is forwarded to backup Dynamic Host Configuration Protocol server；
While forwarding DHCP request and responding, DHCP is distributed into the network attribute parameter of each user and user vlan is made
It records, is stored in DHCP distribution information storage modules one by one.
4. the DHCP backup handover methods according to claim 1 for being not required to support and coordinate with main Dynamic Host Configuration Protocol server, special
Sign is：The repeating process is specific as follows：
When main Dynamic Host Configuration Protocol server occurs abnormal, the DHCP request of user is transmitted to backup Dynamic Host Configuration Protocol server；
If online user, then the use for initiating request will be read from DHCP distribution information storage modules by backing up Dynamic Host Configuration Protocol server
The network attribute parameter at family, then by these parameters holding state consistent with main Dynamic Host Configuration Protocol server response to user；
If the user that newly reaches the standard grade or distributing unwritten user in information storage module in DHCP, then according to
DHCP protocol provides, an idle IP and its associated network attribute parameter are distributed for user.
5. the DHCP backup handover methods according to claim 1 for being not required to support and coordinate with main Dynamic Host Configuration Protocol server, special
Sign is：The response process is specific as follows：
When the DHCP for receiving main Dynamic Host Configuration Protocol server responds bag, if main dhcp state is detected as that normally, main DHCP being responded
Bag is transmitted to user；If main dhcp state is detected as exception, DHCP is responded into bag and is abandoned；
When the DHCP for receiving backup Dynamic Host Configuration Protocol server responds bag, if main dhcp state is detected as exception, DHCP will be backed up
It responds bag and is transmitted to user；If main dhcp state is detected as normally, backup DHCP is responded bag abandons.
6. the DHCP backup handover methods according to claim 1 for being not required to support and coordinate with main Dynamic Host Configuration Protocol server, special
Sign is：Further include procedure below：
S8：When main Dynamic Host Configuration Protocol server recovers normal, temporarily the DHCP request of user is prevented to be forwarded in main DHCP service, but
The latest data that first backup Dynamic Host Configuration Protocol server is distributed is simulated VLAN, MAC of all users by DHCP distribution synchronizing information modules
And its corresponding network attribute parameter, it is sent to main Dynamic Host Configuration Protocol server and asks newer information, realized and interrupt main DHCP service
The variance data and fail data of period is updated completion, ensures the distribution information in DHCP distribution information storage modules with working as
It keeps data consistent on preceding main Dynamic Host Configuration Protocol server, and eliminates after main DHCP service needs synchronous mark, then the DHCP by user
Request is forwarded in main DHCP service, it is ensured that the main newly assigned data of Dynamic Host Configuration Protocol server do not conflict with existing distribution information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410720389.7A CN104639364B (en) | 2014-12-02 | 2014-12-02 | The DHCP backup methods that main Dynamic Host Configuration Protocol server is supported and coordinated are not depended on |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410720389.7A CN104639364B (en) | 2014-12-02 | 2014-12-02 | The DHCP backup methods that main Dynamic Host Configuration Protocol server is supported and coordinated are not depended on |
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| CN104639364A CN104639364A (en) | 2015-05-20 |
| CN104639364B true CN104639364B (en) | 2018-05-25 |
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| CN115567486A (en) * | 2022-09-20 | 2023-01-03 | 浪潮思科网络科技有限公司 | Lease synchronization method, device, equipment and medium in MLAG environment |
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| EP1073244A1 (en) * | 1999-07-29 | 2001-01-31 | International Business Machines Corporation | Method and system for monitoring dynamic host configuration protocol (DHCP) service in an internet protocol network |
| CN101729559A (en) * | 2009-12-03 | 2010-06-09 | 中兴通讯股份有限公司 | Method and system for realizing backup of DHCP server |
| CN102064951A (en) * | 2009-11-18 | 2011-05-18 | 中兴通讯股份有限公司 | Method for implementing master and standby DHCP servers |
| CN102404146A (en) * | 2011-11-17 | 2012-04-04 | 福建星网锐捷网络有限公司 | Master-slave switching method, network device and DHCP server |
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2014
- 2014-12-02 CN CN201410720389.7A patent/CN104639364B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1073244A1 (en) * | 1999-07-29 | 2001-01-31 | International Business Machines Corporation | Method and system for monitoring dynamic host configuration protocol (DHCP) service in an internet protocol network |
| CN102064951A (en) * | 2009-11-18 | 2011-05-18 | 中兴通讯股份有限公司 | Method for implementing master and standby DHCP servers |
| CN101729559A (en) * | 2009-12-03 | 2010-06-09 | 中兴通讯股份有限公司 | Method and system for realizing backup of DHCP server |
| CN102404146A (en) * | 2011-11-17 | 2012-04-04 | 福建星网锐捷网络有限公司 | Master-slave switching method, network device and DHCP server |
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Effective date of registration: 20191119 Address after: No.158-2-3-1, Yucheng street, Jiulongpo District, Chongqing Patentee after: Chongqing Guangyong Telecommunication Technology Co., Ltd. Address before: 400039 Chongqing Jiulongpo Shiqiaopu South Street No. 66 of No. 33-2-2 Patentee before: CHONGQING ZUNXIAN TECHNOLOGY CO., LTD. |
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