CN103124220B - Primary and standby synchronization method of video distribution network global server - Google Patents
Primary and standby synchronization method of video distribution network global server Download PDFInfo
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Abstract
The invention relates to the technical field of information and communications, in particular to a primary and standby synchronization protocol of a video distribution network global server. The primary and standby synchronization protocol of the video distribution network global server runs between a primary video distribution network global server and a standby video distribution network global server, and is used for achieving video distribution network global management and status information synchronization between the primary video distribution network global server and the standby video distribution network global server, and status switching between the primary video distribution network global server and the standby video distribution network global server.
Description
Technical field
The present invention relates to a kind of video distribution network global server in communication network, more particularly to Video Distribution Network
Active and standby synchronous protocol.
Background technology
With the extensive application of video technique, the demand that the net cast based on Internet is serviced increasingly increases, and base
Become net cast in the extensive video flow distribution of Internet and service a faced severe challenge.Although CDN skills
Art is widely used in distributing web traffic and video request program flow, realizes the access nearby of Web content, alleviates streaming media
High-throughput pressure that backbone bandwidth is brought, improve service response speed, but at present CDN technologies can't be solved well
The traffic distribution problem of certainly extensive video live broadcast service.Additionally, extensive video communication service be also required to it is efficient, reliably regard
The support of frequency distribution network technology.
As shown in figure 1, for extensive net cast service, can be by deployment by live source tiny node server set
What the video distribution network node server clusters such as group, relay node services device cluster and edge node server cluster were constituted
Video Distribution Network reduces the net shared by net cast service transmission improving the efficiency of service of extensive video live broadcast service
Network bandwidth.
For extensive video communication services, as shown in Fig. 2 node clothes of the deployment based on proxy server can be passed through
It is engaged in device cluster to constitute Video Distribution Network, so as to improve the handling capacity of video communication service, improves service concurrence amount.
Either for the video live broadcast service shown in Fig. 1 distribution network or Fig. 2 shown in video communication service
Distribution network, the high concentration management and control of the node server clusters of a large amount of dispersion deployment are to ensure that network efficiency, can
By property, the necessary means of controllability.Video distribution network global server can be regarded as one group of logical device, realize video
The functions such as management, monitoring, dynamic configuration, control, the scheduling of distribution network, to Video Distribution Network in all video distribution nets
Network node server carries out centralized Control, management and dispatches.
After video distribution network node server starts, it can be obtained by static configuration mode and can be provided for it
The mark and address information of the video distribution network global server of control service.In order to prevent Video Distribution Network global service
Device Single Point of Faliure causes Video Distribution Network to fail, and generally, two video distribution nets can be disposed in Video Distribution Network
Network global server, one as primary control equipment, one used as backup control equipment.
When breaking down as the video distribution network global server for primary control equipment, backup video distribution network
Global server switches to host apparatus, becomes the primary control of the video distribution network node server in Video Distribution Network
Equipment.
In order to accelerate active-standby switch speed when primary video distribution network global server breaks down, video distribution net
Network needs to support primary, spare video distribution network global server two-node cluster hot backup, primary video distribution network global server
In running, and global administration and the shape of backup video distribution network global server real-time synchronization Video Distribution Network
State information.
The content of the invention
In order to accelerate active-standby switch speed when primary video distribution network global server breaks down, reduce video point
Impact of the hairnet network global server Single Point of Faliure to Video Distribution Network, the present invention is for the video distribution shown in Fig. 1 and Fig. 2
A kind of network system, it is proposed that the active and standby synchronous protocol of video distribution network global server.
According to the first aspect of the invention, there is provided a kind of active and standby synchronous protocol of video distribution network global server.
It is characterized in that：The active and standby synchronous protocol of video distribution network global server runs on primary Video Distribution Network global service
Between device and backup video distribution network global server, for realizing primary video distribution network global server and standby regarding
The synchronization of Video Distribution Network global administration and status information between frequency distribution network global server, and primary video point
State switching between hairnet network global server and backup video distribution network global server.
According to the second aspect of the invention, primary video distribution network global server and backup video distribution network are global
Active and standby synchronous regime between server includes：Unit state, startup synchronous regime, synchronizing information state, the out-of-sequence state of information,
Wherein：
A) unit state refers to primary video distribution network global server and backup video distribution network global server
Between communication port do not set up before video distribution network global server autonomous working state；
B) start synchronous regime and refer to primary video distribution network global server and the global clothes of backup video distribution network
Start synchronously between business device, but the also not up to synchronous state of two-sided information；
C) synchronizing information state refers to primary video distribution network global server and the global clothes of backup video distribution network
The state of the information normal synchronized between business device；
D) the out-of-sequence state of information refers to primary video distribution network global server and the global clothes of backup video distribution network
The information asynchronous state caused because of reasons such as communication failures between business device.
According to the third aspect of the invention we, primary video distribution network global server and backup video distribution network are global
Can switch between different active and standby synchronous regime between server, such as：Unit state switches to startup synchronous regime, starts together
Step state switches to synchronizing information state, startup synchronous regime to switch to the out-of-sequence state of information, synchronizing information state to switch to letter
Cease the out-of-sequence state of out-of-sequence state, information and switch to synchronizing information state.
According to the fourth aspect of the invention, there is provided Video Distribution Network global administration information and status information it is active and standby same
Step processing procedure, wherein, comprise the steps of：
A) primary video distribution network global server is by Video Distribution Network global administration information or status information table
It is not synchronized to the Information encapsulation of backup video distribution network global server and enters one in a plurality of data synchronization message；
B) data synchronization message generated in primary video distribution network global server forwarding step a) is to alternate video
In distribution network global server；
C) video point in the data synchronization message that backup video distribution network global server is received according to step b)
Hairnet network global administration's information or status information to update backup video distribution network global server in Video Distribution Network
Global administration's information or status information table.
According to the fifth aspect of the invention, the active and standby synchronization process of Video Distribution Network global administration information and status information
Process starts in both cases：
A) it is unreal after primary video distribution network global server or backup video distribution network global server start
Start during synchronizing information between now active and standby；
B) Video Distribution Network global administration information or status information are equal in primary video distribution network global server
Starting during change occurs in step information.
According to the sixth aspect of the invention, there is provided unit state is to the handoff procedure for starting synchronous regime.Wherein, comprising
Following steps：
A) primary video distribution network global server receives opening from backup video distribution network global server
Dynamic notification message；
B) the active and standby synchronous averaging message of primary video distribution network global server transmission is complete to backup video distribution network
Office's server；
C) primary video distribution network global server and backup video distribution network global server are entered and started together
Step state, starts synchronizing information.
According to the seventh aspect of the invention, there is provided start synchronous regime to synchronizing information state or the out-of-sequence state of information
Handoff procedure, wherein, comprise the steps of：
A) the global pipe of primary video distribution network global server execution Video Distribution Network for starting synchronous regime is entered
The active and standby synchronization process process of reason information and status information, by Video Distribution Network global administration information and status information table
All synchronizing informations are to backup video distribution network global server；
If b) step a) runs succeeded, primary video distribution network global server and backup video distribution network are global
Server enters synchronizing information state；
If c) step a) performs failure, primary video distribution network global server and backup video distribution network are global
Server enters the out-of-sequence state of information.
According to the eighth aspect of the invention, there is provided the handoff procedure of synchronizing information state to the out-of-sequence state of information, wherein,
Comprise the steps of：
A) when primary video distribution network global server and backup video distribution network global server realize that information is same
After step, if there is the Video Distribution Network such as network state global administration's information and state information change in running in network
When, primary video distribution network global server performs the active and standby synchronization of Video Distribution Network global administration's information and status information
Processing procedure, by all non-synchronizing information in Video Distribution Network global administration information and status information table standby regarding is synchronized to
Frequency distribution network global server；
If b) step a) performs failure, primary video distribution network global server and backup video distribution network are global
Server enters the out-of-sequence state of information.
According to the ninth aspect of the invention, there is provided the handoff procedure of the out-of-sequence state of information to synchronizing information state, wherein,
Comprise the steps of：
A) when primary video distribution network global server and backup video distribution network global server are lost in information
During sequence state, primary video distribution network global server repeats Video Distribution Network global administration information and status information
Active and standby synchronization process process, until by all synchronous letter in Video Distribution Network global administration information and status information table
Breath is synchronized to backup video distribution network global server；
If b) step a) runs succeeded, primary video distribution network global server and backup video distribution network are global
Server enters synchronizing information state.
Can be primary video distribution network global server in Video Distribution Network and standby using the solution of the present invention
With active and standby real-time synchronization method is provided between video distribution network global server, realize that primary, spare Video Distribution Network is global
Two-node cluster hot backup between server.
Description of the drawings
The following detailed description to non-limiting example is read by referring to accompanying drawing, other of the present invention are special
Levy, objects and advantages will become more apparent upon.The schematic description and description of the present invention is used to explain the present invention, not structure
Into inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the Video Distribution Network system structure diagram of video live broadcast service；
Fig. 2 shows the Video Distribution Network system structure diagram of video communication service；
Fig. 3 shows the Video Distribution Network global administration information of a specific embodiment of the invention and state letter
The flow chart of the active and standby synchronization process process of breath；
Fig. 4 shows the unit state of a specific embodiment of the invention to the handoff procedure for starting synchronous regime
Flow chart.
Wherein, same or analogous reference represents same or analogous steps characteristic or device/module.
Specific embodiment
Below in conjunction with the accompanying drawings, the preferred embodiment of the present invention is described in detail.
As depicted in figs. 1 and 2, in Video Distribution Network, video distribution network global server is responsible in network
All video distribution network node servers carry out centralized Control, management, monitoring and dispatch.Global server 1 is configured to regard
Primary control equipment in frequency distribution network, global server 2 is configured to the backup control equipment in Video Distribution Network.
By taking the Video Distribution Network shown in Fig. 1 as an example, the active and standby synchronous protocol fortune of video distribution network global server
Row is responsible for carrying out video distribution between global server 1 and global server 2 in global server 1 and global server 2
The synchronization of network global administration information and status information, and during primary video distribution network global server equipment failure it is primary
State switching between video distribution network global server and backup video distribution network global server.
Hereinafter, a second aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and its associated description are hereby incorporated by
With reference to.
By taking global server 1 and global server 2 shown in Fig. 1 as an example, global server 1 and global server 2 it
Between active and standby synchronous regime include：Four kinds of unit state, startup synchronous regime, synchronizing information state and out-of-sequence state of information etc..
When global server 1 and global server 2 start, unit state is all initially entered.It is configured to the complete of backup control equipment
Office's server 2 sends after starting and starts notification message to global server 1, and global server 1 receives after the message, starts to open
Move the synchronizing information of global server 2, synchronization video distribution network global administration's information and status information.Now, global clothes
Business device 1 and global server 2 are entered and start synchronous regime.Video Distribution Network in global server 1 and global server 2
After global administration's information and status information Complete Synchronization, global server 1 and global server 2 enter synchronizing information state.When
When Video Distribution Network global administration information and status information in global server 1 and global server 2 occurs asynchronous,
Such as：Network state information in global server 1 changes, and when not obtaining upgrading in time in global server 2, overall situation clothes
Business device 1 and global server 2 enter the out-of-sequence state of information.
Hereinafter, a third aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and its associated description are hereby incorporated by
With reference to.
By taking global server 1 and global server 2 shown in Fig. 1 as an example, global server 1 and global server 2 it
Between different active and standby synchronous regime between can switch.After global server 1 and global server 2 start and start to start master
During standby synchronizing process, global server 1 and global server 2 switch to startup synchronous regime from unit state.Work as global service
Device 1 and global server 2 successfully complete Video Distribution Network global administration information and status information synchronization after starting, then global clothes
Business device 1 and global server 2 switch to synchronizing information state, otherwise global server 1 and global service from synchronous regime is started
Device 2 switches to the out-of-sequence state of information from synchronous regime is started.If global server 1 and global server 2 realize synchronizing information
Afterwards, because the synchronizing information that a variety of causes fails network state etc. to change is synchronized in time global clothes in running
When on business device 2, global server 1 and global server 2 switch to the out-of-sequence state of information from synchronizing information state.Work as global service
Device 1 is completed after the synchronization for updating information to global server 2, then global server 1 and global server 2 are out-of-sequence from information
State switches to synchronizing information state.
Hereinafter, a fourth aspect of the present invention is described according to Fig. 3, wherein, Fig. 1, Fig. 2 and its associated description here one
And as reference.
By taking global server 1 and global server 2 shown in Fig. 1 as an example, Video Distribution Network global administration information and
The active and standby synchronization process process of status information is comprised the steps of：
Step S10：Global server 1 will not be synchronized to entirely in Video Distribution Network global administration information or status information table
The Information encapsulation of office's server 2 enters one in a plurality of data synchronization message.
Step S11：The data synchronization message generated in step S10 is all sent to global server by global server 1
2。
Step S12：The Video Distribution Network that global server 2 updates thereon according to the data synchronization message for receiving is complete
Office's management information or status information table, keep and the Video Distribution Network global administration information and status information in global service 1
It is synchronous, so as to when global server 1 breaks down, global server 2 and global server 1 can quickly carry out active and standby cutting
Change, do not affect the normal operation of Video Distribution Network.
Hereinafter, a fifth aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and its associated description are hereby incorporated by
With reference to.
The active and standby synchronization process process of Video Distribution Network global administration information and status information starts in both cases：
(1) after primary video distribution network global server or backup video distribution network global server start, not
Realize it is active and standby between synchronizing information when start；
(2) Video Distribution Network global administration information or status information are equal in primary video distribution network global server
Starting during change occurs in step information.
By taking global server 1 and global server 2 shown in Fig. 1 as an example, when global server 1 or global server
After 2 start, the active and standby synchronization process process of Video Distribution Network global administration's information and status information will be started, realize global clothes
Video Distribution Network global administration information and status information synchronization between business device 1 and global server 2.In Video Distribution Network
In running, when the management informations such as the distribution of services information in network, node server state or status information change
When, relevant information all can be reported in the global server 1 as primary control equipment.Global server 1 receives these letters
After breath, can according to the information updating that receives Video Distribution Network global administration information thereon or status information table, and while
Start the active and standby synchronization process process of Video Distribution Network global administration's information and status information, the fresh information is synchronized to
In global server 2, so as to keep Video Distribution Network global administration information in global server 1 and global server 2 and
The concordance of status information.
Hereinafter, a sixth aspect of the present invention is described according to Fig. 4, wherein, Fig. 1, Fig. 2 and its associated description here one
And as reference.
By taking global server 1 and global server 2 shown in Fig. 1 as an example, unit state is cut to startup synchronous regime
The process of changing is comprised the steps of：
Step S20：Global server 1 receives the startup notification message from global server 2.As video distribution net
The global server 1 of the primary control equipment of network upon actuation, starts the startup notification message monitored from global server 2.
It is after global server 2 starts, the video for sending startup notification message to the primary control equipment as Video Distribution Network is complete
Office's server 1.
Step S21：Global server 1 sends active and standby synchronous averaging message to global server 2, notifies global server 2
Into startup synchronous regime.
Step S22：Global server 1 and global server 2 are entered and start synchronous regime, and start Video Distribution Network
The synchronization of global administration's information and status information.
Hereinafter, a seventh aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and its associated description are hereby incorporated by
With reference to.
By taking global server 1 and global server 2 shown in Fig. 1 as an example, start synchronous regime to synchronizing information state
Or the handoff procedure of the out-of-sequence state of information is comprised the steps of：
Step S30：After global server 1 is entered starts synchronous regime, it is complete that global server 1 performs Video Distribution Network
The active and standby synchronization process process of office's management information and status information, by Video Distribution Network global administration information and status information table
In all synchronizing informations to global server 2.
Step S31：Video Distribution Network global administration information and shape if step S31 runs succeeded, in global server 1
The equal successful synchronization of all information in state information table in global server 2, then enter by global server 1 and global server 2
Enter synchronizing information state.
Step S32：If the execution of step S31 is unsuccessful, such as：Treat Partial synchronization information drop-out, the part in global server 1
Synchronizing information is unsuccessful to be synchronized in global server 2, then global server 1 and global server 2 enter the out-of-sequence shape of information
State.
Hereinafter, a eighth aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and its associated description are hereby incorporated by
With reference to.
By taking global server 1 and global server 2 shown in Fig. 1 as an example, synchronizing information state is to the out-of-sequence state of information
Handoff procedure comprise the steps of：
Step S40：After global server 1 and global server 2 realize synchronizing information, if network is in running
When the Video Distribution Network such as generation network state global administration's information and state information change, global server 1 performs video point
The active and standby synchronization process process of hairnet network global administration's information and status information, by Video Distribution Network global administration information and shape
All fresh informations in state information table are synchronized in global server 2.
Step S41：If step S40 performs failure, such as：Partial synchronization information is lost, the video distribution net of global server 1
The non-accurate synchronization of part fresh information in network global administration information and status information table to global server 2, then global service
Device 1 and global server 2 enter the out-of-sequence state of information.
Hereinafter, a ninth aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and its associated description are hereby incorporated by
With reference to.
By taking global server 1 and global server 2 shown in Fig. 1 as an example, the out-of-sequence state of information is to synchronizing information state
Handoff procedure comprise the steps of：
Step S50：When global server 1 and global server 2 state out-of-sequence in information, global server 1 repeats
The active and standby synchronization process process of Video Distribution Network global administration's information and status information is performed, until by global server 1
Video Distribution Network global administration information and status information table in all non-synchronizing information be synchronized in global server 2.
Step S51：If step S50 runs succeeded, global server 1 and global server 2 enter synchronizing information state,
It is now all in the Video Distribution Network global administration information and status information table in global server 1 and global server 2
Information is consistent.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improve etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of main standby synchronous method of video distribution network global server, it is characterised in that：The global clothes of Video Distribution Network
The active and standby synchronous protocol of business device runs on primary video distribution network global server and backup video distribution network global service
Between device, for realizing regarding between primary video distribution network global server and backup video distribution network global server
Frequency distribution network global administration and the synchronization of status information, and primary video distribution network global server and alternate video point
Different active and standby synchronous regime switching between hairnet network global server；Primary video distribution network global server and standby regard
The switching of the different active and standby synchronous regime between frequency distribution network global server includes：Unit state switches to the synchronous shape of startup
State, startup synchronous regime switch to synchronizing information state, synchronizing information state to switch to the out-of-sequence state of information and the out-of-sequence shape of information
State switches to synchronizing information state；Unit state refers to primary video distribution network global server and backup video distribution network
Communication port between global server do not set up before video distribution network global server autonomous working state；Start synchronous
State refers to that beginning is synchronous between primary video distribution network global server and backup video distribution network global server, but
The also not up to synchronous state of two-sided information；Synchronizing information state refers to primary video distribution network global server and standby regards
The state of the information normal synchronized between frequency distribution network global server；The out-of-sequence state of information refers to primary Video Distribution Network
The information that the reason between global server and backup video distribution network global server because of communication failure causes is asynchronous
State；The active and standby synchronization process process of Video Distribution Network global administration information and status information：
A) primary video distribution network global server will be not same in Video Distribution Network global administration information or status information table
The status information for walking backup video distribution network global server is encapsulated into one in a plurality of data synchronization message；
B) data synchronization message generated in primary video distribution network global server forwarding step a) is distributed to alternate video
In network global server；
C) the video distribution net in the data synchronization message that backup video distribution network global server is received according to step b)
Network global administration information or status information to update backup video distribution network global server in Video Distribution Network it is global
Management information or status information table.
2. the main standby synchronous method of video distribution network global server according to claim 1, is further characterized in that, when
After primary video distribution network global server or backup video distribution network global server start, be not implemented it is active and standby between
During synchronizing information, the active and standby synchronization process process of Video Distribution Network global administration information and status information starts.
3. the main standby synchronous method of video distribution network global server according to claim 1, is further characterized in that, when
When there is change in Video Distribution Network global administration information or status information in primary video distribution network global server, video
The active and standby synchronization process process of distribution network global administration information and status information starts.
4. the main standby synchronous method of video distribution network global server according to claim 1, is further characterized in that, single
Machine state to the handoff procedure for starting synchronous regime is comprised the steps of：
A) primary video distribution network global server receives logical from the startup of backup video distribution network global server
Know message；
B) primary video distribution network global server sends active and standby synchronous averaging message and takes to backup video distribution network is global
Business device；
C) primary video distribution network global server and backup video distribution network global server are entered and start synchronous shape
State, is ready for synchronizing information.
5. the main standby synchronous method of video distribution network global server according to claim 1, is further characterized in that, opens
Dynamic synchronous regime to the handoff procedure of synchronizing information state or the out-of-sequence state of information is comprised the steps of：
A) the primary video distribution network global server execution Video Distribution Network global administration letter for starting synchronous regime is entered
The active and standby synchronization process process of breath and status information, will be all in Video Distribution Network global administration information and status information table
Synchronizing information is to backup video distribution network global server；
If b) step a) runs succeeded, primary video distribution network global server and backup video distribution network global service
Device enters synchronizing information state；
If c) step a) performs failure, primary video distribution network global server and backup video distribution network global service
Device enters the out-of-sequence state of information.
6. the main standby synchronous method of video distribution network global server according to claim 1, is further characterized in that, letter
Breath synchronous regime is comprised the steps of to the handoff procedure of the out-of-sequence state of information：
A) after primary video distribution network global server and backup video distribution network global server realize synchronizing information,
It is main if network occurs the Video Distribution Network global administration information and state information change of network state in running
The active and standby synchronization process of Video Distribution Network global administration's information and status information is performed with video distribution network global server
Process, by all non-synchronizing information in Video Distribution Network global administration information and status information table alternate video point is synchronized to
Hairnet network global server；
If b) step a) performs failure, primary video distribution network global server and backup video distribution network global service
Device enters the out-of-sequence state of information.
7. the main standby synchronous method of video distribution network global server according to claim 1, is further characterized in that, letter
Cease out-of-sequence state to comprise the steps of to the handoff procedure of synchronizing information state：
A) when primary video distribution network global server and backup video distribution network global server are in the out-of-sequence shape of information
During state, primary video distribution network global server repeats the master of Video Distribution Network global administration information and status information
Standby synchronization process process, until all non-synchronizing information in Video Distribution Network global administration information and status information table is same
Walk backup video distribution network global server；
If b) step a) runs succeeded, primary video distribution network global server and backup video distribution network global service
Device enters synchronizing information state.
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| JP3846806B2 (en) * | 2005-02-10 | 2006-11-15 | Ｔｄｋ株式会社 | Discharge lamp driving device and liquid crystal display device |
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