CN103124220A - Primary and standby synchronization protocol of video distribution network global server - Google Patents
Primary and standby synchronization protocol 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 communication network, relate in particular to the active and standby synchronous protocol of a kind of Video Distribution Network global server in Video Distribution Network.
Background technology
Along with the extensive use of video technique, the demand of serving based on the net cast of Internet increases day by day, and becomes based on the extensive video flow distribution of Internet the severe challenge that the net cast service faces.Although the CDN technology is widely used in distributing web traffic and video request program flow, realize the access nearby of Web content, the pressure that the high-throughput of alleviation streaming media brings backbone bandwidth, improve service response speed, but present CDN technology can't solve the traffic distribution problem of extensive net cast business well.In addition, extensive video communication service also need efficiently, the support of reliable Video Distribution Network technology.
As shown in Figure 1, for extensive net cast service, can improve the efficiency of service of extensive net cast business by disposing the Video Distribution Network that is formed by Video Distribution Network node server clusters such as live source tiny node server cluster, relay node services device cluster and fringe node server clusters, reduce the shared network bandwidth of net cast service transmission.
For extensive video communication services, as shown in Figure 2, can form Video Distribution Network by disposing take acting server as main node server cluster, thereby improve the throughput of video communication service, improve the service concurrence amount.
No matter be for the distributing network of net cast business shown in Figure 1 or the distributing network of video communication service shown in Figure 2, the high concentration management of the node server cluster that a large amount of dispersions are disposed and to control be the necessary means of guaranteeing network efficiency, reliability, controllability.The Video Distribution Network global server can be regarded as one group of logical device, realized the function such as management, monitoring, dynamic-configuration, control, scheduling of Video Distribution Network, all the Video Distribution Network node servers in Video Distribution Network have been carried out centralized control, management and scheduling.
After the Video Distribution Network node server started, it can obtain by the static configuration mode can provide for it sign and the address information of the Video Distribution Network global server of the service of control.In order to prevent Video Distribution Network global server Single Point of Faliure to cause Video Distribution Network to lose efficacy, generally, can dispose two Video Distribution Network global server in Video Distribution Network, one as primary control appliance, and one as standby control appliance.
When the Video Distribution Network global server as primary control appliance broke down, alternate video distributing network global server switched to host apparatus, became the primary control appliance of the Video Distribution Network node server in Video Distribution Network.
Active and standby switch speed when breaking down in order to accelerate primary Video Distribution Network global server, Video Distribution Network need to be supported primary, spare Video Distribution Network global server two-node cluster hot backup, primary Video Distribution Network global server is in running, and global administration and the state information of alternate video distributing network global server real-time synchronization Video Distribution Network.
Summary of the invention
Active and standby switch speed when breaking down in order to accelerate primary Video Distribution Network global server, reduce Video Distribution Network global server Single Point of Faliure to the impact of Video Distribution Network, the present invention is directed to Video Distribution Network system illustrated in figures 1 and 2, proposed the active and standby synchronous protocol of a kind of Video Distribution Network global server.
A kind of active and standby synchronous protocol of Video Distribution Network global server is provided according to a first aspect of the invention.It is characterized in that: the active and standby synchronous protocol of Video Distribution Network global server runs between primary Video Distribution Network global server and alternate video distributing network global server, be used for realizing the synchronous of Video Distribution Network global administration between primary Video Distribution Network global server and alternate video distributing network global server and state information, and the state between primary Video Distribution Network global server and alternate video distributing network global server switches.
According to a second aspect of the invention, the active and standby synchronous regime between primary Video Distribution Network global server and alternate video distributing network global server comprises: unit state, startup synchronous regime, information synchronous regime, the out-of-sequence state of information, wherein:
A) the unit state refers to Video Distribution Network global server before communication port between primary Video Distribution Network global server and alternate video distributing network global server the is not set up state that works alone;
B) start synchronous regime and refer to that between primary Video Distribution Network global server and alternate video distributing network global server, beginning is synchronous, but both sides' information does not also reach synchronous state;
C) the information synchronous regime refers to the state of the information normal synchronized between primary Video Distribution Network global server and alternate video distributing network global server;
D) the out-of-sequence state of information refers between primary Video Distribution Network global server and alternate video distributing network global server because the asynchronous state of information that the reasons such as communication failure cause.
According to a third aspect of the invention we, can switch between different active and standby synchronous regime between primary Video Distribution Network global server and alternate video distributing network global server, switch to as: unit state and start synchronous regime, start synchronous regime and switch to the information synchronous regime, start synchronous regime and switch to that the out-of-sequence state of information, information synchronous regime switch to the out-of-sequence state of information, the out-of-sequence state of information switches to the information synchronous regime.
According to a forth aspect of the invention, provide the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information, wherein, comprised following steps:
A) primary Video Distribution Network global server is advanced the Information encapsulation that is not synchronized to alternate video distributing network global server in Video Distribution Network global administration's information or state information table in one to many data synchronization messages;
B) data synchronization message that generates in a) of primary Video Distribution Network global server forwarding step is in alternate video distributing network global server;
C) alternate video distributing network global server is according to step b) Video Distribution Network global administration's information in the data synchronization message that receives or state information upgrade Video Distribution Network global administration's information or the state information table in alternate video distributing network global server.
According to a fifth aspect of the invention, the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information starts in both cases:
A) after primary Video Distribution Network global server or alternate video distributing network global server start, unrealized active and standby between information start when synchronous;
Start when b) in primary Video Distribution Network global server, changing appears in the synchronous information such as Video Distribution Network global administration's information or state information.
According to a sixth aspect of the invention, provide the unit state to the handoff procedure that starts synchronous regime.Wherein, comprise following steps:
A) primary Video Distribution Network global server receives the initiate notification message from alternate video distributing network global server;
B) primary Video Distribution Network global server sends active and standby synchronous initiation message to alternate video distributing network global server;
C) primary Video Distribution Network global server and alternate video distributing network global server all enter the startup synchronous regime, and log-on message is synchronous.
According to a seventh aspect of the invention, provide to start synchronous regime to the handoff procedure of information synchronous regime or the out-of-sequence state of information, wherein, comprised following steps:
A) enter the active and standby synchronous processing procedure that the primary Video Distribution Network global server that starts synchronous regime is carried out Video Distribution Network global administration's information and state information, all information in Video Distribution Network global administration's information and state information table are synchronized to alternate video distributing network global server;
B) if step a) runs succeeded, primary Video Distribution Network global server and alternate video distributing network global server all enter the information synchronous regime;
C) if step a) is carried out unsuccessfully, primary Video Distribution Network global server and alternate video distributing network global server all enter the out-of-sequence state of information.
According to an eighth aspect of the invention, provide the handoff procedure of information synchronous regime to the out-of-sequence state of information, wherein, comprised following steps:
A) after primary Video Distribution Network global server and alternate video distributing network global server realize that information is synchronous, when if Video Distribution Network global administration's information such as network state and state information change occur in network in running, primary Video Distribution Network global server is carried out the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information, with in Video Distribution Network global administration's information and state information table all not synchronizing information be synchronized to alternate video distributing network global server;
B) if step a) is carried out unsuccessfully, primary Video Distribution Network global server and alternate video distributing network global server all enter the out-of-sequence state of information.
According to a ninth aspect of the invention, provide the handoff procedure of the out-of-sequence state of information to the information synchronous regime, wherein, comprised following steps:
A) when primary Video Distribution Network global server and alternate video distributing network global server are in the out-of-sequence state of information, primary Video Distribution Network global server repeats the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information, until with in Video Distribution Network global administration's information and state information table all not synchronizing information be synchronized to alternate video distributing network global server;
B) if step a) runs succeeded, primary Video Distribution Network global server and alternate video distributing network global server all enter the information synchronous regime.
Adopt the solution of the present invention, can for providing active and standby real-time synchronization method between the primary Video Distribution Network global server in Video Distribution Network and alternate video distributing network global server, realize the two-node cluster hot backup between primary, spare Video Distribution Network global server.
Description of drawings
Read following detailed description to non-limiting example by the reference accompanying drawing, other features, objects and advantages of the present invention will become more obvious.Illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 shows the Video Distribution Network system configuration schematic diagram of net cast business;
Fig. 2 shows the Video Distribution Network system configuration schematic diagram of video communication service;
Fig. 3 shows the flow chart according to the active and standby synchronous processing procedure of Video Distribution Network global administration's information of a specific embodiment of the present invention and state information;
Fig. 4 shows the flow chart that arrives the handoff procedure that starts synchronous regime according to the unit state of a specific embodiment of the present invention.
Wherein, same or analogous Reference numeral represents same or analogous steps characteristic or device/module.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is described in detail.
As depicted in figs. 1 and 2, in Video Distribution Network, the Video Distribution Network global server is responsible for all the Video Distribution Network node servers in network are carried out centralized control, management, monitoring and scheduling.Global server 1 is configured to the primary control appliance in Video Distribution Network, and global server 2 is configured to the standby control appliance in Video Distribution Network.
Take the Video Distribution Network shown in Fig. 1 as example, the active and standby synchronous protocol of Video Distribution Network global server runs in global server 1 and global server 2, be responsible for carrying out the synchronous of Video Distribution Network global administration's information and state information between global server 1 and global server 2, and the state between primary Video Distribution Network global server and alternate video distributing network global server switches during primary Video Distribution Network global server equipment failure.
Below, a second aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and associated description thereof are incorporated herein by reference.
Take the global server 1 shown in Fig. 1 and global server 2 as example, the active and standby synchronous regime between global server 1 and global server 2 comprises: the unit state, start four kinds of synchronous regime, information synchronous regime and the out-of-sequence states of information etc.When global server 1 and global server 2 startup, all at first enter the unit state.The global server 2 that is configured to standby control appliance starts the rear initiate notification message that sends to global server 1, after global server 1 receives this message, the information that begins to start to global server 2 is synchronous, synchronization video distributing network global administration's information and state information.At this moment, global server 1 and global server 2 enter the startup synchronous regime.After Video Distribution Network global administration's information and state information Complete Synchronization in global server 1 and global server 2, global server 1 and global server 2 enter the information synchronous regime.When the Video Distribution Network global administration's information in global server 1 and global server 2 is asynchronous with the state information appearance, as: the network state information in global server 1 changes, and when not obtaining upgrading in time in global server 2, global server 1 and global server 2 enter the out-of-sequence state of information.
Below, a third aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and associated description thereof are incorporated herein by reference.
Take the global server 1 shown in Fig. 1 and global server 2 as example, can switch between the different active and standby synchronous regime between global server 1 and global server 2.After global server 1 and global server 2 starts and when beginning to start active and standby synchronizing process, global server 1 and global server 2 switch to the startup synchronous regime from the unit state.Be successfully completed Video Distribution Network global administration's information after global server 1 and global server 2 starts and state information synchronous, global server 1 and global server 2 switch to the information synchronous regime from starting synchronous regime, otherwise global server 1 and global server 2 switch to the out-of-sequence state of information from starting synchronous regime.After if global server 1 and global server 2 realize that information is synchronous, because a variety of causes when failing in time to be synchronized to the synchronizing information that network state etc. changes on global server 2, global server 1 and global server 2 switch to the out-of-sequence state of information from the information synchronous regime in running.Completed lastest imformation after global server 2 synchronous when global server 1, global server 1 and global server 2 switch to the information synchronous regime from the out-of-sequence state of information.
Below, according to Fig. 3, a fourth aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and associated description thereof are incorporated herein by reference.
Take the global server 1 shown in Fig. 1 and global server 2 as example, the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information comprises following steps:
Step S10: global server 1 is advanced the Information encapsulation that is not synchronized to global server 2 in Video Distribution Network global administration's information or state information table in one to many data synchronization messages.
Step S11: global server 1 all sends to global server 2 with the data synchronization message that generates in step S10.
Step S12: the data synchronization message that global server 2 bases receive is upgraded Video Distribution Network global administration's information or the state information table on it, Video Distribution Network global administration's information and state information in maintenance and global service 1 are synchronous, thereby when global server 1 breaks down, global server 2 and global server 1 can be carried out active and standby switching fast, do not affect the normal operation of Video Distribution Network.
Below, a fifth aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and associated description thereof are incorporated herein by reference.
The active and standby synchronous processing procedure of Video Distribution Network global administration information and state information starts in both cases:
(1) after primary Video Distribution Network global server or alternate video distributing network global server start, unrealized active and standby between information start when synchronous;
Start when (2) in primary Video Distribution Network global server, changing appears in the synchronous information such as Video Distribution Network global administration's information or state information.
Take the global server 1 shown in Fig. 1 and global server 2 as example, after global server 1 or global server 2 startups, with starting the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information, realize that Video Distribution Network global administration's information and the state information between global server 1 and global server 2 is synchronous.In the Video Distribution Network running, when the management information such as the distribution of services information in network, node server state or state information changed, relevant information all can be reported in global server 1 as primary control appliance.After global server 1 receives these information, can be according to the information updating that receives Video Distribution Network global administration's information or the state information table on it, and start simultaneously the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information, described lastest imformation is synchronized on global server 2, thus the Video Distribution Network global administration's information on maintenance global server 1 and global server 2 and the consistency of state information.
Below, according to Fig. 4, a sixth aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and associated description thereof are incorporated herein by reference.
Take the global server 1 shown in Fig. 1 and global server 2 as example, the unit state comprises following steps to the handoff procedure that starts synchronous regime:
Step S20: global server 1 receives the initiate notification message from global server 2.After startup, start the initiate notification message of monitoring from global server 2 as the global server 1 of the primary control appliance of Video Distribution Network.After global server 2 starts, will send initiate notification message to the video global server 1 as the primary control appliance of Video Distribution Network.
Step S21: global server 1 sends active and standby synchronous initiation message to global server 2, and notice global server 2 enters the startup synchronous regime.
Step S22: global server 1 and global server 2 all enter the startup synchronous regime, and start the synchronous of Video Distribution Network global administration's information and state information.
Below, a seventh aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and associated description thereof are incorporated herein by reference.
Take the global server 1 shown in Fig. 1 and global server 2 as example, start synchronous regime and comprise following steps to the handoff procedure of information synchronous regime or the out-of-sequence state of information:
Step S30: after global server 1 enters the startup synchronous regime, global server 1 is carried out the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information, and all information in Video Distribution Network global administration's information and state information table are synchronized to global server 2.
Step S31: if step S31 runs succeeded, Video Distribution Network global administration's information and all information in the state information table in global server 1 all successfully are synchronized on global server 2, and global server 1 and global server 2 all enter the information synchronous regime.
Step S32: unsuccessful if step S31 carries out, as: Partial synchronization information drop-out, the part in global server 1 treat that synchronizing information successfully is not synchronized on global server 2, and global server 1 and global server 2 all enter the out-of-sequence state of information.
Below, a eighth aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and associated description thereof are incorporated herein by reference.
Take the global server 1 shown in Fig. 1 and global server 2 as example, the information synchronous regime comprises following steps to the handoff procedure of the out-of-sequence state of information:
Step S40: after global server 1 and global server 2 realize that information is synchronous, when if Video Distribution Network global administration's information such as network state and state information change occur in network in running, global server 1 is carried out the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information, and all lastest imformations in Video Distribution Network global administration's information and state information table are synchronized in global server 2.
Step S41: if step S40 carries out unsuccessfully, as: Partial synchronization information dropout, accurate synchronization is not to global server 2 for Video Distribution Network global administration's information of global server 1 and the part lastest imformation in the state information table, and global server 1 and global server 2 enter the out-of-sequence state of information.
Below, a ninth aspect of the present invention is described, wherein, Fig. 1, Fig. 2 and associated description thereof are incorporated herein by reference.
Take the global server 1 shown in Fig. 1 and global server 2 as example, the out-of-sequence state of information comprises following steps to the handoff procedure of information synchronous regime:
Step S50: when global server 1 and global server 2 are in the out-of-sequence state of information, global server 1 repeats the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information, until with the Video Distribution Network global administration's information in global server 1 and in the state information table all not synchronizing information be synchronized in global server 2.
Step S51: if step S50 runs succeeded, global server 1 and global server 2 enter the information synchronous regime, and the Video Distribution Network global administration information in this moment global server 1 and global server 2 is consistent with all information in the state information table.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, as to do any modifications are equal to replacement, improve etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the active and standby synchronous protocol of a Video Distribution Network global server, it is characterized in that: the active and standby synchronous protocol of Video Distribution Network global server runs between primary Video Distribution Network global server and alternate video distributing network global server, be used for realizing the synchronous of Video Distribution Network global administration between primary Video Distribution Network global server and alternate video distributing network global server and state information, and the state between primary Video Distribution Network global server and alternate video distributing network global server switches.
2. the active and standby synchronous protocol of Video Distribution Network global server according to claim 1 is further characterized in that:
A) the active and standby synchronous regime between primary Video Distribution Network global server and alternate video distributing network global server comprises: unit state, startup synchronous regime, information synchronous regime, the out-of-sequence state of information;
B) the unit state refers to Video Distribution Network global server before communication port between primary Video Distribution Network global server and alternate video distributing network global server the is not set up state that works alone;
C) start synchronous regime and refer to that between primary Video Distribution Network global server and alternate video distributing network global server, beginning is synchronous, but both sides' information does not also reach synchronous state;
D) the information synchronous regime refers to the state of the information normal synchronized between primary Video Distribution Network global server and alternate video distributing network global server;
E) the out-of-sequence state of information refers between primary Video Distribution Network global server and alternate video distributing network global server because the asynchronous state of information that the reasons such as communication failure cause.
3. the active and standby synchronous protocol of according to claim 1-2 described Video Distribution Network global server, be further characterized in that: can switch between the different active and standby synchronous regime between primary Video Distribution Network global server and alternate video distributing network global server.
4. the active and standby synchronous protocol of according to claim 1-3 described Video Distribution Network global server, the feature of the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information also is:
A) primary Video Distribution Network global server is advanced the Information encapsulation that is not synchronized to alternate video distributing network global server in Video Distribution Network global administration's information or state information table in one to many data synchronization messages;
B) data synchronization message that generates in a) of primary Video Distribution Network global server forwarding step is in alternate video distributing network global server;
C) alternate video distributing network global server is according to step b) Video Distribution Network global administration's information in the data synchronization message that receives or state information upgrade Video Distribution Network global administration's information or the state information table in alternate video distributing network global server.
5. the active and standby synchronous protocol of according to claim 1-4 described Video Distribution Network global server, be further characterized in that, after primary Video Distribution Network global server or the startup of alternate video distributing network global server, unrealized active and standby between information when synchronous, the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information starts.
6. the active and standby synchronous protocol of according to claim 1-5 described Video Distribution Network global server, be further characterized in that, when changing appearred in the synchronous information of Video Distribution Network global administration's information or state information etc. in primary Video Distribution Network global server, the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information started.
7. the active and standby synchronous protocol of according to claim 1-6 described Video Distribution Network global server, be further characterized in that, the unit state comprises following steps to the handoff procedure that starts synchronous regime:
A) primary Video Distribution Network global server receives the initiate notification message from alternate video distributing network global server;
B) primary Video Distribution Network global server sends active and standby synchronous initiation message to alternate video distributing network global server;
C) primary Video Distribution Network global server and alternate video distributing network global server all enter the startup synchronous regime, prepare the information of carrying out synchronous.
8. the active and standby synchronous protocol of according to claim 1-7 described Video Distribution Network global server, be further characterized in that, the startup synchronous regime comprises following steps to the handoff procedure of information synchronous regime or the out-of-sequence state of information:
A) enter the active and standby synchronous processing procedure that the primary Video Distribution Network global server that starts synchronous regime is carried out Video Distribution Network global administration's information and state information, all information in Video Distribution Network global administration's information and state information table are synchronized to alternate video distributing network global server;
B) if step a) runs succeeded, primary Video Distribution Network global server and alternate video distributing network global server all enter the information synchronous regime;
C) if step a) is carried out unsuccessfully, primary Video Distribution Network global server and alternate video distributing network global server all enter the out-of-sequence state of information.
9. the active and standby synchronous protocol of according to claim 1-8 described Video Distribution Network global server, be further characterized in that, the information synchronous regime comprises following steps to the handoff procedure of the out-of-sequence state of information:
A) after primary Video Distribution Network global server and alternate video distributing network global server realize that information is synchronous, when if Video Distribution Network global administration's information such as network state and state information change occur in network in running, primary Video Distribution Network global server is carried out the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information, with in Video Distribution Network global administration's information and state information table all not synchronizing information be synchronized to alternate video distributing network global server;
B) if step a) is carried out unsuccessfully, primary Video Distribution Network global server and alternate video distributing network global server all enter the out-of-sequence state of information.
10. the active and standby synchronous protocol of according to claim 1-9 described Video Distribution Network global server, be further characterized in that, the out-of-sequence state of information comprises following steps to the handoff procedure of information synchronous regime:
A) when primary Video Distribution Network global server and alternate video distributing network global server are in the out-of-sequence state of information, primary Video Distribution Network global server repeats the active and standby synchronous processing procedure of Video Distribution Network global administration's information and state information, until with in Video Distribution Network global administration's information and state information table all not synchronizing information be synchronized to alternate video distributing network global server;
B) if step a) runs succeeded, primary Video Distribution Network global server and alternate video distributing network global server all enter the information synchronous regime.
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