CN101977148A - Data exchange method and system of node media servers of content delivery network - Google Patents
Data exchange method and system of node media servers of content delivery network Download PDFInfo
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- CN101977148A CN101977148A CN2010105232420A CN201010523242A CN101977148A CN 101977148 A CN101977148 A CN 101977148A CN 2010105232420 A CN2010105232420 A CN 2010105232420A CN 201010523242 A CN201010523242 A CN 201010523242A CN 101977148 A CN101977148 A CN 101977148A
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Abstract
The invention discloses a data exchange method and system of the node media servers of a content delivery network (CDN). The method comprises the following steps: after starting, the media servers send the corresponding IP addresses and MAC addresses to an exchange controller and also inform the exchange controller when the IP addresses and/or MAC addresses are changed; the exchange controller establishes and updates the media forwarding table of the CDN node according to the received IP addresses and MAC addresses of the media servers, and also updates the media forwarding table in the media servers; when data exchange is performed between the media servers in the node, the MAC address of the target media server is obtained through the local media forwarding table and the IP Encapsulation of the data message is performed. By using the method and system of the invention, the problem that when data exchange is performed between the node media servers in the traditional CDN, data packet flooding may be caused, can be solved.
Description
Technical field
The present invention relates to the mutual field of media data, relate in particular to media data exchange method and system between CDN (Content Distribution Network, content distributing network) the intranodal media server.
Background technology
Along with the fast development of the Internet and multimedia industry, various memory technologies and storage system have also obtained develop rapidly.These storage systems are that the internet information and the multimedia data information of magnanimity provided convenience, stored fast and efficiently and access services.
Media server is as the part of storage system, be widely used in IPTV (Internet ProtocolTelevision, IPTV) in the server of CDN business such as system on-demand, is used for the storage of the interior data of individual node (each node provides service for a zone or a part of user) and reads.Along with the raising of user's request, need data quantity stored also increasing in the CDN service application, individual node will provide complete service to need the memory space of magnanimity.Simultaneously in the increasing situation of user, need more media server that service is provided, each media server provides storage and media data to send service simultaneously, this will bring great difficulty to the management of the media server media data Internet, even cause whole node media services quality to reduce.
Summary of the invention
The method and system that the purpose of this invention is to provide data interaction between a kind of content delivery network node media server, when solving between the CDN node media server that exists in traditional technology data interaction, when utilizing the ARP protocol stack to carry out the message encapsulation, utilize the broadcast addressing mode, may cause the recovery of MAC Address and heavy learning process and the packet that causes problem such as flood.
In order to address the above problem, the invention provides the method for data interaction between a kind of content distributing network (CDN) node media server, this CDN node comprises two or more media servers and at least one exchange control unit, this method comprises:
After described media server starts separately the IP address and the MAC Address of place matchmaker book server send to described exchange control unit, and in described IP address and/or MAC Address notify described exchange control unit when changing;
Described exchange control unit is created according to the IP address of each media server of receiving and MAC Address and the medium that upgrade this CDN node are transmitted, and these medium are transmitted is synchronized to described media server;
When sending message between the described media server, the source media server is transmitted the MAC Address of obtaining the purpose media server according to these medium, message is carried out the IP encapsulation after, send to the purpose media server through described exchange control unit.
Preferably, described exchange control unit is transmitted these medium and is synchronized to described media server and finishes by following one or more modes:
In the described exchange control unit at least one sends to described media server with the update content that these medium are transmitted or these medium are transmitted after the medium that upgrade this locality are transmitted, upgrade local medium after described media server is received and transmit;
Described media server regularly ask in the described exchange control unit at least one synchronously these medium transmit, the exchange control unit of receiving request is transmitted these medium and is sent to described media server, described media server upgrades local medium and transmits;
In the described exchange control unit at least one regularly these medium of multicast transmitted described media server, upgrades local medium after described media server is received and transmits.
Preferably, the described exchange control unit of this CDN node has two or more, and described media server medium face has two or more network interfaces, is connected respectively to different exchange control units;
Also inciting somebody to action separately after described media server starts, the state information of medium face all-network interface sends to described exchange control unit, and the described exchange control unit of real-time informing when the state variation of network interface, whether the link between this network interface of the state representation of certain network interface and the exchange control unit is available;
The state information that also comprises each media server medium face all-network interface during described exchange control unit establishment and these medium of safeguarding are transmitted.
Preferably, described source media server sends before the message, also comprise the step of carrying out Path selection: the state of source media server and purpose media server medium face all-network interface during the source media server is transmitted according to these medium earlier, the source media server is selected to the mulitpath through different exchange control units between the purpose media server, and mode is as follows:
If there is not available path, then wouldn't send message;
If an available path is arranged, then use this path;
If two or more available path is arranged, then select wherein one.
Preferably, in the described step of carrying out Path selection, the each path of selecting of record also, but in this selection there is two or more path time spent, the policy selection of evenly using by each paths is different from a paths in path last time.
Preferably, described CDN node also comprises the managing medium resource device, is used for the network interface resource of described media server is managed;
Before obtaining service as the media server of service request terminal from described media server, earlier to described managing medium resource device log on interface resource, described managing medium resource device distributes for this service request terminal according to the load balancing principle can provide the media server and the network interface information thereof of service, and upgrades current network interface resource; After service finished, described managing medium resource device reclaimed the network interface resource of being distributed.
For addressing the above problem, the present invention also provides the system of data interaction between the content delivery network node media server, this CDN node comprises two or more media servers and at least one exchange control unit, this system comprises information reporting device, receiving system and the packet sending and receiving device, and apparatus for management of information, synchronized transmission device and apparatus for forwarding message in the described exchange control unit synchronously in the described media server; Wherein:
Described information reporting device is used for after described media server starts separately that the IP address and the MAC Address of place matchmaker book server send to described exchange control unit, and in described IP address and/or MAC Address notify described exchange control unit when changing;
Described apparatus for management of information is used for described exchange control unit IP address and the MAC Address according to each media server of receiving, creates and the medium that upgrade this CDN node are transmitted;
Described synchronized transmission device is used for these medium are transmitted and is issued to described synchronous receiving system;
Described synchronous receiving system is used for creating on media server and upgrading these medium and transmit;
Described packet sending and receiving device is used to receive and dispatch message, and when sending message, transmits the MAC Address of obtaining the purpose media server according to these medium, message is carried out the encapsulation of IP message after, send to described apparatus for forwarding message;
The message that described apparatus for forwarding message is used for receiving is forwarded to the purpose media server.
Preferably, also comprise the synchronization request device in the described media server, be used for regularly asking described synchronized transmission device to issue described medium and transmit; And/or
The described synchronized transmission device regularly described medium of multicast is transmitted described media server.
Preferably, the described exchange control unit of this CDN node two or more, described media server medium face has two or more network interfaces, is connected respectively to different exchange control units;
Described information reporting device also is used for also inciting somebody to action after media server starts separately, and the state information of medium face all-network interface sends to described exchange control unit, and the described exchange control unit of real-time informing when the state variation of network interface, whether the link between this network interface of the state representation of certain network interface and the exchange control unit is available;
Described apparatus for management of information also is used for transmitting the state information that also comprises each media server medium face all-network interface at these medium of exchange control unit establishment and maintenance.
Preferably, described media server also comprises the device of Path selection, be used for before packet transmission device sends message, the state of source media server and purpose media server medium face all-network interface during the source media server is transmitted according to these medium earlier, the source media server is selected to the mulitpath through different exchange control units between the purpose media server, and mode is as follows:
If there is not available path, then wouldn't send message;
If an available path is arranged, then use this path;
If two or more available path is arranged, then the policy selection of evenly using by each paths is different from a paths in path last time.
The present invention has adopted a kind of medium to transmit the mechanism that the data message is encapsulated, be used for substituting the addressing of existing ARP protocol stack, it is mutual to reduce between the media server internet message, the packet of having avoided the recovery of MAC Address and heavy learning process and having caused floods, thereby reaches the purpose of improving service quality, guarantee memory reliability.When between media server, carrying out data interaction, also can adopt medium to transmit mechanism and solve the Path selection problem effectively, simultaneously in the process of selecting the Network Transmission path, also can the efficient balance offered load, avoid causing that internal network is congested.
Description of drawings
Fig. 1 is the system architecture diagram of the embodiment of the invention;
Fig. 2 is the overview flow chart of data interactive method between the embodiment of the invention CDN node media server;
Fig. 3 transmits the signaling time-sequence schematic diagram of creation method for embodiment of the invention medium;
Fig. 4 transmits the signaling time-sequence schematic diagram of update method for embodiment of the invention medium;
Fig. 5 is the flow chart of embodiment of the invention media path system of selection;
Fig. 6 is the path schematic diagram of an example of Fig. 5 media path system of selection.
Embodiment
Hereinafter will be elaborated to embodiments of the invention in conjunction with the accompanying drawings.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
In conjunction with Fig. 1 the system architecture of the embodiment of the invention is described earlier:
The system architecture of the embodiment of the invention comprises following components:
Media server: the CDN intranodal is used for media data storage and processing unit;
Exchange control unit: the CDN intranodal is used for medium and transmits;
Two or more media servers and at least one exchange control unit are arranged in the embodiment of the invention system, and these media servers all are connected with exchange control unit.When two or more exchange control units were arranged, each media server was by the network interface of different medium faces and different exchange control unit connections.Be example so that two exchange control units to be arranged among Fig. 1, be expressed as first exchange control unit and second exchange control unit.
Based on above-mentioned framework, data interactive method describes between the CDN node media server that the embodiment of the invention is provided below in conjunction with Fig. 2, and this method comprises:
The address information that will be separately after step 10, media server start and the state information of network interface send to exchange control unit, and when these change the real-time informing exchange control unit;
Network address information comprises IP address and MAC Address, and the state of certain network interface is used to represent whether this network interface is available to the link between the exchange control unit.
Exchange control unit is transmitted these medium and is synchronized to that media server can finish by following one or more modes:
At least one of exchange control unit sends to media server with the update content that these medium are transmitted or these medium are transmitted after the medium that upgrade this locality are transmitted, upgrade local medium after media server is received and transmit;
Media server regularly ask exchange control unit at least one synchronously these medium transmit, the exchange control unit of receiving request is transmitted these medium and is sent to media server, media server upgrades local medium and transmits;
In the exchange control unit at least one regularly these medium of multicast transmitted media server, upgrades local medium after media server is received and transmits.
The source media server sends before the message, the state of source media server and purpose media server medium face all-network interface in can transmitting according to these medium, the source media server is selected to the mulitpath through different exchange control units between the purpose media server:, then wouldn't send message if there is not available path; If an available path is arranged, then use this path; If two or more available path is arranged, then select wherein one.On selection strategy, can write down the path of each selection, but be arranged two or more path time spent in this selection, be different from a paths in path last time by the even policy selection of using of each paths.
Need to prove that the exchange control unit in the CDN node can have only one, be generally two, also have more than two.In another embodiment, the state information that can not have the network interface of each media controller during medium are transmitted, after exchange control unit is received the message of source media server transmission, can search and the purpose media server between Link State, select available path with message to the purpose media server.
The following describes establishment and renewal that medium are transmitted, and the specific implementation of methods such as the encapsulation of message and Path selection.
Please refer to the signaling time-sequence of Fig. 3, with the CDN intranodal two exchange control units being arranged among the figure is example, and the creation method that the present embodiment medium are transmitted comprises:
After step 100:CDN intranodal media server starts, report information such as IP address, MAC Address and network interface state to exchange control unit;
In the present embodiment, when the CDN intranodal had two or more media servers, media server reported to two or more exchange control units.In another embodiment, media server also can only report to one of them exchange control unit such as main exchange control unit, at this moment, will carry out the synchronous renewal that medium are transmitted in real time between main exchange control unit and other the standby exchange control unit.
Step 110: exchange control unit is created medium and is transmitted, IP address, MAC Address and the network interface state information of all media servers of record intranodal;
Step 120: media server sends medium at least one exchange control unit and transmits synchronization request if there is not local media to transmit;
In the present embodiment, when the CDN intranodal has two or more exchange control units, media server is transmitted synchronization request to one of them exchange control unit such as main exchange control unit medium, and first exchange control unit among Fig. 3 works in the master and uses pattern, as main exchange control unit.In another embodiment, media server also can send medium to two or more exchange control units and transmit synchronization request.
Step 130: exchange control unit is received the request that media server sends, and sends medium to media server and transmits syn ack, carries local medium and transmits;
Step 140: the medium that media server sends exchange control unit are transmitted and are saved as local media and transmit.
Please refer to the signaling time-sequence of Fig. 4, with the CDN intranodal two exchange control units being arranged among the figure is example, and the update method that medium are transmitted comprises:
Step 200: intranodal media server IP address, MAC Address and the network interface state is one or more change after, report change information to exchange control unit;
If two or more exchange control units are arranged, media server is reported to two or more exchange control units, and among Fig. 4, media server is to be reported to exchange control unit on two simultaneously.But in another embodiment, also can be reported to one of them exchange control unit such as main exchange control unit, again by carrying out real-time synchronous renewal between each exchange control unit.
Step 210: exchange control unit receives this lastest imformation, and more new media is transmitted;
Among Fig. 4, carry out multicast as first exchange control unit of main exchange control unit, but also can be that two exchange control units all carry out multicast.
Step 240: the media server regularly transmission of at least one in exchange control unit medium is transmitted synchronization request;
Among Fig. 4, media server sends medium to first exchange control unit as main exchange control unit and transmits update request, starts timer simultaneously.
Step 250: the exchange control unit of receiving request returns medium to media server and transmits syn ack, carries the update content that current medium are transmitted or these medium are transmitted;
Step 260: media server upgrades local medium and transmits;
Step 270: at least one of exchange control unit update content that regularly the multicast medium are transmitted or these medium are transmitted is to the media server of intranodal;
Among Fig. 4, carry out the timing multicast, restart timer behind each multicast as first exchange control unit of main exchange control unit.
Step 280: media server upgrades local media and transmits.
Need to prove, above-mentioned steps 220-230, step 240 is to 260, and step 270 constitutes a kind of method of synchronization respectively to 280, and these methods of synchronization can be used separately also and can use simultaneously, and do not have the restriction of sequencing each other.
The method of media path being selected below in conjunction with Fig. 5 and Fig. 6 is described in detail:
Media server internal media face generally has at least two network interfaces, and this sentences two and is example, is connected respectively to different exchange control units.The spendable path of media server generally just has two like this, define with two user modes of representing two paths in media network interface status information field end, four kinds of numerical value 00,01,10,11 can be arranged, " 0 " represents that one of them network interface is unavailable to the link of exchange control unit, and " 1 " expression is available.
As shown in Figure 5, the flow process of Path selection comprises:
Step 310: media server obtains two X in media network interface status information field end of source media server from local media is transmitted;
Step 320: two Y in media network interface status information field end that from local media is transmitted, obtain the purpose media server;
Step 330: get the low dibit X of media network interface status information field in two clauses and subclauses and the arithmetic of Y " with " value, obtain Z=X﹠amp; Y;
Step 340: if Z equals Binary Zero 0, then represent all faults of inner two media paths, can send message;
Step 350: if Z equals Binary Zero 1 or binary one 0, then expression has only an internal media path to connect normally, uses available media path to send media message.
Step 360:, represent that this media server is all normal to two media paths between other media server, can therefrom select an internal media path if Z equals binary one 1.
Can select arbitrarily during selection.Preferably, consider the load sharing design, the path of at every turn selecting is recorded in the global information field; When selecting the path next time and having two or more path to select, then select another outer media path of recorded information, accomplish two media path load sharings.When being arranged more, can use by turns paths.
During based on system architecture shown in Figure 1, please refer to Fig. 6, two paths by first exchange control unit or second exchange control unit can be arranged between source media server and the purpose media server.Wherein, every paths comprises two sections links, one section is the link between source media server and first exchange control unit or second exchange control unit, one section is the link between purpose media server and first exchange control unit or second exchange control unit, the state of the network interface that is connected with first exchange control unit according to the source media server can know whether the link between the source media server and first exchange control unit is normal, and other several sections links are similar.Therefore transmit middle source, purpose media server state by the inquiry medium, just can know whether the source media server arrives each paths of purpose media server available to the network interface of each exchange control unit.For example, the source media server is normal to the network interface state of first exchange control unit, and the purpose media server to the network interface state of first exchange control unit just often, and then the path through first exchange control unit can be used between source media server and the purpose media server.
Flow process to the encapsulation of data message elaborates below:
Step 1: the source media server is transmitted according to local media and is obtained target MAC (Media Access Control) address;
In the embodiment of the invention, media server can obtain the MAC Address of purpose media server according to the IP address of purpose media server from medium are transmitted.Can finish this operation by the bottom layer driving module of media server.
Step 2: the source media server is finished the IP encapsulation to the data message;
The message header field can comprise IP packet number, UDP source port, UDP destination interface, source IP address, purpose IP address, source MAC and target MAC (Media Access Control) address information etc.
Step 3: the source media server sends to the purpose media server with described message through exchange control unit after finishing the IP encapsulation of message;
In the prior art, carry out the data message encapsulation by IP stack, wherein target MAC (Media Access Control) address is realized by the ARP protocol stack, the present invention can be by being encapsulated in the bottom layer driving module of media server, from medium are transmitted, obtain information such as purpose MAC and carry out the data message encapsulation, the broadcasting network resources waste that may produce when having avoided the ARP protocol stack to carry out addressing, phenomenons such as network congestion.
The method that also comprises media server network interface scheduling of resource in the embodiment of the invention method is provided with a managing medium resource device that is connected with each media server in the CDN node, be described in detail as follows:
Step 1: as the media server of service request terminal, to managing medium resource device log on interface resource;
Step 2: the managing medium resource device can provide the media server and the network interface information thereof of service according to the load balancing principle for the media server as service request terminal distributes, and upgrades current network interface resource;
Step 3: after service finished, described managing medium resource device reclaimed the media server and the network interface resource thereof of being distributed.
Correspondingly, the embodiment of the invention also provides the system of data interaction between the CDN node media server.
Wherein, be used for creating and information reporting device, receiving system and synchronization request device, and apparatus for management of information and synchronized transmission device in the exchange control unit synchronously that more the device transmitted of new media comprises media server
Described information reporting device is used for after described media server starts separately that the IP address and the MAC Address of place matchmaker book server send to described exchange control unit, and in described IP address and/or MAC Address notify described exchange control unit when changing; Described information reporting device also is used for after described media server starts the network interface state information being sent to described exchange control unit, and notifies described exchange control unit when described network interface state information changes;
Described apparatus for management of information is used for that described exchange control unit is created according to the IP address of each media server of receiving and MAC Address and the medium that upgrade this CDN node are transmitted; Described apparatus for management of information also is used for these medium of exchange control unit establishment and maintenance and transmits the state information that also comprises each media server medium face all-network interface;
Described synchronized transmission device is used for these medium are transmitted and is issued to described synchronous receiving system;
Synchronization request device in the described media server is used for regularly asking described synchronized transmission device to issue described medium and transmits; And/or the described medium of described synchronized transmission device timing multicast are transmitted described media server;
The device that wherein is used for the data message transmitting-receiving comprises the packet sending and receiving device of media server and the apparatus for forwarding message in the exchange control unit:
Described packet sending and receiving device is used to receive and dispatch message, and when sending message, and the network information in transmitting according to these medium is carried out the encapsulation of IP message, sends to described apparatus for forwarding message;
The message that described apparatus for forwarding message is used for receiving is forwarded to the purpose media server.
The device that wherein is used for the data message transmitting-receiving comprises the packet sending and receiving device of media server and the apparatus for forwarding message in the exchange control unit:
Described packet sending and receiving device is used to receive and dispatch message, and when sending message, transmits the MAC Address of obtaining the purpose media server according to these medium, message is carried out the encapsulation of IP message after, send to described apparatus for forwarding message;
The message that described apparatus for forwarding message is used for receiving sends to the purpose media server.
Have two described network interfaces at least at media server medium face, be connected respectively under the situation of exchange control units different in this CDN node, this system can also comprise the media path choice device of the media server that is used for Path selection, be used for before packet transmission device sends message, the network interface state of source media server and purpose media server in transmitting according to these medium earlier, the source media server is selected to the mulitpath between the purpose media server, and mode is as follows:
If there is not available path, then wouldn't send message;
If an available path is arranged, then use this path;
If two or more available path is arranged, then select wherein one.
Preferably, when described Path selection equipment carries out Path selection, also write down each path of selecting, but arranged two or more path time spent, be different from a paths in path last time by the even policy selection of using of each paths in this selection.
Wherein this system can also comprise the managing medium resource device, is used for the network interface resource of described media server is managed;
After described managing medium resource device is received the resource bid that sends as the media server of service request terminal, can provide the media server and the network interface information thereof of service according to the load balancing principle for this service request terminal distribution, and upgrade current network interface resource; And after service finishes, reclaim the network interface resource of being distributed.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to finish by program, described program can be stored in the computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each module in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly; the present invention also can have other numerous embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the method for data interaction between a content distributing network (CDN) the node media server, this CDN node comprises two or more media servers and at least one exchange control unit, this method comprises:
After described media server starts separately the IP address and the MAC Address of place matchmaker book server send to described exchange control unit, and in described IP address and/or MAC Address notify described exchange control unit when changing;
Described exchange control unit is created according to the IP address of each media server of receiving and MAC Address and the medium that upgrade this CDN node are transmitted, and these medium are transmitted is synchronized to described media server;
When sending message between the described media server, the source media server is transmitted the MAC Address of obtaining the purpose media server according to these medium, message is carried out the IP encapsulation after, send to the purpose media server through described exchange control unit.
2. the method for claim 1 is characterized in that, described exchange control unit is transmitted these medium and is synchronized to described media server and finishes by following one or more modes:
In the described exchange control unit at least one sends to described media server with the update content that these medium are transmitted or these medium are transmitted after the medium that upgrade this locality are transmitted, upgrade local medium after described media server is received and transmit;
Described media server regularly ask in the described exchange control unit at least one synchronously these medium transmit, the exchange control unit of receiving request is transmitted these medium and is sent to described media server, described media server upgrades local medium and transmits;
In the described exchange control unit at least one regularly these medium of multicast transmitted described media server, upgrades local medium after described media server is received and transmits.
3. method as claimed in claim 1 or 2 is characterized in that:
The described exchange control unit of this CDN node has two or more, and described media server medium face has two or more network interfaces, is connected respectively to different exchange control units;
Also inciting somebody to action separately after described media server starts, the state information of medium face all-network interface sends to described exchange control unit, and the described exchange control unit of real-time informing when the state variation of network interface, whether the link between this network interface of the state representation of certain network interface and the exchange control unit is available;
The state information that also comprises each media server medium face all-network interface during described exchange control unit establishment and these medium of safeguarding are transmitted.
4. method as claimed in claim 3 is characterized in that:
Described source media server sends before the message, also comprise the step of carrying out Path selection: the state of source media server and purpose media server medium face all-network interface during the source media server is transmitted according to these medium earlier, the source media server is selected to the mulitpath through different exchange control units between the purpose media server, and mode is as follows:
If there is not available path, then wouldn't send message;
If an available path is arranged, then use this path;
If two or more available path is arranged, then select wherein one.
5. method as claimed in claim 4 is characterized in that:
In the described step of carrying out Path selection, the each path of selecting of record also, but in this selection there is two or more path time spent, the policy selection of evenly using by each paths is different from a paths in path last time.
6. the method for claim 1 is characterized in that:
Described CDN node also comprises the managing medium resource device, is used for the network interface resource of described media server is managed;
Before obtaining service as the media server of service request terminal from described media server, earlier to described managing medium resource device log on interface resource, described managing medium resource device distributes for this service request terminal according to the load balancing principle can provide the media server and the network interface information thereof of service, and upgrades current network interface resource; After service finished, described managing medium resource device reclaimed the network interface resource of being distributed.
7. the system of data interaction between a content distributing network (CDN) the node media server, this CDN node comprises two or more media servers and at least one exchange control unit, this system comprises information reporting device, receiving system and the packet sending and receiving device, and apparatus for management of information, synchronized transmission device and apparatus for forwarding message in the described exchange control unit synchronously in the described media server; Wherein:
Described information reporting device is used for after described media server starts separately that the IP address and the MAC Address of place matchmaker book server send to described exchange control unit, and in described IP address and/or MAC Address notify described exchange control unit when changing;
Described apparatus for management of information is used for described exchange control unit IP address and the MAC Address according to each media server of receiving, creates and the medium that upgrade this CDN node are transmitted;
Described synchronized transmission device is used for these medium are transmitted and is issued to described synchronous receiving system;
Described synchronous receiving system is used for creating on media server and upgrading these medium and transmit;
Described packet sending and receiving device is used to receive and dispatch message, and when sending message, transmits the MAC Address of obtaining the purpose media server according to these medium, message is carried out the encapsulation of IP message after, send to described apparatus for forwarding message;
The message that described apparatus for forwarding message is used for receiving is forwarded to the purpose media server.
8. system as claimed in claim 7 is characterized in that:
Also comprise the synchronization request device in the described media server, be used for regularly asking described synchronized transmission device to issue described medium and transmit; And/or
The described synchronized transmission device regularly described medium of multicast is transmitted described media server.
9. as claim 7 or 8 described systems, it is characterized in that:
The described exchange control unit of this CDN node has two or more, and described media server medium face has two or more network interfaces, is connected respectively to different exchange control units;
Described information reporting device also is used for also inciting somebody to action after media server starts separately, and the state information of medium face all-network interface sends to described exchange control unit, and the described exchange control unit of real-time informing when the state variation of network interface, whether the link between this network interface of the state representation of certain network interface and the exchange control unit is available;
Described apparatus for management of information also is used for transmitting the state information that also comprises each media server medium face all-network interface at these medium of exchange control unit establishment and maintenance.
10. system as claimed in claim 9 is characterized in that;
Described media server also comprises path selection device, be used for before packet transmission device sends message, the state of source media server and purpose media server medium face all-network interface in transmitting according to these medium earlier, the source media server is selected to the mulitpath through different exchange control units between the purpose media server, and mode is as follows:
If there is not available path, then wouldn't send message;
If an available path is arranged, then use this path;
If two or more available path is arranged, then the policy selection of evenly using by each paths is different from a paths in path last time.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010523242.0A CN101977148B (en) | 2010-10-26 | 2010-10-26 | Data exchange method and system of node media servers of content delivery network |
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| CN201010523242.0A CN101977148B (en) | 2010-10-26 | 2010-10-26 | Data exchange method and system of node media servers of content delivery network |
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| CN101977148A true CN101977148A (en) | 2011-02-16 |
| CN101977148B CN101977148B (en) | 2015-01-28 |
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| CN201010523242.0A Expired - Fee Related CN101977148B (en) | 2010-10-26 | 2010-10-26 | Data exchange method and system of node media servers of content delivery network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018000617A1 (en) * | 2016-06-29 | 2018-01-04 | 乐视控股（北京）有限公司 | Method for updating database, and scheduling server |
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| US20040073596A1 (en) * | 2002-05-14 | 2004-04-15 | Kloninger John Josef | Enterprise content delivery network having a central controller for coordinating a set of content servers |
| CN101005456A (en) * | 2006-12-30 | 2007-07-25 | 华为技术有限公司 | Medium stream repeat method and medium server |
| CN101026631A (en) * | 2006-12-28 | 2007-08-29 | 中兴通讯股份有限公司 | CDN structure based IPTV system media payment system |
| CN101582834A (en) * | 2008-05-16 | 2009-11-18 | 华为技术有限公司 | Updating method, equipment and system of forwarding table during service transmission of Ethernet |
| CN101741712A (en) * | 2008-11-18 | 2010-06-16 | 华为技术有限公司 | Device, system and method supporting base station data exchange |
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| US20040073596A1 (en) * | 2002-05-14 | 2004-04-15 | Kloninger John Josef | Enterprise content delivery network having a central controller for coordinating a set of content servers |
| CN101026631A (en) * | 2006-12-28 | 2007-08-29 | 中兴通讯股份有限公司 | CDN structure based IPTV system media payment system |
| CN101005456A (en) * | 2006-12-30 | 2007-07-25 | 华为技术有限公司 | Medium stream repeat method and medium server |
| CN101582834A (en) * | 2008-05-16 | 2009-11-18 | 华为技术有限公司 | Updating method, equipment and system of forwarding table during service transmission of Ethernet |
| CN101741712A (en) * | 2008-11-18 | 2010-06-16 | 华为技术有限公司 | Device, system and method supporting base station data exchange |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018000617A1 (en) * | 2016-06-29 | 2018-01-04 | 乐视控股（北京）有限公司 | Method for updating database, and scheduling server |
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| CN101977148B (en) | 2015-01-28 |
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