CN101087246B - A system and method for realizing network layer multicast service and service management - Google Patents
A system and method for realizing network layer multicast service and service management Download PDFInfo
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Abstract
The invention provides general plying multicast service system, which includes multicast receiver, multicast source, multicast user control device, control device for multicast source, pure multicast relay device and management platform for multicast service; and it also discloses relative management method for multicast service. Using the system and method, it can realize the management and running for multicast service. The invention solves the problems of management and running based on multicast communication, and especially provides the function of user discrimination and charging.
Description
Technical field
The invention belongs to the Internet and the communications field, be applicable to, described a multicast service system that can reach basic service operation requirement, and, propose the method for related service management at this multicast service system based on the miscellaneous service of group mode communication.
Background technology
Multicast is a kind of communication pattern different with the point-to-point clean culture, it is a kind of communication pattern based on group, on the data the Internet based on the IP agreement, formulated the relevant control protocol of supporting cast communication, as the IGMP agreement between main frame and the multicast router, the multicast routing protocol between the multicast router etc.
The working model figure of basic multicast business as shown in Figure 1.
Mainly comprise 3 class entities in the system of Fig. 1, a class is that multicast recipient 100, a class are that multicast trunking 200, a class are multicast sources 300.Wherein multicast recipient and multicast source are reciprocity in a group, promptly all regard the main frame host of multicast as, and the multicast trunking often are counted as router Router.
Multicast source 300 and multicast recipient 100, mainly finish multicast group establishment, add, leave, and in real time with multicast trunking 200 by IGMP (Internet GroupManagement Protocol) message mutual cast communication state; And multicast trunking 200 is main and multicast host (100 and 300) obtains the multicast state change information by the IGMP interacting message, safeguard that local multicast transmits, and flux of multicast is carried out port according to multicast forward table duplicate, to pass through multicast routing protocol between the multicast trunking simultaneously, intercourse multicast state information, safeguard the multicast tree information in the multicast routed domain.
The basic procedure of existing cast communication business is as shown in Figure 2:
(1) multicast source is created multicast group by IGMP;
(2) multicast router that connects multicast source upgrades multicast forward table;
(3) multicast information of this group of exchange between the multicast router generates multicast tree;
(4) the multicast recipient is that the multicast user passes through IGMP message and adds this multicast group;
(5) multicast router that connects the user upgrades multicast forward table;
(6) exchange multicast information between the multicast router, upgrade multicast tree;
(7) multicast packet sends to multicast router from multicast source;
(8) according to multicast tree multicast packet is duplicated between multicast router;
(9) incoming multicast user's multicast router carries out multicast packet at user port and duplicates;
(10) the multicast recipient receives multicast packet;
(11) the multicast recipient leaves multicast group;
(12) multicast router that connects the user upgrades multicast table;
(13) exchange multicast information between the multicast router, upgrade multicast tree;
(14) periodically check under this multicast router, whether to also have user at this multicast group?
(15) if, then delete multicast forward table at this group not at the multicast user of this group.
(16) exchange multicast information between the multicast router, upgrade multicast tree.
The subject matter that exists
Aforesaid measured IGMP agreement and multicast routing protocol, main standard the flow process and the processing method of group communication, but because shortage is to the authentication and the billing function of multicast user and multicast source, can not realize differentiated service, differentiation user's multicast tactical management and control, the cast communication group all can freely be created, adds and be left to All hosts.By basic IGMP and multicast routing protocol, after multicast host, the multicast router networking, can't form the multicast service system that to run thus.
Although at present, the multicast service system that some test operations have been arranged, stream media live service system such as IPTV for example, can be by the multicast trunking that inserts the multicast user being carried out the mode of static configuration, operations such as the multicast of controlling the multicast user adds, leaves, but service fulfillment, change and efficiency of managing are all lower.
Summary of the invention
The present invention proposes a general multicast service system of runing, mainly comprise multicast recipient, multicast source, multicast user's control appliance, multicast source controlling equipment, pure multicast trunking and multicast service management platform; Relevant multicast service management method has been proposed simultaneously.Utilize this system and method, can realize the management and the operation of multicast service.
The invention solves management and problems of operation, the function of subscription authentication and charging especially is provided based on the various multicast services of group mode communication.
The invention provides a kind of multi-cast system, comprise multicast recipient (100), multicast source (300), pure multicast trunking (600), it is characterized in that described system also comprises: multicast user's control appliance (400), described multicast user's control appliance (400) is connected to one or more multicast recipients (100); Multicast source controlling equipment (500), described multicast source controlling equipment (500) is connected to one or more multicast sources (300); Pure multicast trunking (600) is connected to multicast user's control appliance (400), multicast source controlling equipment (500), and pure multicast trunking (600) is interconnected with one another; Multicast service management platform (700) comprises multicast user's administration module (7001), multicast source administration module (7003); Wherein multicast source controlling equipment (500) is intercepted and captured the multicast request to create of multicast source (300), and multicast source (300) is authenticated at the request of multicast source (300), wherein multicast source controlling equipment (500) is initiated authentication request to the multicast source administration module (7003) of multicast service management platform (700), and determines whether to allow this multicast source (300) to create this multicast group according to authentication result; And, the multicast that wherein said multicast user's control appliance (400) is intercepted and captured multicast user (100) joins request, and join request at multicast user's (100) multicast multicast user (100) is initiated authentication requesting, wherein said multicast user's control appliance (400) is initiated multicast user's authentication request to multicast user's administration module (7001) of multicast service management platform (700), and determines whether to allow this multicast user (100) to add a multicast group according to authentication result.
The present invention also provides a kind of method that is used for multicast, comprises the steps:
(1) multicast source (300) sends request to create a new multicast group to multicast source controlling equipment (500);
(2) request to create in multicast source controlling equipment (500) receiving group source (300) is collected the authentication information of this multicast source (300), and initiates an authentication request of creating multicast group to multicast source administration module (7003);
(3) multicast source administration module (7003) is verified processing to authentication request, and to multicast source controlling equipment (500) return authentication result: if authentication failed, then return authentication failed message and failure cause; If be proved to be successful, then return and be proved to be successful message;
(4) after multicast source (300) authentication success, this multicast source (300) is published, so that multicast user (100) selects and adds;
(5) multicast user (100) selects a multicast source of having issued (300), and wherein multicast user (100) joins request to one of user in multicast service control appliance (400) transmission;
(6) joining request of multicast user's control appliance (400) receiving group user (100) collected the authentication information of this multicast user (100), and initiates authentication request to multicast user's administration module (7001);
(7) multicast user's administration module (7001) is received the authentication request that multicast user's control appliance (400) is initiated, authentication information in the request is verified, and return the checking result: if authentication failed is then returned authentication failed message and failure cause to multicast user's control appliance (400); If be proved to be successful, then return and be proved to be successful message;
(8) multicast user's control appliance (400) carries out the multicast message exchange with the multicast trunking (600) of upstream, upgrades corresponding multicast information; And
(9) described multicast user (100) receives the multicast packet of corresponding multicast source (300).
Description of drawings
Fig. 1 has shown the illustraton of model of the system of basic multicast service of the prior art.
Fig. 2 has shown the basic service flow process figure of existing multicast service.
Fig. 3 has shown a kind of preferred embodiment of the multicast service system of runing of the present invention.
Fig. 4 has shown a kind of basic service flow process of the multicast service system of runing of the present invention.
Fig. 5 has shown a kind of preferred embodiment of multicast user's control appliance of invention.
System and method disclosed herein has overcome the shortcoming of above-mentioned prior art in its various embodiment, and has realized the advantage that this system and method can not exist before.
More completely describe the present invention below with reference to accompanying drawing, the preferred embodiments of the present invention have been shown in the accompanying drawing.But the present invention may be embodied in many other forms, and is not appreciated that and is limited to embodiment described here; It is for disclosure will be detailed and complete that these embodiment are provided on the contrary, and will intactly scope of the present invention be conveyed to those skilled in the art.From start to finish similarly label is all represented similar elements.
Under the help of the instruction that provides in aforementioned description and relevant drawings, those skilled in the art in the invention will expect many modifications of the present invention and other embodiment.Therefore, be appreciated that to the invention is not restricted to disclosed specific embodiment, revise with other embodiment and want to be included in the scope of appended claims.Though adopted particular term here, they just use on general descriptive sense, rather than are used to limit purpose.
Embodiment
Below with reference to method according to an embodiment of the invention, device (being system) block diagram and flow chart description the present invention.Be appreciated that each piece of block diagram and flow chart and the combination of the piece in block diagram and the flow chart can be realized by computer program instructions respectively.These computer program instructions can be loaded on all-purpose computer, special-purpose computer or other programmable data processing unit, to produce machine, so that the instruction of carrying out on computer or other programmable data processing unit produces the device of the block diagram that is used for executive system or flow chart block appointment.
These computer program instructions also can be stored in the computer-readable memory, this computer-readable memory can instruct computer or other programmable data processing unit by ad hoc fashion work, so that the instruction that is stored in the computer-readable memory produces a product, wherein comprise the command device of realizing the function of appointment in one or more flow chart blocks.Computer program instructions also can be loaded on computer or other programmable data processing unit, to cause the sequence of operations step on computer or other programmable devices, to be performed, to produce computer implemented process, so that the instruction of carrying out on computer or other programmable devices is provided for realizing the step of the function of appointment in one or more flow chart blocks.
Therefore, the piece support of block diagram and flow chart is used to carry out the combination of the device of appointed function, the combination of step that is used to carry out appointed function and the program instruction means that is used to carry out appointed function.It is also understood that each piece of block diagram and flow chart and the combination of the piece in block diagram and the flow chart can be realized by the combination of the hardware based dedicated computer system of carrying out appointed function or step or specialized hardware and computer instruction.
The demonstration that Fig. 3 is exemplary a kind of general multicast service system of runing according to an embodiment of the invention.
As shown in Figure 3, native system can comprise with lower device:
Multicast recipient 100: initiate mainly that multicast joins request, multicast leaves request, can respond the authentification of user requirement of multicast user's management equipment to its initiation.
Multicast source 300: mainly create multicast group, can respond of the multicast source authentication requirement of multicast source management equipment to its initiation.
Multicast source 300 is connected to multicast source controlling equipment 500.
Multicast user's control appliance 400: described multicast user's control appliance 400 is connected to one or more multicast recipients 100.The multicast that multicast user's control appliance 400 can be intercepted and captured the user adds, the leave group message bag, and adds and leave group message at user's multicast, initiates authentication requesting to the user, or extracts user's authentication information and multicast group information automatically.
Multicast user's control appliance 400 is also connected to the multicast user's administration module 7001 in the multicast service management platform 700, it can initiate user authentication request to multicast user's administration module 7001 of multicast service management platform 700, and reception authorization response, according to authentication result, determine whether to allow this user to add particular multicast group.The multicast user's control appliance 400 minimum basic functions that should support the multicast trunking.
Multicast source controlling equipment 500: described multicast source controlling equipment 500 is connected to one or more multicast sources 300.Multicast source controlling equipment 500 can be intercepted and captured the multicast of multicast source and create the message bag, and at the issue of multicast source, initiates authentication requesting to multicast source, or extract the authentication message and the multicast group information of multicast source automatically.
Simultaneously, multicast source controlling equipment 500 is also connected to the multicast source administration module 7003 in the multicast service management platform 700, initiate authentication request with multicast source administration module 7003 to multicast service management platform 700, and reception authorization response, according to authentication result, determine whether to allow this multicast source to create this multicast group.The multicast source controlling equipment 500 minimum basic functions that should support the multicast trunking.
Pure multicast trunking 600: it is connected to multicast user's control appliance 400, multicast source controlling equipment 500, and can link each other.Pure multicast trunking 600 can upgrade multicast information, also can create and safeguard multicast tree and transmit, and can carry out the equipment of multicast replication according to multicast forward table by IGMP or multicast routing protocol.
Multicast service management platform 700: comprise multicast user's administration module 7001, multicast equipment administration module 7002, multicast source administration module 7003, multicast accounting management module 7004, multicast service administration module 7005.Described multicast service management platform can be finished the user management relevant with the multicast service operation and management, accounting management, service management, equipment control and multicast source management.Wherein submodule 7001-7005 can be accomplished in several ways, and for example realizes by software.
Referring to accompanying drawing 4, exemplary demonstration the use flow process of the multicast service supported of said system.
(1) main frame 300 of multicast source sends IGMPReport message to multicast source controlling equipment 500 and applies for creating new multicast group, with the new multicast source of request issue;
(2) multicast source controlling equipment 500 receives the IGMP message of the new establishment group of multicast source, gather the part authentication information of multicast source, and require multicast source to import other relevant authentication information, gather these authentication informations after, initiate the authentication request that multicast group are created to multicast source administration module 7003;
(3) authentication information in 7003 pairs of multicast authentication requests of multicast source administration module is verified processing.In addition, can also write down relevant authorization information,, charge and the inquiry use for following as time, result, parameters for authentication etc.
(4) multicast source administration module 7003 is to multicast source controlling equipment 500 return authentication results.If authentication failed, then return authentication failed message and failure cause, 7003 will abandon the IGMP message of this application establishment group that multicast source 300 sends; If be proved to be successful, then return and be proved to be successful message;
(5) be proved to be successful after, need carry out the admissible parameter configuration of this multicast group to pure multicast trunking 600, by 7003 relevant multicast configuration information is sent to multicast equipment administration module 7002, by the actual parameter configuration change of multicast equipment administration module 7002 realizations to the multicast trunking;
(6) after multicast source is created authentication success, multicast source administration module 7003 notice multicast service management modules 7005 are issued this multicast source, are convenient to the multicast user and select and add;
(7) multicast user 100 carries out multicast and adds by clicking the multicast source of having issued.Add fashionablely, multicast user 100 can send an IGMP report to user in multicast service control appliance 400 and add message, and request adds this multicast group;
(8) after user in multicast service control appliance 400 receives the IGMP report adding message of multicast user's 100 request adding multicast group, gather associated user's authentication information, and require the user to import other relevant authentication information, after gathering these authentication informations, initiate authentication request to multicast user's administration module 7001;
(9) multicast user's administration module 7001 is received after 400 multicast user's authentication request of initiating, and the authentication information in the request is verified processing.In addition, can write down relevant authorization information,, charge and the inquiry use for following as time, result, parameters for authentication etc.
(10) multicast user's administration module 7001 returns the checking result to multicast user's control appliance 400.If authentication failed is then returned authentication failed message and failure cause; If be proved to be successful, then return and be proved to be successful message, and write down the zero-time that this user adds this group, use for following the charging;
(11) if authentication success, 400 couples of these users' of this multicast user's control appliance IGMP Report adds message, carries out igmp proxy and aggregation process, upgrades multicast table;
(12) multicast user's control appliance 400 carries out the multicast message exchange with upstream multicast trunking 600, upgrades multicast information;
(13) multicast routing protocol by standard exchanges the multicast lastest imformation between the multicast trunking, guarantees that finally the user normally joins the multicast tree of this group;
(14) user of this multicast source 300 just can normally receive and handle the multicast packet of this group.
(15) in addition, multicast recipient 100 is in the process of using multicast service, should be according to 90 seconds cycle, regularly send IGMP report and keep message to multicast user's control appliance 400, after in case multicast user's control appliance 400 receives this message, then the reset timer 1 of this multicast list of specific aim is 120 seconds, restarts countdown;
(16) in addition, multicast recipient 100 is in the process of using multicast service, multicast user's control appliance 400 can be kept the multicast state of this user at this group, and 2 timers are set, timer 1 is set to 120 seconds, if countdown in promptly 120 seconds returns zero, does not receive that also this user reports the Report at this group to keep message automatically, then initiate one to the IGMP Query message of this user at this group, it is 10 seconds that timer 2 is set simultaneously; If query messages is then retransmitted in no response in 10 seconds, and to supplement timer 2 with money be 10 seconds;
(17) if this multicast state project is then deleted in continuous three no responses; Send " this user leaves this group " message to multicast user's administration module 7001 simultaneously; Multicast user's administration module 7001 recording user time departures charge and the inquiry use for following;
(18) in addition, in use, the multicast user also can initiatively send the IGMPleave leave group message, and group of notifications broadcasting user control appliance 400 leaves this group;
(19) in addition, after multicast user's control appliance 400 is received this leave group message, carry out multicast agent and aggregation process, upgrade multicast table;
(20) multicast user's control appliance 400 is to multicast user's administration module 7001 report of user leave message, and multicast user's administration module 7001 recording user time departures charge and the inquiry use for following.
Annexation between each module of said system and method for transmitting signals can adopt following method to realize:
(1)
Interface 1---interface, interface 2--300 and 500 interface, interface 3--500 and 600 interfaces between 100 and 400, a kind of execution mode of the interface between the interface 4----400 and 600:
Above-mentioned interface all adopts the IGMP of IETF, Internet Group ManagementProtocol agreement, protocol version can adopt v1 and v2 version, IGMP is a kind of multicast control protocol that is operated between main frame host and the multicast router, be the network layer protocol that is carried on the IP layer, as shown in table 1 below.
| MAC?header | IP?header | IGMP?packet |
Table 1
Up to now, IETF has issued v1 (rfc1112), v2 (rfc2236) and three versions of V3 (rfc3376) altogether at IGMP, and wherein extensive use mainly comprises IGMP v1 and IGMPv2 version.
(1) IGMP v1 introduces
The message format definition is as shown in table 2:
0123 4567 89012345 6789012345678901
++++ ++++ ++++++++ +++++++++++++++++
｜Version｜Type｜Unused｜Checksum｜
+++++++++++++++++++++++++++++++++
｜ Group?Address ｜
+++++++++++++++++++++++++++++++++
Table 2
Wherein:
Version is set to 0001, sign igmp version 1;
Type is set to 1=Host Membership Query, 2=HostMembership Report;
Unused is set to 0, and the recipient ignores this position;
The Checksum16 bit, be set to IGMP overall message content verification and;
Group Address is set to 0 in query message, the group address of being reported is set in the report message;
When adopting this release protocol, groundwork flow process of the present invention is described below:
Adition process: at first main frame Host sends IGMP Membership Report message, the source IP address of this IGMP bag is this host address, purpose IP address is 224.0.0.2 (representing all multicast routers), the Version of IGMP message is made as 1, Type is set to 2, and Group Address is set to the multicast address that main frame is wanted the group that adds; Coupled then multicast router receives after this Report bag, just thinks that this main frame has added this multicast group.
Query script: multicast router regularly sends IGMP query message by designated port, source IP address is set to the interface IP address of this multicast router, purpose IP address setting is 224.0.0.1 (representing all multicasts), version is made as 1 in the IGMP message, Type is made as 1, and Group Address is made as 0.
The inquiry response process: main frame receives the Query message from router, then must be in 10 second, and upwards transmission has the Report message of own added group address as the answer to this Query message.
Leave process: multicast router regularly sends query message by designated port, if several polling cycle does not all have response of host at the Report message that is buffered in certain group, thinks that then All hosts has all left this group under this interface.
(2) IGMP v2 background introduction
The message format definition is as shown in table 3:
01234567 89012345 6 7 8 901234567890 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
｜Type ｜Max?Resp?Time?｜ Checksum ｜
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
｜ Group?Address ｜
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Table 3
Wherein:
Type can be set to:
0x11=Membership Query comprises two kinds of query messages, and a kind of is General Query message, and this moment, the purpose IP address setting of query messages was 224.0.0.1, and Group Address is set to 0.0.0.0; A kind of is group-specific query message, and the purpose IP address setting of query messages is the source IP address that receives Leave message, and Group Address is set to wish the multicast address of the group of inquiring about;
0x16＝Version?2?Membership?Report；
0x17＝Leave?Group；
0x12＝Version?1?Membership?Report。
Max Response Time can be set to: the maximum latency that allows to be returned by the inquiry main frame Report message.
The Checksum16 bit, be set to IGMP overall message content verification and;
Group Address can be set to: be set to 0 in general polling query message, be set to the group address of being inquired about in group-specific query message, be set to the group address of being reported and leaving in report and leave message.
When adopting this release protocol, workflow of the present invention is described below:
Adition process: at first main frame Host sends IGMP Membership Report message, the source IP address of this IGMP bag is this host address, purpose IP address is 224.0.0.2 (representing all multicast routers), the Type of IGMP message is set to 0x12 or 0x16, and GroupAddress is set to the multicast address that main frame is wanted the group that adds; Coupled then multicast router receives after this Report bag, just thinks that this main frame has added this multicast group.
Query script: the multicast router of the same network segment is by selecting, one that formulates interface IP address minimum is the querying router of appointment, after can regularly sending the general query message of IGMP or receive certain message of leaving certain group, initiate particular group query message at this group by designated port.Source IP address is set to the interface IP address of this multicast router, and purpose IP address setting is 224.0.0.0 (representing all multicast host), and Type is made as 0x11 in the IGMP message, and Group Address is made as 0 or particular group.
The inquiry response process: main frame receives the general Query message from router, then must be in 10 seconds, upwards transmission has the Report message of own added group address as the answer to this Query message, receive the query messages of particular group, the main frame that has then added this group sends Report message and replys.
Leave process: when main frame wishes to leave certain multicast group, send Leave message, after multicast router receives multicast message, just think that this main frame has left this group, but can initiate a group-specific query message at this group simultaneously,, then represent to also have under this interface the multicast user of this group if other response of host is arranged, if do not have other response of host in several cycles of appointment, then thinking has not had the user of this multicast group under this interface.
Implementation between the above-mentioned interface only is exemplary, and those skilled in the art can take multiple prior art to realize, only otherwise deviate from purport of the present invention.
(2) interface 5---a kind of execution mode of the interface between 400 and 7001:
The present invention will by the Radius standard agreement is carried out field extension, realize the authentication to the multicast user between 400 and 7001.Wherein 400 equipment are as the client of Radius agreement, and 7001 server ends as the Radius agreement.
Radius is a remote dial visit access control protocol, is existing standard, but the present invention expands it, and is as described below.
Radius is a kind of message format that is operated on the UDP/IP, and message format meets the TLV form, i.e. field type, field length, field value; 400 equipment are as authentication requester Client, each field that need authenticate according to TLV format organization, and send to 7001 user management module Server, and 7001 explain T and V value, and the local pre-configured user data of inquiry carries out corresponding checking.
The standard of extended field is as shown in table 4 below:
| The Type code | The Type implication | Length | The Value attribute |
| 1 | UserName | <＝20，>＝6 | The String/ user name |
| 2 | UserPassword | >＝18.<＝130 | The String/ password |
| 99 | LineID | >＝18，<＝130 | String/ circuit ID |
| 98 | UserIP | 6 | The String/ IP address |
| 97 | GroupIp | 6 | String/ group IP address |
| 96 | Operation | <＝10 | String/ adds, and leaves |
Table 4
(3) interface 6---a kind of execution mode of the interface between different 600 equipment
600 equipment can be born by the router of supporting multicast as pure multicast trunking, move multicast routing protocol between the multicast router, as PIM (agreement is multicast independently), MOSPF (multicast OSPF) etc.
Implementation between the above-mentioned interface only is exemplary, and those skilled in the art can take multiple prior art to realize, only otherwise deviate from purport of the present invention.
(4) interface 7---a kind of execution mode of the interface between 500 equipment and 7003
Can adopt the Radius agreement of standard, realize authentication to multicast source by protocol extension, wherein 500 equipment are as the client of Radius agreement, and 7003 server ends as the Radius agreement.
Radius is a remote dial visit access control protocol, is existing standard, but the present invention expands it, and is as described below.
Radius is a kind of message format that is operated on the UDP/IP, and message format meets the TLV form, i.e. field type, field length, field value; 500 equipment are as authentication requester Client, each field that need authenticate according to TLV format organization, and send to 7003 multicast source administration module Server, and 7003 explain T and V value, and the local pre-configured multicast source management data of inquiry carries out corresponding checking.
Require the field specification such as the following table 5 of authentication:
| The Type code | The Type implication | Length | The Value attribute |
| 1 | SourceName | <＝20，>＝6 | String/ multicast source title |
| 2 | SourcePassword | >＝18，<＝130 | String/ multicast source password |
| 99 | LineID | >＝18，<＝130 | String/ line attachment ID |
| 98 | SourceIP | 6 | String/ multicast source IP address |
| 97 | GroupIp | 6 | String/ multicast group IP address |
| 96 | Operation | <＝10 | The String/ issue, deletion |
Table 5
(5) interface 8---a kind of execution mode of 7002 and 400 interface, interface 9--7002 and 600 s' interface, interface 10--7002 and 500 s' interface:
Can be according to the degree of support of concrete equipment to agreement under the network management, the option interface agreement is as snmp simple network management protocol, CLI order line agreement, TL1 agreement etc.
Implementation between the above-mentioned interface only is exemplary, and those skilled in the art can take multiple prior art to realize, only otherwise deviate from purport of the present invention.
Fig. 5 has shown the module map of a kind of multicast user's control appliance 400 that can realize igmp proxy and gather according to an embodiment of the invention.
As shown in Figure 5, multicast user's control appliance 400 can comprise descending multicast packets letter sorting module, descending multicast packets processing module, up multicast packets letter sorting module, up multicast packets processing module, Router emulation module, Host emulation module, multicast agent control module and multicast data communication control module by forming with lower module.
Should be noted that above-mentioned all aspect of the present invention can realize, for example uses application-specific integrated circuit (ASIC) (ASIC), all-purpose computer or other hardware equivalents to realize in the combination of software and/or software and hardware.In one embodiment, described all module can be loaded in the memory and by processor and carry out, to realize above-mentioned functions.Like this, module of the present invention and process (comprising the data structure that is associated) can be stored on computer-readable medium or the carrier wave, for example RAM memory, magnetic driving or optical drive or disk or the like.
Will be understood that in one embodiment, the method step of being discussed is to be carried out by (one or more) suitable processor that execution is stored in processing (the being computer) system of the instruction (code segment) in the storage device.Also will understand, the present invention is not limited to any specific implementation or programming technique, and the present invention can realize that the technology of function as described herein realizes with any suitable being used to.The present invention is not limited to any specific programming language or operating system.
Though be shown specifically and described the various embodiment that combine instruction of the present invention here, those skilled in the art is easy to design many other and still combines the various embodiment of these instructions.
Claims (18)
1. a multi-cast system comprises multicast recipient (100), multicast source (300), pure multicast trunking (600), it is characterized in that described system also comprises:
Multicast user's control appliance (400), described multicast user's control appliance (400) is connected to one or more multicast recipients (100);
Multicast source controlling equipment (500), described multicast source controlling equipment (500) is connected to one or more multicast sources (300);
Pure multicast trunking (600) is connected to multicast user's control appliance (400), multicast source controlling equipment (500), and pure multicast trunking (600) is interconnected with one another;
Multicast service management platform (700) comprises multicast user's administration module (7001), multicast source administration module (7003),
Wherein multicast source controlling equipment (500) is intercepted and captured the multicast request to create of multicast source (300), and multicast source (300) is authenticated at the request of multicast source (300), wherein multicast source controlling equipment (500) is initiated authentication request to the multicast source administration module (7003) of multicast service management platform (700), and determines whether to allow this multicast source (300) to create multicast group according to authentication result;
The multicast that wherein said multicast user's control appliance (400) is intercepted and captured multicast user (100) joins request, and join request at multicast user's (100) multicast multicast user (100) is initiated authentication requesting, wherein said multicast user's control appliance (400) is initiated multicast user's authentication request to multicast user's administration module (7001) of multicast service management platform (700), and determines whether to allow this multicast user (100) to add a multicast group according to authentication result.
2. multi-cast system according to claim 1, wherein multicast service management platform (700) also comprises multicast equipment administration module (7002), is used to pure multicast trunking (600) to carry out the admissible parameter configuration of the multicast group of licensed authentication,
Wherein multicast source administration module (7003) sends to multicast equipment administration module (7002) with relevant multicast configuration information, is realized the actual parameter of pure multicast trunking (600) is disposed by multicast equipment administration module (7002).
3. multi-cast system according to claim 1, wherein multicast service management platform (700) also comprises multicast service administration module (7005), wherein after multicast source (300) authentication success, multicast source administration module (7003) notice multicast service management module (7005) is issued this multicast source, is convenient to multicast user (100) and selects to add.
4. multi-cast system according to claim 1, wherein multicast service management platform (700) also comprises multicast accounting management module (7004), wherein multicast source administration module (7003) writes down multicast source (300) and/or multicast user's (100) relevant information, comprise parameters for authentication, joining day, time departure, service traffics, speed etc. one of at least, and be transferred to multicast accounting management module (7004) so that multicast source (300) and/or multicast user (100) are chargeed.
5. multi-cast system according to claim 1, pure multicast trunking (600) upgrades multicast information by IGMP or multicast routing protocol, and creates and safeguard multicast tree and transmit, and carries out multicast replication according to multicast forward table.
6. multi-cast system according to claim 1, wherein multicast user's control appliance (400) is also supported the basic function of multicast trunking.
7. multi-cast system according to claim 1, wherein multicast source controlling equipment (500) is also supported the basic function of multicast trunking.
8. multi-cast system according to claim 1, wherein between multicast user (100) and the multicast user's control appliance (400), between multicast source (300) and the multicast source controlling equipment (500), between multicast source controlling equipment (500) and the pure multicast trunking (600) and all adopt IGMPv1 or IGMP v2 agreement to carry out alternately between multicast user's control appliance (400) and the pure multicast trunking (600).
9. multi-cast system according to claim 1, wherein between multicast user's control appliance (400) and the multicast user's administration module (7001), adopt the Radius agreement of expansion to carry out alternately between multicast source controlling equipment (500) and the multicast source administration module (7003).
10. the multicast user control appliance (400) of a use in multi-cast system as claimed in claim 1, described multicast user's control appliance (400) is connected to multicast user (100), it is characterized in that
Described multicast user's control appliance (400) comprises descending multicast packets letter sorting module, descending multicast packets processing module, up multicast packets letter sorting module, up multicast packets processing module, the Router emulation module, the Host emulation module, multicast agent control module and multicast data communication control module, wherein, described descending multicast packets letter sorting module is connected to described descending multicast packets processing module, described descending multicast packets processing module is connected to described multicast agent control module, described Router emulation module and described multicast data communication control module, described multicast agent control module is connected to described Router emulation module, described Host emulation module, described multicast data communication control module and described up multicast packets processing module, described Host emulation module is connected to described up multicast packets processing module, described multicast data communication control module is connected to described up multicast packets processing module, and described up multicast packets processing module is connected to described up multicast packets letter sorting module.
11. a method that is used for multicast comprises the steps:
(1) multicast source (300) sends request to create a new multicast group to multicast source controlling equipment (500);
(2) request to create in multicast source controlling equipment (500) receiving group source (300) is collected the authentication information of this multicast source (300), and initiates an authentication request of creating multicast group to multicast source administration module (7003);
(3) multicast source administration module (7003) is verified processing to authentication request, and to multicast source controlling equipment (500) return authentication result: if authentication failed, then return authentication failed message and failure cause; If be proved to be successful, then return and be proved to be successful message;
(4) after multicast source (300) authentication success, this multicast source (300) is published, so that multicast user (100) selects and adds;
(5) multicast user (100) selects a multicast source of having issued (300), and wherein multicast user (100) joins request to one of multicast user's control appliance (400) transmission;
(6) joining request of multicast user's control appliance (400) receiving group user (100) collected the authentication information of this multicast user (100), and initiates authentication request to multicast user's administration module (7001);
(7) multicast user's administration module (7001) is received the authentication request that multicast user's control appliance (400) is initiated, authentication information in the request is verified, and return the checking result: if authentication failed is then returned authentication failed message and failure cause to multicast user's control appliance (400); If be proved to be successful, then return and be proved to be successful message;
(8) multicast user's control appliance (400) carries out the multicast message exchange with the multicast trunking (600) of upstream, upgrades corresponding multicast information; And
(9) described multicast user (100) receives the multicast packet of corresponding multicast source (300).
12. according to the method for claim 11, wherein step (3) also comprises step,
The authorization information of the relevant multicast source (300) of multicast source administration module (7003) record comprises parameters for authentication, authenticated time, authentication result, to be used for charging and inquiry use.
13. according to the method for claim 11, wherein step (7) also comprises step,
Multicast user's administration module (7001) record multicast user's (100) relevant authorization information comprises parameters for authentication, authenticated time, authentication result, to be used for charging and inquiry.
14., wherein also comprise step according to the method for claim 11:
Multicast source (300) sends a leave group message to multicast source controlling equipment (500), to leave this group;
The time departure of multicast source administration module (7003) record multicast source (300) is to be used for charging and inquiry.
15. the method according to claim 11 wherein also comprises:
Multicast user (100) initiatively sends leave group message to multicast user's control appliance (400), to leave this group;
Multicast user's administration module (7001) record multicast user's (100) time departure is to be used for charging and inquiry.
16., wherein also comprise step according to the method for claim 11:
Multicast user's control appliance (400) is kept the multicast state of this multicast user at this group, and first and second timers are set, and first timer is set to timing very first time section, and second timer is set to second time period of timing, wherein
After the licensed adding of multicast user (100),, regularly send one and keep message to multicast user's control appliance (400) according to certain cycle;
After multicast user's control appliance (400) received this message, the first timer of this group of then resetting was a very first time section, restarts timing;
If before very first time section expiration, also do not receive the message of keeping that this multicast user (100) sends at this group, then initiate one to the query messages of this multicast user (100) at this group, it was second time period that second timer is set simultaneously, picked up counting; If a query messages is then retransmitted in no response before second time period expiration, and to reset second timer be described second time period; If the multicast project is then deleted in continuous three no responses; Send " this user leaves this group " message to multicast user's administration module (7001) simultaneously;
Multicast user's administration module (7001) writes down the time departure of this multicast user (100), to be used for charging and inquiry.
17. according to the method for claim 11, wherein between multicast user (100) and the multicast user's control appliance (400), between multicast source (300) and the multicast source controlling equipment (500), between multicast source controlling equipment (500) and the multicast trunking (600) and all use IGMP v1 or IGMP v2 agreement to carry out alternately between multicast user's control appliance (400) and the multicast trunking (600).
18. according to the method for claim 11, wherein between multicast user's control appliance (400) and the multicast user's administration module (7001), adopt the Radius agreement of expansion to carry out alternately between multicast source controlling equipment (500) and the multicast source administration module (7003).
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| CN105657671B (en) * | 2014-11-14 | 2019-08-23 | 电信科学技术研究院 | A kind of method and apparatus for realizing multicast |
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