CN101374069B - Method, system and equipment for transforming multicast packet - Google Patents
Method, system and equipment for transforming multicast packet Download PDFInfo
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- CN101374069B CN101374069B CN2007101470574A CN200710147057A CN101374069B CN 101374069 B CN101374069 B CN 101374069B CN 2007101470574 A CN2007101470574 A CN 2007101470574A CN 200710147057 A CN200710147057 A CN 200710147057A CN 101374069 B CN101374069 B CN 101374069B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1836—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with heterogeneous network architecture
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/185—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
Abstract
The invention provides a method, a system and a device for conversion of a multicast message. When a source network device and a target network device support the multicast with different modes, the method comprises the following steps: receiving a source multicast message of the mode supported by the source network device, generating a target multicast message of the mode supported by the target network device according to the multicast address contained in the source multicast message, and transmitting the target multicast message to the target network device. During the process of transmitting the multicast message from the source network device to the target network device, the conversion of the multicast message is completed, and the mode of the converted multicast message is compatible to the target network device, thereby solving the compatibility problem of the multicast message transmission between the networks of different modes under the condition of coexistence of the networks of different modes.
Description
Technical field
The present invention relates to multicasting technology, particularly a kind of conversion method of multicast message, system and equipment.
Background technology
Source specific multicast (SSM, Source Specific Multicast) is a kind of new multicast service pattern that is different from traditional Any-Source Multicast (ASM, Any Source Multicast).ASM only uses multicast address to identify a multicast conversation, and SSM uses multicast address and multicast source address to identify a multicast conversation simultaneously, the multicast message that is ASM only comprises multicast address, and the multicast message of SSM comprises multicast address and multicast source address simultaneously.
The terminal of ASM only decides according to multicast address and adds certain multicast, and receives the multicast packet that sends this multicast address from any one multicast source.Owing to comprised multicast source address in the multicast message of SSM, therefore, in SSM, can realize the Source-Filtered Multicast function.The multicast address that terminal among the SSM comprises by multicast message is announced this terminal and is wished the multicast group that adds, this terminal of the announcement of multicast source address by comprising in multicast message tabulation is simultaneously wished the multicast source address that receives, or announce this terminal by the multicast source address Exclude Lists that comprises in the multicast message and do not wish the multicast source address that receives, thereby realize the Source-Filtered Multicast function.
According to the difference of IP version, SSM and ASM use the multicast management protocol of different editions respectively.Supporting the 4th edition (IPv4 of Internet protocol, Internet Protocol Vertion 4) in the network, the multicast management protocol of using is Internet Group Management Protocol (IGMP, Internet Group ManagementProtocol), wherein, in the ASM territory of supporting IPv4, the multicast management protocol of using is Internet Group Management Protocol front page (IGMPv1, Internet Group Management Protocol Version1) or Internet Group Management Protocol second edition (IGMPv2, Internet Group Management ProtocolVersion 2), in the SSM territory of supporting IPv4, use the Internet Group Management Protocol third edition (IGMPv3, Internet Group Management Protocol Version 3).Supporting Internet protocol sixth version (IPv6, Internet Protocol Vertion 6) in the network, the multicast management protocol of using is multicast monitoring person agreement (MLD, Multicast Listener Discovery), wherein, in the ASM territory of supporting IPv6, the multicast management protocol of using is multicast monitoring person agreement front page (MLDv1, Multicast Listener Discovery Version 1), in the SSM territory of supporting IPv6, the multicast management protocol of using is multicast monitoring person agreement second edition (MLDv2, MulticastListener Discovery Version 2).In the present invention, will support the network of ASM to be called the ASM territory, will support the network of SSM to be called the SSM territory, will support the network of IPv4 to be called the IPv4 territory, will support the network of IPv6 to be called the IPv6 territory.
Owing to be in the stage of network upgrade at present, so, the network coexisted situation that different mode in following a period of time, will occur, the network coexisted situation that may have following several different modes: Fig. 1 a is a kind of application scenarios that mixes of ASM and SSM in the prior art, Access Network is the Access Network after upgrading among Fig. 1 a, support SSM, and terminal network still is the legacy terminal network, supports ASM; Fig. 1 c is a kind of mixing application scenarios of IPv4 and IPv6 in the prior art, and Access Network is supported IPv4 among Fig. 1 c, and terminal network is supported IPv6; Fig. 1 d is the another kind mixing application scenarios of IPv4 and IPv6 in the prior art, and Access Network is supported IPv6 among Fig. 1 d, and terminal network is supported IPv4.Under the network coexisted situation such as above-mentioned several different modes, when communicating between the network of support different mode, pattern and the incompatible problem of another network from the multicast message of a network will inevitably appear, yet, in the prior art, the conversion method that does not have a kind of multicast message can solve under above several different mode networks coexistence situation, transmits the compatibling problem of multicast message between different mode networks.
Summary of the invention
The embodiment of the invention provides a kind of conversion method, system and equipment of multicast message, so that solve under the different mode networks coexistence situation, transmits the compatibling problem of multicast message between different mode networks.
A kind of conversion method of multicast message, this method comprises:
When source network device and the purpose network equipment are supported the multicast of different mode, the source multicast message of reception sources network equipment institute support mode, the multicast address that comprises according to described source multicast message, generate the purpose multicast message of purpose network equipment institute support mode, and the purpose multicast message of described generation is sent to the purpose network equipment;
Wherein, described source network device supporting source specific multicast SSM, the described purpose network equipment is supported Any-Source Multicast ASM, and described source network device is supported the multicast of identical Internet protocol IP version or different IP version; Perhaps,
Described source network device is supported ASM, and the described purpose network equipment is supported SSM, and described source network device is supported the multicast of different IP version; Perhaps,
The described source network device and the purpose network equipment are supported SSM or ASM simultaneously, and the multicast of described source network device and purpose network equipment support different IP version.
A kind of converting system of multicast message, this system comprises:
Source network device is used to send the source multicast message of self institute's support mode;
The multicast message conversion equipment, be used to receive the source multicast message that described source network device sends, according to the multicast address that described source multicast message comprises, generate the purpose multicast message of purpose network equipment institute support mode, and the purpose multicast message that generates is sent to the purpose network equipment;
The purpose network equipment is used to receive the purpose multicast message that described multicast message conversion equipment sends;
Wherein, described source network device supporting source specific multicast SSM, the described purpose network equipment is supported Any-Source Multicast ASM, and described source network device is supported the multicast of identical Internet protocol IP version or different IP version; Perhaps,
Described source network device is supported ASM, and the described purpose network equipment is supported SSM, and described source network device is supported the multicast of different IP version; Perhaps,
The described source network device and the purpose network equipment are supported SSM or ASM simultaneously, and the multicast of described source network device and purpose network equipment support different IP version.
A kind of multicast message conversion equipment, this equipment comprises:
The message receiving element is used for the source multicast message that the reception sources network equipment sends;
Address acquisition unit is used to obtain the multicast address of the source multicast message that described message receiving element receives, and the multicast address of this source multicast message is provided;
Purpose multicast message generation unit, the multicast address that is used for providing according to described address acquisition unit generates the purpose multicast message;
Packet sending unit is used to send the purpose multicast message that described purpose multicast message generation unit generates;
Wherein, described source network device supporting source specific multicast SSM, the described purpose network equipment is supported Any-Source Multicast ASM, and described source network device is supported the multicast of identical Internet protocol IP version or different IP version; Perhaps,
Described source network device is supported ASM, and the described purpose network equipment is supported SSM, and described source network device is supported the multicast of different IP version; Perhaps,
The described source network device and the purpose network equipment are supported SSM or ASM simultaneously, and the multicast of described source network device and purpose network equipment support different IP version.
As can be seen from the above technical solutions, at the source multicast message of the embodiment of the invention by reception sources network equipment support mode, the multicast address that comprises according to the source multicast message, source messages is converted into the purpose multicast message of purpose network equipment institute support mode, make when the multicast of source network and purpose network support different mode, be sent in the purpose network equipment process at multicast message from source network device, can realize the conversion of multicast message, make the multicast message after the conversion pattern can with the purpose Web-compatible, thereby solved under the different mode networks coexistence situation, transmitted the compatibling problem of multicast message between different mode networks.
Description of drawings
Fig. 1 a is a kind of application scenarios that mixes of ASM and SSM in the prior art;
Fig. 1 b is the another kind mixing application scenarios of ASM and SSM in the prior art;
Fig. 1 c is a kind of application scenarios that mixes of IPv4 and IPv6 in the prior art;
Fig. 1 d is the another kind mixing application scenarios of IPv4 and IPv6 in the prior art;
Method flow diagram under first kind of situation that Fig. 2 provides for the embodiment of the invention;
The method flow diagram of second kind of situation that Fig. 3 provides for the embodiment of the invention;
The method flow diagram of the third situation that Fig. 4 provides for the embodiment of the invention;
The method flow diagram of the 4th kind of situation that Fig. 5 provides for the embodiment of the invention;
The method flow diagram of the 5th kind of situation that Fig. 6 provides for the embodiment of the invention;
The method flow diagram of the 6th kind of situation that Fig. 7 provides for the embodiment of the invention;
The converting system structure chart of the multicast message that Fig. 8 provides for the embodiment of the invention;
The composition structure chart of the multicast message conversion equipment that Fig. 9 provides for the embodiment of the invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention more clear, describe the present invention below in conjunction with the drawings and specific embodiments.
The method that the embodiment of the invention provides comprises: the source multicast message of reception sources network equipment support mode according to the multicast address that the source multicast message comprises, is converted into source messages the purpose multicast message of purpose network equipment institute support mode; Wherein, the source network device and the purpose network equipment are supported the multicast of different mode.
This method can set in advance the multicast message conversion equipment, by the step in this multicast message conversion equipment execution said method.Below this method is divided into following several situation, each is described in detail for an embodiment:
Method flow diagram under first kind of situation that Fig. 2 provides for the embodiment of the invention, among this embodiment, source network device is supported SSM, the purpose network equipment is supported ASM, and source network device is supported identical IP version with the purpose network equipment, and at this moment, the multicast message that sends with source network device is that the IGMPv3 message is that example describes, as shown in Figure 2, this method can may further comprise the steps:
Step 201: the IGMPv3 message that the multicast message conversion equipment reception sources network equipment sends.
Step 202: the multicast message conversion equipment obtains the multicast source address that this IGMPv3 message comprises, and provides equipment to send the request of obtaining this multicast source address authority to the multicast source authority.
It can be the server of preserving multicast source authority information that operator is provided with that this multicast source authority provides equipment.
Step 203: the multicast source authority provides equipment that the authority information of this multicast source address is provided to the multicast message conversion equipment.
Step 204: the multicast message conversion equipment judges according to the authority information of the multicast source address that obtains whether this multicast source address has accessed authority, if having, then execution in step 206; If no, execution in step 205 then.
Step 205: abandon this IGMPv3 message, process ends.
Above-mentioned steps 202 to step 205 is to be used for the IGMPv3 message that receives is carried out multicast source authority performed step of when check, the method that this multicast source authority detects can make operator provide the multicast source of illegal business to control to some, makes source network device can't get access to the illegal business that these multicast sources provide.
When not needing that multicast source is carried out authority when check, also not execution in step 202 to step 205.
Step 206: the multicast address that the multicast message conversion equipment utilizes the IGMPv3 message to comprise, generate IGMPv1 or IGMPv2 message, send to the purpose network equipment.
Generation IGMPv1 or IGMPv2 message are the multicast address that utilizes the IGMPv3 message to comprise in this step, and the IGMPv3 message is carried out format conversion, generate IGMPv1 or IGMPv2 message.
In above-mentioned flow process shown in Figure 2, the multicast source authority provides equipment also can in advance the mode of multicast source address authority information with tabulation be configured in the multicast message conversion equipment, at this moment, do not provide equipment to send request and step 203 to multicast source address in the execution in step 202, the multicast address conversion equipment is according to the multicast source address permissions list of the multicast source address query configuration that comprises in the multicast message that receives at self, obtain this multicast source address authority information, continue execution in step 204 then.
Above-mentioned steps is to be the description that example is carried out with the IPv4 version, if the source network device and the purpose network equipment are all supported IPv6, the multicast message conversion equipment also can utilize the described flow process of Fig. 2 that the MLDv2 message that receives is converted to the MLDv1 message.
The method flow diagram of second kind of situation that Fig. 3 provides for the embodiment of the invention, among this embodiment, source network device is supported SSM, the purpose network equipment is supported ASM, and source network device is supported different IP versions with the purpose network equipment, supports IPv4 with source network device below, and the purpose network equipment supports that IPv6 is that example describes, as shown in Figure 3, this method can may further comprise the steps:
Step 301: the IGMPv3 message that the multicast message conversion equipment reception sources network equipment sends.
Step 302: the multicast message conversion equipment obtains multicast address and the multicast source address that this IGMPv3 message comprises, and from the IPv4 and IPv6 address mapping table that are provided with, inquires about multicast address and the multicast source address of corresponding IPv6.
Can set in advance IPv4 and IPv6 address mapping table in this step, comprise the mapping relations of address between IPv4 and the IPv6 in this IPv4 and the IPv6 address mapping table.
Step 303: the multicast message conversion equipment provides equipment to send the request of obtaining this multicast source address authority to the multicast source authority.
Step 304: multicast source address provides equipment that the authority information of this multicast source address is provided to the multicast message conversion equipment.
Step 305: the multicast message conversion equipment judges according to the authority information of the multicast source address that obtains whether this multicast source address has accessed authority, if having, then execution in step 307; If no, execution in step 306 then.
Step 306: abandon this IGMPv3 message, process ends.
When not needing that multicast source is carried out authority when check, also not execution in step 304 to step 306.
Step 307: the multicast address of the IPv6 that IPv4 and IPv6 address mapping table obtain is looked in the utilization of multicast message conversion equipment, generates the MLDv1 message, sends to the purpose network equipment.
In this step, the multicast address of the IPv6 that utilizing tables look-up obtains carries out format conversion with the IGMPv3 message, generates the MLDv1 message.
In above-mentioned flow process shown in Figure 3, the multicast source authority provides equipment also can in advance the mode of multicast source address authority information with tabulation be configured in the multicast message conversion equipment, at this moment, not execution in step 303 and step 304, the multicast address conversion equipment is according to the resulting multicast source address of query mappings table, query configuration obtains this multicast source address authority information at the multicast source address permissions list of self, continues execution in step 305 then.
Step in above-mentioned Fig. 3 flow process is that the purpose multicast message that is converted to the IPv6 version with the source multicast message with the IPv4 version is the description that example is carried out, if the source multicast message of IPv6 version is converted to the purpose multicast message of IPv4 version, the multicast message conversion equipment also can utilize flow process shown in Figure 3 that the MLDv2 message that receives is converted to IGMPv1 or IGMPv2 message.
The method flow diagram of the third situation that Fig. 4 provides for the embodiment of the invention, among this embodiment, source network device is supported ASM, the purpose network equipment is supported SSM, and source network device is supported different IP versions with the purpose network equipment, supports IPv4 with source network device below, and the purpose network equipment supports that IPv6 is that example describes, as shown in Figure 4, this method can may further comprise the steps:
Step 401: IGMPv1 or IGMPv2 message that the multicast message conversion equipment reception sources network equipment sends.
Step 402: the multicast message conversion equipment obtains the multicast address that this IGMPv1 or IGMPv2 message comprise, from the IPv4 and IPv6 address mapping table that are provided with, and the multicast address of the IPv6 that inquiry is corresponding.
Step 403: the multicast message conversion equipment provides equipment to send the request of obtaining multicast source address to multicast source address.
In this step, comprise the multicast address information that inquires in the step 402 in the request of transmission.
Step 404: multicast source address provides equipment to provide the multicast source address corresponding with the multicast address that inquires to the multicast message conversion equipment.
Step 405: the multicast address of the IPv6 that IPv4 and IPv6 address mapping table obtain and the multicast source address that gets access to are looked in the utilization of multicast message conversion equipment, generate the MLDv2 message, send to the purpose network equipment.
In this step, utilize the multicast address look into the IPv6 that IPv4 and IPv6 address mapping table obtain and the multicast source address that gets access to, IGMPv1 or IGMPv2 message are carried out format conversion, generate the MLDv2 message.
In above-mentioned flow process shown in Figure 4, multicast source address provides equipment also can in advance the mode of multicast source address information with tabulation be configured in the multicast message conversion equipment, at this moment, not execution in step 403 and step 404, the multicast address conversion equipment is according to looking into the resulting multicast address of mapping table, query configuration obtains the multicast source address corresponding with the multicast address that inquires in the multicast source address tabulation of self, continues execution in step 405 then.
Step in above-mentioned Fig. 4 flow process is that the purpose multicast message that is converted to the IPv6 version with the source multicast message with the IPv4 version is the description that example is carried out, if the source multicast message of IPv6 version is converted to the purpose multicast message of IPv4 version, the multicast message conversion equipment also can utilize flow process shown in Figure 4 that the MLDv2 message that receives is converted to IGMPv1 or IGMPv2 message.
The method flow diagram of the 4th kind of situation that Fig. 5 provides for the embodiment of the invention, among this embodiment, the source network device and the purpose network equipment are all supported ASM, but source network device is supported different IP versions with the purpose network equipment, support IPv4 with source network device below, the purpose network equipment supports that IPv6 is that example describes, and as shown in Figure 5, this method can may further comprise the steps:
Step 501: IGMPv1 or IGMPv2 message that the multicast message conversion equipment reception sources network equipment sends.
Step 502: the multicast message conversion equipment obtains the multicast address that this IGMPv1 or IGMPv2 message comprise.
Step 503: the multicast address of the IPv6 of the multicast message conversion equipment multicast address correspondence that inquiry is obtained from the IPv4 that is provided with and IPv6 address mapping table.
Step 504: the IPv6 multicast address of multicast message conversion equipment utilization inquiry generates the MLDv1 message, sends to the purpose network equipment.
In this step, utilize the multicast address of the IPv6 inquire, IGMPv1 or IGMPv2 message and MLDv1 message are carried out format conversion, generate the MLDv1 message.
Step in the above-mentioned flow process shown in Figure 5 is that the multicast message that the multicast message with IPv4 is converted to IPv6 is the explanation that example is carried out, if the multicast message of IPv6 is converted to the multicast message of IPv4, the multicast message conversion equipment also can utilize flow process shown in Figure 5 that the MLDv1 message that receives is converted to IGMPv1 or IGMPv2 message.
The method flow diagram of the 5th kind of situation that Fig. 6 provides for the embodiment of the invention, among this embodiment, the source network device and the purpose network equipment are all supported SSM, but source network device is supported different IP versions with the purpose network equipment, support IPv4 with source network device below, the purpose network equipment supports that IPv6 is that example describes, and as shown in Figure 6, this method can may further comprise the steps:
Step 601: the IGMPv3 message that the multicast message conversion equipment reception sources network equipment sends.
Step 602: the multicast message conversion equipment obtains multicast address and the multicast source address that this IGMPv3 message comprises.
Step 603: the multicast source address of the IPv6 of the multicast address of the IPv6 of the multicast message conversion equipment multicast address correspondence that inquiry is obtained from the IPv4 that is provided with and IPv6 address mapping table and the multicast source address correspondence of obtaining.
Step 604: multicast address and the multicast source address of the IPv6 of multicast message conversion equipment utilization inquiry generate the MLDv3 message and send to the purpose network equipment.
In this step, utilize multicast address and the multicast source address of the IPv6 that inquires, the IGMPv3 message is carried out format conversion, generate the MLDv3 message.
Step in the above-mentioned flow process shown in Figure 6 is that the multicast message that the multicast message with IPv4 is converted to IPv6 is the explanation that example is carried out, if the multicast message of IPv6 is converted to the multicast message of IPv4, the multicast message conversion equipment also can utilize flow process shown in Figure 6 that the MLDv2 message that receives is converted to the IGMPv3 message.
In the flow process of above-mentioned Fig. 3 to Fig. 6, described source network device all is multicast user's equipment, and the source multicast message of its transmission is multicast request message.It is the node that multicast packet is provided for multicast user's equipment that method of the present invention can also be used for source network device, and at this moment, the source multicast message of source network device transmitting terminal is a multicast data message, and this process as shown in Figure 7.The method flow diagram of the 6th kind of situation that Fig. 7 provides for the embodiment of the invention, be the IPv4 pattern with the multicast data message that receives among this embodiment, the multicast data message that need be converted to the IPv6 pattern of purpose network equipment support is an example, as shown in Figure 7, this method can may further comprise the steps:
Step 701: the multicast data message of the IPv4 pattern that the multicast message conversion equipment reception sources network equipment sends.
Step 702: the multicast message conversion equipment obtains the multicast address that the multicast data message that receives comprises.
Step 703: the multicast address of the IPv6 of the multicast message conversion equipment multicast address correspondence that inquiry is obtained from the IPv4 that is provided with and IPv6 address mapping table.
When described multicast data message comprises multicast source address, for example, multicast data message is Electronic Program Guide (EPG, Electronic Program Guide) during message, this step can further include: the multicast source address of the IPv6 of inquiry multicast source address correspondence from the IPv4 that is provided with and IPv6 address mapping table.
Step 704: the multicast address of multicast message conversion equipment utilization inquiry, the multicast data message of generation IPv6 pattern sends to the purpose network equipment.
In this step, utilize the multicast address of inquiry, the multicast data message of IPv4 pattern is carried out format conversion, generate the multicast data message of IPv6 pattern.
Step in the above-mentioned flow process shown in Figure 7 is that the multicast data message that the multicast data message with IPv4 is converted to IPv6 is the explanation that example is carried out, and also can utilize flow process shown in Figure 7 the multicast data message of IPv6 to be converted to the multicast data message of IPv4.
The system that the embodiment of the invention is provided is described in detail below.The converting system structure chart of the multicast message that Fig. 8 provides for the embodiment of the invention, as shown in Figure 8, this converting system mainly comprises: source network device 801, multicast message conversion equipment 802 and the purpose network equipment 803;
Multicast message conversion equipment 802, be used to receive the source multicast message that described source network device 801 sends, according to the multicast address that the source multicast message comprises, generate the purpose multicast message of purpose network equipment institute support mode, and the purpose multicast message that generates is sent to the purpose network equipment 803;
The purpose network equipment 803 is used for the purpose multicast message that receiving group message conversion equipment 802 sends.
This system can also comprise: the multicast source authority provides equipment 804, is used to provide the multicast source address authority information;
The multicast source address authority information that the receiving group source address provides equipment 804 to provide also is provided multicast message conversion equipment 802, and judges whether this multicast source address has accessed authority, if have, carry out the operation of described generation purpose multicast message,, then abandon the source multicast message if do not have.
Described source network device 801 also can be also can be multicast user's equipment for multicast user's equipment provides node, the purpose network equipment 803 of multicast packet, and the multicast message that transmit this moment is a multicast data message.
This system can also comprise: mapping table memory device 805 is used to store the mapping relations of multicast address under IPv4 and IPv6 pattern.
Multicast message conversion equipment 802 also is used for from the multicast address of another IP version of the multicast address correspondence of described mapping table memory device 805 query source multicast messages, and according to the multicast address of this inquiry, carries out the operation of described generation purpose multicast message.
This mapping table memory device 805 can be set to separate equipment, also can be arranged in the multicast message conversion equipment 802.
This system can also comprise: multicast source address provides equipment 806, is used to provide the multicast source address information of the multicast address correspondence of inquiry;
Multicast message conversion equipment 802 also is used for providing to multicast source address the multicast source address of the equipment multicast address correspondence that 806 requests inquire, and utilizes the multicast source address that obtains, and carries out the operation of described generation purpose multicast message.
Above-mentioned multicast source authority provides equipment 804 and multicast source address to provide equipment 806 also can be set to an equipment, and this equipment provides multicast source address information and multicast source authority information simultaneously.
Wherein, source network device is that multicast user's equipment, the purpose network equipment are when providing the node of multicast packet for multicast user's equipment, multicast message conversion equipment 802 can be groups of routers (RG, RoutingGroup), broadcast the source authority this moment provides equipment 804 or multicast source address to provide equipment 806 can be Automatic Configuration Server (ACS, Automatic Configuration Server), the source authority of broadcasting provides equipment 804 or multicast source address that the transmission of finishing multicast source address between equipment 806 and the multicast message conversion equipment 802 by the TR069 agreement is provided; Multicast message conversion equipment 802 also can be access node (AN, Access Node), for example, the base station, digital subscriber couple in multiplexer (DSLAM, DSL AccessMultiplexer) or light path destination node (OLT, Optical Line Termination), broadcast the source authority this moment provides equipment 804 or multicast source address to provide equipment 806 can be the IP edge device, wideband network gateway (BNG for example, Broadband Network Gateway) or Broadband Remote Access Server (BRAS, Broadband Remote Access Server), the source authority of broadcasting provides equipment 804 or multicast source address that the transmission of finishing multicast source address between equipment 806 and the multicast message conversion equipment 802 by layer two control protocol (L2CP, Layer Two Control Protocol) is provided; Multicast message conversion equipment 802 also can be optical network unit (ONU, Optical Network Unit) or Optical Network Terminal (ONT, Optical Network Terminal), broadcast the source authority this moment provides equipment 804 or multicast source address to provide equipment 806 can be OLT, the source authority of broadcasting provides equipment 804 or multicast source address that the transmission of finishing multicast source address between equipment 806 and the multicast message conversion equipment 802 by optical network unit management and control interface (OMCI, ONU Management and Control Interface) is provided.
The composition structure chart of the multicast message conversion equipment that Fig. 9 provides for the embodiment of the invention, as shown in Figure 9, this multicast message conversion equipment mainly comprises: message receiving element 901, address acquisition unit 902, purpose multicast message generation unit 903 and packet sending unit 904.
Message receiving element 901 is used for the source multicast message that the reception sources network equipment sends.
Address acquisition unit 902 is used to obtain the multicast address of the source multicast message that message receiving element 901 receives, and the multicast address of this source multicast message is provided.
Purpose multicast message generation unit 903, the multicast address that is used for providing according to address acquisition unit 902 generates the purpose multicast message.
Packet sending unit 904 is used to send the purpose multicast message that purpose multicast message generation unit generates.
This multicast message conversion equipment can also comprise: mapping table memory cell 905 is used for the mapping relations of address between storing IP v4 and the IPv6.
Address acquisition unit 902 comprises: multicast address acquiring unit 9021 and lookup unit 9022;
Multicast address acquiring unit 9021 is used to obtain the multicast address of the source multicast message that message receiving element 901 receives;
The multicast address of the purpose IP version that the network equipment is supported of the multicast address correspondence that gets access to from described mapping table memory cell 905 inquiry multicast address acquiring units and the multicast address that provides this to inquire are provided lookup unit 9022.
This multicast message conversion equipment can also comprise: multicast source authority acquiring unit 906 and authority judging unit 907;
Multicast source authority acquiring unit 906 is used for obtaining according to the multicast source address that address acquisition unit 902 is obtained the authority information of this multicast source address.
Authority judging unit 907, be used for the multicast source address authority information that obtains according to multicast source authority acquiring unit 906, judge whether this multicast source address has accessed authority,, then trigger the operation that purpose multicast message generation unit is carried out described generation purpose multicast message if having; If no, forbid that then purpose multicast message generation unit carries out the operation of described generation purpose multicast message.
Address acquisition unit 902 also is used to obtain the multicast source address of the source multicast message that message receiving element 901 receives.
This multicast message conversion equipment can also comprise: multicast source address acquiring unit 908, be used for the multicast address that inquires according to lookup unit 9022, obtain the multicast source address corresponding, and this multicast source address is offered purpose message generation unit 903 with this multicast address that inquires.
Purpose message generation unit 903 also is used to receive the multicast source address that described multicast source address acquiring unit 908 provides, and utilizes this multicast source address, carries out the operation of described generation purpose multicast message.
By above description as can be seen, at the source multicast message of the embodiment of the invention by reception sources network equipment support mode, the multicast address that comprises according to the source multicast message, source messages is converted into the purpose multicast message of purpose network equipment institute support mode, make when the multicast of source network and purpose network support different mode, be sent in the purpose network equipment process at multicast message from source network device, can realize the conversion of multicast message, make the multicast message after the conversion pattern can with the purpose Web-compatible, thereby solved under the different mode networks coexistence situation, transmitted the compatibling problem of multicast message between different mode networks.
The embodiment of the invention has specifically provided the conversion of multicast message from the SSM pattern to the ASM pattern, conversion from the ASM pattern to SSM pattern different IP version, the conversion of different IP version in the ASM pattern, and the method for the conversion of different IP version in the SSM pattern, wherein, specifically comprised multicast source authority deterministic process, the method for transformation of different IP version multicast address and multicast source address, thereby solved under concrete different mode embodies, the compatibling problem that may occur, and this method only need can realize multicast message transmission between the different mode networks by the multicast message conversion equipment is set, do not need existing network is comprehensively transformed, for example, do not need the Access Network of supporting ASM or IPv4 is upgraded, saved the cost of operator; Do not need multicast user's equipment of supporting ASM or IPv4 is upgraded, protected the investment of user's existing device.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (17)
1. the conversion method of a multicast message is characterized in that, this method comprises:
When source network device and the purpose network equipment are supported the multicast of different mode, the source multicast message of reception sources network equipment institute support mode, the multicast address that comprises according to described source multicast message, generate the purpose multicast message of purpose network equipment institute support mode, and the purpose multicast message of described generation is sent to the purpose network equipment;
Wherein, described source network device supporting source specific multicast SSM, the described purpose network equipment is supported Any-Source Multicast ASM, and described source network device is supported the multicast of identical Internet protocol IP version or different IP version; Perhaps,
Described source network device is supported ASM, and the described purpose network equipment is supported SSM, and described source network device is supported the multicast of different IP version; Perhaps,
The described source network device and the purpose network equipment are supported SSM or ASM simultaneously, and the multicast of described source network device and purpose network equipment support different IP version.
2. conversion method according to claim 1, it is characterized in that, when source network device is supported SSM, when the purpose network equipment is supported ASM, at the multicast address that comprises according to described source multicast message, also comprise before generating the purpose multicast message of purpose network equipment institute support mode: the multicast source address that comprises according to described source multicast message, obtain the authority information of described multicast source address, and judge according to the authority information of described multicast source address whether described multicast source address has accessed authority, if have, continue to carry out the multicast address that comprises according to described source multicast message, generate the step of the purpose multicast message of purpose network equipment institute support mode; If no, abandon described source multicast message.
3. conversion method according to claim 2, it is characterized in that, at the multicast source address that comprises according to described source multicast message, the authority information that obtains described multicast source address also comprises before: when described source network device and purpose network equipment support different IP version, from the different IP version address mapping table that sets in advance, the multicast source address of the IP version that destination device is supported of the multicast source address correspondence that the query source multicast message comprises;
The multicast source address that comprises according to described source multicast message, the authority information that obtains described multicast source address comprises: according to the multicast source address multicast source address correspondence, IP version that described destination device is supported that the source multicast message that inquires comprises, obtain the authority information of the described multicast source address that inquires.
4. conversion method according to claim 2 is characterized in that, described source multicast message is: IGMPv3 message or MLDv2 message;
Described purpose multicast message is: IGMPv1 message, IGMPv2 message or MLDv1 message.
5. conversion method according to claim 1, it is characterized in that, at the multicast address that comprises according to described source multicast message, the purpose multicast message that generates purpose network equipment institute support mode also comprises before: when described source network device and purpose network equipment support different IP version, from the different IP version address mapping table that sets in advance, the multicast address of the IP version that destination device is supported of the multicast address correspondence that the query source multicast message comprises;
The multicast address that comprises according to described source multicast message, the purpose multicast message that generates purpose network equipment institute support mode comprises: the multicast address multicast address correspondence, IP version that described destination device is supported that utilizes the described source multicast message that inquires to comprise, the source multicast message is carried out format conversion, generate described purpose multicast message.
6. conversion method according to claim 5, it is characterized in that, when described source network device and the purpose network equipment are all supported SSM, this method also comprises: from the different IP version address mapping table that sets in advance, and the multicast source address of the IP version that destination device is supported of the multicast source address correspondence that the query source multicast message comprises;
The multicast address that comprises according to described source multicast message, the purpose multicast message that generates purpose network equipment institute support mode comprises: the multicast address multicast address correspondence, IP version that described destination device is supported that utilizes the described source multicast message that inquires to comprise, the multicast source address multicast source address correspondence, IP version that described destination device is supported with the described source multicast message that inquires comprises generates the purpose multicast message.
7. conversion method according to claim 5, it is characterized in that, when described source network device is supported ASM, when the described purpose network equipment was supported SSM, this method also comprised: provide equipment to obtain the multicast source address of the described multicast address correspondence that inquires according to the multicast address that inquires from multicast source address;
The multicast address that comprises according to described source multicast message, the purpose multicast message that generates purpose network equipment institute support mode comprises: utilize multicast source address that obtains and the multicast address that inquires, described source multicast message is carried out format conversion, generate described purpose multicast message.
8. conversion method according to claim 5 is characterized in that, described source multicast message and purpose multicast message are the multicast data message of different IP version; Perhaps,
When described source network device and the purpose network equipment were all supported ASM, described source multicast message was IGMPv1 message or IGMPv2 message, and described purpose multicast message is the MLDv1 message; Perhaps, described source multicast message is the MLDv1 message, and described purpose multicast message is IGMPv1 message or IGMPv2 message;
When described source network device and the purpose network equipment were all supported SSM, described source multicast message was the IGMPv3 message, and described purpose multicast message is the MLDv2 message; Perhaps, described source multicast message is the MLDv2 message, and described purpose multicast message is the IGMPv3 message;
Support ASM when described source network device, when the described purpose network equipment was supported SSM, described source multicast message was IGMPv1 message or IGMPv2 message, and described purpose multicast message is the MLDv2 message; Perhaps, described source multicast message is the MLDv2 message, and described purpose multicast message is IGMPv1 message or IGMPv2 message.
9. the converting system of a multicast message is characterized in that, this system comprises:
Source network device is used to send the source multicast message of self institute's support mode;
The multicast message conversion equipment, be used to receive the source multicast message that described source network device sends, according to the multicast address that described source multicast message comprises, generate the purpose multicast message of purpose network equipment institute support mode, and the purpose multicast message that generates is sent to the purpose network equipment;
The purpose network equipment is used to receive the purpose multicast message that described multicast message conversion equipment sends;
Wherein, described source network device supporting source specific multicast SSM, the described purpose network equipment is supported Any-Source Multicast ASM, and described source network device is supported the multicast of identical Internet protocol IP version or different IP version; Perhaps,
Described source network device is supported ASM, and the described purpose network equipment is supported SSM, and described source network device is supported the multicast of different IP version; Perhaps,
The described source network device and the purpose network equipment are supported SSM or ASM simultaneously, and the multicast of described source network device and purpose network equipment support different IP version.
10. converting system according to claim 9 is characterized in that, this system also comprises: the multicast source authority provides equipment, is used to provide the multicast source address authority information;
Described multicast message conversion equipment, also be used to receive the multicast source address authority information that described multicast source authority provides equipment to provide, and judge whether described multicast source address has accessed authority, if have, carry out the operation of described generation purpose multicast message, if no, then abandon the source multicast message.
11. converting system according to claim 9 is characterized in that, this system also comprises: the mapping table memory device is used to store the mapping relations under the multicast address different IP version pattern;
Described multicast message conversion equipment also is used for from the multicast address of another IP version of the multicast address correspondence of described mapping table memory device query source multicast message, and according to the multicast address of this inquiry, carries out the operation of described generation purpose multicast message.
12. converting system according to claim 11 is characterized in that, this system also comprises: multicast source address provides equipment, is used to provide the multicast source address information of the multicast address correspondence of inquiry;
Described multicast message conversion equipment also is used for providing to described multicast source address the multicast source address of the multicast address correspondence that device request inquires, and utilizes the multicast source address that obtains, and carries out the operation of described generation purpose multicast message.
13. converting system according to claim 9 is characterized in that, described source network device is multicast user's equipment, and the purpose network equipment is the node that multicast packet is provided for multicast user's equipment; Perhaps, described source network device is the node that multicast packet is provided for multicast user's equipment, and the purpose network equipment is multicast user's equipment.
14. a multicast message conversion equipment is characterized in that, this equipment comprises:
The message receiving element is used for the source multicast message that the reception sources network equipment sends;
Address acquisition unit is used to obtain the multicast address of the source multicast message that described message receiving element receives, and the multicast address of this source multicast message is provided;
Purpose multicast message generation unit, the multicast address that is used for providing according to described address acquisition unit generates the purpose multicast message;
Packet sending unit is used to send the purpose multicast message that described purpose multicast message generation unit generates;
Wherein, described source network device supporting source specific multicast SSM, the described purpose network equipment is supported Any-Source Multicast ASM, and described source network device is supported the multicast of identical Internet protocol IP version or different IP version; Perhaps,
Described source network device is supported ASM, and the described purpose network equipment is supported SSM, and described source network device is supported the multicast of different IP version; Perhaps,
The described source network device and the purpose network equipment are supported SSM or ASM simultaneously, and the multicast of described source network device and purpose network equipment support different IP version.
15. equipment according to claim 14 is characterized in that, this equipment also comprises: the mapping table memory cell is used to store the mapping relations of multicast address under different IP version pattern;
Described address acquisition unit comprises:
The multicast address acquiring unit is used to obtain the multicast address of the source multicast message that described message receiving element receives;
The multicast address of the purpose IP version that the network equipment is supported of the multicast address correspondence that gets access to from the described multicast address acquiring unit of described mapping table memory cell inquiry and the multicast address that provides this to inquire are provided lookup unit.
16. equipment according to claim 14 is characterized in that, described address acquisition unit also is used to obtain the multicast source address of the source multicast message that described message receiving element receives;
This equipment also comprises:
Multicast source authority acquiring unit is used for obtaining according to the multicast source address that described address acquisition unit is obtained the authority information of this multicast source address;
The authority judging unit, be used for the multicast source address authority information that obtains according to described multicast source authority acquiring unit, judge whether described multicast source address has accessed authority,, then trigger the operation that described purpose multicast message generation unit is carried out described generation purpose multicast message if having; If no, forbid that then described purpose multicast message generation unit carries out the operation of described generation purpose multicast message.
17. equipment according to claim 15, it is characterized in that, this equipment also comprises: the multicast source address acquiring unit, be used for the multicast address that inquires according to described lookup unit, obtain and the corresponding multicast source address of the described multicast address that inquires, and described multicast source address is offered described purpose message generation unit;
Described purpose message generation unit also is used to receive the multicast source address that described multicast source address acquiring unit provides, and utilizes this multicast source address, carries out the operation of described generation purpose multicast message.
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| CN2007101470574A CN101374069B (en) | 2007-08-25 | 2007-08-25 | Method, system and equipment for transforming multicast packet |
| PCT/CN2008/072138 WO2009026852A1 (en) | 2007-08-25 | 2008-08-25 | Method, system and device for switching multicast message |
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| CN101827011B (en) * | 2009-03-04 | 2013-03-27 | 华为技术有限公司 | Method, system and device of host machine communication |
| CN102468966B (en) * | 2010-11-19 | 2014-12-31 | 中兴通讯股份有限公司 | Multicast message control method and device |
| CN102263649B (en) * | 2011-08-26 | 2014-01-29 | 清华大学 | Controlled multicast system based on multicast conversion |
| CN103095585B (en) * | 2011-11-02 | 2018-08-07 | 中兴通讯股份有限公司 | The method and system of multicast control stream information intercommunication between a kind of IPv4 and IPv6 |
| CN103167046B (en) * | 2011-12-09 | 2017-04-12 | 华为技术有限公司 | Method, device and system for acquiring multicast address |
| CN103166929B (en) * | 2011-12-15 | 2016-06-08 | 华为技术有限公司 | media playing method and device |
| CN103514121B (en) * | 2012-06-29 | 2016-05-25 | 中国船舶重工集团公司第七0九研究所 | A kind of network card redundancy switching method under WindowsXp operating system |
| CN103795636B (en) | 2012-11-02 | 2017-04-12 | 华为技术有限公司 | Multicast processing method, device and system |
| CN103095473B (en) * | 2013-01-25 | 2016-03-02 | 福建星网锐捷网络有限公司 | The source-specific multicast method of crossing virtual private networks network, device and the network equipment |
| CN103796078A (en) * | 2014-01-23 | 2014-05-14 | 深圳创维－Rgb电子有限公司 | Multicast video playing method and video playing terminal |
| CN114448849B (en) * | 2021-12-17 | 2023-12-05 | 北京邮电大学 | Method for detecting supporting mode of IPv6 network of website and electronic equipment |
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