CN101001193B - Group broadcast desposition method between IPv6 islet and its equipment - Google Patents
Group broadcast desposition method between IPv6 islet and its equipment Download PDFInfo
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- CN101001193B CN101001193B CN200610032915.6A CN200610032915A CN101001193B CN 101001193 B CN101001193 B CN 101001193B CN 200610032915 A CN200610032915 A CN 200610032915A CN 101001193 B CN101001193 B CN 101001193B
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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
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/251—Translation of Internet protocol [IP] addresses between different IP versions
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- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/256—NAT traversal
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- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/2592—Translation of Internet protocol [IP] addresses using tunnelling or encapsulation
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- H—ELECTRICITY
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Abstract
This invention discloses a multicast disposing method among IPv6 isolated islands and ISP internet border devices for realizing it, in which, multicast parameters are transmitted in IPv4 and negotiated, and a multicast service tunnel is set up in the IPv4 based on the negotiation result to realize multicast communication in the IPv4 network. This invention also provides an ISP internet border device including a multicast parameter setting module, a transfer module, a negotiation module, a multicast service tunnel set-up module and a multicast neighbour relation module, in which, the new IPv6 device can be connected to the current IPv4 network at any time without updating the current IPv4 core network.
Description
Technical field
The present invention relates to network communications technology field, particularly a kind of method and equipment thereof that connects isolated IPv6 site deployment IPv6 multicast by the IPv4 network.
Background technology
Internet has become indispensable important process, communication means in people's life at present.Widely used IPv4 agreement among the present Internet, the IP agreement that just it has often been said.The IPv4 consensus standard was formulated the seventies in 20th century, and by nearly 30 years continuous evolution and development, the IP technology changed to the integrated network that can transmit data, voice, video multimedia from transmitting data originally merely.Along with application and development and development of technology, next generation network technology progressively appears in the middle of people's the visual field.Next generation network need provide reliable service quality to guarantee, and the service ability of multiple integrated services such as support voice, data, multimedia, and IPv4 becomes unable to do what one wishes gradually in the face of these new challenges.
IPv6 is the new network layer protocol that comes from the IPv4 development, is becoming the core standard of Next Generation Internet.Through years development, the IPv6 basic standard is increasingly mature, and the equipment of various dissimilar IPv6 is progressively come into commercial the application, and the telecom operation commercial city of many countries (comprising China) has been set up the IPv6 network and begun to provide service.
Multicast (Multicast) is the efficient data transfer mode of a kind of point to multiple spot, extensive use in existing IPv4.The general unicast technique difference of Shi Yonging, by setting up multicast tree, the cast communication mode can efficiently realize the data forwarding of one-to-many, reduces duplicating of data content, reduces the consumption of multi-party communication to Internet resources significantly.Referring to Fig. 1, adopting unicast communication, when realizing one-to-many communication, sender 11 just is copied into many parts to message from beginning, and all intermediate router R will transmit a message separately to each recipient 12,13,14.Referring to Fig. 2, multicast is by multicast tree, just just carries out message at the bifurcation of necessity and duplicates, and improved forward efficiency greatly.Wherein, multicast tree is exactly a forward-path to many optimization that makes up by multicast protocol.
Along with the network application that video, teleconference, amusement etc. are new is universal day by day, multicast has become a kind of important communication mode gradually.The multicasting technology of IPv6 is comparative maturity also, also faces huge application demand.Multicast is identical with multicast notion among the IPv4 among the IPv6, equally by multicast tree as the forwarding of data path, different is adopts the IPv6 agreement to realize, what difficulty disposes multicast at present in simple IPv6 network has not had.
Because in the existing communication network, the IPv4 technology that most existing networks all adopt wishes that at short notice with systems all in Internet and each enterprise network be extremely high from the cost that IPv4 is upgraded to IPv6 all, also is unpractical.IPv6 and IPv4 are inevitable reality in the medium-term and long-term coexistence of Internet.Therefore, realize that from IPv4 be a basic premise that imports the IPv6 technology to the IPv6 smooth transition.There have been many IPv4-IPv6 transitional technologies to occur now and obtained and used, as service provider's edge device (PE-Provider Edge) technology, IPv6/IPv4 two-stack machine system, IPv6 tunneling technique, protocol translation technology (NAT-PT) etc.
In numerous transitional technologies, the PE technology is the IPv4-IPv6 transitional technology that a kind of flexibility is strong, extensibility is good.The PE technology can allow a plurality of isolated IPv6 sites cross over the IPv4 network and realize transparent communication by disposing the dual-stacker router PE realization isolated IPv6 site interconnection of supporting IPv4 and IPv6 at IPv4 network and isolated IPv6 site border.In existing IPv4 network, multiple label switching technology (MPLS-Multiple Protocol Label Switch) and inter-domain routing protocol such as MP-BGP (MP-BGP-Multi-Protocol Border Gateway) extensive use.Referring to Fig. 3, isolated IPv6 site is connected to pe router by its client boundary equipment (CE-Custom Edge) router, ce router is announced the IPv6 routing iinformation of local isolated IPv6 site to pe router, and pe router utilizes MP-BGP to transmit the routing iinformation of isolated IPv6 site mutually in the IPv4 network.Afterwards, pe router is automatically set up the MPLS point-to-point tunnel that passes through the IPv4 network according to these IPv6 routing iinformations.The IPv6 unicast message is encapsulated in the MPLS tunnel and is sent to other isolated IPv6 site from an isolated IPv6 site.By these MPLS tunnels, a plurality of isolated IPv6 sites just can intercom mutually.Because adopt multiple label switching technology MPLS encapsulation IPv6 message, the IPv4 network need not upgrading, and is professional unaffected.Like this, by the PE technology, can carry out unicast communication between the isolated IPv6 site.
Present PE technology has mainly solved the unicast communication problem of isolated IPv6 site, but can't carry the IPv6 multicast, can't carry out the IPv6 cast communication between isolated IPv6 site.
Summary of the invention
There is the problem that in the IPv4 network, to carry out the IPv6 cast communication between isolated IPv6 site in the prior art in order to solve, the invention provides multicast groups method between a kind of isolated IPv6 site, isolated IPv6 site is connected the IPv4 network edge by service provider's edge device, said method comprising the steps of:
Steps A: service provider's edge device is provided with the local multicast parameter;
Step B: service provider's edge device transmits local multicast parameters mutually in IPv4;
Step C: between service provider's edge device multicast parameters is held consultation, set up the multicast services tunnel according to negotiation result in IPv4, the IPv4 multicast address in described multicast services tunnel is the IP address of scope from 224.0.0.0 to 239.255.255.255;
Step D: set up the multicast neighbor relation between service provider's edge device.
The content of multicast parameters comprises at least described in the described steps A: whether local isolated IPv6 site supports multicast, and whether local isolated IPv6 site has moved multicast, the tunneling technique that service provider's edge device is adopted, and the learning method of multicast neighbor relation.
Preferably, described multicast parameters also comprises the IPv4 multicast address that is used to set up IPv4 multicast services tunnel needs.
Among the described step B, described service provider's edge device utilizes inter-domain routing protocol to carry out the mutual transmission of described multicast parameters.
Preferably, described service provider's edge device utilizes the Border Gateway Protocol in the inter-domain routing protocol to carry out the mutual transmission of described multicast parameters, upgrade a kind of expansion type of structure in the message in Border Gateway Protocol, can reach the network reachability information message format according to the multi-protocols in the Border Gateway Protocol and be encapsulated, pass to other service provider's edge device.
Described step C specifically comprises: after service provider's edge device is received the corresponding multicast parameters of other service provider's edge device transmission, through consulting to judge other isolated IPv6 site of existence, described other isolated IPv6 site support has also moved multicast, and service provider's edge device of described other isolated IPv6 site correspondence and the identical tunneling technique of local service provider edge device use, then utilize described tunneling technique to create the multicast services tunnel.
Described step D specifically comprises: the learning method of the multicast neighbor relation of setting in the content of service provider's edge device according to described multicast parameters is set up the multicast neighbor relation.
The learning method of described multicast neighbor relation comprises: service provider's edge device utilizes multicast services tunnel or Border Gateway Protocol expansion to send the multicast protocol message, transmitting IPV6 isolated island multicast path, thereby finish the study of multicast neighbor relation by reachability information.
Preferably, this method further comprises:
Set up after the multicast neighbor relation, isolated IPv6 site sends multicast by service provider's edge device to service provider's edge device of another isolated IPv6 site correspondence and joins request;
Requested service provider's edge device sends to the multicast message in this isolated IPv6 site on the multicast services tunnel;
Send the IPv6 multicast message that is requested isolated island that the edge device receiving group service tunnel transmission of requested service provider comes, and then will transmit on original isolated IPv6 site of multicast message in local isolated IPv6 site.
The present invention also provides a kind of service provider's edge device that is used to dispose multicast between isolated IPv6 site, and described service provider's edge device is connected the IPv4 network edge with isolated IPv6 site, and described service provider's edge device comprises:
Multicast parameters is provided with module, is used for service provider's edge device the local multicast parameter is set;
Multicast parameters is transmitted module, is used for service provider's edge device and transmits multicast parameters mutually at IPv4, and described multicast parameters also comprises the IPv4 multicast address that is used to set up IPv4 multicast services tunnel needs;
The multicast parameters negotiation module is used between service provider's edge device multicast parameters being held consultation;
Module is set up in the multicast services tunnel, is used for setting up the multicast services tunnel according to negotiation result at IPv4, and the IPv4 multicast address in described multicast services tunnel is the IP address of scope from 224.0.0.0 to 239.255.255.255;
Described multicast services tunnel is set up module and specifically is used for, receive the corresponding multicast parameters of other service provider's edge device transmission at service provider's edge device after, through consulting to judge other isolated IPv6 site of existence, described other isolated IPv6 site support has also moved multicast, and service provider's edge device of described other isolated IPv6 site correspondence and the identical tunneling technique of local service provider edge device use, then utilize described tunneling technique to create the multicast services tunnel;
The multicast neighbor relation is set up module, is used for setting up between service provider's edge device the multicast neighbor relation.
The invention has the beneficial effects as follows:
1. technical scheme of the present invention is by setting up the tunnel at the IPv4 network, and isolated IPv6 site disconnected from each other can be realized cast communication originally, and the ability of IPv6 multicast intercommunication between a plurality of isolated IPv6 sites is provided.
2.IPv6 isolated island interconnects by existing IPv4 network; make full use of the equipment of original IPv4 core network, need not existing IPv4 core network to be upgraded protection user's investment; reduce the network upgrade expense, to realizing that IPv4 is to the very important meaning of having seamlessly transitted of IPv6.
3. the technical scheme of the present invention's proposition possesses good extensibility, and newly-increased IPv6 equipment can be connected in the existing IPv4 network at any time, possesses the ability of supporting large-scale isolated IPv6 site multicast interconnection.
4. can the multiple tunneling technique of flexible adaptation, the technical different abilities that taken into full account multiple existing tunnel technology, can according to future technology development and the needs of practical application choose different implementation strategies flexibly.
5. the scheme of the present invention's proposition can be found isolated IPv6 site automatically and generate the multicast service tunnel according to network topology, need not the manual static configuration of carrying out.
6. existing mature protocol is fully used for reference, used to the scheme that proposes of the present invention, need not existing protocol is carried out great, need not to build brand-new agreement.
7. the scheme of the present invention's proposition realizes greatly having avoided technical risk easily, has good flexibility and extensibility.
8. the scheme of the present invention's proposition has no requirement to the IPv6 CE equipment in the isolated IPv6 site, does not need CE equipment to support the IPv4 agreement.
Description of drawings
The schematic diagram that Fig. 1 transmits for multicast tree;
The schematic diagram that Fig. 2 transmits for clean culture;
Fig. 3 is that isolated IPv6 site is crossed over the network topological diagram that the IPv4 network is realized unicast communication in the prior art;
Fig. 4 is an isolated IPv6 site initial condition schematic diagram of the present invention;
How Fig. 5 creates the flow chart of MST for judgement of the present invention;
Create MST in the described IPv4 network of Fig. 6 embodiment of the invention, waited for the network topological diagram that multicast tree further connects in the isolated IPv6 site;
Fig. 7 is that isolated IPv6 site of the present invention is crossed over the network topological diagram that the IPv4 network is realized cast communication;
Fig. 8 is the flow chart of the method for the invention;
Fig. 9 is the structure chart of service provider's edge device of the present invention.
Specific embodiments
The invention will be further described below in conjunction with drawings and Examples, but not as a limitation of the invention.
The present invention proposes a kind of IPv4 network that passes through and connect isolated IPv6 site, dynamically set up the multicast services tunnel (MST-Multicast Service Tunnel) of IPv4 point, realize the method for cast communication between the isolated IPv6 site to the carrying IPv6 multicast message of multiple spot.Specific embodiments is as follows:
Referring to Fig. 4, service provider network is the IPv4 framework, and when initial condition, the IPv6 networks development is gradual, and the IPv6 network that diverse geographic location occurs is isolated by the IPv4 complete network, can not all directly link to each other, and is called as isolated IPv6 site.Three isolated IPv6 sites are arranged among the figure, be respectively isolated IPv6 site 1, isolated IPv6 site 2 and isolated IPv6 site 3.They are connected the IPv4 network edge by service provider's pe router PE1, PE2 and PE3 respectively.Pe router is a dual-stacker router of supporting IPv4/IPv6 simultaneously, can enable IPv6 multicast and IPv4 multicast simultaneously.Three isolated IPv6 sites link to each other with PE 3 by corresponding PE1, PE2 on ce router CE1, CE2 and CE3 and the IPv4 network respectively.Ce router is pure IPv6 router.Ce router is announced the IPv6 routing iinformation of local isolated IPv6 site to pe router.
After the inner deployment of isolated IPv6 site finished, inner clean culture of isolated IPv6 site and multicast all can normally move.But because the isolation of IPv4, clean culture between isolated IPv6 site and multicast can't be crossed over the IPv4 network and realize.
At this moment, find and set up the clean culture tunnel between the isolated IPv6 site at first mutually, this utilizes prior art just can realize, has done detailed description in background technology.Like this, the clean culture between isolated IPv6 site just can be crossed over the IPv4 network and realized.
Because the IPv6 multicast tree in a plurality of isolated IPv6 sites is separate, be limited in the isolated IPv6 site, in order to realize crossing between isolated IPv6 site the cast communication of IPv4 network, referring to Fig. 8, the present invention adopts following step:
The existence that step 100:PE utilizes the BGP expansion technique to find and learn other isolated IPv6 sites is transmitted IPv6 route reachability information mutually by the IPv4 network.Like this, PE equipment not only can be known the routing iinformation of the isolated IPv6 site that directly links to each other with it, can also dynamically obtain the IPv6 route reachability information of other isolated IPv6 site in the network.Can carry out unicast communication by existing IPv4-IPv6 clean culture transitional technology between the isolated IPv6 site this moment.
Step 101:PE1, PE2, PE3 set the multicast relevant parameter respectively, and the multicast relevant parameter comprises: the learning method that whether this isolated IPv6 site support whether multicast, isolated IPv6 site have moved multicast services, set up the multicast protocol type that adopts in the multicast tree tunnel, the IPv4 multicast address that is used to set up MST tunnel needs, multicast neighbor concern.
Wherein setting up the tunneling technique type that adopts in the multicast tree tunnel can comprise: the RSVP-TE Point-to-Multipoint lsp tunnel (point-to-multipoint label switch paths of resource reservation-traffic engineering of the full clean culture tunnel that connects, support multicast.), PIM-SM (Protocol Independent Multicast-Sparse Mode, Protocol Independent Multicast-sparse mode) the multicast tree tunnel of Jian Liing, PIM-SSM (Protocol Independent Multicast-Source Specific Multicast, Protocol Independent Multicast-specific source multicasting) the Source-Specific Multicast tree tunnel of setting up, PIM-Bidir (Protocol Independent Multicast-Bidirectional Mode, Protocol Independent Multicast-two-way mode) tunnel, MPLS P2MP (Multiple Protocol Label Switch Point to Multiple Point, the multiple spot path is put in multiprotocol label switching) tunnel, clean culture GRE (Generic Routing Encapsulation, generic route encapsulation) tunnel, shared tree tunnel with other type.
The IPv4 multicast address that is used to set up MST tunnel needs is the IP address of scope from 224.0.0.0 to 239.255.255.255.
The learning method of multicast neighbor relation comprises: utilize MST tunnel or BGP expansion to send the multicast protocol message, to transmit IPV6 isolated island multicast path by reachability information, to realize the foundation of multicast neighbor relation.
In the present embodiment, the multicast parameters of PE1, PE2, PE3 is: the tunneling technique that this isolated IPv6 site supports multicast, isolated IPv6 site to move multicast services, employing is that the IP address of PIM-SM, multicast is 224.128.64.32, and the learning method of multicast neighbor relation is PIM-SMHELLO.
Between step 102:PE1, PE2, the PE3 by BGP according to the multicast relevant parameter in the mutual transmission step 101 of the resulting routing iinformation of step 100.This parameter can be carried PE to other by Border Gateway Protocol or Exterior Gateway Protocol.
In the present embodiment, implementation is: pe router is constructed a kind of specific expansion type at IPV6 multicast of the present invention in BGP UPDATE message, can reach network reachability information (MP_REACH_NLRI) message format according to the multi-protocols among the BGP and be encapsulated.MP_REACH_NLRI is defined among the RFC2858, and form is as follows:
Step 103: referring to Fig. 5, PE1 judges whether to exist IPV6 isolated island 2, IPV6 isolated island 3 according to the multicast relevant parameter of learning.If there is no 3 on IPV6 isolated island 2 and IPV6 isolated island are not set up the MST tunnel.IPV6 isolated island 2 and IPV6 isolated island 3 exists in the present embodiment, and then PE1 judges IPV6 isolated island 2 according to the multicast relevant parameter of learning and multicast is supported and moved to IPV6 isolated island 3 whether.If multicast is not supported or do not moved to IPV6 isolated island 2 and IPV6 isolated island 3, then do not create MST.IPV6 isolated island 2 and IPV6 isolated island 3 are supported and the operation multicast in the present embodiment, and then PE1 judges according to the multicast relevant parameter of learning whether PE1, PE2, PE3 adopt identical technology to create the tunnel.If PE2 does not have to adopt the technology identical with PE1 to create the tunnel with PE 3, then do not set up the MST tunnel.PE1 uses the PIM-SM technology to create the tunnel in the present embodiment, and PE2, PE3 also use the PIM-SM technology to create the tunnel.PE1, PE2, PE3 adopt the multicast neighbor relational learning method of PIM-SM Hello.
Step 104:PE1 is according to IPv4 multicast address 224.128.64.32 and adopt the PIM-SM technology to set up a corresponding IPv4 multicast share tree in the IPv4 network.
All add this multicast tree that is specifically designed to cast communication between the isolated IPv6 site referring to Fig. 6 PE1, PE2, PE 3, this IPv4 multicast share tree uses as the MST tunnel.Feature according to the IPv4 shared tree, the PE of all isolated IPv6 sites is the recipient of this multicast tree (MST), other PE of the information that any one PE sends can receive, the state of this moment is an intermediateness: MST just creates among the IPv4, the isolated IPv6 site multicast tree also is not connected to each other by MST, need set up the multicast neighbor relation.
The method that step 105:PE1 learns according to the multicast neighbor that step 103 is determined, PE1 utilizes the MST tunnel to send the multicast hello packet, hello packet passes to PE2 and PE3 by the MST tunnel, this hello packet can be received by PE2 and PE3, like this IPv6 multicast neighbor relation of just setting up by MST between PE1, PE2, the PE3.
Step 106: referring to Fig. 7, set up after the multicast neighbor relation, PE2 sends multicast by MST to PE1 and joins request, and after corresponding PE1 received request, the isolated IPv6 site of PE1 correspondence sent to the IPv6 multicast data message in this isolated island the CE1 of this isolated IPv6 site; CE1 passes to PE1 according to IPv6 multicast routing iinformation with multicast message.
PE1 is encapsulated in the IPv6 multicast message in the MST tunnel, MST tunnel (utilizing existing IPv4 retransmission technique) is sent to other with the IPv6 multicast message, and all need receive the PE equipment of the isolated IPv6 site of this message, when the multicast message of IPv6 is transmitted in the tunnel, be transparent to the equipment of IPv4 network internal.
PE2 will receive the IPv6 multicast message that MST transmits the PE1 isolated island that comes like this, removes the MST encapsulation, and message is reduced to common IPv6 multicast message, passes to CE2 then.CE2 and then will transmit normally on original IPv6 multicast tree of multicast packet in local isolated IPv6 site.
Like this, originally the IPv6 multicast tree in the isolated island of being isolated by IPv4 just couples together by MST, can intercom mutually.So far, just can normally carry out, and, all needn't be concerned about this process for the equipment of isolated IPv6 site inside and the equipment in the IPv4 network by the cast communication between MST tunnel isolated IPv6 site.All work is all carried out on PE, and in the time of therefore actual enforcement, the ability that only needs the PE upgrading to possess technical scheme of the present invention gets final product.
Referring to Fig. 9, the present invention also provides a kind of service provider's edge device that is used to dispose multicast between isolated IPv6 site, and comprising: multicast parameters is provided with module 1, is used for service provider's edge device the local multicast parameter is set; Multicast parameters is transmitted module 2, is used for service provider's edge device and transmits multicast parameters mutually at IPv4; Multicast parameters negotiation module 3 is used between service provider's edge device multicast parameters being held consultation; Module 4 is set up in the multicast services tunnel, is used for setting up the multicast services tunnel according to negotiation result at IPv4; The multicast neighbor relation is set up module 5, is used for setting up between service provider's edge device the multicast neighbor relation.The multicast parameters that multicast parameters is provided with the output of module 1 is input to multicast parameters transmission module 2, the output of multicast parameters transmission module 2 is input to multicast parameters negotiation module 3 and holds consultation, the result who consults is input to the multicast services tunnel and sets up module 4 and be used to set up the multicast services tunnel, and the multicast services tunnel is set up the back and triggered the multicast neighbor relation and sets up module 5 to set up the multicast neighbor relation.Adopt service provider's edge device of the present invention can realize crossing over multicast between the isolated IPv6 site of IPv4 network.
More than be that preferred implementation of the present invention is described, those skilled in the art is in the scheme scope of the technology of the present invention, and common variation and the replacement carried out all should be included in protection scope of the present invention.
Claims (8)
1. multicast groups method between an isolated IPv6 site, isolated IPv6 site is connected the IPv4 network edge by service provider's edge device, it is characterized in that, said method comprising the steps of:
Steps A: service provider's edge device is provided with the local multicast parameter;
Step B: service provider's edge device transmits local multicast parameters mutually in IPv4, described multicast parameters also comprises the IPv4 multicast address that is used to set up IPv4 multicast services tunnel needs;
Step C: between service provider's edge device multicast parameters is held consultation, set up the multicast services tunnel according to negotiation result in IPv4, the IPv4 multicast address in described multicast services tunnel is the IP address of scope from 224.0.0.0 to 239.255.255.255;
Described step C specifically comprises: after service provider's edge device is received the corresponding multicast parameters of other service provider's edge device transmission, through consulting to judge other isolated IPv6 site of existence, described other isolated IPv6 site support has also moved multicast, and service provider's edge device of described other isolated IPv6 site correspondence and the identical tunneling technique of local service provider edge device use, then utilize described tunneling technique to create the multicast services tunnel;
Step D: set up the multicast neighbor relation between service provider's edge device.
2. multicast groups method between isolated IPv6 site according to claim 1, it is characterized in that, the content of multicast parameters comprises at least described in the described steps A: whether local isolated IPv6 site supports multicast, whether local isolated IPv6 site has moved multicast, the tunneling technique that service provider's edge device is adopted, and the learning method of multicast neighbor relation.
3. multicast groups method between isolated IPv6 site according to claim 1 and 2 is characterized in that, among the described step B, described service provider's edge device utilizes inter-domain routing protocol to carry out the mutual transmission of described multicast parameters.
4. multicast groups method between isolated IPv6 site according to claim 3, it is characterized in that, described service provider's edge device utilizes the Border Gateway Protocol in the inter-domain routing protocol to carry out the mutual transmission of described multicast parameters, upgrade a kind of expansion type of structure in the message in Border Gateway Protocol, can reach the network reachability information message format according to the multi-protocols in the Border Gateway Protocol and be encapsulated, pass to other service provider's edge device.
5. multicast groups method between isolated IPv6 site according to claim 2, it is characterized in that described step D specifically comprises: the learning method of the multicast neighbor relation of setting in the content of service provider's edge device according to described multicast parameters is set up the multicast neighbor relation.
6. multicast groups method between isolated IPv6 site according to claim 2, it is characterized in that, the learning method of described multicast neighbor relation comprises: service provider's edge device utilizes multicast services tunnel or Border Gateway Protocol expansion to send the multicast protocol message, transmitting IPV6 isolated island multicast path, thereby finish the study of multicast neighbor relation by reachability information.
7. multicast groups method between isolated IPv6 site according to claim 1 is characterized in that, described method further comprises:
Set up after the multicast neighbor relation, isolated IPv6 site sends multicast by service provider's edge device to service provider's edge device of another isolated IPv6 site correspondence and joins request;
Requested service provider's edge device sends to the multicast message in this isolated IPv6 site on the multicast services tunnel;
Send the IPv6 multicast message that is requested isolated island that the edge device receiving group service tunnel transmission of requested service provider comes, and then will transmit on original isolated IPv6 site of multicast message in local isolated IPv6 site.
8. service provider's edge device that is used to dispose multicast between isolated IPv6 site, described service provider's edge device is connected the IPv4 network edge with isolated IPv6 site, it is characterized in that, and described service provider's edge device comprises:
Multicast parameters is provided with module, is used for service provider's edge device the local multicast parameter is set;
Multicast parameters is transmitted module, is used for service provider's edge device and transmits multicast parameters mutually at IPv4, and described multicast parameters also comprises the IPv4 multicast address that is used to set up IPv4 multicast services tunnel needs;
The multicast parameters negotiation module is used between service provider's edge device multicast parameters being held consultation;
Module is set up in the multicast services tunnel, is used for setting up the multicast services tunnel according to negotiation result at IPv4, and the IPv4 multicast address in described multicast services tunnel is the IP address of scope from 224.0.0.0 to 239.255.255.255;
Described multicast services tunnel is set up module and specifically is used for, receive the corresponding multicast parameters of other service provider's edge device transmission at service provider's edge device after, through consulting to judge other isolated IPv6 site of existence, described other isolated IPv6 site support has also moved multicast, and service provider's edge device of described other isolated IPv6 site correspondence and the identical tunneling technique of local service provider edge device use, then utilize described tunneling technique to create the multicast services tunnel;
The multicast neighbor relation is set up module, is used for setting up between service provider's edge device the multicast neighbor relation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610032915.6A CN101001193B (en) | 2006-01-11 | 2006-01-11 | Group broadcast desposition method between IPv6 islet and its equipment |
| PCT/CN2006/002591 WO2007079632A1 (en) | 2006-01-11 | 2006-09-30 | A MULTICAST DISPOSING METNOD, MULTICAST METNOD AND APPARATUS AMONG IPv6 ISLANDS |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610032915.6A CN101001193B (en) | 2006-01-11 | 2006-01-11 | Group broadcast desposition method between IPv6 islet and its equipment |
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| Publication Number | Publication Date |
|---|---|
| CN101001193A CN101001193A (en) | 2007-07-18 |
| CN101001193B true CN101001193B (en) | 2011-08-24 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7696913B2 (en) | 2007-05-02 | 2010-04-13 | Cirrus Logic, Inc. | Signal processing system using delta-sigma modulation having an internal stabilizer path with direct output-to-integrator connection |
| CN101296179B (en) * | 2007-10-29 | 2011-01-26 | 清华大学 | Method for IPv6 repeating vector IPv4/6 through inverse path |
| CN101197752B (en) * | 2007-11-19 | 2010-06-02 | 清华大学 | Multicast implementing method based on independent multicast-special source protocol in flexible wire type tunnel |
| CN101336002B (en) * | 2008-07-29 | 2011-11-30 | 中兴通讯股份有限公司 | Method and system for dual-tone multi-frequency signal parameter negotiation between media gateways |
| CN102572007B (en) * | 2011-12-06 | 2015-05-27 | 华为技术有限公司 | Method for forwarding IPv6 (Internet Protocol Version 6) multicasting message across IPv4 (Internet Protocol Version 4) network, and edge equipment |
| CN103326944B (en) * | 2012-03-21 | 2017-12-15 | 华为技术有限公司 | A kind of multicast transmission method, device and network system |
| CN103973459B (en) * | 2013-01-24 | 2018-11-23 | 中兴通讯股份有限公司 | The transmission method and device of multicast message between IPv6 multicast isolated island |
| CN103428096B (en) * | 2013-07-22 | 2016-09-14 | 汉柏科技有限公司 | Exchange visits between a kind of IPV6 isolated island communication method |
| CN114095429B (en) * | 2021-10-14 | 2023-08-15 | 东北大学 | Multi-source multicast flow optimization method based on IPv6 address |
| CN115550193B (en) * | 2022-12-01 | 2023-03-17 | 北京广通优云科技股份有限公司 | Network topology calculation method combining static structure chart and dynamic flow analysis data |
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| CN1476026A (en) * | 2002-08-13 | 2004-02-18 | 乐金电子(天津)电器有限公司 | Electrical condenser |
| WO2004082192A2 (en) * | 2003-03-10 | 2004-09-23 | Cisco Technology, Inc | ARRANGEMENT FOR TRAVERSING AN IPv4 NETWORK BY IPv6 MOBILE ROUTERS |
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| WO2007079632A1 (en) | 2007-07-19 |
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