CN102594655A - Minimum-state IPv4/IPv6 (Internet Protocol version 4/Internet Protocol version 6) packet conversion method using nonspecific IPv6 address - Google Patents
Minimum-state IPv4/IPv6 (Internet Protocol version 4/Internet Protocol version 6) packet conversion method using nonspecific IPv6 address Download PDFInfo
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Abstract
The invention relates to a minimum-state IPv4/IPv6 (Internet Protocol Version 4/Internet Protocol Version 6) packet conversion method using a nonspecific IPv6 address. The method is characterized in that a first type coding format of embedding an IPv4 address and a transmission layer port into an IPv6 address is adopted, a second type coding format of embedding the IPv4 address into the IPv6 address is adopted, a stateless primary conversion method is adopted between boundaries of the global IPv4 network and the IPv6 network of operators, and a minimum-state secondary conversion method is adopted on the boundary of an IPv6 campus network, so a plurality of IPv6 campus network users connected into the IPv6 network can share the IPv4 address and can realize two-way initiated end-to-end communication with the global IPv4 network, and meanwhile, the full-function communication can be realized with the global IPv6 network. Meanwhile, the specific interchangeable virtual instrument (IVI) address is converted into non-specific IPv6 address by using the IPv6/IPv6 address conversion, users can use the stateless IPv6 address autoconfiguration (SLAAC) for realizing the IPv6 address autoconfiguration, and great flexibility is realized.
Description
Technical field
Use the minimum state IPv4/IPv6 grouping conversion method of nonspecific IPv6 address to belong to technical field of the computer network.
Background technology
The Internet has become the most important information infrastructure in the whole world, but the addressing range of the address of widely used the 4th edition procotol IPv4 in the Internet has only 2 at present
32, promptly 4,300,000,000 addresses according to the dispensing rate of present IPv4 address, estimate that the IPv4 address is about to assign after 2011.
The absolute number of present Chinese netizen population has become the first in the world, but the popularity rate of the Internet has only 19%, is lower than global average level (21%), and far below world's level of developed countries (70%).Simultaneously, on average each Chinese netizen only has 0.6 IPv4 address.Therefore, for China, the IPv4 address can't satisfy the demands.This problem all is very serious for other Asian countries and African countries such as India.
In order to solve the not enough problem in IPv4 address, Internet engineering group (IETF) has designed sixth version procotol IPv6, and its addressing of address scope has 2
128, can satisfy the demands.But for various reasons, the IPv6 agreement is incompatible in the IPv4 agreement, can not well interconnect.The theory of design was the problem that interconnects with the method solution of " dual stack " at that time; But the experiences and lessons of IPv6 popularization in nearly ten years proves; Can not visit the numerous network information resources of IPv4, can not can not grow up with the IPv6 network of the numerous telex network of IPv4.
Address transition and protocol conversion are the methods that solution IPv4 and IPv6 interconnect; Like the NAT-PT (RFC2766) that defines in the ietf standard; But NAT-PT is based on the conversion method of state; Poor expandability is classified as historical standard by IETF, gives way for expecting better IPv4/IPv6 transition and coexistence standard.
In the recent period, the draft standard of the IPv4/IPv6 transition submitted to IETF of each research organization and coexistence have from IPv6 to IPv4 initiate the NAT64 of visit IPv4/IPv6 transitional technology and from IPv6 to IPv4 and stateless (or minimum state) the address prefix IPv4/IPv6 transitional technology IVI that visits to the two-way initiation of IPv6 from IPv4.Stateless address transition and method for converting protocol; Has extensibility; But its IPv4 is to adopting the 1:1 map addresses between the IPv6; Can not effectively utilize IPv4 address resource in short supply, the address exchanging visit of the server that therefore can only be used for IPv6 to IPv4 server or client computer and IPv4 server/client to the IPv6 server.The address transition of state and the method for protocol conversion are arranged, can support the mapping of IPv4, and extensibility is better than NAT-PT slightly, but only support the communication that the IPv6 client computer is initiated, have significant limitation to 1:N between the IPv6 address.
Basic principle of the present invention is on the basis of stateless address conversion and protocol conversion; Utilize transport layer port can distinguish the principle of communication process; Be mapped to IPv4 address and transport layer port among the IPv6 cluster address of appointment; Thereby shine upon to the stateless mapped extension of 1:1 between the IPv6 IPv4 to 1:N, can make full use of IPv4 address resource in short supply, have good expandability.Therefore can systematically solve the problem of IPv4 and IPv6 coexistence and transition comprehensively, have very large application prospect.Simultaneously, utilizing the IPv6/IPv6 address transition is specific I VI address transition unspecific IPv6 address, and the user can use stateless IPv6 address to dispose the automatic configuration that (SLAAC) realizes the IPv6 address automatically, has great flexibility.
Essential characteristic of the present invention comprises: 1) adopt the IPv4 address to add between first kind coded format that transport layer port embeds the IPv6 address adds transport layer port in an IPv4 address of the subclass of an IPv6 address of operator and operator the subclass and set up unique mapping relations; 2) the second type of coded format that adopts the IPv4 address to embed the IPv6 address set up unique mapping relations between the subclass of an IPv6 address of global ip v4 address and operator; 3) adopt the secondary conversion method, between the IPv6 of global ip v4 network and operator network boundary, adopt stateless first order conversion method; In the second level conversion method of the garden selvage circle employing minimum state that the IPv6 of operator network and the main frame that adopts the IPv6 agreement belong to, utilize the port collision of minimum state to avoid algorithm to carry out port mapping, carry out the IPv6/IPv6 address transition simultaneously.4) utilize the method for domain name conversion to convert IPv4 domain name record into IPv6 domain name record; 5) a plurality of IPv6 computer users that insert the single stack network of IPv6 can share same IPv4 address and carry out end-to-end communicating by letter with global ip v4 network, can carry out global function with global IPv 6 network simultaneously and communicate by letter; 6) the IPv6 computer of the single stack network of access IPv6 does not need the IVI IPv6 address of handling characteristics.
Summary of the invention
The objective of the invention is under the situation that keeps stateless and minimum state; Adopt the secondary conversion method to realize end-to-end IPv4/IPv6 packet package conversion method; Between the IPv6 of global ip v4 network and operator network boundary, adopt carrier-class translation router based on stateless first order conversion method; On the border of IPv6 garden net, adopt garden net translation router based on the second level conversion method of minimum state; Make a plurality of users that insert the single stack network of IPv6 can share same IPv4 address and carry out end-to-end communicating by letter, can carry out global function with global IPv 6 network simultaneously and communicate by letter with global ip v4 network.The end-to-end communication structure figure of main frame that is connected into IPv4, IPv6 network among the present invention respectively is as shown in Figure 1.
Use the minimum state IPv4/IPv6 grouping conversion method of nonspecific IPv6 address, it is characterized in that, said method realizes in the Internet successively according to the following steps:
Step (1): initialization
Step (1.1): be divided into following two types to the IPv4 address:
First kind IPv4 address, the IPv4 address block to the use of IPv6 main frame is prepared by operator,
Second type of IPv4 address, the IPv4 address in the whole world wherein contains said operator oneself, and does not belong to the IPv4 address block of said IPv6 main frame,
Step (1.2): define following two types of coded formats:
Said first kind IPv4 address is adopted and is added the coded format that transport layer port embeds said IPv6 address to the IPv4 address, is called first kind coded format; Embedding 32 IPv4 addresses based on the 32+n position in the IPv6 address format of 32 cluster prefixs of operator; N is less than 32; Constitute the IVI prefix, embed address multiplex than M at the 96th to 111 simultaneously, embed port shift value k at the 112nd to 128; Wherein the value of k 0 and M-1 between, then fill complete 0 as spare bits is arranged between 64+n to 95; An IPv4 address can supply M IPv6 main frame to use through distinguishing transport layer port simultaneously,
The coded format that directly embeds the IPv4 address said IPv6 address is adopted in said first kind IPv4 address, is called second type of coded format; Embed 32 IPv4 addresses in said operator based on the 32+n position in the IPv6 address format of 32 cluster prefixs, n constitutes the IVI prefix less than 32, and spare bits fills complete 0 between 64+n to 128 simultaneously; Any addressable IPv4 main frame in the whole world can have an IPv6 address corresponding with it
Said two types of IVI addresses that are made up of above IVI prefix make to have unique, two-way mapping relations between the subclass of said IPv4 address and IPv6 address, form the IVI address translation rule;
Step (1.3): define following transport layer port mapping algorithm PCA, so that when the IPv6 main frame that adopts first kind of coded format is initiated communication, be mapped to the transport layer source port that produces at random by the described port range of said first kind coded format;
Get rid of 0-1024 port and other well-known port earlier; List the port mapping table that is allowed for the IPv6 main frame of said employing first kind coded format again,, be mapped to this mapping table to the transport layer source port that produces at random according to the request order; This type of follow-up grouping of monitoring in the time period of setting; So that when no longer including follow-up packet arrives, discharge the corresponding list item of said port mapping table, for future use;
Step (1.4): all IPv4 address converts IPv6 address block that the IPv6 address the obtains address pool as garden net translation router into according to first kind coded format in the first kind IPv4 address block that step (1.1) is distributed;
Step (1.5): the mapping table of initialization garden net translation router;
Step (1.6): the IPv6 main frame carries out the automatic configuration (for distinguishing IVI IPv6 address, hereinafter the IPv6 main frame is called " User IP v6 address " through the IPv6 address that SLAAC obtains in the garden net) of IPv6 address in the garden net through SLAAC.
Step (2): the IPv6 computer inquery domain name change server in the garden net,
Step (2.1): domain name change server inquiry IPv6 domain name record (AAAA Record), if any IPv6 domain name record execution in step (2.3), as there is not IPv6 domain name record, execution in step (2.2),
Step (2.2): domain name transfer gateway inquiry IPv4 domain name record (A Record), if any IPv4 domain name record, according to second type of coded format; Convert A Record into AAAA Record, as do not have IPv4 domain name record, produce the error messages of not finding the domain name record; Execution in step (2.4)
Step (2.3): the domain name change server returns IPv6 domain name record for the IPv6 computer in the garden
Step (2.4): receive IPv6 domain name record, as be error messages, stop to carry out, as obtain IPv6 domain name record, execution in step (3);
Step (3): the IPv6 computer in the garden net sends and divides into groups;
Step (4): garden net translation router receives IPv6 and divides into groups;
Step (4.1): judge whether destination address is the IVI address, as be the IVI address that execution in step (4.2) is not as being the IVI address, execution in step (4.6);
Step (4.2): destination address is constant, and target port is constant,
Whether step (4.3): searching in the mapping table of garden net translation router has and source address corresponding mapping table clauses and subclauses; If do not have then from address pool, take out the IVI IPv6 address of an available first kind coded format, set up the mapping table clauses and subclauses with source address;
Step (4.4):, be the IVI IPv6 address of first kind coded format from User IP v6 address transition with source address according to routing table entry;
Step (4.5): source port is done the PCA mapping,
Step (4.6): send IPv6 and divide into groups;
Step (5): the IPv4/IPv6 translation router of stateless carrier-class receives IPv6 and divides into groups;
Step (5.1): destination address converts the IPv4 address into by second type of coded format, and target port is constant,
Step (5.2): source address converts the IPv4 address into by first kind coded format, and source port is constant,
Step (5.3): press RFC2766 and carry out other handling procedure except that address transition;
Step (5.4): send IPv4 and divide into groups;
Step (6): the Target IP v4 computer on the Global Internet receives and divides into groups, and carries out corresponding computing;
Step (7): this IPv4 computer on the Global Internet sends the IPv6 computer that the present invention supported and divides into groups; Wherein source address is the IPv4 address of IPv4 computer, and destination address is the IPv4 mirror image address (promptly be embedded in IPv4 address in IVI IPv6 address) of the User IP v6 address of IPv6 computer through the IVI IPv6 address after the IPv6/IPv6 conversion;
Step (8): the IPv4/IPv6 translation router of stateless carrier-class receives IPv4 divides into groups,
Step (8.1): destination address converts the IPv6 address into by first kind coded format, and target port is constant
Step (8.2): source address converts the IPv6 address into by second type of coded format, and source port is constant,
Step (8.3): press RFC2766 and carry out other handling procedure except that address transition;
Step (8.4): send IPv6 and divide into groups to the single stack network of IPv6;
Step (9): garden net translation router receives IPv6 and divides into groups;
Step (9.1): judge whether source address is the IVI address, in this way, execution in step (9.2) is not as being execution in step (9.5);
Step (9.2): source address is constant, and source port is constant,
Whether step (9.3): searching in the mapping table of garden net translation router has and destination address corresponding mapping table clauses and subclauses, if not then packet discard; If have,, be User IP v6 address from the IVI IPv6 address transition of first kind coded format with destination address then according to routing table entry;
Step (9.4): target port is done the PCA mapping,
Step (9.5): send IPv6 and divide into groups execution in step (10);
Step (10): the IPv6 computer receives and divides into groups;
Step (11): return step (3);
Use the minimum state IPv4/IPv6 grouping conversion method of nonspecific IPv6 address; It is characterized in that; By describing of IPv4 computer initiation arbitrarily on the Global Internet, begin to carry out by step (7) with also can imitate above-mentioned steps by the step of the IPv6 compunication in the IPv6 network.
Use the minimum state IPv4/IPv6 grouping conversion method of nonspecific IPv6 address, it is characterized in that, the function of carrier-class translation router and garden net translation router also can realize on an equipment.
The experiment test result shows that method described in the invention can utilize the IPv4 address resource expeditiously; And can keep the ill-mannered state property of first order IPv4/IPv6 packet converter; Solve the problem of IPv4 main frame and the end-to-end two-way intercommunication of IPv6 main frame all sidedly, for the coexistence and the transition of IPv4/IPv6 network provides simply, solution efficiently.
Description of drawings
Fig. 1 is connected into the end-to-end communication structure figure of main frame of IPv4, IPv6 network respectively.
Fig. 2 coded format, (a) the IPv4 address adds the first kind coded format that transport layer port embeds the IPv6 address; (b) the IPv4 address embeds second type of coded format of IPv6 address.
The IPv4/IPv6 translation router address of the stateless carrier-class of Fig. 3 and transport layer port mapping instance (M=4).
Fig. 4 garden net translation router IPv6 address transition and port mapping instance (M=4)
Fig. 5 the inventive method workflow block diagram.
Embodiment
The key technology of the method for the invention comprises: the IPv4 address adds transport layer port and embeds the first kind coded format of IPv6 address and second type of coded format that the IPv4 address embeds the IPv6 address; Between the subclass of IPv4 address and IPv6 address, set up and have unique, two-way mapping relations (IVI address translation rule); A kind of transport layer port mapping algorithm (PCA) is according to the IPv6 address employed transport layer source port of selecting automatically to communicate by letter; A kind of domain name conversion method; Adopt the IPv4/IPv6 grouping conversion method of two-stage transducers.
(1) the IPv4 address adds the first kind coded format of transport layer port embedding IPv6 address and second type of coded format that the IPv4 address embeds the IPv6 address
In order to reach stateless, end-to-end IPv4/IPv6 packet switched, must between IPv4 address and IPv6 address, set up unique mapping relations, this mapping relations must be by the self-description in address own simultaneously.First difficult point of this problem is because the IPv6 address space is more a lot of greatly than IPv4 address space, is impossible to setting up unique mapping relations between IPv6 address and the IPv4 address arbitrarily.The present invention selects the subclass of an IPv6 dexterously, and sets up unique mapping relations between the IPv4 address.Second difficult point of this problem is to guarantee that the IPv6 address that produces can reach in the whole world.The present invention has adopted the method for IVI prefix, and promptly operator's prefix embeds the IPv4 address after adding some positions, has taken all factors into consideration the cluster property of address, the demands such as utilance of IPv6 address.The 3rd difficult point of this problem is to utilize IPv4 address resource in short supply efficiently.The present invention; The operating position actual according to network, at any time, concurrent communication process number generally is far smaller than the theoretical maximum 65536 of concurrent process number; Therefore utilize the combination of IPv4 address and port corresponding, improved the utilance of IPv4 address greatly with the IPv6 address.The concurrent port number that allows like maximum is 256; Then the rate of taking of IPv4 address can be up to 256; Promptly 1 IPv4B class address usefulness can be worked as in 1 IPv4C class address; An IPv4A class address usefulness can be worked as in 1 IPv4B class address, and 1 IPv4A class address has and present the same big address space 4,300,000,000 addresses, the Internet.Simultaneously, embed back 32 of IPv6 address to address utilance and port shift value, make the mapping relations can be by the self-description in address own.This has produced first kind geocoding form, shown in Fig. 2 (a).For the IPv4 address of at present using for the IPv4 main frame, need not carry out multiplexingly by this operator to it, therefore defined second type of geocoding form, shown in Fig. 2 (b).
(2) foundation has unique, two-way mapping relations (IVI address translation rule) between the subclass of IPv4 address and IPv6 address
Of (1), in order to reach stateless, end-to-end IPv4/IPv6 packet switched, must between IPv4 address and IPv6 address, set up unique mapping relations, this mapping relations must be by the self-description in address own simultaneously.Make any addressable IPv4 main frame in the whole world can have an IPv6 address with it correspondence be simple, be a difficult point but make the IPv6 address have unique IPv4 address corresponding.The present invention is divided into two types to the IPv4 address, and the first kind is an operator oneself, prepares to give the IPv4 address block of IPv6 main frame use, and second type is the IPv4 address (contain operator oneself, be not used in the IPv4 address block of IPv6 main frame) in the whole world; For first kind IPv4 address block, adopt first kind coded format, and selecting the transport layer port of IPv4 address, multiplexing (0≤k≤M-1), promptly an IPv4 address can supply M IPv6 main frame use simultaneously through distinguishing transport layer port with port shift value k than M; For second type of IPv4 address block, adopt second type of coded format, promptly global any addressable IPv4 main frame can have an IPv6 address corresponding with it; Can realize inserting respectively the end system of IPv4 and IPv6 the Internet like this, the communication of two-way initiation; Grouping behind the reference address is carried out being handled by the method that RFC2765 describes.
(3) a kind of transport layer port mapping algorithm (PCA) is according to the IPv6 address employed transport layer source port of selecting automatically to communicate by letter
The basic element of internet communication is a five-tuple, i.e. protocol type, source address, former port, destination address, target port.When the IPv6 address through address multiplex is destination address, according to first kind coded format, by target port can be unique definite IPv6 address.But when the IPv6 main frame is initiated with the communicating by letter of IPv4 server, the IPv6 main frame will produce the stochastic source port, and this source port is not necessarily fallen the port range that this IPv6 main frame can allow.The present invention is according to first kind coded format; For the main frame that adopts this coded format; When it initiated communication, the transport layer source port that it produces at random must be mapped to by the described port range of first kind coded format, and its rudimentary algorithm is listed the port mapping table that is allowed for getting rid of the back to 0-1024 with other well-known port (well-known port) to the main frame of each first kind coded format; According to the request order; Be mapped to this mapping table to the transport layer source port that produces at random, monitor this type of follow-up grouping simultaneously, when it does not occur in a period of time; Discharge the corresponding list item of mapping table, use for the new transport layer source port that produces at random.Therefore can solve the problem of port mapping.The IPv4/IPv6 translation router address of stateless carrier-class and transport layer port mapping instance (M=4) are as shown in Figure 3.
(4) IPv6/IPv6 address conversion method
The IPv6/IPv6 address conversion method is used to realize the address transition between the IVI IPv6 address of User IP v6 address and first kind of coded format.When the user visits the IPv4 network for the first time, in address pool, get the IVI IPv6 address of first kind of available coded format and user's IPv6 address and in mapping table, set up the mapping table clauses and subclauses, inquire about when supplying the follow-up data bag to carry out address transition.Follow-up packet carries out address transition through the query mappings table according to the mapping table clauses and subclauses.After a period of time, the flow of this user capture IPv4 did not pass through, with corresponding mapping table clauses and subclauses deletion.The verification that verification that defines in need be according to RFC1624 when carrying out address transition and Incremental Updating Algorithm are upgraded transport layer with.Can be as required certain or some mapping table clauses and subclauses be set to the static mappings table clause, the static mappings table clause not can because of do not have corresponding data traffic through and deleted.Under the situation that the mapping table clauses and subclauses exist, allow two-way initiation communication.
(5) domain name conversion method
When being positioned at the resource of IPv6 computer access global ip v4 the Internet of garden net; In fact visit is the IPv6 address (IVI address) through the correspondence of transducer, therefore must convert original IPv4 domain name record into IPv6 domain name record through the IVI transformation rule.The present invention adopts the method for domain name translation proxy; When the computer in the IPv4 network of needs visits be two stack computer, can use pure IPv6 visit, when the computer in the IPv4 network of needs visit only can provide IPv4 to serve; Through the domain name conversion, the IPv6 domain name record of mapping is provided.When any IPv4 host access on the global ip v4 the Internet is positioned at the IPv6 computer of garden net, go out the corresponding IPv4 address of this IPv6 address through the generation of IVI transformation rule through domain name mapping.
(6) the IPv4/IPv6 grouping conversion method of employing two-stage transducers
The present invention adopts the method for secondary conversion, and the first order is a stateless IPv4/IPv6 address transition, is arranged on based on the carrier-class translation router of this method on the border of the single stack network of IPv6 and the IPv4 network interconnection of operator, has good expandability.The second level is the port mapping and the IPv6/IPv6 address transition (as shown in Figure 4) of minimum state, is arranged on the border of IPv6 garden net based on the garden net translation router of this method.The inventive method workflow is as shown in Figure 5.
Claims (3)
1. use the minimum state IPv4/IPv6 grouping conversion method of nonspecific IPv6 address, it is characterized in that, said method realizes in the Internet successively according to the following steps:
Step (1): initialization
Step (1.1): be divided into following two types to the IPv4 address:
First kind IPv4 address, the IPv4 address block to the use of IPv6 main frame is prepared by operator,
Second type of IPv4 address, the IPv4 address in the whole world wherein contains said operator oneself, and does not belong to the IPv4 address block of said IPv6 main frame,
Step (1.2): define following two types of coded formats:
Said first kind IPv4 address is adopted and is added the coded format that transport layer port embeds said IPv6 address to the IPv4 address, is called first kind coded format; Embedding 32 IPv4 addresses based on the 32+n position in the IPv6 address format of 32 cluster prefixs of operator; N is less than 32; Constitute the IVI prefix, embed address multiplex than M at the 96th to 111 simultaneously, embed port shift value k at the 112nd to 128; Wherein the value of k 0 and M-1 between, then fill complete 0 as spare bits is arranged between 64+n to 95; An IPv4 address can supply M IPv6 main frame to use through distinguishing transport layer port simultaneously,
The coded format that directly embeds the IPv4 address said IPv6 address is adopted in said first kind IPv4 address, is called second type of coded format; Embed 32 IPv4 addresses in said operator based on the 32+n position in the IPv6 address format of 32 cluster prefixs, n constitutes the IVI prefix less than 32, and spare bits fills complete 0 between 64+n to 128 simultaneously; Any addressable IPv4 main frame in the whole world can have an IPv6 address corresponding with it
Said two types of IVI addresses that are made up of above IVI prefix make to have unique, two-way mapping relations between the subclass of said IPv4 address and IPv6 address, form the IVI address translation rule;
Step (1.3): define following transport layer port mapping algorithm PCA, so that when the IPv6 main frame that adopts first kind of coded format is initiated communication, be mapped to the transport layer source port that produces at random by the described port range of said first kind coded format;
Get rid of 0-1024 port and other well-known port earlier; List the port mapping table that is allowed for the IPv6 main frame of said employing first kind coded format again,, be mapped to this mapping table to the transport layer source port that produces at random according to the request order; This type of follow-up grouping of monitoring in the time period of setting; So that when no longer including follow-up packet arrives, discharge the corresponding list item of said port mapping table, for future use;
Step (1.4): all IPv4 address converts IPv6 address block that the IPv6 address the obtains address pool as garden net translation router into according to first kind coded format in the first kind IPv4 address block that step (1.1) is distributed;
Step (1.5): the mapping table of initialization garden net translation router;
Step (1.6): the IPv6 main frame carries out the automatic configuration (for distinguishing IVI IPv6 address, hereinafter the IPv6 main frame is called " User IP v6 address " through the IPv6 address that SLAAC obtains in the garden net) of IPv6 address in the garden net through SLAAC.
Step (2): the IPv6 computer inquery domain name change server in the garden net,
Step (2.1): domain name change server inquiry IPv6 domain name record (AAAA Record), if any IPv6 domain name record execution in step (2.3), as there is not IPv6 domain name record, execution in step (2.2),
Step (2.2): domain name transfer gateway inquiry IPv4 domain name record (A Record), if any IPv4 domain name record, according to second type of coded format; Convert A Record into AAAA Record, as do not have IPv4 domain name record, produce the error messages of not finding the domain name record; Execution in step (2.4)
Step (2.3): the domain name change server returns IPv6 domain name record for the IPv6 computer in the garden
Step (2.4): receive IPv6 domain name record, as be error messages, stop to carry out, as obtain IPv6 domain name record, execution in step (3);
Step (3): the IPv6 computer in the garden net sends and divides into groups;
Step (4): garden net translation router receives IPv6 and divides into groups;
Step (4.1): judge whether destination address is the IVI address, as be the IVI address that execution in step (4.2) is not as being the IVI address, execution in step (4.6);
Step (4.2): destination address is constant, and target port is constant,
Whether step (4.3): searching in the mapping table of garden net translation router has and source address corresponding mapping table clauses and subclauses; If do not have then from address pool, take out the IVI IPv6 address of an available first kind coded format, set up the mapping table clauses and subclauses with source address;
Step (4.4):, be the IVI IPv6 address of first kind coded format from User IP v6 address transition with source address according to routing table entry;
Step (4.5): source port is done the PCA mapping,
Step (4.6): send IPv6 and divide into groups;
Step (5): the IPv4/IPv6 translation router of stateless carrier-class receives IPv6 and divides into groups;
Step (5.1): destination address converts the IPv4 address into by second type of coded format, and target port is constant,
Step (5.2): source address converts the IPv4 address into by first kind coded format, and source port is constant,
Step (5.3): press RFC2766 and carry out other handling procedure except that address transition;
Step (5.4): send IPv4 and divide into groups;
Step (6): the Target IP v4 computer on the Global Internet receives and divides into groups, and carries out corresponding computing;
Step (7): this IPv4 computer on the Global Internet sends the IPv6 computer that the present invention supported and divides into groups; Wherein source address is the IPv4 address of IPv4 computer, and destination address is the IPv4 mirror image address (promptly be embedded in IPv4 address in IVI IPv6 address) of the User IP v6 address of IPv6 computer through the IVI IPv6 address after the IPv6/IPv6 conversion;
Step (8): the IPv4/IPv6 translation router of stateless carrier-class receives IPv4 divides into groups,
Step (8.1): destination address converts the IPv6 address into by first kind coded format, and target port is constant
Step (8.2): source address converts the IPv6 address into by second type of coded format, and source port is constant,
Step (8.3): press RFC2766 and carry out other handling procedure except that address transition;
Step (8.4): send IPv6 and divide into groups to the single stack network of IPv6;
Step (9): garden net translation router receives IPv6 and divides into groups;
Step (9.1): judge whether source address is the IVI address, in this way, execution in step (9.2) is not as being execution in step (9.5);
Step (9.2): source address is constant, and source port is constant,
Whether step (9.3): searching in the mapping table of garden net translation router has and destination address corresponding mapping table clauses and subclauses, if not then packet discard; If have,, be User IP v6 address from the IVI IPv6 address transition of first kind coded format with destination address then according to routing table entry;
Step (9.4): target port is done the PCA mapping,
Step (9.5): send IPv6 and divide into groups execution in step (10);
Step (10): the IPv6 computer receives and divides into groups;
Step (11): return step (3).
2. according to the minimum state IPv4/IPv6 grouping conversion method that uses nonspecific IPv6 address in the claim 1; It is characterized in that; By describing of IPv4 computer initiation arbitrarily on the Global Internet, begin to carry out by step (7) with also can imitate above-mentioned steps by the step of the IPv6 compunication in the IPv6 network.
3. according to the minimum state IPv4/IPv6 grouping conversion method that uses nonspecific IPv6 address in the claim 1, it is characterized in that the function of carrier-class translation router and garden net translation router also can realize on an equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104158133A CN102594655A (en) | 2010-12-10 | 2011-12-09 | Minimum-state IPv4/IPv6 (Internet Protocol version 4/Internet Protocol version 6) packet conversion method using nonspecific IPv6 address |
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| WO2020032877A1 (en) * | 2018-08-08 | 2020-02-13 | Turkcell Teknoloji Arastirma Ve Gelistirme Anonim Sirketi | An architecture for managing ipv4 based customer premisses equipments through ipv6 |
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| CN101431477A (en) * | 2008-12-17 | 2009-05-13 | 清华大学 | P2P operator and campus network router combined IPv4/IPv6 grouping conversion method |
| CN101610295A (en) * | 2009-07-17 | 2009-12-23 | 清华大学 | Use the stateless IPv4/IPv6 grouping conversion method of nonspecific IPv6 address |
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| CN101431477A (en) * | 2008-12-17 | 2009-05-13 | 清华大学 | P2P operator and campus network router combined IPv4/IPv6 grouping conversion method |
| CN101610295A (en) * | 2009-07-17 | 2009-12-23 | 清华大学 | Use the stateless IPv4/IPv6 grouping conversion method of nonspecific IPv6 address |
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| WO2020032877A1 (en) * | 2018-08-08 | 2020-02-13 | Turkcell Teknoloji Arastirma Ve Gelistirme Anonim Sirketi | An architecture for managing ipv4 based customer premisses equipments through ipv6 |
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