CN102098355A - Cloud service-based IPv6 (internet protocol version 6)/IPv4 (internet protocol version 4) translation method with communication initiated by IPv6 party - Google Patents
Cloud service-based IPv6 (internet protocol version 6)/IPv4 (internet protocol version 4) translation method with communication initiated by IPv6 party Download PDFInfo
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Abstract
The invention provides a cloud service-based IPv6 (internet protocol version 6)/IPv4 (internet protocol version 4) translation method with communication initiated by an IPv6 party, and relates to the technical field of a computer network. The method is used for realizing the service that an IPv6 user or a dual-stack user can seamlessly initiate the information resource for accessing the IPv4; a cloud service data center is provided with an information resource data base, a domain name analysis server, a stateless IPv4/IPv6 translator and a stateful IPv6/IPv6 translator, wherein the stateless IPv4/IPv6 translator and the stateful IPv6/IPv6 are connected with each other in series; a translation algorithm of the stateless IPv4/IPv6 translator is used for translating an IPv4 address which is reserved for accessing a pure IPv4 server from an IPv6 network into a special IPv6 address which is embedded with the IPv4 address and uses an operator prefix; a translation algorithm of the stateful IPv6/IPv6 is used for dynamically mapping any IPv6 addresses of the user into the special IPv6 address which is embedded with the IPv4 address; and the domain name analysis server is used for answering a domain name analysis request of the user, and returning an A record or an AAAA record for the user according to the content of an information resource data base, therefore, the pure IPv4 user of the dual-stack user can initiate the information resource for accessing the pure IPv4 by the IPv6.
Description
Technical field
The present invention relates to technical field of the computer network, particularly a kind of IPv4/IPv6 interpretation method by the initiation communication of IPv6 side based on cloud service.
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, i.e. 4,300,000,000 addresses, the IPv4 address is about to assign at present.
The absolute number of present Chinese netizen population has become the first in the world, but the popularity rate of the Internet has only 30%, 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.She Ji theory 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 translation and protocol translation are the methods that solution IPv4 and IPv6 interconnect, as the NAT-PT (RFC2766) that defines in the ietf standard, but NAT-PT is based on the interpretation method of state, poor expandability, be classified as historical standard, give way for expecting better IPv4/IPv6 transition and coexistence standard by IETF.
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 from stateless (or minimum state) the address prefix IPv4/IPv6 transitional technology IVI of IPv4 to the two-way initiation visit of IPv6.
But, in the process that IPv6 promotes, also have three contradictions to need to solve:
1, the decoupling problem of IPv6 networking and IPv6 construction of information resources.Operator waits for the scale of IPv6 information resources, the Large scale construction of just making a strategic decision IPv6 network, development IPv6 user; Information resources provider waits for that IPv6 user reaches certain scale and just determines constructing IP v6 information resources.
2, the problem of IPv6 network performance.Because the enforcement of technology such as tunnel, particularly automatic tunnel, the performance of whole world IPv6 the Internet also has very big gap than the performance of IPv4 the Internet.Under the condition that the IPv6 technology is also not exclusively ripe at present, switch to IPv6, can bring the decline of user experience.
3, the address configuration problem of main frame.The IPv6 address has or not state assignment, and state assignment etc. is arranged, and a main frame may distribute a plurality of IPv6 address, and the structure of adding two stacks relates to publicly-owned IPv4 address or private ip v4 address.Therefore, be great challenge for the user provides suitable network service.
Cloud computing provides opportunity for solving above-mentioned three big problems.Utilize IPv4/IPv6 translation cloud service to provide seamless access to have the IPv4 information resources now, also provide seamless access IPv6 information resources for IPv4 user for IPv6 user provides service.Determine the deployment of translater according to the scale of translate requirements, do not carry out the IPv6 upgrading and do not need operator or information resources provider to drop into deployment facility in advance.IPv4/IPv6 translation cloud service can utilize the characteristics of centralized services, measures for the performance of IPv6 network, and whether decision provides the IPv6 translation service; Can also be according to user's situation, whether decision provides the IPv6 translation service.Therefore, be badly in need of a kind of IPv4/IPv6 interpretation method that utilizes cloud service, realize between IPv4 user and the IPv6 user the seamless access of information resources separately.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is: how to realize between IPv4 user and the IPv6 user the seamless access of information resources separately.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of IPv4/IPv6 interpretation method by the initiation communication of IPv6 side based on cloud service, this method is passed through at IPv4/IPv6 dual stack network deploy information resource database and domain name resolution server, and the stateless IPv4/IPv6 translater of serial connection is realized with the IPv6/IPv6 translater that state is arranged, the tabulation of storing IP v4 server address in the described information resource database, and storage is through the IPv6 user's of information resource database mandate address list, described information resource database, domain name resolution server, IPv4/IPv6 translater and IPv6/IPv6 translater all store special IPv6 address field, described special IPv6 address field is: the address field that forms in the IPv6 prefix in one of them IPv4 address field of several that will reserve publicly-owned IPv4 address or private ip v4 address field several publicly-owned IPv6 prefixes that embedding is reserved according to RFC6052
Said method comprising the steps of:
S1: use arbitrary common IPv6 address user computer inquery domain name resolution server, domain name and information resource database that domain name resolution server is inquired about according to user's source address and needs are mutual, if this IPv6 user is the authorized user in the information resource database, and the IPv4 server that the domain name that needs inquiry is represented is also in described information resource database, then return by this IPv4 server address and embed the IPv6 prefix and the IPv6 address of the AAAA record description of the special IPv6 address correspondence of this IPv4 server of expression of forming, otherwise, return the IPv4 address of A record description;
S2: use described common IPv6 address user computer to send the IPv6 grouping, these groupings are defined as first kind IPv6 grouping, and according to the IPv6 Routing Protocol, this grouping will send to described IPv6/IPv6 translater;
The S3:IPv6/IPv6 translater receives described first kind IPv6 grouping;
The S4:IPv6/IPv6 translater is inquired about dynamic mapping table, if the source address of first kind IPv6 grouping is not in mapping table, then select still untapped, a described special IPv6 address and this source address to set up mapping relations, form map entry, start timer, if overtime, delete this map entry; Execution in step S6;
S5: if the source address of described first kind IPv6 grouping in mapping table, is then used these mapping relations, execution in step S6;
The S6:IPv6/IPv6 translater is translated as the special IPv6 address of setting up mapping relations to the source address of first kind IPv6 grouping, and source port is constant; Destination address is constant, and target port is constant, recomputate the transport layer verification and, form second class IPv6 grouping;
The S7:IPv6/IPv6 translater is passed to the IPv4/IPv6 translater to the second class IPv6 grouping after translating;
The S8:IPv4/IPv6 translater receives second class IPv6 grouping;
The S9:IPv4/IPv6 translater is translated second class IPv6 grouping according to RFC6145, becomes the IPv4 grouping after the translation;
The S10:IPv4/IPv6 translater sends described IPv4 grouping;
The S11:IPv4 server receives described IPv4 grouping;
The S12:IPv4 server sends described IPv4 grouping;
The S13:IPv4/IPv6 translater receives described IPv4 grouping;
The S14:IPv4/IPv6 translater is translated described IPv4 grouping according to RFC6145, is translated as second class IPv6 grouping;
The S15:IPv4/IPv6 translater is passed to the IPv6/IPv6 translater to second class IPv6 grouping;
The S16:IPv6/IPv6 translater receives second class IPv6 grouping;
The S17:IPv6/IPv6 translater is inquired about dynamic mapping table, if the source address of second class IPv6 grouping then abandons this grouping not in mapping table, returns;
S18: if the source address of second class IPv6 grouping in mapping table, is then used these mapping relations, execution in step S19;
The S19:IPv6/IPv6 translater is translated as the common IPv6 address of setting up mapping to the destination address of second class IPv6 grouping, and target port is constant; Source address is constant, and source port is constant, recomputate the transport layer verification and, form first kind IPv6 grouping;
The S20:IPv6/IPv6 translater sends first kind IPv6 grouping;
S21: user's computer receives first kind IPv6 grouping, returns S2, finishes until this process.
Wherein, described IPv6/IPv6 translater and IPv4/IPv6 translater are deployed on same the equipment.
(3) beneficial effect
The present invention is by setting up information resource database and domain name resolution server in data center, set up the stateless IPv4/IPv6 translater of serial connection and the IPv6/IPv6 translater by information resource database configuration simultaneously, realized between IPv4 user and the PIv6 user the seamless access of information resources separately.
Description of drawings
Fig. 1 realizes of the present inventionly initiating a kind of system construction drawing of the IPv4/IPv6 interpretation method of communication based on cloud service by IPv6 side;
Fig. 2 is a kind of IPv4/IPv6 interpretation method by the initiation communication of IPv6 side based on cloud service of the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
The system configuration of realization the inventive method at IPv4/IPv6 dual stack network deploy information resource database and domain name resolution server, is set up the stateless IPv4/IPv6 translater and the IPv6/IPv6 translater that state is arranged of serial connection as shown in Figure 1 simultaneously.In described information resource database, set up and to be the address list of the IPv4 server of IPv6 user's service.In described information resource database, set up the address list of authorizing, will be provided the IPv6 user of translation cloud service.Cloud service provider reserves some publicly-owned IPv4 address fields or private ip v4 address field, as the IPv4 address field that is used for translation service.Cloud service provider reserves several publicly-owned IPv6 prefixes, for each publicly-owned IPv6 address prefix, select one section described publicly-owned IPv4 address field or private ip v4 address field, a described IPv4 address field is embedded in the above-mentioned IPv6 prefix according to RFC6052, form some special IPv6 address fields.In above-mentioned parameter writing information resource database, domain name resolution server, IPv4/IPv6 translater and IPv6/IPv6 translater.Wherein, IPv4/IPv6 translater and IPv6/IPv6 translater can be deployed in the same equipment.
Method idiographic flow of the present invention comprises as shown in Figure 2:
Step S101, use arbitrary IPv6 address user computer inquery domain name resolution server, domain name and information resource database that domain name resolution server is inquired about according to user's source address and needs are mutual, if this IPv6 user is the authorized user in the information resource database, and the IPv4 server that the domain name that needs inquiry is represented is also in described information resource database, then return the IPv6 address of the special IPv6 address correspondence of this IPv4 server of expression that forms by this IPv4 server address embedding IPv6 prefix, it is the AAAA record, otherwise, return the IPv4 server address, be the A record, this moment is the IPv4 flow processing routinely.
Step S102 uses arbitrary IPv6 address user computer to send the IPv6 grouping, is defined as first kind IPv6 grouping, and according to the IPv6 Routing Protocol, this grouping will send to described IPv6/IPv6 translater.
Step S103, IPv6/IPv6 translater receive described first kind IPv6 grouping.
Step S104, the IPv6/IPv6 translater is inquired about dynamic mapping table, if the source address of first kind IPv6 grouping is not in mapping table, then select still untapped, a described special IPv6 address to set up mapping relations, form map entry, start timer, as overtime, delete this map entry; Execution in step S105; If the source address of described first kind IPv6 grouping in mapping table, is then used these mapping relations, execution in step S105.
Step S105, the IPv6/IPv6 translater is translated as the special IPv6 address of setting up mapping relations to the source address of first kind IPv6 grouping, and source port is constant; Destination address is constant, and target port is constant, recomputate the transport layer verification and, form second class IPv6 grouping.
Step S106, the IPv6/IPv6 translater is passed to the IPv4/IPv6 translater to the second class IPv6 grouping after translating, and the IPv4/IPv6 translater receives second class IPv6 grouping.
Step S107, the IPv4/IPv6 translater is translated second class IPv6 grouping according to RFC6145, translates into the IPv4 grouping.
Step S108, IPv4/IPv6 translater send described IPv4 grouping.
Step S109, IPv4 server receive described IPv4 grouping.
Step S110, IPv4 server send described IPv4 grouping.
Step S111, IPv4/IPv6 translater receive described IPv4 grouping.
Step S112, the IPv4/IPv6 translater is translated as second class IPv6 grouping according to the RFC6145 translation IPv4 of institute grouping, and the IPv4/IPv6 translater is passed to the IPv6/IPv6 translater to second class IPv6 grouping.
Step S113, IPv6/IPv6 translater receive second class IPv6 grouping.
Step S114, the IPv6/IPv6 translater is inquired about dynamic mapping table, if the source address of second class IPv6 grouping then abandons this grouping not in mapping table, returns; If the source address of second class IPv6 grouping in mapping table, is then used these mapping relations, execution in step 115.
Step S115, the IPv6/IPv6 translater is translated as any IPv6 address of setting up mapping to the destination address of second class IPv6 grouping, and target port is constant; Source address is constant, and source port is constant, recomputate the transport layer verification and, form first kind IPv6 grouping.
Step S116, IPv6/IPv6 translater send first kind IPv6 grouping.
Step S117, user receive first kind IPv6 grouping, return S102, finish until this process.
With an object lesson the present invention is described below:
It is 2001:da8:e64: that cloud service provider reserves a publicly-owned IPv6 prefix :/48, reserving one section IPv4 address field that is used to share is 202.38.102.64/26, then according to the definition of RFC6052, the scope that embeds the IPv6 address of above-mentioned IP v4 address field is 2001:da8:e64:ca26:6640:: to 2001:da8:e64:ca26:667f::.If take 202.38.102.117 in above-mentioned reservation address field, the special IPv6 address that has then embedded this IPv4 address is 2001:da8:e64:ca26:6675::.
The common IPv6 address of initiating the IPv6 main frame of communication is 2001:da8:aaae::201, destination address is IPv4 server address 121.194.0.203, then the special IPv6 destination address represented in IPv6 of this IPv4 server that obtains according to RFC6052 is 2001:da8:e64:79c2:d2::, confirm that 2001:da8:aaae::201 and 121.194.0.203 all are the IPv6 station address and the IPv4 server address of authorizing.
The first kind IPv6 that is grouped into that sends according to above-mentioned parameter IPv6 main frame divides into groups, this grouping is by the IPv6/IPv6 translater, found mapping table, then source address 2001:da8:aaae::201 is mapped as an above-mentioned special IPv6 address 2001:da8:e64:ca26:6675::, destination address is constant, form second class IPv6 grouping, its destination address is 2001:da8:e64:79c2:d2::, source address is 2001:da8:e64:ca26:6675::.Give IPv4/IPv6 translater.Through behind the IPv4/IPv6 translater, form the IPv4 grouping, its destination address is 121.194.0.203, source address is 202.38.102.117, can with the IPv4 server communication.
The IPv4 grouping destination address of returning is 202.38.102.117, source address is 121.194.0.203, through forming second class IPv6 grouping behind the IPv4/IPv6 translater, its destination address is 2001:da8:e64:ca26:6675::, source address is 2001:da8:e64:79c2:d2::, through forming first kind IPv6 grouping behind the IPv6/IPv6 translater, its destination address is 2001:da8; Aaae::201, source address is 2001:da8:e64:79c2:d2::.Can with the IPv6 main-machine communication.This process carries out finishing up to communication repeatedly.
Above execution mode only is used to illustrate the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; under the situation that does not break away from the spirit and scope of the present invention; can also make various variations and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (2)
1. IPv4/IPv6 interpretation method of initiating communication by IPv6 side based on cloud service, it is characterized in that, this method is passed through at IPv4/IPv6 dual stack network deploy information resource database and domain name resolution server, and the stateless IPv4/IPv6 translater of serial connection is realized with the IPv6/IPv6 translater that state is arranged, the tabulation of storing IP v4 server address in the described information resource database, and storage is through the IPv6 user's of information resource database mandate address list, described information resource database, domain name resolution server, IPv4/IPv6 translater and IPv6/IPv6 translater all store special IPv6 address field, described special IPv6 address field is: each IPv4 address field of several that will reserve publicly-owned IPv4 address or private ip v4 address field provides the demand of service according to service provider, according to the mode of stipulating among the RFC6052, embed respectively form in several publicly-owned IPv6 prefixes of different reservations add the IPv6 address field of the publicly-owned of reservation or private ip v4 address by certain publicly-owned IPv6 prefix
Said method comprising the steps of:
S1: use arbitrary common IPv6 address user computer inquery domain name resolution server, domain name and information resource database that domain name resolution server is inquired about according to user's source address and needs are mutual, if this IPv6 user is the authorized user in the information resource database, and the IPv4 server that the domain name that needs inquiry is represented is also in described information resource database, then return by this IPv4 server address and embed the IPv6 prefix and the IPv6 address of the AAAA record description of the special IPv6 address correspondence of this IPv4 server of expression of forming, otherwise, return the IPv4 address of A record description;
S2: use described common IPv6 address user computer to send the IPv6 grouping, these groupings are defined as first kind IPv6 grouping, and according to the IPv6 Routing Protocol, this grouping will send to described IPv6/IPv6 translater;
The S3:IPv6/IPv6 translater receives described first kind IPv6 grouping;
The S4:IPv6/IPv6 translater is inquired about dynamic mapping table, if the source address of first kind IPv6 grouping is not in mapping table, then select still untapped, a described special IPv6 address and this source address to set up mapping relations, form map entry, start timer, if overtime, delete this map entry; Execution in step S6;
S5: if the source address of described first kind IPv6 grouping in mapping table, is then used these mapping relations, execution in step S6;
The S6:IPv6/IPv6 translater is translated as the special IPv6 address of setting up mapping relations to the source address of first kind IPv6 grouping, and source port is constant; Destination address is constant, and target port is constant, recomputate the transport layer verification and, form second class IPv6 grouping;
The S7:IPv6/IPv6 translater is passed to the IPv4/IPv6 translater to the second class IPv6 grouping after translating;
The S8:IPv4/IPv6 translater receives second class IPv6 grouping;
The S9:IPv4/IPv6 translater is translated second class IPv6 grouping according to RFC6145, becomes the IPv4 grouping after the translation;
The S10:IPv4/IPv6 translater sends described IPv4 grouping;
The S11:IPv4 server receives described IPv4 grouping;
The S12:IPv4 server sends described IPv4 grouping;
The S13:IPv4/IPv6 translater receives described IPv4 grouping;
The S14:IPv4/IPv6 translater is translated described IPv4 grouping according to RFC6145, is translated as second class IPv6 grouping;
The S15:IPv4/IPv6 translater is passed to the IPv6/IPv6 translater to second class IPv6 grouping;
The S16:IPv6/IPv6 translater receives second class IPv6 grouping;
The S17:IPv6/IPv6 translater is inquired about dynamic mapping table, if the source address of second class IPv6 grouping then abandons this grouping not in mapping table, returns;
S18: if the source address of second class IPv6 grouping in mapping table, is then used these mapping relations, execution in step S19;
The S19:IPv6/IPv6 translater is translated as the common IPv6 address of setting up mapping to the destination address of second class IPv6 grouping, and target port is constant; Source address is constant, and source port is constant, recomputate the transport layer verification and, form first kind IPv6 grouping;
The S20:IPv6/IPv6 translater sends first kind IPv6 grouping;
S21: user's computer receives first kind IPv6 grouping, returns S2, finishes until this process.
2. the IPv4/IPv6 interpretation method by the initiation communication of IPv6 side based on cloud service as claimed in claim 1 is characterized in that described IPv6/IPv6 translater and IPv4/IPv6 translater are deployed on same the equipment.
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| US10952228B2 (en) | 2018-03-09 | 2021-03-16 | Tsinghua University | Traffic scheduling and processing method, user side translator and core translator |
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