CN107547669A - A kind of method for network address translation device - Google Patents
A kind of method for network address translation device Download PDFInfo
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- CN107547669A CN107547669A CN201610474559.7A CN201610474559A CN107547669A CN 107547669 A CN107547669 A CN 107547669A CN 201610474559 A CN201610474559 A CN 201610474559A CN 107547669 A CN107547669 A CN 107547669A
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Abstract
The invention provides method for network address translation to include, obtain IP datagram text, extraction needs the IPV4 network address changed from the message, the IPV4 network address is converted into IPV6 network address according to pre-defined rule, the IPV6 network address includes physical address information, IPV4 network address in message is replaced with into the IPV6 network address and forwarded, at least to need message deblocking being attached to IP layers in the prior art, cause forward efficiency low, the problem of each shared IPv4 addresses support number is limited, and the cost that causes to arrange net improves.
Description
Technical field
The present invention relates to communication and computer realm, more particularly to method for network address translation is device.
Background technology
Fourth edition (Internet Protocol Version 4, hereinafter referred to as IPv4) class business of Internet protocol is rich
Richness, although part to Internet protocol sixth version (Internet Protocol Version 6, hereinafter referred to as
IPv6) transition, but IPv4 user is still huger, in order to solve IPv4overIPv6 scene, if being formed
The dry transitional technology for IPv4overIPv6 scenes, Light weight 4over6 and DSLite are exactly therein
Two kinds.Lightweight 4over6 are the modified versions of DS-Lite technologies, and greatest improvement is exactly by NAT44
Customer terminal equipment (Customer Premise are transferred in (Network Adress Transfer 44) conversion
Equipment, hereinafter referred to as CPE), and the IPv4 addresses of tunnel distributing are shared, and its principle is CPE
NAT44 conversion is first completed, then goes to access IPv4 business by IPv6 networks after encapsulating IPv6 headings.For
Solve in the case where IPv4 addresses are shared, the problem of how different users distinguishes, the technology is by each CPE points
Method with unique 16 PSID (Port Set Identification) makes a distinction, but existing skill
Art needs message deblocking being attached to IP layers, causes forward efficiency low, simultaneously as PSID only has 16, one altogether
It is limited with IPv4 addresses support number, cause cost raising of arranging net, needed when changing IPv6 addresses because of digit deficiency
Zero padding, causes troublesome in poeration, for problem above, not yet proposes effective solution at present.
The content of the invention
The invention provides method for network address translation and device, and IP layers are attached at least to need to unseal message in the prior art,
Cause forward efficiency low, the problem of each shared IPv4 addresses support number is limited, and the cost that causes to arrange net improves.
According to an aspect of the present invention, there is provided a kind of method for network address translation, this method include, and obtain IP datagram text,
Extraction needs the IPV4 network address changed from the message, and the IPV4 network address is converted into according to pre-defined rule
IPV6 network address, the IPV6 network address include physical address information, and IPV4 network address in message is replaced with into institute
State IPV6 network address and forward.
Further, the IPV6 network address also includes port identity information.
Further, physical address information and the IPV4 network address are being combined into IPV6 network address according to certain rule
Before, methods described also includes, to dynamic address configuration server acquisition request information of address conversion；Receive dynamic address configuration
The information of address conversion of server response；
Further, the IPV4 network address is converted into IPV6 network address according to pre-defined rule includes, by the address
Transitional information, port identity information and physical address information are combined into IPV6 addresses.
Further, this method also includes, and receives the network message for including IPV6 addresses, is extracted physically according to pre-defined rule
Location information simultaneously forwards the network message according to the physical address information.
According to another aspect of the present invention, a kind of network address conversion device is additionally provided, the device includes, extraction module, uses
In obtaining IP datagram text, the IPV4 network address for needing to change, modular converter, for by described in are extracted from the message
IPV4 network address is converted into IPV6 network address according to pre-defined rule, and the IPV6 network address includes physical address information,
Forwarding module, IPV4 network address in message is replaced with into the IPV6 network address and forwarded.
Further, the IPV6 network address also includes port identity information.
Further, described device also includes, data obtaining module, to dynamic address configuration server acquisition request address conversion
Information；Information receiving module, receive the information of address conversion that dynamic address configuration server is responded；
Further, the modular converter is additionally operable to, by the information of address conversion, port identity information and physical address information
It is combined into IPV6 addresses.
Further, the forwarding module is additionally operable to, and is received the network message for including IPV6 addresses, is extracted according to pre-defined rule
Physical address information simultaneously forwards the network message according to the physical address information.
The present invention introduce CPE own MAC address and PSID are combined into an IPv6 address by specific format by way of,
Solving needs message deblocking being attached to IP layers, causes forward efficiency low, and each shared IPv4 addresses support number is limited, leads
Cause arrange net cost improve the problem of.So as to reduce lifting forward efficiency, cost of arranging net is reduced.
Brief description of the drawings
Fig. 1 is method for network address translation flow chart according to embodiments of the present invention；
Fig. 2 is network address conversion device structured flowchart one according to embodiments of the present invention；
Fig. 3 is network address conversion device structured flowchart two according to embodiments of the present invention；
Fig. 4 is the network address structure chart of the embodiment of the present invention；
Fig. 5 is the address conversion and the comprehensive schematic diagram of message forwarding of embodiments of the invention；
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in situation about not conflicting
Under, the feature in embodiment and embodiment in the application can be mutually combined.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.
According to an aspect of the present invention, there is provided a kind of method for network address translation, Fig. 1 are networks according to embodiments of the present invention
Address conversion method flow chart, as shown in figure 1, this method includes
S102：IP datagram text is obtained, the IPV4 network address that extraction needs are changed from the message,
S104：The IPV4 network address is converted into IPV6 network address, the IPV6 network address according to pre-defined rule
Comprising physical address information,
S106：IPV4 network address in message is replaced with into the IPV6 network address and forwarded.
Further, the IPV6 network address also includes port identity information, adds the reliability of IPv6 address conversions.
Further, physical address information and the IPV4 network address are being combined into IPV6 network address according to certain rule
Before, to dynamic address configuration server acquisition request information of address conversion；Receive the address that dynamic address configuration server is responded
Transitional information；
Further, the IPV4 network address being converted into IPV6 network address according to pre-defined rule can include, by described in
Information of address conversion, port identity information and physical address information are combined into IPV6 addresses.
Further, the network message for including IPV6 addresses is received, physical address information is extracted and according to institute according to pre-defined rule
State physical address information and forward the network message.
The embodiment of the present invention additionally provides a kind of network address conversion device, and Fig. 2 is that network address according to embodiments of the present invention turns
Changing device structured flowchart one, as shown in Fig. 2 the device includes：
Extraction module 22, for obtaining IP datagram text, the IPV4 network address for needing to change is extracted from the message；
Modular converter 24, for the IPV4 network address to be converted into IPV6 network address, the IPV6 according to pre-defined rule
Network address includes physical address information；
Forwarding module 26, IPV4 network address in message is replaced with into the IPV6 network address and forwarded.
Further, the IPV6 network address also includes port identity information.
Fig. 3 is network address conversion device structured flowchart two according to embodiments of the present invention, as shown in figure 3, described device is also wrapped
Include, data obtaining module 32, to dynamic address configuration server acquisition request information of address conversion；Information receiving module 34,
Receive the information of address conversion that dynamic address configuration server is responded；
Further, the modular converter is additionally operable to, by the information of address conversion, port identity information and physical address information
It is combined into IPV6 addresses.
The embodiment of the present invention additionally provides a kind of switch, comprising：Switching Module, for receiving the network report for including IPV6 addresses
Text, extract physical address information according to pre-defined rule and the network message is forwarded according to the physical address information.
The present invention is further described with a kind of specific embodiment of method for network address translation below：Before choosing CPE
Sew；If the prefix less than 64 to the right polishing to 64；If the prefix less than 64 to the right polishing to 64；Choose CPE
Some MAC Address (48) using " prefix (64)+MAC (48)+PSID (16) " forms
It is assembled into the GUA addresses of 128.Fig. 4 is the network address structure chart of the embodiment of the present invention, GUA as shown in Figure 4
Location.The address be able to can also be used for encapsulating IPv6 headings generation channel message as the IPv6 addresses in LW4o6 tunnels,
Fig. 5 is the address conversion and the comprehensive schematic diagram of message forwarding of embodiments of the invention, as shown in figure 5, this method is not only straight
Connect the source IP v6 addresses for using the IPv6 addresses generated as channel message encapsulated message head；Also directly use what is got
Purpose IPv6 addresses of the br-ipv6-address (lwAFTR/BR IPv6 addresses) as channel message encapsulated message head；
In the case where CPE shares IPv4 addresses, lwAFTR/BR can be by the source IP v6 addresses of channel message head
MAC+P sections distinguish different CPE users, the establishment of switch charge tunnel, the envelope of channel message in the present embodiment
The related operations in tunnel such as dress/decapsulation and forwarding, and two layers are directly carried out to message using MAC Address and is forwarded.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general computing devices come real
Existing, they can be concentrated on single computing device, or are distributed on the network that multiple computing devices are formed, and alternatively, they can
To be realized with the executable program code of computing device, it is thus possible to be stored in storage device by computing device to perform, and
And in some cases, can be with the step shown or described by being performed different from order herein, or they are fabricated to each collection respectively
Single integrated circuit module is fabricated to realize into circuit module, or by the multiple modules or step in them.So, the present invention does not limit
Combined in any specific hardware and software.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for those skilled in the art, this
Invention can have various modifications and variations.Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc.,
It should be included in the scope of the protection.
Claims (10)
1. a kind of method for network address translation, it is characterised in that this method includes：
IP datagram text is obtained, the IPV4 network address that extraction needs are changed from the message；
The IPV4 network address is converted into IPV6 network address according to pre-defined rule, the IPV6 network address includes physical address information；
IPV4 network address in message is replaced with into the IPV6 network address and forwarded.
2. according to the method for claim 1, it is characterised in that the IPV6 network address also includes port identity information.
3. according to the method for claim 2, it is characterised in that before physical address information and the IPV4 network address are combined into IPV6 network address according to certain rule, methods described also includes：
To dynamic address configuration server acquisition request information of address conversion；
Receive the information of address conversion that dynamic address configuration server is responded.
4. according to the method for claim 3, it is characterised in that the IPV4 network address is converted into IPV6 network address according to pre-defined rule includes：
The information of address conversion, port identity information and physical address information are combined into IPV6 addresses.
5. according to the method for claim 1, it is characterised in that this method also includes：
The network message for including IPV6 addresses is received, physical address information is extracted according to pre-defined rule and the network message is forwarded according to the physical address information.
6. a kind of network address conversion device, it is characterised in that the device includes：
Extraction module, for obtaining IP datagram text, the IPV4 network address for needing to change is extracted from the message；
Modular converter, for the IPV4 network address to be converted into IPV6 network address according to pre-defined rule, the IPV6 network address includes physical address information；
Forwarding module, IPV4 network address in message is replaced with into the IPV6 network address and forwarded.
7. device according to claim 6, it is characterised in that the IPV6 network address also includes port identity information.
8. device according to claim 7, it is characterised in that described device also includes：
Data obtaining module, to dynamic address configuration server acquisition request information of address conversion；
Information receiving module, receive the information of address conversion that dynamic address configuration server is responded.
9. device according to claim 8, it is characterised in that the modular converter is additionally operable to：
The information of address conversion, port identity information and physical address information are combined into IPV6 addresses.
10. device according to claim 6, it is characterised in that forwarding module is additionally operable to receive the network message for including IPV6 addresses, extracts physical address information according to pre-defined rule and forwards the network message according to the physical address information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610474559.7A CN107547669A (en) | 2016-06-24 | 2016-06-24 | A kind of method for network address translation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610474559.7A CN107547669A (en) | 2016-06-24 | 2016-06-24 | A kind of method for network address translation device |
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| CN107547669A true CN107547669A (en) | 2018-01-05 |
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| CN201610474559.7A Pending CN107547669A (en) | 2016-06-24 | 2016-06-24 | A kind of method for network address translation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404878A (en) * | 2020-02-26 | 2020-07-10 | 新浪网技术(中国)有限公司 | Method and system for converting ipv4 address into ipv6 address |
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2016
- 2016-06-24 CN CN201610474559.7A patent/CN107547669A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404878A (en) * | 2020-02-26 | 2020-07-10 | 新浪网技术(中国)有限公司 | Method and system for converting ipv4 address into ipv6 address |
| CN111404878B (en) * | 2020-02-26 | 2022-06-24 | 新浪网技术(中国)有限公司 | Method and system for converting ipv4 address into ipv6 address |
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Application publication date: 20180105 |