CN101227408A - Method for IPv4 internal private network to visit IPv6 network and router thereof - Google Patents
Method for IPv4 internal private network to visit IPv6 network and router thereof Download PDFInfo
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- CN101227408A CN101227408A CNA2008100575041A CN200810057504A CN101227408A CN 101227408 A CN101227408 A CN 101227408A CN A2008100575041 A CNA2008100575041 A CN A2008100575041A CN 200810057504 A CN200810057504 A CN 200810057504A CN 101227408 A CN101227408 A CN 101227408A
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Abstract
The invention discloses a method of visiting IPv6 network with personal network in IPv4, which comprises starting a boundary route between personal network in IPv4 and IPv6 network, achieving NAT-PT function, allocating IPv4 address of a host machine of IPv6 network in the IPv4 network according to relative transformation rule and condition, allocating IPv6 address of a host machine of personal network in IPv4 in the IPv6 network, when the host machine of the personal network in IPv4 sends message visit to the host machine of IPv6 network, and when the host machine of the IPV6 network returns response message to the host machine of the personal network in IPv4, achieving the exchange of destination address and origin address of each message between IPv4 address and IPv6 address. The invention also discloses a boundary route. The invention enables a host machine of personal network in IPv4 to directly visit a host machine of IPv6 network, which is easy to realize.
Description
Technical field
The present invention relates to the data communication field, relate in particular to the inner private network of a kind of IPv4 is directly visited the IPv6 network by NAT-PT method and router.
Background technology
At present, along with the fast development of network, the IPv4 network exposes increasing problem, as the shortage of IPv4 address, and the expansion of routing table, safety issue or the like, thus need a kind of new network type to satisfy the later development of Internet network.Founded the IPv6 standard so far from 1992, the standards system of IPv6 is perfect substantially, has promoted IPv6 and has moved towards real network from the laboratory.Turned in the middle of application explores from theoretical aspect for the research of IPv6, thereby further promoted the development of IPv6 technology, it can effectively solve the problem that IPv4 exists.But, need certain transient period because the large-scale application of IPv4 network at present will convert thereof into the IPv6 network.In this transient period, IPv4 network and IPv6 network will coexist over a period to come, solve the problem that communicates with one another between them, NAT-PT (Network Address Translation-Protocol Translation, network address translation one protocol conversion) is a good treatment mechanism.
NAT (Network Address Translation, network address translation) is a solution that proposes at IPv4 address shortage problem, has obtained large-scale utilization.Its basic principle is to use privately owned address in network internal, in the finish dealing with correspondence visit relation of privately owned address and external address of NAT device.The NAT technology is a kind of map addresses technology, when being generally used for having the internal network host access external public network main frame of private IP address, the private IP address of this main frame is mapped as unique discernible global I Pv4 address; Simultaneously, the global I Pv4 map addresses that the main frame in the external network is returned to inner private network main frame is returned the private IP address of inner this main frame, makes the packet that returns can correctly arrive inner private network main frame.The NAT-PT technology is a kind of AARP switch technology that is similar to NAT technology in the IPv4 network, the switch technology that it relates to is conversion between IPv6 and IPv4 address and the conversion between IPv6 and the IPv4 agreement, can either satisfy the communication of IPv6 network and IPv4 network, use the NAT realization mechanism of IPv4 network simultaneously, can effectively save IPv4 address in short supply.
Be mainly used in communication between IPv4 public network and the IPv6 network at present NAT-PT.And in the IPv4 of reality network environment, have a lot of IPv4 private network, and as some enterprises, school etc., they carry out address assignment with the privately owned address of three classes of following RFC1918 regulation;
10.0.0.0-10.255.255.255；
172.16.0.0-172.31.255.255；
192.168.0.0-192.168.255.255。
This privately owned address of three classes is not unique in the IPv4 network, can not route in the IPv4 public network.When having these address of host and will visit the IPv4 public network, need carry out the NAT mechanism transformation and become unique routable global I Pv4 address.But the main frame of these inner private networks can not directly be visited the IPv6 network, thereby certain limitation is arranged.
In summary, the technology of prior art IPv4 internal private network to visit IPv 6 network obviously exists inconvenience and defective, so be necessary to be improved on reality is used.
Summary of the invention
At above-mentioned defective, the object of the present invention is to provide a kind of IPv4 internal private network to visit IPv 6 network method and router, be configured by border router, make the main frame of the inner private network of IPv4 can directly visit the main frame of IPv6 network at inner private network of IPv4 and IPv6 network.
To achieve these goals, the invention provides a kind of method of IPv4 internal private network to visit IPv 6 network, be applied to comprise the integrated network system of inner private network of IPv4 and IPv6 network composition, be provided with a border router between described two networks, described method comprises that step has:
A, described border router start and realize the NAT-PT function, and the Ipv4 address of main frame in the Ipv4 network that disposes the Ipv6 network by corresponding transformation rule and condition, and the IPv6 address of main frame in the IPv6 network of the inner private network of configuration of IP v4;
The main frame of the inner private network of B, described IPv4 is initiated the message visit by this border router to the main frame of an IPv6 network, after described border router converted the Ipv4 destination address in this message and an Ipv4 source address to an IPv6 destination address and an IPv6 source address respectively, the message that will change sent to the main frame of described IPv6 network again;
The main frame of C, described IPv6 network is handled after receiving this message, if need response, then response message is sent to described border router, after described border router converted the 2nd IPv6 destination address in this response message and the 2nd IPv6 source address to the 2nd Ipv4 destination address and the 2nd Ipv4 source address respectively, the response message that will change was issued the main frame of the inner private network of described IPv4 again.
The method according to this invention, the Ipv4 address of main frame in the Ipv4 network that disposes or obtain the Ipv6 network by DNS-ALG by static rule in the described steps A; And/or
Come the IPv6 address of main frame in the IPv6 network of the inner private network of configuration of IP v4 in the described steps A by static rule, dynamic programming or prefixing.
The method according to this invention, the main frame of the inner private network of IPv4 is initiated message visit by border router to the main frame of this IPv6 network according to this IPv4 address then by the IPv4 address of the main frame of this IPv6 network of DNS-ALG conversion acquisition among the described step B.
The method according to this invention, described DNS-ALG switch process comprises: the main frame of the inner private network of IPv4 sends the DNS query message by the domain name of the main frame of an IPv6 network, this query message is inquired about through the dns server in NAT-PT conversion and the DNS-ALG processing back arrival IPv6 network, by the response of the dns server in described IPv6 network DNS query message, the IPv6 address that comprises this domain name correspondence in the response message, after this message arrives border router, after NAT-PT conversion and DNS-ALG processing, be the IPv6 address spaces of this domain name correspondence the IPv4 address.
The method according to this invention, in the described steps A border router with the host address of the Ipv6 network that it disposed and in the Ipv4 network corresponding Ipv4 address be kept in the address translation entry; The host address of the inner private network of IPv4 and in the IPv6 network corresponding IPv6 address be kept in another address translation entry;
Border router converts an Ipv4 destination address in this message and an Ipv4 source address to an IPv6 destination address and an IPv6 source address according to this address translation entry among the described step B;
Border router converts the 2nd IPv6 destination address in this response message and the 2nd IPv6 source address to the 2nd Ipv4 destination address and the 2nd Ipv4 source address according to this address translation entry among the described step C.
The method according to this invention, described steps A dispose the IP address and the NAT-PT attribute of the interface that links to each other with the inner private network of IPv4 in described border router.
The method according to this invention, described steps A dispose the IP address and the NAT-PT attribute of the interface that links to each other with the IPv6 network in described border router.
The method according to this invention, described integrated network system also comprises the IPv4 external public network, border router can also start simultaneously and realizes nat feature in the described steps A, so that the main frame of the inner private network of described IPv4 is as required by this nat feature visit IPv4 external public network.
The present invention also provides a kind of border router of realizing said method, be applied to comprise the integrated network system of inner private network of IPv4 and IPv6 network composition, and described border router is arranged between inner private network of IPv4 and the IPv6 network, and described border router comprises at least:
The NAT-PT functional module is used for starting and realizing the NAT-PT function;
The address configuration module is used for disposing the Ipv4 address of the main frame of Ipv6 network at the Ipv4 network by corresponding transformation rule and condition, and is used for the IPv6 address of the main frame of the inner private network of configuration of IP v4 at the IPv6 network;
Address conversion module, be used at the main frame of receiving the inner private network of described IPv4 when the main frame of an IPv6 network is initiated the message visit, converting an Ipv4 destination address in this message and an Ipv4 source address to an IPv6 destination address and an IPv6 source address respectively; When perhaps being used for after the main frame of receiving described IPv6 network is handled this message, sending response message, convert the 2nd IPv6 destination address in this response message and the 2nd IPv6 source address to the 2nd Ipv4 destination address and the 2nd Ipv4 source address respectively;
The message sending module is used for the main frame that with the main frame of the inner private network of IPv4 that send and message that changed sends to described IPv6 network; Perhaps be used for that send and response message that changed and issue the main frame of the inner private network of described IPv4 the main frame of described IPv6 network.
According to border router of the present invention, described integrated network system also comprises the IPv4 external public network, and described border router also comprises:
The nat feature module is used for starting and realizing nat feature, so that the main frame of the inner private network of described IPv4 is as required by this nat feature visit IPv4 external public network.
The present invention is by starting on the border router between inner private network of IPv4 and the IPv6 network and realization NAT-PT function, and come the IPv4 address of main frame in the IPv4 network of configuration of IP v6 network by corresponding transformation rule and condition, and the IPv6 address of main frame in the IPv6 network of the inner private network of configuration of IP v4, when the main frame of the inner private network of IPv4 when the main frame of an IPv6 network is initiated the message visit, and the main frame of IPv6 network is when the main frame of the inner private network of IPv4 returns response message, realize separately destination address and the exchange of source address between IPv4 address and IPv6 address in the message, with the main frame of realizing the inner private network of IPv4 by of the visit of this border router to the main frame of IPv6 network.The present invention realizes simply, on the router configuration also more convenient, NAT-PT address transition flow process does not need to change, and can realize very easily, to transparent process of user Lai Shuoshi, need not it and intervenes, and has reduced the complexity that technology realizes.
Description of drawings
Fig. 1 is the networking schematic diagram that border router of the present invention is applied to integrated network;
The structural representation of border router of the present invention during Fig. 2;
Fig. 3 is the method flow diagram of IPv4 internal private network to visit IPv 6 network of the present invention;
When being embodiment of the invention IPv4 internal private network to visit IPv 6 network, Fig. 4 is suitable for the method flow diagram of static rule.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Basic thought of the present invention is: the method that proposes a kind of IPv4 internal private network to visit IPv 6 network, by on the border router between inner private network of IPv4 and the IPv6 network, enabling the NAT-PT function, and on this border router, IPv4 inside private network and IPv6 network are disposed accordingly, by this router the address in the contact message is changed, make the main frame of the inner private network of IPv4 can directly visit the main frame of IPv6 network.
NAT-PT is SIIT (Stateless IP/ICMP Translation, stateless IP/ICMP translation) NAT dynamic address switch technology combines in protocol conversion technology and the IPv4 network, it allows only to support the main frame of IPv6 agreement and only supports the main frame of IPv4 agreement to carry out interconnected, be responsible for translating conversion between IPv4 message and IPv6 message at IPv4 and IPv6 network boundary routing device for one, the present invention utilizes prior art and it is improved.
Fig. 1 shows border router of the present invention and is applied to networking schematic diagram in the integrated network, in this integrated network 10, comprise IPv4 network 11 and IPv6 network 13, also further comprise the border router 12 between two networks provided by the present invention, as shown in Figure 2, described border router 12 comprises at least:
NAT-PT functional module 121 is used for starting and realizing the NAT-PT function.
Described integrated network system 10 also comprises IPv4 external public network 14, and described border router 12 also comprises:
Described border router 12 also further comprises the DNS-ALG modular converter, when being used for passing through domain name access between IPv4 network and the IPv6 network, this domain name is changed and is handled.
Fig. 3 illustrates the method flow diagram of IPv4 internal private network to visit IPv 6 network of the present invention, it is applied to the integrated network system 10 that inner private network 11 of IPv4 and IPv6 network 13 are formed that comprises as shown in Figure 1, be provided with as shown in Figure 2 a border router 12 between described two networks, described method comprises that step has:
Step S301, described border router 12 start and realization NAT-PT function, and the Ipv4 address of main frame 131 in Ipv4 network 11 that disposes the Ipv6 network by corresponding transformation rule and condition, and the IPv6 address of main frame 111 in IPv6 network 13 of the inner private network of configuration of IP v4.Particularly, start by the NAT-PT functional module 121 of border router 12 and realize the NAT-PT function; Dispose the IPv6 address of the main frame 111 of the Ipv4 address of main frame 131 of Ipv6 network and the inner private network of IPv4 by address configuration module 122.
The main frame 111 of the inner private network of step S302, described IPv4 is initiated the message visit by this border router 12 to the main frame 131 of an IPv6 network, after described border router 12 converted the Ipv4 destination address in this message and an Ipv4 source address to an IPv6 destination address and an IPv6 source address respectively, the message that will change sent to the main frame 131 of IPv6 network again.In this step in the message conversion of relative address realize that by the address conversion module 123 of border router 12 and the message after will being changed by message sending module 124 sends to the main frame 131 of IPv6 network.
Preferably, the main frame 111 of the inner private network of IPv4 is initiated message visit by border router 12 to the main frame 131 of this IPv6 network according to this IPv4 address then by the IPv4 address of the main frame 131 of this IPv6 network of DNS-ALG conversion acquisition among the described step S302.Described DNS-ALG switch process comprises: the main frame 111 of the inner private network of IPv4 sends the DNS query message by the domain name of the main frame 131 of an IPv6 network, this query message is inquired about through the dns server 132 in NAT-PT conversion and the DNS-ALG processing back arrival IPv6 network, by the 132 response DNS query messages of the dns server in the described IPv6 network, the IPv6 address that comprises this domain name correspondence in the response message, after this message arrives border router 12, after NAT-PT conversion and DNS-ALG processing, be the IPv6 address spaces of this domain name correspondence the IPv4 address.
After receiving this message, handles by the main frame 131 of step S303, described IPv6 network, if need response, then response message is sent to described border router 12, after described border router 12 converted the 2nd IPv6 destination address in this response message and the 2nd IPv6 source address to the 2nd Ipv4 destination address and the 2nd Ipv4 source address respectively, the response message that will change was issued the main frame 111 of the inner private network of described IPv4 again.The conversion of relative address is realized by the address conversion module 123 of border router 12 in the response message in this step, and the response message after will change by message sending module 124 sends to the main frame 111 of IPv4 inside private network.
Preferably, border router 12 is kept at Ipv4 address corresponding in the host address of the Ipv6 network that it disposed and the Ipv4 network in one address translation entry among the described step S301; The host address of the inner private network of IPv4 and in the IPv6 network corresponding IPv6 address be kept in another address translation entry; Border router 12 converts an Ipv4 destination address in this message and an Ipv4 source address to an IPv6 destination address and an IPv6 source address according to this address translation entry among the described step S302; Border router 12 converts the 2nd IPv6 destination address in this response message and the 2nd IPv6 source address to the 2nd Ipv4 destination address and the 2nd Ipv4 source address according to this address translation entry among the described step S303.
Described integrated network system 10 also comprises IPv4 external public network 14, border router 12 also starts simultaneously and realizes nat feature among the described step S301, so that the main frame 111 of the inner private network of described IPv4 is as required by this nat feature visit IPv4 external public network 14; Can certainly directly visit IPv6 network 13 by this NAT-PT function.
Preferably, described step S301 disposes the IP address and the NAT-PT attribute of the interface that links to each other with the inner private network 11 of IPv4 in described border router 12; And the IP address and the NAT-PT attribute of the interface that links to each other with IPv6 network 13 of configuration.And by static rule configuration or the Ipv4 address of main frame 131 in Ipv4 network 11 that obtain the Ipv6 network by DNS-ALG; And/or, come the IPv6 address of main frame 111 in IPv6 network 13 of the inner private network of configuration of IP v4 by static rule, dynamic programming or prefixing.
Described its conversion method of prefix rule is in pooled NAT-PT, and border router 12 is announced one 96 address prefix to IPv6 network 13, and in conjunction with the sign of 32 IPv4 addresses conducts of main frame to the main frame in the IPv4 network 111.The message that sends to IPv4 network 11 from the main frame 131 of IPv6 network, its destination address prefix is identical with the address prefix of NAT-PT issue, these messages all are routed to border router 12, make amendment by 12 pairs of headings of border router, take out IPv4 address information wherein, replace destination address.Simultaneously, the NAT-PT gateway has defined the IPv4 address pool, and border router 12 takes out an address and comes the source address of substitute I Pv6 message from address pool, thereby finishes the conversion from the IPv6 address to the IPv4 address.
When being embodiment of the invention IPv4 internal private network to visit IPv 6 network, Fig. 4 is suitable for the method flow diagram of static rule, it is applied to the integrated network system 10 that inner private network 11 of IPv4 and IPv6 network 13 are formed that comprises as shown in Figure 1, be provided with as shown in Figure 2 a border router 12 between described two networks, for outstanding basic thought of the present invention, present embodiment employing static rule is the most intuitively further set forth, and described method step comprises:
Step S401, in the enterprising line correlations configuration of border router 12, this configuration flow comprises:
Flow process 1, enable the NAT-PT function:
ipv6?nat?enable；
The IP address and the NAT-PT attribute of the interface that flow process 2, setting link to each other with IPv4 network 11, for example:
interface?fei_1/1，
ip?address?192.168.1.2?255.255.255.0，
ipv6?nat?enable；
The IP address and the NAT-PT attribute of the interface that flow process 3, setting link to each other with IPv6 network 13, for example:
interface?fei_2/1，
ipv6?enable，
ipv6?address?2000::2，
ipv6?nat?enable；
The address of main frame 131 in IPv4 network 11 in flow process 4, the configuration of IP v6 network domains, for example:
ipv6?nat?v6v4?source?2000::1?200.1.1.20；
The map addresses of main frame 111 in IPv6 network 13 of flow process 5, the inner private network of configuration of IP v4, for example:
ipv6?nat?v4v6?source?192.168.1.1?3000::1，
Address transition in flow process 4 and/or the flow process 5 if adopt dynamic programming, can be enabled the DNS-ALG function by described border router and obtain this address from the contact message,
Through after the flow process 1 to 5, thereby finished relevant configuration to border router one 2.
The main frame 111 of the inner private network of step S402, IPv4 is initiated the visit message, and source address is 192.168.1.1 (an Ipv4 source address) in the message, and destination address is 200.1.1.20 (an Ipv4 destination address).
After step S403, this message arrive and enable the border router 12 of NAT-PT function, according to static rule destination address 200.1.1.20 is converted to 2000::1 (an IPv6 destination address), static rule according to configuration converts source address 192.168.1.1 to 3000::1 (an IPv6 source address), and the message after will changing then mails to the main frame 131 in the IPv6 network domains.
After main frame 131 in step S404, the IPv6 network domains is received message, if response message, then response message is mail to the border router 12 that carries out the NAT-PT conversion according to routing address, source address is 2000::1 (the 2nd an IPv6 source address) in the response message, and destination address is 3000::1 (the 2nd an IPv6 destination address).
Step S405: after described border router 12 is received this response message, according to the conversion clauses and subclauses address of message is changed, source address is 200.1.1.20 (the 2nd an IPv4 source address), destination address is 192.168.1.1 (the 2nd an IPv4 destination address), will generate the main frame 111 that corresponding message is issued the inner private network of IPv4 at last.
In summary, the present invention is by starting on the border router between inner private network of IPv4 and the IPv6 network and realization NAT-PT function, and come the IPv4 address of main frame in the IPv4 network of configuration of IP v6 network by corresponding transformation rule and condition, and the IPv6 address of main frame in the IPv6 network of the inner private network of configuration of IP v4, when the main frame of the inner private network of IPv4 when the main frame of an IPv6 network is initiated the message visit, and the main frame of IPv6 network is when the main frame of the inner private network of IPv4 returns response message, realize separately destination address and the exchange of source address between IPv4 address and IPv6 address in the message, with the main frame of realizing the inner private network of IPv4 by of the visit of this border router to the main frame of IPv6 network.The present invention realizes simply, on the router configuration also more convenient, NAT-PT address transition flow process does not need to change, and can realize very easily, to transparent process of user Lai Shuoshi, need not it and intervenes, and has reduced the complexity that technology realizes.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the method for an IPv4 internal private network to visit IPv 6 network, it is characterized in that, be applied to comprise the integrated network system of inner private network of IPv4 and IPv6 network composition, be provided with a border router between described two networks, described method comprises that step has:
A, described border router start and realize the NAT-PT function, and the Ipv4 address of main frame in the Ipv4 network that disposes the Ipv6 network by corresponding transformation rule and condition, and the IPv6 address of main frame in the IPv6 network of the inner private network of configuration of IP v4;
The main frame of the inner private network of B, described IPv4 is initiated the message visit by this border router to the main frame of an IPv6 network, after described border router converted the Ipv4 destination address in this message and an Ipv4 source address to an IPv6 destination address and an IPv6 source address respectively, the message that will change sent to the main frame of described IPv6 network again;
The main frame of C, described IPv6 network is handled after receiving this message, if need response, then response message is sent to described border router, after described border router converted the 2nd IPv6 destination address in this response message and the 2nd IPv6 source address to the 2nd Ipv4 destination address and the 2nd Ipv4 source address respectively, the response message that will change was issued the main frame of the inner private network of described IPv4 again.
2. method according to claim 1 is characterized in that, the Ipv4 address of main frame in the Ipv4 network that disposes or obtain the Ipv6 network by DNS-ALG by static rule in the described steps A; And/or
Come the IPv6 address of main frame in the IPv6 network of the inner private network of configuration of IP v4 in the described steps A by static rule, dynamic programming or prefixing.
3. method according to claim 2, it is characterized in that, the main frame of the inner private network of IPv4 is initiated message visit by border router to the main frame of this IPv6 network according to this IPv4 address then by the IPv4 address of the main frame of this IPv6 network of DNS-ALG conversion acquisition among the described step B.
4. method according to claim 3, it is characterized in that, described DNS-ALG switch process comprises: the main frame of the inner private network of IPv4 sends the DNS query message by the domain name of the main frame of an IPv6 network, this query message is inquired about through the dns server in NAT-PT conversion and the DNS-ALG processing back arrival IPv6 network, by the response of the dns server in described IPv6 network DNS query message, the IPv6 address that comprises this domain name correspondence in the response message, after this message arrives border router, after NAT-PT conversion and DNS-ALG processing, be the IPv6 address spaces of this domain name correspondence the IPv4 address.
5. method according to claim 2 is characterized in that, in the described steps A border router with the host address of the Ipv6 network that it disposed and in the Ipv4 network corresponding Ipv4 address be kept in the address translation entry; The host address of the inner private network of IPv4 and in the IPv6 network corresponding IPv6 address be kept in another address translation entry;
Border router converts an Ipv4 destination address in this message and an Ipv4 source address to an IPv6 destination address and an IPv6 source address according to this address translation entry among the described step B;
Border router converts the 2nd IPv6 destination address in this response message and the 2nd IPv6 source address to the 2nd Ipv4 destination address and the 2nd Ipv4 source address according to this address translation entry among the described step C.
6. method according to claim 2 is characterized in that, described steps A disposes the IP address and the NAT-PT attribute of the interface that links to each other with the inner private network of IPv4 in described border router.
7. method according to claim 2 is characterized in that, described steps A disposes the IP address and the NAT-PT attribute of the interface that links to each other with the IPv6 network in described border router.
8. method according to claim 2, it is characterized in that, described integrated network system also comprises the IPv4 external public network, border router can also start simultaneously and realizes nat feature in the described steps A, so that the main frame of the inner private network of described IPv4 is as required by this nat feature visit IPv4 external public network.
9. the border router of a realization such as each method of claim 1～8, it is characterized in that, be applied to comprise the integrated network system of inner private network of IPv4 and IPv6 network composition, and described border router is arranged between inner private network of IPv4 and the IPv6 network, and described border router comprises at least:
The NAT-PT functional module is used for starting and realizing the NAT-PT function;
The address configuration module is used for disposing the Ipv4 address of the main frame of Ipv6 network at the Ipv4 network by corresponding transformation rule and condition, and is used for the IPv6 address of the main frame of the inner private network of configuration of IP v4 at the IPv6 network;
Address conversion module, be used at the main frame of receiving the inner private network of described IPv4 when the main frame of an IPv6 network is initiated the message visit, converting an Ipv4 destination address in this message and an Ipv4 source address to an IPv6 destination address and an IPv6 source address respectively; When perhaps being used for after the main frame of receiving described IPv6 network is handled this message, sending response message, convert the 2nd IPv6 destination address in this response message and the 2nd IPv6 source address to the 2nd Ipv4 destination address and the 2nd Ipv4 source address respectively;
The message sending module is used for the main frame that with the main frame of the inner private network of IPv4 that send and message that changed sends to described IPv6 network; Perhaps be used for that send and response message that changed and issue the main frame of the inner private network of described IPv4 the main frame of described IPv6 network.
10. border router according to claim 9 is characterized in that described integrated network system also comprises the IPv4 external public network, and described border router also comprises:
The nat feature module is used for starting and realizing nat feature, so that the main frame of the inner private network of described IPv4 is as required by this nat feature visit IPv4 external public network.
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