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IPv4 and IPv6 interconnection method and system based on SDN

An ipv4 address, ipv6 address technology, applied in the field of network communication, can solve problems such as not too much in-depth research, to avoid congestion and achieve the effect of strong transparency

Inactive Publication Date: 2020-01-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After the emergence of SDN, it has been paid attention to and applied in many aspects, such as network security, QoS guarantee, flow control, etc., but how to introduce the combination of SDN technology into the traditional IPv6 transition technology, so as to solve the complexity of the network and the business in the coexistence stage of IPv4 and IPv6 Sustainability, there is not much in-depth research

Method used

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  • IPv4 and IPv6 interconnection method and system based on SDN
  • IPv4 and IPv6 interconnection method and system based on SDN
  • IPv4 and IPv6 interconnection method and system based on SDN

Examples

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Embodiment 1

[0052] Such as image 3 As shown, this embodiment discloses a client in the IPv6 network as the initiating host to access the server in the IPv4 network (the steps and principles of the IPv6 client accessing the IPv4 client are similar, and will not be repeated here, and the embodiment 2 is the same) communication method, where the domain name of the IPv6 client is "www.IPv6.com", and the domain name of the IPv4 server is "www.IPv4.com". The whole communication process is as follows:

[0053] Step S301: The IPv6 client uses the domain name www.IPv4.com of the IPv4 server to initiate access to it. The IPv6 client first sends an RR type (resource type) of "AAAA" to the DNS6 domain name server to query the domain name www.IPv4.com .

[0054] Step S302: The domain name server DNS6 does not have a resource record corresponding to the domain name www.IPv4.com, so it initiates a query request for a record whose RR type is "AAAA" to the SDN controller.

[0055] Step S303: The SDN c...

Embodiment 2

[0066] Such as Figure 4 As shown, this embodiment discloses a communication method that uses a client in an IPv6 network as an initiating host to access a server in an IPv4 network, wherein the domain name of the IPv4 client is "www.IPv4.com", and the domain name of the IPv4 server is "www.IPv4.com" www.IPv6.com". The whole communication process is as follows:

[0067] Step S401: The IPv4 client uses the domain name www.IPv6.com of the IPv6 server to initiate access to it. The IPv4 client first sends an RR type "A" record query to the DNS4 domain name server to query the domain name www.IPv6.com.

[0068] Step S402: The domain name server DNS4 does not have a resource record corresponding to the domain name www.IPv6.com, so it initiates a query request for a record whose RR type is "A" to the SDN controller.

[0069] Step S403: The SDN controller invokes the domain name resolution management module, and the record query sent by the domain name resolution management module d...

Embodiment 3

[0080] Such as figure 1 As shown, a kind of SDN-based IPv4 and IPv6 interconnection system provided in this embodiment includes:

[0081] The routing configuration sub-module 101 implements the configuration of the border routing gateway device; mainly, the network administrator dynamically configures the reachability information between the networks during the network operation, and mainly configures the designated border routing gateway device directly connected to the edge switch. The network that can be reached, the network administrator adds or deletes the network that can be reached by the border routing gateway according to the change of the actual topology between the networks, and the route reachable information between the configured networks only refers to the logical information on the network level;

[0082] The routing detection sub-module 102 realizes the detection of border routing gateway equipment; when the network administrator configures the network reachabil...

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Abstract

The invention discloses an IPv4 and IPv6 interconnection method and system based on an SDN. The method comprises the following steps of: when an IPv6 / IPv4 client initiates access to an IPv4 / IPv6 network by using a domain name of the IPv4 / IPv6 network, through SDN query, request data transfer and control and conversion of a record query request, the IPv4 / IPv6 receives the converted record query request, queries and obtains a domain name which is the domain name in the network, and replies a record query response carrying an IPv4 / IPv6 address; transferring, translating and replying is carried out again through the SDN, the IPv6 / IPv4 client sends a first data packet by taking the received translated address as a destination address; and after being transferred and translated through the SDN,the data packet is sent to the IPv4 / IPv6 network and a reply data packet of the IPv4 / IPv6 network is received, then the data packet is translated into a fourth data packet and sent to the IPv6 / IPv4 client, and the IPv6 / IPv4 client receives the fourth data packet. According to the invention, only one routing table entry of the SDN controller of the SDN network is added on the basis of a traditionalnetwork, and IPv4 and IPv6 interconnection is completed.

Description

technical field [0001] The invention relates to the field of network communication, in particular to an SDN-based IPv4 and IPv6 interconnection method and system. Background technique [0002] With the expansion of the network scale and the emergence of various new applications, more and more problems are exposed in the IPv4 network, and it is necessary to pay a huge cost to completely upgrade the current IPv4 network to an IPv6 network, so in the future a long period of time IPv4 and IPv6 will exist at the same time within a certain period of time. In order to ensure the continuity of network services, IPv6 transition technology must be introduced during the coexistence stage of IPv4 and IPv6. Each of the transition technologies currently in use is specific to a specific application and is not universal. Therefore, in actual deployment, devices with corresponding functions are added to the network according to specific application requirements, which will not only increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/12H04L29/06H04L12/749H04L12/741H04L45/74H04L45/741
CPCH04L61/103H04L69/08H04L45/54H04L45/741H04L61/4511
Inventor 陆以勤李智鹏覃健诚程喆
Owner SOUTH CHINA UNIV OF TECH
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