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This article mainly explains "what is the implementation path of the evolution from IPv4 to IPv6". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what is the implementation path from IPv4 to IPv6".

Technical Model of IPv4 to IPv6 Transformation

The industry excessively provides three solutions for the transformation from IPv4 to IPv6, namely, dual-stack technology mode, tunnel technology mode and address translation mode.

1. Dual-stack technology mode: running two independent planes on the same network: an IPv4 network plane and an IPv6 network plane, each maintaining its own IGP/EGP state and routing. In this mode, IPv4 and IPv6 coexist, which not only does not affect the existing IPv4 business, but also can meet the new needs of IPv6. However, the implementation cost of this mode is high, first, it needs the support of the network equipment of the whole network, and second, it is difficult to adjust the IGP/EGP of the equipment of the whole network. If it is only implemented in a small range, this is a better choice mode.

2. Tunnel technology mode: this model is applied to the boundary between IPv4 and IPv6. First, use the IPv4 network to establish IPv4 tunnels, and then achieve IPv6 point-to-point access, which is usually used for IDC egress boundaries or internal IGP cross-domain access. Technical protocols include 6in4 tunnel, DS+NAT, DS-Lite and so on. Tunnel mode is the most convenient of the three transformation methods, but there are certain requirements for intranet IGP protocol and critical link traffic consumption.

3. Translation mode: that is, without changing the existing network structure, IPv4 to IPv6 or IPv6 to IPv4 access translation through address translation protocol can meet the two-way access requirements between IPv4 and IPv6. The technology deployment protocol includes NAT 46, which is generally geared to data center exits and provides mapping from outside to inside and from inside to outside. This mode requires high equipment performance, and it is difficult to support high concurrent services, so it is suitable for services with small sessions.

Hard conditions that IPv4 to IPv6 implementation depends on

1. Network equipment: the switches, firewalls and operating systems involved should support the IPv6 protocol family.

2. Export operator: IPv6 access capability is required.

3. Internal business transformation: at the business code level, you need to add IPv6 protocol stack support.

Push the progress of IPv6 implementation

1. The choice of transformation mode.

To implement IPv6, we must first meet the hard conditions that the implementation of IPv6 depends on. At the same time, the core requirement is not only to meet the high-quality and low-latency access of IPv4 users, but also to further ensure the access of new IPv6 users. Through the analysis of the three transformation modes, the "dual-stack mode" is more suitable as a technical support guide in the process of promoting IPv6 transformation.

2. Transform the topology

This transformation is divided into two parts: one is to complete the IPv6 access transformation of the directly connected public network server group: using the dual-stack technology model, a network card interface runs IPv4 and IPv6 address at the same time. Complete the drainage from the public network to the IPv4 Nic by binding the domain name A record, and complete the drainage from the public network to the IPv6 Nic by binding the AAAA record. The second is to transform the business: to complete the transformation of SDK's support for the IPv6 protocol family.

3. Implementation progress

Thank you for reading, the above is the content of "what is the implementation path of the evolution from IPv4 to IPv6". After the study of this article, I believe you have a deeper understanding of what is the implementation path of the evolution from IPv4 to IPv6, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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