IPv4 What are the ways of IPv6 transition, and what are the characteristics of each

The main thing is that two IPs exist at the same time. How could it be otherwise?

Let me briefly ask you about it.

Currently, there are three strategies and transition technologies to achieve the coexistence of IPv4 and IPv6. First, the use of dual stacks allows the host or network device to support both IPv4 and IPv6 dual protocol stacks. Second, IPv6 packets are encapsulated in IPv4 packets through tunneling technology. Third, IPv6 packets are converted into IPv4 packets and vice versa via Network Address Translation (NAT) technology.

An end-to-end device that supports IPv4 at the same time IPv6 is an ideal deployment configuration, which is a direct solution for simultaneous deployment of IPv4 and IPv6 dual protocol stacks to add IPv6 services without canceling IPv4.

The tunnel is encapsulated to deliver heterogeneous protocol packets, and the network fully supports dual stacks without the need for Zhenling socks. There are two types of tunnel schemes, 6in4 mode and 4in6 mode.

IPv4 IPv6 translation technology can successfully achieve the problem of mutual access between IPv4 network and IPv6 network. Translation technologies mainly include network-layer translation technology and application-layer translation technology.

The three IPv6 transition technologies have their own advantages and disadvantages, and need to be considered comprehensively from the aspects of periodicity, implementation cost, technical difficulty, deployment convenience, and O&M difficulty.

Therefore, it is necessary to choose different transition technologies in different scenarios based on actual needs

1) For the scenario of creating a new business system, it is recommended to use dual-stack technology and support both IPv4 and IPv6.

2) For scenarios where multiple isolated IPv6 networks are interconnected, such as the interconnection of multiple IPv6 data centers, tunnel technology can be used to encapsulate IPv6 data into IPv4 networks for transmission to reduce the cost and pressure of deployment.

3) For the business system that has been launched, the address protocol conversion technology can be used to achieve low cost and fast implementation.

The above is the introduction of the three IPv6 upgrade technologies, I hope to help you

The main IPv4 IPv6 transition technologies include:

tunneling: Encapsulates IPv6 packets in IPv4 hail dust packets, transmits them over the IPv4 network, and decapsulates them at the endpoint.

translation: Converts the protocol source hall format at the network boundary so that IPv4 and IPv6 hosts can communicate between incompatible networks.

Dual Stack: Enable both the IPv4 and IPv6 stacks on the host or router and communicate using both.

IPv6 offers several improvements over IPv4:

Larger address space: IPv6 uses 128-bit addresses, which provides more address space than IPv4's 32-bit addresses, which means that IPv6 can support more devices to connect to the internet, providing more headroom for the scalability of the internet.

Security: IPv6 includes built-in support for Internet Protocol Security (IPsec), a protocol that encrypts and authenticates network traffic, providing greater security and privacy.

Quality of Service (QoS): IPv6 includes QoS capabilities that can provide different priorities and quality of service for different types of traffic, which ensures better network performance and service levels.

Simplified header format: IPv6 header format is cleaner than IPv4, and the header length has been reduced from 20 bytes to 40 bytes, which means that IPv6 packets are smaller and the network transmission is more efficient.

Multicast: IPv6 supports more efficient multicast, which can transmit data to multiple devices at the same time, reducing network traffic.

Overall, IPv6 offers more address space, auto-provisioning, higher security and privacy, better quality of service, more efficient header formats, and more efficient multicast support than IPv4. These improvements provide an important foundation for the scalability, security, and efficiency of the Internet.

-Funnet Super Fun Learning Network.

1. IPv6 will be the only long-term solution to the IPv4 exhaustion problem. IPv4 addresses are no longer sufficient for the Internet, and the transition to IPv6 will allow the Internet to continue to evolve and drive the development of new and innovative services as more devices can connect to the Internet. IPv6 provides more address space to identify devices connected to the Internet.

Theoretically, IPv4 can provide up to about 4 billion addresses, while IPv6 provides about 340 trillion trillion (addresses, an unimaginably large number.

2. IPv6 helps provide trillions of new IP addresses, and IPv6 address resources will not be exhausted for at least the next 50 years, because the IP address space provided by IPv6 is very large, connecting smartphones, home appliances, and cars and other devices to the Internet. IPv6 also brings better service quality to new applications and services such as IP**, audio, interactive games, and e-commerce.

3. IPv6 address arrangement is much longer than IPv4. A typical IPv6 address has 8 groups of 4 hexadecimal characters (i.e. 0-f) each separated by a colon, so it looks like this: 2001:

0db8:85a3:08d3:

1319:8a2e:0370:

4. IPv6 can provide more address space. As a newly introduced communication protocol, IPv6 has made some design improvements, especially in terms of automatic system configuration, mobility, and scalability, which are superior to IPv4.

8) What are the shortcomings of IPv4? What are the main features of IPv6?

IPv4 is the fourth version of the Internet Protocol (Internet Protocol Version 4), IPv4 address is what we call the IP address in daily life, such as the common or, is a decimal number separated by 4 decimal places with stuffy lead, through the IP address, let our computers, mobile phones and other devices communicate on the Internet. IPv4 has been used for more than 30 years, and the allocation was completed on February 3, 2011, and only 100 million IPv4 addresses have been applied for in China, but only mobile Internet users have reached 100 million. The limited address space resources defined by IPv4 will be exhausted, and the lack of address space will inevitably hinder the further development of the Internet.

At the same time, address sharing limits many existing Internet applications, such as the popularity of remote operation of home appliances. IPv6, or Internet Protocol Version 6, is the sixth version of the Internet Protocol, and marks the beginning of the next generation of the Internet. IPv6 uses a 128-bit address length, and the total number of addresses can reach 2 to the power of 128.

It can be said that with IPv6, every grain of sand on the earth can have an IP address. IPv6 addresses are different from LPV4 addresses in that IPv6 has 8 fields, each of which is used":"Segregated, full IPv6 address plus.

Summary. Hello dear, glad to answer for you. Pro, 1

IPv4, a larger address space, stipulates that the length of IP addresses is 32 bits, that is, there are 2 32 addresses, about 100 million, and the current Internet users have exceeded 4 billion and are still growing rapidly, and IPv4 addresses are facing the problem of exhaustion at any time. The length of IP addresses in IPv6 is 128 bits, and its address capacity reaches 2 128, which is much larger than the IPv4 address capacity, which is enough to meet the growing demand of Internet users and the allocation of IoT addresses in the future. 2.

The packet structure is more concise, and the IPv4 packet length is not fixed, and there is an erratic option field to implement some specific functions, so the overall structure is more complex. The length of IPv6 packets is fixed, and the functions of option fields and fragmented fields are transferred to IPv6 extended headers, which greatly simplifies the packet structure of IPv6, and more functions are realized by adding different extended headers.

What are the technical features and advantages of IPv6 compared to IPv4?

Hello dear, glad to answer for you. Pro, 1IPv4, a larger address space, stipulates that the length of IP addresses is 32 bits, that is, there are 2 32 addresses, about 100 million, and the current Internet users have exceeded 4 billion and are still growing rapidly, and IPv4 addresses are facing the problem of exhaustion at any time.

The length of IP addresses in IPv6 is 128 bits, and its address capacity reaches 2 128, which is far larger than the capacity of IPv4 addresses, which is enough to meet the increasing allocation needs of Internet users including Shouzhou households and future Internet addresses. 2.The packet structure is more concise, and the IPv4 packet length is not fixed, and there is an erratic option field to implement some specific functions, so the overall structure is more complex.

The length of IPv6 packets is fixed, and the functions of the option field and fragmented fields are transferred to the IPv6 extension header, which greatly simplifies the packet structure of IPv6, and more functions are realized by adding different extension headers.

3.The address allocation of IPv6 follows the principle of "clustering", which can make the router use a return record in the routing table to indicate a ** network, which greatly reduces the length of the routing table in the router, and the speed of the router** packet is also improved, which also makes the speed of connecting and obtaining content through IPv6 faster than IPv4. 4.

Another important application of IPv6 popularization is the Internet identity authentication under the leakage of network real names. Due to the abundant IP resources, operators can directly assign a fixed IP address to each user when applying for network access, realizing the one-to-one correspondence between real users and IP addresses. When a user's IP address is fixed, its Internet access records and behaviors will be well documented in any period of time.