What is IPv6 and what are the advantages?

IPv6 is an abbreviation of "Internet Protocol Version 6", which means the sixth generation Internet Protocol. With the rapid development of the Internet, the number of terminals accessing the network continues to increase rapidly. The IP address of the previous generation Internet Protocol IPv4 is partially lacking, which may become a bottleneck for the development of the Internet.

IPv6 address resolution works at the network layer and is called the neighbor discovery protocol. The neighbor discovery protocol is independent of the link layer protocol, unlike the IPv4 ARP between the link layer and the network layer. In contrast, IPv6 not only has sufficient addresses, but also is more convenient to manage. At the same time, it is not easy to be intercepted and tampered with. It is more secure and can adapt to the network needs of the Internet of Everything. Therefore, upgrading to IPv6 is imperative.

What should I do if IPv4 transitions to IPv6?

IPv6 is unlikely to replace IPv4 immediately, so IPv4 and IPv6 will coexist in an environment for quite some time. The implementation of IPv6 needs to transition to IPv6 through existing IPv4 devices to achieve IPv6 applications with minimal cost. The transition technology mainly solves the interconnection and intercommunication under the coexistence of IPv4 and IPv6 networks. There are three main strategies:

■ Dual-Stack: The dual stack is on the original Network Layer, and an IPv6 stack is added to allow the host to have both IPv4 and IPv6 communication capabilities.

■ Tunneling: When an IPv6 packet enters the IPv4 domain, the IPv6 packet is forwarded to the IPv4 domain and then sent to the IPv4 domain. When the IPv4 domain is removed from the IPv4 domain, the IPv4 header is removed and restored to the original IPv6 packet. Or by MPLS bearer to connect multiple IPv6 islands in the IPv4 Internet ocean.

■ Protocol conversion: Provides interworking between IPv4 and IPv6. For example, NAT-PT provides technologies for IPv6 and IPv4 mutual access, and is applicable to the coexistence of IPv6 Inernet and IPv4 Internet, and the two need to communicate with each other.

Sundray technology core switch fully supports IPv6

At present, Sundray technology core switches have fully supported the IPv6 protocol and provide various strategies to help customers smoothly transition from IPv4 to IPv6, including the current major IPv4/IPv6 dual stack technology, manual/automatic tunneling technology, 6to4 tunnel, and ISATAP tunnel. And other technologies.

There is still a long way to go for the full popularity of IPv6. Sundray Technology will continue to innovate and actively respond to the national strategy to achieve full-scale deployment of IPv6 and create a high-quality IPv6 solution.