Network setup and configuration Nowadays, it is so complex that IPv6 is designed to support the automatic installation and tuning of systems. configuration) to facilitate allocation, IP address (Address Renumbering), multi-homing, and even network management. Plug-and-play
2. Broadcast / Multicast / Anycast
In IPv4, part of the IP address was allocated as a broadcast address, but in reality broadcast communication was unnecessary and wasted bandwidth.Multicast was more efficient communication and became popular with IPv6. It is designed to support Multicast group address and cut off the broadcast address.
IPv6 also increases Anycast communication capability, allowing more devices to One IP address is allocated to the same number, which means any device can respond to the information sent to that Anycast address.
3. Mobile IP
IPv6 supports the same mobile Internet use as IPv4, but Mobile IPv6 is more efficient than Mobile IPv4 in that it can transmit data through the shortest possible routes, without relying on intermediary devices for forwarding. Optimization) and IPSec can be used to prevent packet theft in the middle of the road.
All routers and network devices in an IPv6 network are configured to support IPSec deployments.There are also two types of Security Payloads, Authentication Payload and Encrypted Security Payload, to support stable and secure traffic under the Network Layer. Instead of relying on the Application Layer as in IPv4 networks.
5.Virtual Private Network (VPN)
Traditionally, in IPv4 networks, VPN services were performed by using IPSec to encrypt all network layer data, which would be a problem if the source or destination network had a Network Address Translation (NAT) because the encryption had to end before reaching the destination for. IPv6 networks do not have such a problem. Since NAT is no longer needed, Extended Header, called Authentication Header and Encapsulated Security Payload, can also be used to support secure VPN usage.
IPv6 was designed to support the quality assurance of service from the start. This can be seen from the Flow Label and Traffic Class locations in the header, although in the IPv4 header there is a Type-of-Service location. But not widely used As there are no standard configurations and not all routers can process ToS locations, IPv4 has previously let the layers below handle QoS, for example through MPLS technology.
7. Maximum Transfer Unit (MTU)
The minimum MTU in an IPv4 network is 576 bytes and is added to 1280 bytes in an IPv6 network. The minimum MTU length increase. This will make the data transmission in IPv6 network more efficient. It reduces the proportion of header information to all data.