Unique Style of IPv6 network protocol"

Many people know that the current network IP address is no longer fully adapted to our needs, and it is frequently in a hurry, so that we have launched a higher IPv6 network protocol to transform the current Internet. So what special performance can we experience in IPv6? Now let's give you a detailed description of this aspect.

The IPv6 network protocol has many new features suitable for solving mobile problems, which are not available in IPv4. Therefore, the Mobile IPv6 protocol can better solve mobile problems, mainly in the following aspects:

◆ Automatic Address Configuration

IPv6 has enough global addresses. In addition, IPv6 implements an automatic configuration mechanism called stateless addresses, any node can automatically generate a global address based on the prefix information of the current link and its network interface information. The IPv6 address automatic configuration mechanism makes it easy for mobile nodes to get the forwarding address without human intervention.

◆ Neighbor Discovery

In neighbor discovery, the router should broadcast its prefix information on a regular basis. Based on the prefix information, the mobile node can quickly determine whether it has moved and automatically configure the forwarding address through the address.

◆ Security Mechanism

IPv6 has built-in security mechanisms and has been standardized. It supports seamless remote access to the enterprise network. In terms of security, the IPv6 protocol is consistent with the IP Security IPSec) mechanism and service. In addition to the mandatory network layer security mechanism, IPSec also provides two services. Authentication Header AuthenticationHeader, AH) is used to ensure data consistency. It can also be used for authentication, and the encapsulated Security load header EncapsulationSecurityPayloadHeader, ESP) it is used to ensure data confidentiality and data consistency. In addition, due to the new features of the IPv6 network protocol, you can also design a security mechanism for the mobile IPv6 protocol.

◆ Black Hole Detection

The mobile detection mechanism in the mobile IPv6 protocol provides a two-way reachable confirmation mechanism between the mobile node and its current vro, that is, the mobile node can know whether the current vro is reachable at any time, at the same time, the router can also know whether the node can continue to be reachable. If the mobile node detects that the current vro is no longer available, it will request another vro. MobileIPv4 only provides a forward detection mechanism, that is, the router can check whether the mobile node is reachable at any time, but the mobile node cannot detect whether the router is reachable.

◆ Routing Header

The Routing header is defined in the IPv6 network protocol. the header specifies the address of the node where the packet should pass through from the source node to the target node. Most data packets sent to a mobile node use the Routing header. The destination address of the data packet is the forwarding address of the mobile node and contains a Routing header, next to the Routing header is the home address of the mobile node.

◆ Dynamic hometown proxy address discovery mechanism

In the Mobile IPv6 network protocol, an address called "anycast" is defined, which is also an address group, all machines in the address group will receive the packet sent to the "anycast" address, but only one machine will respond to the packet. All routers on the home link of the mobile node are configured as Mobile-IPv6 anycast address, the mobile node sends the home proxy address discovery request message to the Mobile-IPv6 anycast address ", all home agents receive this message, but there is only one home agent that responds to this message.

◆ Implementation of transparency

Node movement is transparent to applications on mobile nodes and communication nodes.