Method for active reconfiguration of network prefix in agent mobile IPv6

Abstract

The invention discloses a method for active reconfiguration of a network prefix in an agent mobile IPv6. The method comprises: (1), when renumbering of a home network prefix (HNP) of a mobile node (MN) occurs, a local mobility anchor (LMA) distributes a new HNP to the MN; (2), the LMA sends an update notification (UPN) message to an MAG, wherein the UPN message includes an HNP option and an MN identifier option; (3), the MAG determines that the LMA configures the new HNP to the MN according to the received UPN, the MAG constructs a router advertisement (RA) based on the UPN and sends the RA to the MN; (4), the MAG sends the UPA message to the LMA to notify updating completion of the prefix information; and (5), after the MN determines the HNP changing based on the received RA, a new HNP configuration communication address is employed. Therefore, the HNP updating time delay can be reduced effectively.

Description

technical field [0001] The invention relates to a method for actively reconfiguring a network prefix in proxy mobile IPv6, and belongs to the field of network technology. Background technique [0002] In recent years, the rapid development of wireless network technology and application services has created an era of mobile computing. However, in traditional mobile communication networks, mobility management is performed at the link layer. With the transition to IP-based packet switching networks, link layer mobility cannot solve the problems caused by switching between different IP subnets. So IETF started the research and standardization work of network layer mobility protocol. Initially, the network layer mobility protocols proposed by the IETF are all client-based, such as Mobile IPv6 (MobileIPv6, MIPv6) and its extended protocols. However, there are some disadvantages in the terminal-based mobility management protocol, such as the need to update the existing terminal ...

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Problems solved by technology

[0005] 2) Multiple LMAs may coexist in the same PMIPv6 service provider's network. If the mobile node replaces the LMA but does not transfer the HNP allocated to it, the new LMA needs to re-allocate the HNP;

[0006] 3) Due to the change of the network architecture, the prefix information may change

In the PMIPv6 basic protocol, although the possibility of HNP renumbering is also considered, the related solution is not regulated in the standard (see RFC5213, Section6.12)

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