免重复地址检测移动IPv6快速切换方案

摘要

针对MIPv6中移动节点切换时延长的问题进行了研究,提出一种免重复地址检测移动IPv6快速切换方案.通过将IPv6地址的64位接口标志符重新划分为1位移动标志位、32位家乡代理IPv4地址和31位随机数,以保证移动节点接口标志符在全网的唯一性,使移动节点在不同链路切换过程中不再需要重复地址检测.通过仿真实验对该方案进行实验验证,结果表明该方案不需要进行任何重复地址检测即可完成移动节点无缝切换,且相对于标准MIPv6移动节点的切换时延缩短约25％.%Aiming at solving the problem of mobile node handover latency in MIPv6,this paper put forward a DAD-less optimization of fast handover in MIPv6.This scheme redrawed IPv6 address' s 64 bit interface identifier,divided it into 1 bit mobile identifier,32 bit home agent IPv4 address and 31 bit random number,so that it could guarantee the uniqueness of the 64 bit interface identifier in Internet,which no longer needed DAD(duplicate address detection) in handover in the mobile node when it moved to a different link.Finally,through the simulation experimental verification of the scheme,the results show that the scheme can achieve the seamless handover of mobile node without any DAD,and the mobile node handover latency decreases by about 25％ compared with the standard MIPv6.