分层移动IPv6快速切换在一定程度上减少了切换延时,但切换过程中由网络层移动检测和使用重复地址检测(DAD)配置一个新转交地址引起的延时对实时业务仍然有很大的影响。为了减轻这些影响,文中提出了一种更加有效的快速邻居发现和DAD机制,减小了切换延时,提高了网络的性能。 Hierarchical Mobile IPv6 Fast Handoff to a certain extent reduce the switching delay, but the handover process by the network layer mobile detection and the use of duplicate address detection (DAD) to configure a new care-of address delay caused by the real-time business is still very large influences. In order to alleviate these effects, a more efficient fast neighbor discovery and DAD mechanism is proposed in this paper, which reduces the switching delay and improves the network performance.