摘要： 为了优化切换性能，IETF提出了层次型移动IPv6切换机制，在该协议中，链路转交地址和区域转交地址的重复地址检测操作十分耗时，该文提出一种使用链路层协助的方式，引入无冲突的暂定地址池，从暂定地址池里取出暂定地址，与网络前缀组合生成转交地址，避免重复地址检测操作，有效地缩短了切换延时。
关键词:
层次型移动IPv6协议,
重复地址检测,
链路层协助,
暂定地址池
Abstract: International Engineer Task Force(IETF) proposes a hierarchical mobile IPv6 protocol to provide mechanisms for handover performance. In the protocol, the Duplicate Address Detection(DAD) operations for the on-link care-of address and Regional Care-of Address(RCoA) greatly impair handover performance. The improved HMIPv6 is introduced to tentative address pool using link layer assistance. The tentative addresses are got from the pools directly, combined with the network prefix. Tentative address can be used as CoA, and therefore the DAD operations are avoided, so the handover delay can be greatly reduced.
Key words:
Hierarchical Mobile IPv6(HMIPv6) protocol,
Duplicate Address Detection(DAD),
link layer assistance,
tentative address pool
中图分类号:
刘慧祎;李秉智. 缩短DAD时延的层次型移动IPv6改进协议[J]. 计算机工程, 2008, 34(15): 117-119.
LIU Hui-yi; LI Bing-zhi. Improved Hierarchical Mobile IPv6 Protocol for Reducing DAD Delay[J]. Computer Engineering, 2008, 34(15): 117-119.