Mobile IPv6 (MIPv6) protocol is a new protocol designed to support the node mobility ofIPv6 protocol, which is a basic protocol of the next generation Internet. Protocol testing consists of conformance testing, interoperability testing and performance testing. Protocol emulation testing, which we adopt in this paper, is a way of protocol testing. This paper designs an emulation-based method for performance testing of mobile IPv6 protocol, gives performance evaluation metrics in view ofthe three kinds ofMIPv6 nodes (HA, home agent; MN, mobile node; eN,