Since IPv6 has more benefits over IPv4, the development and deployment of the IPv6 protocol-based products are currently taking place and the migration of IPv4 to IPv6 has also been steadily happen. In these mixed network environment, Network management for both IPv4 and IPv6 is a serious issue. In this paper, we focus on the design and implementation of an active measurement system which can be used for evaluating end-to-end performance of the IPv6/IPv4 network such as end-to-end available bandwidth, one-way delay, and one-way loss. We also describe the procedure of measurement when using AMT6 and some of its features. The IPv6/IPv4 users as well as network operators will be greatly helped to analyze network characteristics using the proposed architectural framework.