We analyse and compare some transition mechanisms presently, and especially focus on the tunnel mechanism in the third section.
第三章对目前存在的多种过渡机制进行研究分析和比较，重点论述了目前常用的隧道机制。
2
Then the idiographic scheme are introduced in detail against different problems in transition period, including dual protocol stack, the tunnel technology, translating mechanism.
然后详细介绍了针对过渡期不同问题的具体策略和方案，包括双协议栈、隧道技术和协议翻译机制。
3
According to the transition plan, design test programs and test cases, through analyzing test results in the actual network environment, can be obtained the conclusion of kinds of tunnel technology.