中文摘要：

在IP网络中,虚拟机跨子网迁移后其网络地址发生了变化,将面临IP移动性问题。主要研究如何在未来网络体系结构—XIA（expressive internet architecture）中解决这一问题。利用XIA中标识与地址分离、基于DAG（directed acyclic graphs）的灵活路由等特性,提出了基于集合点代理的虚拟机在线迁移方法,并进行了具体实现和实验验证。结果表明,所提出的方法可满足虚拟机迁移后与通信对端网络连接的快速恢复,并具备控制平面简单和数据平面高效的优点。

英文摘要：

When a VM migrates among hosts residing in two IP subnets, the network attachment point of VM changed, which causes the IP mobility problem. It was meaningful to design and evaluate VM migration performance under the future internet architecture. XIA（expressive Internet architecture） was focused, a novel future internet architecture, support for VM live migration. Motivated by the natural features of ID/location decoupling, versatile routing with DAG（directed acyclic graphs） in XIA, The design and implementation of rendezvous agent based migration（RABM） approach was given. In demonstrate that XIA supported VM migration can achieve fast network re-connection between VM and correspondent node, while keeping the network control plane simplicity and data plane efficiency.