尽管动态迁移是在服务器群集上实现负载平衡的一项重要功能，基于动态迁移构建的故障恢复在针对依赖HA的应用程序的云中打开新的应用程序。
Although live migration was an important feature for load balancing over a cluster of servers, failover built on live migration opens new applications within the cloud for HA-dependent applications.
两种方法(xen与kvm)都依赖于现有的动态迁移功能，因此我首先会介绍动态迁移功能，然后探讨有状态的VM故障恢复。
Both approaches (Xen and KVM) rely on the existing capability of live migration, which I describe first, and then explore stateful VM failover.
它通过引入控制平面并结合GMPLS协议实现连接的自动建立和拆除，并在相应机制下完成网络故障的动态保护和恢复。
The control plane can set up and take down a LSP tunnel automatically under the cooperation of GMPLS protocols, and complete the protection and recovery of network failures.
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