Network connection redirection technology in virtual machine migration system
虚拟机迁移系统网络连接重定向技术*

To solve the problem that virtual machine (VM) could not communicate with nodes in network after it was migrated lively from a subnet to another subnet because its network access point was changed,designed and implemented a solution of network redirection based on proxy mobile IP (PMIP).When migrated an VM to an outer subnet, it was seen as a mobile node and its IP address configuration was not changed. The redirection system created a bi-directional tunnel between the foreign agent in foreign network and the home agent in home network, through which all traffic to and from the VM travels. This solution realized live migration across subnets which was transparent to VM and its correspondent node. The experimental results show the system can provide quick network switch and high network performance to the VM.