Patent ID: 8224957

Claim:
A method of migrating virtual machines among networked servers, the servers coupled for data communications with a data communications network, the network comprising a networking device, the method comprising: establishing, by a virtual machine management module ('VMMM'), one or more virtual machines on a particular server; querying, by the VMMM, the networking device for link statistics of a link coupling the network device to the particular server for data communications; determining, by the VMMM in dependence upon the link statistics, whether the link coupling the network device to the particular server is degrading; and if the link coupling the network device to the particular server is degrading, migrating a virtual machine executing on the particular server to a destination server, including: querying the network device for link statistics of links coupling the network device to other servers; identifying, in dependence upon the link statistics, a non-degrading link; and selecting a server coupled to the network device by the non-degrading link as the destination server for the virtual machine executing on the particular server.