| 摘要 |
A method implemented by a network service provider to provide a virtual network to tenants requiring bandwidth in a cloud computing environment, wherein the virtual network includes a first set of one or more virtual switches that manage a second set of one or more physical servers that host a first plurality of available virtual machines (VMs), the method comprising receiving by at least one virtual switch a bandwidth request for a second plurality of VMs, determining whether to accept the request of the second plurality of VMs by calculating an allocation range (AR) associated to the virtual switch, wherein the AR denotes at least one discontinuous VM allocation space within the virtual switch, and allocating VMs to the tenant in response to the determination of accepting the request of the second plurality of VMs. |
