Resilient virtual infrastructure design and recovery

摘要

Overlaying virtual infrastructures on top of a physical infrastructure is a cost-effective way to achieve high resource utilization and has received an increasing amount of attention in several research fields. In the communication network field, multiple virtual overlay networks with diverse topologies, bandwidth and resilience properties can be created over a common physical network. For example, by partitioning an optical network infrastructure into virtual resources, we can provision multiple virtual optical networks, one for each client (e.g., an ISP), over the same optical network. The adoption of virtual infrastructure can also be found in the Infrastructure-as-a-Service (laaS) paradigm of cloud computing, where a virtual infrastructure includes both virtualized computing and networking.