A method and system for configuring an Infiniband fabric is provided. The method comprises providing a virtual fabric configuration parameter via an enhanced user interface to a subnet manager (“SM’) to configure a virtual fabric within the Infiniband fabric; analyzing the virtual fabric; determining if configuration based on the virtual fabric configuration parameter can be implemented; computing a quality of service (QOS) parameter, a routing and a partition such that the QOS parameter, routing and partitioning are interrelated; and configuring a plurality of switches and a plurality of host channel adapters (HCA's) within the virtual fabric.