Cisco Nexus - 1000V
The Cisco Nexus 1000V Series Virtual Supervisor Module (VSM) controls multiple VEMs as one logical modular switch. Instead of physical line card modules, the VSM supports multiple VEMs running in software inside of the physical servers. Configuration is performed through the VSM and is automatically propagated to the VEMs. Instead of configuring soft switches inside the hypervisor on a host- by- host basis, administrators can define configurations for immediate use on all VEMs being managed by the Virtual Supervisor Module from a single interface.