Which component of a Cisco Nexus 1000V Series switch is responsible for propagating configurations to virtual switches?

Product Architecture - The Cisco Nexus 1000V Series Switch has two major components (Figure 1): the virtual Ethernet module (VEM), which runs inside the hypervisor, and the virtual supervisor module (VSM), which manages the VEMs. Virtual Supervisor Module - The Cisco Nexus 1000V Series VSM controls multiple VEMs as one logical modular distributed virtual switch. Configuration is performed through the VSM and is automatically propagated to the VEMs. Reference: http://www.cisco.com/c/en/us/products/collateral/switches/nexus-1000v-switch-vmwarevsphere/data_sheet_c78-492971.html