Question: how vdc works in nexus?
Answer: The Nexus 7000 NX-OS software supports Virtual Device Contexts (VDCs), VDC(s) allow the partitioning of a single physical Nexus 7000 device into multiple logical devices. This logical separation provides the following benefits: ... Change and failure domain isolation from other VDCs. Address, VLAN, VRF, and vPC isolation.