Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR) v1.2VirtualizationEasy
A network engineer is configuring a Cisco Nexus switch to logically separate network traffic for different tenants while sharing the same physical hardware. Which virtualization technology is most appropriate for this requirement?
- AVLAN Trunking Protocol (VTP)
- BGRE tunneling
- CVRF-Lite
- DVirtual Device Context (VDC)
Show answer & explanationAnswer & explanation
Correct answer: D. Virtual Device Context (VDC)
Virtual Device Contexts (VDCs) on Cisco Nexus switches allow for the logical partitioning of a single physical switch into multiple independent logical switches, each with its own control plane, data plane, and management plane. This perfectly aligns with the requirement to separate network traffic for different tenants while sharing the same physical hardware.
Why the other options are wrong
- A. VLAN Trunking Protocol (VTP) manages VLAN configurations across switches, but does not provide device virtualization or tenant separation.
- B. GRE tunneling is a site-to-site VPN technology, not a device virtualization feature for a single switch.
- C. VRF-Lite provides routing table separation within a single router, but not full device virtualization like VDCs.
Virtual Device Context (VDC)
A technology on Cisco Nexus switches that allows a single physical switch to be partitioned into multiple logical switches, each operating independently.
- Provides full separation of control, data, and management planes.
- Each VDC can have its own interfaces, VLANs, and routing instances.
- Enhances multi-tenancy and resource isolation on Nexus platforms.
Memory trick: Nexus VDCs: Virtual Devices Create Separation.