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200-155 · Question #223

Which two benefits are realized by using VDCs on Cisco NX-OS devices? (Choose two )

The correct answer is B. fault isolation D. physical redundancy. Virtual Device Contexts (VDCs) on Cisco NX-OS devices provide benefits such as fault isolation between logical instances and facilitate designs that leverage physical redundancy in a network infrastructure.

Cisco Nexus Switching Platforms

Question

Which two benefits are realized by using VDCs on Cisco NX-OS devices? (Choose two )

Options

  • Anetwork simplicity
  • Bfault isolation
  • Creduced IP address requirements
  • Dphysical redundancy
  • Emanagement separation

How the community answered

(27 responses)
  • A
    7% (2)
  • B
    89% (24)
  • E
    4% (1)

Why each option

Virtual Device Contexts (VDCs) on Cisco NX-OS devices provide benefits such as fault isolation between logical instances and facilitate designs that leverage physical redundancy in a network infrastructure.

Anetwork simplicity

VDCs introduce logical partitioning and configuration complexity to a single physical device, which generally increases rather than simplifies network design and management.

Bfault isolationCorrect

VDCs provide strong fault isolation by operating each logical device context as a separate process, ensuring that issues or failures within one VDC typically do not impact the operations of other VDCs on the same physical device.

Creduced IP address requirements

Each VDC operates as an independent network device with its own interfaces and routing instances, typically requiring its own distinct IP addressing schemes, which often increases overall IP address requirements.

Dphysical redundancyCorrect

While VDCs are logical constructs, they enable robust network designs that leverage physical redundancy by allowing logical network segments to be distributed across or failed over to redundant physical hardware, enhancing overall system availability.

Emanagement separation

Although VDCs offer independent configuration and administrative domains, the underlying physical device's global management (VDC1) still oversees all VDCs, meaning that complete management separation at the fundamental hardware level is not achieved.

Concept tested: Cisco NX-OS VDC benefits and use cases

Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus7000/sw/vdc/config/c_vdc_config.html

Topics

#VDCs#NX-OS#Nexus switches#fault isolation

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