What is a limitation when PCI Passthrough is deployed?

Last Updated: Jan 22, 2021
IT Exam Items Repository › Category: CCNP › What is a limitation when PCI Passthrough is deployed?

What is a limitation when PCI Passthrough is deployed?

  • CPU utilization in increased.
  • VNFs cannot share pNICs.
  • Traffic between VNFs must be switched by an external switch.
  • A dedicated CPU core is required to poll pNICs and process incoming data.

Explanation: PCI Passthrough was developed to increase packet throughput in an OVS environment. However, the downside to PCI Passthrough is that each pNIC is dedicated to a single VNF.

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