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200-155 · Question #57

Which statement about NPIV is true?

The correct answer is A. NPIV provides a means to assign multiple Fibre Channel IDs to a single N-port. NPIV (N-Port ID Virtualization) enables a single physical Fibre Channel N-port on an HBA to register multiple virtual N-port IDs with the Fibre Channel switch.

Cisco MDS Storage Platforms

Question

Which statement about NPIV is true?

Options

  • ANPIV provides a means to assign multiple Fibre Channel IDs to a single N-port.
  • BNPIV can be enabled on a per-VSAN basis.
  • CNPIV requires a "write erase" and then reload the switch in order to come up into NPIV mode.
  • DNPIV is a Cisco proprietary feature and as such works only between two Cisco switches.
  • ENPIV must not be enabled on a switch that is also running N-port virtualization.

How the community answered

(46 responses)
  • A
    89% (41)
  • C
    2% (1)
  • D
    2% (1)
  • E
    7% (3)

Why each option

NPIV (N-Port ID Virtualization) enables a single physical Fibre Channel N-port on an HBA to register multiple virtual N-port IDs with the Fibre Channel switch.

ANPIV provides a means to assign multiple Fibre Channel IDs to a single N-port.Correct

NPIV (N-Port ID Virtualization) allows a single physical Fibre Channel N-port (Host Bus Adapter port) to register multiple N-Port IDs (FCIDs) with the Fibre Channel switch, effectively presenting multiple virtual ports. This is essential for server virtualization where multiple virtual machines share a single physical HBA port, each requiring its own unique identity on the Fibre Channel fabric.

BNPIV can be enabled on a per-VSAN basis.

NPIV is a feature configured on a Fibre Channel switch port or HBA, not typically enabled on a per-VSAN basis, though it operates within VSAN contexts.

CNPIV requires a "write erase" and then reload the switch in order to come up into NPIV mode.

Enabling NPIV does not require a "write erase" and reload of the switch; it is a configurable feature that can be enabled or disabled dynamically.

DNPIV is a Cisco proprietary feature and as such works only between two Cisco switches.

NPIV is an industry-standard Fibre Channel feature (ANSI T11 FC-LS) and is not Cisco proprietary, meaning it works across various vendors.

ENPIV must not be enabled on a switch that is also running N-port virtualization.

NPIV is the underlying technology that enables N-port virtualization on host HBAs, making this statement contradictory as they are complementary concepts.

Concept tested: N-Port ID Virtualization (NPIV) functionality

Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/4_1/configuration/guides/fabric/fci_4_1_fabric/npiv.html

Topics

#NPIV#Fibre Channel#SAN virtualization#N-port

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