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SG0-001 · Question #355

A server has an HBA with the address of 23-00-00-1B-23-C4-B5-01. Which of the following properly identifies this type of address?

The correct answer is D. WWNN. The provided address, 23-00-00-1B-23-C4-B5-01, is an 8-byte hexadecimal value that represents a World Wide Node Name (WWNN), uniquely identifying a Fibre Channel node like an HBA.

Storage Components

Question

A server has an HBA with the address of 23-00-00-1B-23-C4-B5-01. Which of the following properly identifies this type of address?

Options

  • AMAC Address
  • BFCoE map
  • CN-port-ID
  • DWWNN

How the community answered

(14 responses)
  • C
    7% (1)
  • D
    93% (13)

Why each option

The provided address, 23-00-00-1B-23-C4-B5-01, is an 8-byte hexadecimal value that represents a World Wide Node Name (WWNN), uniquely identifying a Fibre Channel node like an HBA.

AMAC Address

A MAC Address is a 6-byte (48-bit) identifier used for Ethernet networking, not Fibre Channel, and has a distinct format.

BFCoE map

An FCoE map refers to a mapping between Fibre Channel WWNs and Ethernet MAC addresses, which is a conceptual mapping, not an address type itself.

CN-port-ID

An N-port-ID (or Fibre Channel Address Identifier) is a 3-byte address assigned by the Fibre Channel switch to a port when it logs in, not the 8-byte permanent WWN of the HBA.

DWWNNCorrect

A World Wide Node Name (WWNN) is an 8-byte (64-bit) unique identifier assigned to a Fibre Channel node, such as a Host Bus Adapter (HBA). The given address format, 23-00-00-1B-23-C4-B5-01, precisely matches the structure of a WWNN.

Concept tested: Fibre Channel addressing and identifiers (WWN)

Source: https://www.ibm.com/docs/en/aix/7.2?topic=protocol-fibre-channel-components

Topics

#WWN#WWNN#HBA#fiber channel

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