The command output explicitly shows Protocol: fcp, which stands for Fibre Channel Protocol. In an FCP SAN environment, host initiators (the ports on a Host Bus Adapter or HBA) are uniquely identified by their World Wide Port Name (WWPN). The value shown for Initiators, 20:00:00:25:b5:11:11:11, is a 64-bit hexadecimal address, which is the standard format for a WWPN. This WWPN is used within the initiator group (igroup) to grant the specific host port access to LUNs.

A. NQN: An NVMe Qualified Name (NQN) is an identifier used for hosts in an NVMe over Fabrics (NVMe/oF) environment, not FCP.

B. WWNN: A World Wide Node Name (WWNN) identifies an entire device or node (like a multi-port HBA), not the specific initiator port used for I/O.

C. IQN: An iSCSI Qualified Name (IQN) is a unique identifier used for initiators and targets in an iSCSI network, which uses TCP/IP, not Fibre Channel.

1. NetApp ONTAP Documentation

Command-Line Interface (CLI) Reference. In the manual page for the lun igroup create command

the description for the -initiator parameter states: "For the FCP protocol

the initiator is the World Wide Port Name (WWPN) of the host initiator port." This directly confirms that FCP initiators are WWPNs.

Source: NetApp ONTAP 9.12.1 Documentation Center

lun igroup create command reference.

2. NetApp ONTAP SAN Configuration Guide. The guide explains the process of configuring FCP and creating initiator groups. It states: "You create an initiator group (igroup) to control which hosts can access a LUN. An igroup contains the worldwide port names (WWPNs) for a host's HBAs."

Source: NetApp ONTAP 9.12.1 SAN Configuration

"FCP configuration workflow" section.

3. NetApp Technical Report TR-4080

SAN Configuration Guide. This document details best practices for SAN configuration. In the section discussing FCP host connectivity

it clarifies: "An initiator group

or igroup

is a collection of the WWPNs of the host bus adapters (HBAs) that are in a host or a cluster of hosts."

Source: NetApp TR-4080

"ONTAP SAN Configuration Guide

" Page 13

Section "Initiator Groups".