NL Port
A Fibre Channel controllers ID in a hexadecimal number; its hexadecimal format varies depending on the topology:
- For Private Arbitrated Loop, it is a one-byte Arbitrated Loop Physical Address (AL_PA).
- For all other Arbitrated Loops, it is displayed as a single 24-bit hexadecimal number (a triplet of Domain, Area, and AL_PA where each field is one byte).
- For Fabric and Point-to-Point, it is a three-byte hexadecimal number used in the D_ID and S_ID (Destination/Source Identifier) fields of Fibre Channel frames.