N_Port (Node Port):
A port on a node that connects to a fabric
HBAs and Subsystem controllers contain one or more N_Ports
Can also connect two nodes in a point-to-point topology
An N_Port directly connects to another N_Port. This creates a point to point
connection.
Here we have an N_Port connected to another N_Port. This creates a point to
point connection. Alternatively, the N_Port can be connected to a switch port
across the link. This will create a point to point connection.