IFN=1 Can function as Initiator RXD=1 Xfer_Rdy not used for Read Cmd
Once the N_Port knows about each of the other ports in the fabric it can exchange higher level driver parameters with each of the other drivers.
It sends PRLI (Process Login) to each of the other ports to open a channel between Nodes. This example shows a SCSI driver behaving like a SCSI Initiator trying to open up a channel with another Node. It is trying to establish an Image pair between Nodes.
An Image pair is a logical process or image at one N_Port associated with a logical process or image at the other N_Port.