Dell PowerVault ML6000 - Manual (Page 50)

40 SCSI Commands
Fibre Channel Port Control Page (19h)
The Fibre Channel Port Control mode page reports port behavior for the Fibre Channel Protocol. This mode
page is not available on the SCSI interface. This mode page is only supported by devices at LUN 0.
Parameters Savable (PS) - This page is not savable, and this field is set to zero.
Page Code - This field identifies the Fibre Channel Port Control mode page and returns 19h.
Parameter List Length - This field is set to 06h.
Protocol Identifier – This field returns 0 to indicate the Fibre Channel protocol.
Disable Target Fabric Discovery (DTFD) – A DTFD bit of one indicates that if the target is attached by an
arbitrated loop, it will not recognize the presence of a fabric loop port on the loop. The target will perform
only the private loop functions defined for targets defined by FC-PLDA and FC-TAPE. When this bit is set
to zero, and the target is attached by an arbitrated loop, it will discover a fabric loop port if present on the
loop and perform the public loop functions defined for targets by FC-FLA. This field is ignored if the target
is not attached to an arbitrated loop.
Prevent Loop Port Bypass (PLPB) – This field is set to zero to indicate that the target allows the Loop Port
Bypass (LPB) and Loop Port Enable (PBE) primitive sequences to control the port bypass circuit and
participation on the loop as specified by FC-AL-2. When not attached to an arbitrated loop, this field is
ignored.
Disable Discovery (DDIS) – This field returns zero to indicate that the target will wait to complete target
discovery as defined by FC-PLDA, FC-FLA, and FC-TAPE before allowing processing of tasks to resume.
When not attached to an arbitrated loop, this field is ignored.
Disable Loop Master (DLM) –This field returns zero to indicate the target may participate in loop master
arbitration in the normal manner and, if successful, may become loop master during the loop initialization
process. This field is ignored when not attached to an arbitrated loop.
Require Hard Address (RHA) – A RHA bit of one indicates that if the target is attached to an arbitrated
loop, it will only attempt to obtain its hard address available in the SCA-2 SFF- 8067 connector or device
address jumpers during loop initialization. The target will not attempt to obtain an address during the LISA
phase of initialization. If there is a conflict for the hard address selection during loop initialization or the target
does not have a valid hard address available, the target shall enter the nonparticipating state. If the target
detects loop initialization while in the nonparticipating state, the target will again attempt to get its hard
Table 39 Fibre Channel Port Control Page (19h)
Bit
Byte
7 6 5 4 3 2 1 0
0 PS Rsvd Page Code (19h)
1 Parameter List Length = 06h
2 Reserved Protocol Identifier (0h)
3 DTFD PLPB DDIS DLM RHA ALWI DTIPE DTOLI
4 Reserved
5 Reserved
6 Reserved RR_TOV Units
7 Resource Recovery Time-out Value (RR_TOV)