Datasheet

Fibre Channel Interface
1-28 C141-C008
(5) LIFA/LIPA/LIHA/LISA
This sub-section describes a process for each port to obtain AL_PA.
Figure 1.12 shows the process for non loop master to obtain unique AL_PA after
ending a process for selecting the loop master.
Other NL_Port on the loop
LIFA
Loop Master
LIPA
LIHA
LIRP
LILP
CLS
LISA
; LIFA is used to gather all fabric-assigned AL_PAs.
; LIPA is used to gather all previously-acquired AL_PAs.
The drive attempts to obtain same AL_PA if the drive obtained
the AL_PA in previous initilization.
; LIHA is used to gather all hard assigned AL_PAs.
The drive attempts to obtain AL_PA if it failed to obtain
AL_PA in LIPA.
The drive always attempts to obtain AL_PA when
a) powered on or
b) receiving LIP (AL_PD, A
L-PS)
The drive always attempts to
obtain same AL_PA.
; LISA is used to assign any remaining AL_PA bits.
The drive attempts to obtain AL_PA if it failed up to LIHA.
If the drive fails to obtain AL_PA in LISA, then the drive
goes into nonparticipating mode.
<== Each NL_Port obtains unique AL_PA here.
<== LIRP and LILP may be caused by the loop master to
confirm the location and address on the loop.
; LIRP is used to record the relative positions on the loop.
; LILP is used to inform all NL_Ports of their relative
positions on the loop from the loop master.
Figure 1.12 Loop master operation
The abbreviation in this section is below.
LIFA; Loop Initialization Fabric Assigned
LIPA; Loop Initialization Previously Acquired
LIHA; Loop Initialization Hard Assigned
LISA; Loop Initialization Soft Assigned
LIRP; Loop Initialization Report Position
LILP; Loop Initialization Loop Position