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58 Fibre Channel Interface Manual, Rev. D
9.2.1 Port Login (PLOGI) (02x)
Port Login (PLOGI) is sent by the initiator to a drive to establish the Fibre Channel operating parameters. The
PLOGI causes any open exchanges (commands) the initiator may have queued in the drive to be discarded.
Field definitions (listed alphabetically)
Class 1 and 2 Service Parameters
May be present in the PLOGI frame. The drive checks only for class 3 service parameters.
Class 3 Service Parameters
Required by the drive. See Table 26 on page 62.
LS Command Code (Link Services Command Code)
03h PLOGI payload.
N_Port Common Service Parameters
See Table 24 on page 60.
Port Name and Node Name
Used to identify the device. The device may have multiple Fibre Channel ports with each having a unique Port Name. The
drive is a dual-ported device.
The Port and Node Names in the PLOGI identify the initiator. The drive saves the Port Name of the initiator with the login
parameters. If a change of the Port Name/AL_PA address association is detected during a Port Discovery (PDISC), an
implicit logout occurs (any queued commands for the previous Port Name/AL_PA are discarded, the previous login is
cleared) and a LS_RJT is returned to the initiator.
The Port and Node Names in the Port Login Accept (PLOGI ACC) identify the drive. The drive uses a format for the Port
and Node Names defined as the IEEE extended address. See Table 23.
Table 22: PLOGI Payload
Bit
Byte
76543210
000000011
100000000
200000000
300000000
LS Command Code
4-19
N_Port Common Service Parameters
20-27
Port Name
28-35
Node Name
36-51
Class 1 Service Parameters
52-67
Class 2 Service Parameters
68-83
Class 3 Service Parameters
84-99
Reserved
100-115
Vendor Version
Table
number
22
22
22
22
22