Seagate Cheetah 73LP FC ST336605FC, Product Manual

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36 Cheetah 73LP FC Product Manual, Rev. D
9.1.4 Fibre Channel port login
Table 6 identifies the required content of the N_Port Login (PLOGI) payload from an initiator.
Table 6: N_Port login (PLOGI) payload
Bytes
0-15 03 00 00 00 XX XX BB BB CF XX FS FS XX XX XX XX Common
16-31 XX XX XX XX PN PN PN PN PN PN PN PN NN NN NN NN
32-35 NN NN NN NN
36-47 XX XX XX XX XX XX XX XX XX XX XX XX Class 1
48-51 XX XX XX XX
52-63 XX XX XX XX XX XX XX XX XX XX XX XX Class 2
64-67 XX XX XX XX
68-79 SO SO IC IC XX XX FS FS XX CS XX XX Class 3
80-83 OS OS XX XX
84-95 XX XX XX XX XX XX XX XX XX XX XX XX Reserved
96-99 XX XX XX XX
100-111 XX XX XX XX XX XX XX XX XX XX XX XX Vendor
112-115 XX XX XX XX Version
X Indicates a four-bit (hex) field is not checked.
x Indicates a single bit is not checked.
BB BB-Credit. This field is not checked. The FC-AL drive uses BB-Credit of zero (0).
CF Common features. This binary field selects the common features requested by the initiator login.
MSB Continuously increasing offset Must = 1
Random relative offset Not checked. Port Login Accept will return a 0—not supported.
Valid version level x
N_Port/F_Port Must = 0, N_Port
Alternate credit model Must = 1
Other bits reserved xxx XX
FS Receive buffer field size. The FS field in the common and Class 3 parameters is checked for the range 128 < FS < 2,112 and a
multiple of four bytes. For multiple frame sequences, all frames but the last frame of the sequence must be this size. Only the
receive buffer field size in the Class 3 parameters is used.
PN Port name (initiator’s)—saved with the login parameters. If a change of the port name/AL_PA address association is detected dur-
ing a Port DISCovery, and implicit logout occurs and the initiator returns a LS_RJT.
NN Node name. The node name is not checked or saved by the drive.
SO Service options Class 3 only.
MSB Class valid Must = 1
Intermix x
Stacked connection req. xx
Sequential delivery x
Other bits reserved xxx XX
IC Initiator control
MSB XID reassign xx
Proc Assc 10 or 11 causes the login to be rejected. Other values are accepted.
Other bits XXX
CS Concurrent sequences Must be a value greater than 0.
OS Open sequences per exchange Must be a value greater than 0.