Fibre Channel Port Login - Seagate ST39102FC Product Manual

34
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
16-31 XX XX XX
32-35 NN NN NN
36-47
48-51 XX XX XX
52-63
64-67 XX XX XX
68-79
80-83 OS OS XX
84-95
96-99 XX XX XX
100-111
112-115 XX XX XX
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
Random relative offset
Valid version level
N_Port/F_Port
Alternate credit model
Other bits reserved
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
Intermix
Stacked connection req.
Sequential delivery
Other bits reserved
IC Initiator control
MSB XID reassign
Proc Assc
Other bits
CS Concurrent sequences
OS Open sequences per exchange
00 09 09 BB BB
XX PN PN PN PN
NN
XX XX XX XX
XX
XX XX XX XX
XX
SO SO IC IC
XX
XX XX XX XX
XX
XX XX XX XX
XX
Must = 1
Not checked. Port Login Accept will return a 0—not supported.
x
Must = 0, N_Port
Must = 1
xxx XX
Must = 1
x
xx
x
xxx XX
xx
10 or 11 causes the login to be rejected. Other values are accepted.
XXX
Must be a value greater than 0.
Must be a value greater than 0.
Cheetah 9LP FC Product Manual, Rev. C
CF XX FS FS XX
PN PN PN PN NN
XX XX XX XX XX
XX XX XX XX XX
XX XX FS FS XX
XX XX XX XX XX
XX XX XX XX XX
XX XX XX Common
NN NN NN
XX XX XX Class 1
XX XX XX Class 2
CS XX XX Class 3
XX XX XX Reserved
XX XX XX Vendor
Version