Product manual

32 Cheetah 4LP FC Product Manual, Rev. A
Table 5: N_Port login (PLOGI) payload
Bytes
0-15 03 00 00 00 09 09 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.
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
Must = 1
Not checked. Port Login Accept will return a 0—not supported.
x
Must = 0, N_Port
Must = 1
XXX
FS Receive buffer field size. The FS field in the common and Class 3 parameters is checked for the range 128< FS <
2112 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 during a Port DISCovery, an implicit logout occurs and a LS_RJT is returned to the initiator.
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 required
Sequential delivery
Other bits reserved
Must = 1
x
xx
x
xxx
IC Initiator control
MSB XID reassign
Proc Assc
ACK_0
ACK_N
xx
10 or 11 causes the login to be rejected. Other values are accepted.
xx
xx
CS Concurrent sequences Must be a value greater than 0.
OS Open sequences per exchange Must be a value greater than 0.