Seagate Cheetah ST173404FC, Product Manual

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Cheetah 73FC Product Manual, Rev. C 41
9.1.9 Fibre Channel fabric accept login
Table 11 lists the required content of the Fabric Login Accept (ACC) payload from the fabric.
Table 12: Fabric Login Accept (ACC) payload
Bytes
0-15 02 00 00 00 XX XX BB BB CF XX FS FS R_ A_ T0 V_ Common
16-31 E_ D_ T0 V_ 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 xx xx XX XX FS FS XX xx 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 fabric login.
MSB Continuously increasing offset x
Random relative offset x
Valid version level x
N_Port/F_Port Must = 1, F_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. The receive buffer field size in the Class 3 parameters is used. The drive uses the lower FS of Fabric Login
Accept or N_Port Login when sending frames to an initiator.
PN Port Name. The fabric port name is saved with the login parameters. If a change of the port name is detected during a FAN, an
implicit logout occurs and a LS_RJT is returned to the fabric.
NN Node Name. The drive does not check or save the node name.
SO Service Options—Class 3 only.
MSB Class valid Must = 1
Intermix x
Stacked connection req. xx
Sequential delivery Must = 1
Other bits reserved xxx XX