Computer Drive User Manual

52 Cheetah NS 10K.2 FC Product Manual, Rev. B
9.1.9 Fibre Channel fabric accept login
Table 14 lists the required content of the Fabric Login Accept (ACC) payload from the fabric.
Table 14: Fabric Login Accept (ACC) payload
Bytes
0-15 02 00 00 00 09 09 BB BB CF XX FS FS R_ A_ T0 V_ Common
16-31 E_ D_T0 V_ PNPNPNPNPNPNPNPNNNNNNNNN
32-35 NNNNNNNN
36-47 XXXXXXXXXXXXXXXXXXXXXXXXClass 1
48-51 XXXXXXXX
52-63 XXXXXXXXXXXXXXXXXXXXXXXXClass 2
64-67 XXXXXXXX
68-79 SOSOxxxxXXXXFSFSXXxxXXXXClass 3
80-83 OSOSXXXX
84-95 XXXXXXXXXXXXXXXXXXXXXXXXReserved
96-99 XXXXXXXX
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