Seagate ST900MM0026 ユーザーズマニュアル

Savvio 10K.4 FC Product Manual, Rev. A

9.1.4

Fibre Channel port login

Table 8 identifies the required content of the N_Port Login (PLOGI) payload from an initiator.

Table 8:

N_Port login (PLOGI) payload

Bytes

0-15

Common

16-31

32-35

36-47

Class 1

48-51

52-63

Class 2

64-67

68-79

Class 3

80-83

84-95

Reserved

96-99

100-111

Vendor

112-115

Version

Indicates a four-bit (hex) field is not checked.

Indicates a single bit is not checked.

BB-Credit. This field is not checked. The FC-AL drive uses BB-Credit of zero (0).

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

N_Port/F_Port

Must = 0, N_Port

Alternate credit model

Must = 1

Other bits reserved

xxx XX

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.

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, and implicit logout occurs and the initiator returns a LS_RJT.

Node name. The node name is not checked or saved by the drive.

Service options Class 3 only.

MSB

Class valid

Must = 1

Intermix

Stacked connection req.

Sequential delivery

Other bits reserved

xxx XX

Initiator control

MSB

XID reassign

Proc Assc

10 or 11 causes the login to be rejected. Other values are accepted.

Other bits

XXX

Concurrent sequences

Must be a value greater than 0.

Open sequences per exchange

Must be a value greater than 0.