Seagate ST3300955FC Fibre Channel fabric accept login, Fabric Login Accept ACC payload Bytes

9.1.9Fibre Channel fabric accept login

Table 13 lists the required content of the Fabric Login Accept (ACC) payload from the fabric.

Table 13: 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_

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

XIndicates 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

50 Cheetah NS FC Product Manual, Rev. B