Seagate Fibre Channel Interface - Manual (Page 392)

378 Fibre Channel Interface Manual, Rev. D
m
Meter.
MAC
Media Access Control.
Mandatory
A function which is required to be supported by a compliant implementation of FC-PH.
MAS
Master of link.
Mb
Mega bit.
MB
Mega byte.
MBd
Mega baud.
Meaningful
A control field or bit shall be applicable and shall be interpreted by the receiver, wherever it is specified as
meaningful. Wherever it is specified as “not meaningful,” it shall be ignored (see valid).
MM
Multimode.
Mode-partition noise
Noise in a laser based optical communication system caused by the changing distribution of laser energy par-
titioning itself among the laser modes (or lines) on successive pulses in the data stream. The effect is a differ-
ent center wavelength for the successive pulses resulting in arrival time jitter attributable to chromatic
dispersion in the fibre.
ms
Millisecond.
ms
Microsecond.
N_Port
A hardware entity which includes a Link_Control_Facility. It may act as an originator, a responder, or both.
N_Port
Node_Port.