Fabric OS Reference Manual

286 Fabric OS Reference Manual
Fx_Port Fabric port that can operate either as F
_
Port or FL
_
Port. See also F
_
Port,
FL
_
Port
.
G_Port Generic Port. Port that can operate either as E
_
Port or F
_
Port. Ports are
defined as G_Ports when disconnected or have not assumed a specific
function within fabric.
Gateway IP address assignment that provides translation for incompatible networks.
For example, ATM gateway can connect a fibre channel link to an ATM
connection.
GBIC Gigabit Interface Converter. Removable serial transceiver module that
allows gigabit physical-layer transport for fibre channel.
Gbps Gigabits (1,062,500,000 bits) per second.
GBps Gigabytes (1,062,500,000 bytes) per second.
Half-duplex Mode of communication that allows a port to either transmit or receive
frames, but not both at once. The only exception is link control frames, which
can be transmitted at any time. See also Full-duplex.
Hard address The AL_PA that an NL_Port attempts to acquire during loop initialization.
HBA Host Bus Adapter. Interface card between a server or workstation bus and
the fibre channel network. Similar to a network interface card.
Hub Fibre channel wiring concentrator that collapses loop topology into physical
star topology. Nodes are automatically added when active and removed when
inactive.
Idle Continuous transmission of an ordered set when no data is being transmitted
to maintain an active fibre channel link and synchronization. See also Fill
word.
Initiator Server or workstation that initiates communications with storage devices
over a fibre channel network. See also Target.
IOD In Order Delivery. A parameter that, when set, guarantees that frames are
delivered in-order if possible, and dropped if not.
ISL Interswitch Link. Fibre channel link from the E_Port of one switch to the
E_Port of another.