HP StorageWorks 2/8-EL quickloop fabric assist version 3.0.x user guide - Page 69

Ordered Set, Packet, Participating Mode, Path Selection, Phantom Address, Phantom Device, PLOGI

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Glossary Ordered Set A transmission word that uses 8B/10B mapping and begins with the K28.5 character. Ordered sets occur outside of frames, and include the following items: ■ Frame delimiters Mark frame boundaries and describe frame contents. ■ Primitive signals Indicate events. ■ Primitive sequences Indicate or initiate port states. Ordered sets are used to differentiate Fibre Channel control information from data frames and to manage the transport of frames. Packet A set of information transmitted across a network. See also Frame. Participating Mode A mode in which an L_Port in a loop has a valid AL_PA and can arbitrate, send frames, and retransmit received transmissions. See also L_Port, Non-participating Mode. Path Selection The selection of a transmission path through the fabric. The Compaq switches use the FSPF protocol. Phantom Address An AL_PA value that is assigned to an device that is not physically in the loop. Also known as phantom AL_PA. A twenty-bit public address created for an 8-bit loop device to allow public devices to access it. Phantom Device A device that is not physically in an arbitrated loop, but is logically included through the use of a phantom address. PLOGI Port Login; the port-to-port login process by which initiators establish sessions with targets. See also FLOGI. Point-to-point A Fibre Channel topology that employs direct links between each pair of communicating entities. See also Topology. Port Cage The metal casing extending out of the optical port on the switch, and in which the SFP can be inserted. Quickloop Fabric Assist User Guide 69

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Glossary
69
Quickloop Fabric Assist User Guide
Ordered Set
A transmission word that uses 8B/10B mapping and begins with the K28.5 character.
Ordered sets occur outside of frames, and include the following items:
■
Frame delimiters
Mark frame boundaries and describe frame contents.
■
Primitive signals
Indicate events.
■
Primitive sequences
Indicate or initiate port states.
Ordered sets are used to differentiate Fibre Channel control information from data frames
and to manage the transport of frames.
Packet
A set of information transmitted across a network. See also
Frame
.
Participating Mode
A mode in which an L_Port in a loop has a valid AL_PA and can arbitrate, send frames, and
retransmit received transmissions. See also
L_Port
,
Non-participating Mode
.
Path Selection
The selection of a transmission path through the fabric. The Compaq switches use the FSPF
protocol.
Phantom Address
An AL_PA value that is assigned to an device that is not physically in the loop. Also known
as phantom AL_PA.
A twenty-bit public address created for an 8-bit loop device to allow public devices to
access it.
Phantom Device
A device that is not physically in an arbitrated loop, but is logically included through the
use of a phantom address.
PLOGI
Port Login; the port-to-port login process by which initiators establish sessions with targets.
See also
FLOGI
.
Point-to-point
A Fibre Channel topology that employs direct links between each pair of communicating
entities. See also
Topology
.
Port Cage
The metal casing extending out of the optical port on the switch, and in which the SFP can
be inserted.