HP StorageWorks Multi-protocol Router Installation Guide (A7437-96003, September 2005)

Glossary102
P
packet A set of information transmitted across a network.
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.
path selection The selection of a transmission path through the fabric. HP 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.
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.
point-to-point A fibre channel topology that employs direct links between each pair of communicating
entities.
port cage The metal casing extending out of the fibre channel port on the switch, and into which a
GBIC or SFP transceiver can be inserted.
Port_Name The unique identifier assigned to a fibre channel port. Communicated during login and
port discovery.
POST Power On Self-Test. A series of tests run by a switch after it is powered on.
primary FCS
switch
Primary fabric configuration server switch. The switch that actively manages the
configuration and security parameters for all switches in the fabric.
private loop An arbitrated loop that does not include a participating FL_Port.
private NL_Port An NL_Port that communicates only with other private NL_Ports in the same loop and
does not log into the fabric.
public device A device that supports arbitrated loop protocol, can interpret 8-bit addresses, and can
log into the fabric.
public loop An arbitrated loop that includes a participating FL_Port, and may contain both public
and private NL_Ports.
public NL_Port An NL_Port that logs into the fabric, can function within either a public or a private
loop, and can communicate with either private or public NL_Ports.