HP StorageWorks XPath OS 7.4.X Command Reference Guide (AA-RVHCC-TE, September 2005)

XPath OS 7.4.x command reference guide 295
PKI certification
utility
Public key infrastructure certification utility. A utility that makes it possible to collect certificate
requests from switches and to load certificates to switches. See also digital certificate, PKI.
PLA Programmable logic array. A small FPD.
PLD Programmable logic device. Interchangeable with FPD.
PLDA Private loop direct-attached. A technical report specifying a logical loop.
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 An SFP or a GBIC receptacle on a switch to which an optic cable for another device is
attached.
port address In Fibre Channel technology, the port address is defined in hexadecimal. A port address can
be defined by a domain and port number combination or by an area number.
port cage The metal casing extending out of the optical port on the switch, into which the SFP can be
inserted.
port card A hardware component that provides a platform for field-replaceable, hot-swappable ports.
port log A record of all activity on a switch, kept in volatile memory.
port log dump A view of what happens on a switch, from the switch's point of view. The portLogDump
command is used to read the port log.
port name A user-defined alphanumeric name for a port.
port swapping Port swapping is the ability to redirect a failed port to another port.
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 turned on.
PPP Point-to-Point Protocol.
primitive sequence An ordered set that is transmitted repeatedly and continuously. Primitive sequences are
transmitted to indicate specific conditions within or conditions encountered by the receiver
logic of an FC_Port. See OLS, NOS.
primitive signals An ordered set that indicates actions or events and requires just one occurrence to trigger a
response. IDLE and R_RDY are used in all three topologies: ARB, OPN, and CLS. MRK is used
in arbitrated loop.
principal switch The first switch to boot in a fabric. Ensures unique domain IDs among roles.
private device A device that supports arbitrated-loop protocol and can interpret 8-bit addresses but cannot
log in to the fabric.
private key The secret half of a key pair. See also key, key pair.
private loop An arbitrated loop that does not include a participating FL_Port.
private loop device A device that supports a loop and can understand 8-bit addresses but does not log in to the
fabric.
private NL_Port An NL_Port that communicates only with other private NL_Ports in the same loop and does not
log in to the fabric.
protocol A defined method and set of standards for communication. Determines the type of error
checking, the data-compression method, how sending devices indicate an end of message,
and how receiving devices indicate receipt of a message.
pstate Port State Machine.
PSU Power supply unit.
public device A device that supports arbitrated-loop protocol, can interpret 8-bit addresses, and can log in
to the fabric.
public key The public half of a key pair. See also key, key pair.