Sun Microsystems Sun Fire X4150 - Manual (Page 139)

Glossary 123
Platform Event Filter
(PEF) A mechanism that configures the service processor to take selected actions
when it receives event messages, for example, powering off or resetting the
system or triggering an alert.
Platform Event Trap
(PET) A configured alert triggered by a hardware or firmware (BIOS) event. A PET is
an Intelligent Platform Management Interface (IPMI)–specific, Simple Network
Management Protocol (SNMP) trap, which operates independently of the
operating system.
port The location (socket) to which Transmission Control Protocol/Internet Protocol
(TCP/IP) connections are made. Web servers traditionally use port 80, the File
Transfer Protocol (FTP) uses port 21, and Telnet uses port 23. A port enables a
client program to specify a particular server program in a computer on a
network. When a server program is started initially, it binds to its designated
port number. Any client that wants to use that server must send a request to
bind to the designated port number.
port number A number that specifies an individual Transmission Control Protocol/Internet
Protocol (TCP/IP) application on a host machine, providing a destination for
transmitted data.
power cycling The process of turning the power to a system off then on again.
power-on self-test
(POST) A program that takes uninitialized system hardware and probes and tests its
components at system startup. POST configures useful components into a
coherent, initialized system and hands it over to the OpenBoot PROM. POST
passes to OpenBoot PROM a list of only those components that have been
successfully tested.
PowerPC An embedded processor.
Preboot Execution
Environment (PXE) An industry-standard client-server interface that enables a server to boot an
operating system (OS) over a Transmission Control Protocol/Internet Protocol
(TCP/IP) network using Dynamic Host Configuration Protocol (DHCP). The
PXE specification describes how the network adapter card and BIOS work
together to provide basic networking capabilities for the primary bootstrap
program, enabling it to perform a secondary bootstrap over the network, such
as a TFTP load of an OS image. Thus, the primary bootstrap program, if coded
to PXE standards, does not need knowledge of the system’s networking
hardware.
Privacy Enhanced Mail
(PEM) A standard for Internet electronic mail that encrypts data to ensure privacy
and data integrity.