TCP/IP Configuration and Management Manual

Glossary
TCP/IP Configuration and Management Manual—427132-004
Glossary-9
Internet address
Internet address. The 32-bit address assigned to hosts that want to participate in the
Internet using TCP/IP. Internet addresses are the abstraction of physical hardware
addresses, just as the Internet is an abstraction of physical networks. Actually
assigned to the interconnection of a host to a physical network, an Internet address
consists of a network portion and a host portion. The partition makes routing efficient.
Internet Control Message Protocol (ICMP). An integral part of the Internet Protocol (IP)
that handles error and control messages. Specifically, gateways and hosts use ICMP to
send reports of problems about datagrams back to the original source that sent the
datagram. ICMP also includes an echo request/reply used to test whether a destination
is reachable and responding.
Internet Engineering Note (IEN). A series of notes developed in parallel to RFCs and
available across the Internet from the INIC. IENs contain many of the early theories on
the Internet.
Internet Protocol. The Internet standard protocol that defines the Internet datagram as the
unit of information passed across the Internet, and that provides the basis for the
Internet, connectionless, best-effort, packet-delivery service.
interoperability. The ability of software and hardware on multiple machines from multiple
vendors to communicate meaningfully.
IOP. Input/output process. An input/output process (IOP) is a privileged process, residing in
a NonStop system processor, which provides an application access to a
communications line.
IP. See Internet Protocol.
IP datagram. The basic unit of information passed across the Internet. An IP datagram is to
the Internet as a hardware packet is to a physical network. It contains source and
destination addresses, along with data.
ISO. See International Organization for Standardization (ISO).
LAN (local area network). Any physical network technology that operates at high speed
(usually tens of megabits per second through several gigabits per second) over short
distances (up to a few thousand meters).
LANMAN. See LAN manager (LANMAN) process.
LAN. See local area network (LAN).
LAN manager (LANMAN) process. The process provided as part of the ServerNet local
area network (LAN) systems access (SLSA) subsystem that starts and manages the
SLSA subsystem objects and the LAN monitor (LANMON) process and assigns
ownership of Ethernet adapters to the LANMON processes in the system. Subsystem
Control Facility (SCF) commands are directed to the LANMON processes for
configuring and managing the SLSA subsystem and the Ethernet adapters.