Open System Services NFS SCF Reference Manual

Glossary
Open System Services NFS SCF Reference Manual—522582-001
Glossary-7
IP
information. NonStop Himalaya manuals often use the term “connectivity” in this
context, while other vendors use the term “connectivity” to mean hardware
compatibility.
IP. See Internet Protocol (IP)
.
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. International Organization for Standardization. ISO is an international body that drafts,
discusses, proposes, and specifies standards for network protocols. ISO is best known
for its seven-layer reference model that describes the conceptual organization of
protocols.
ISO is sometimes called the “International Standards Organization”; although ISO is the
official abbreviation, it does not correspond to the organization’s name in any language.
LAN. See local area network (LAN)
.
level 2. A reference to LINK LEVEL communication (for example, frame formats) or link-
level connections derived from the ISO seven-layer reference model. For long-haul
networks, level 2 refers to the communication between a host computer and a network
packet switch (for example, use of high-level data link control/link access procedure
balanced or HDLC/LAPB). For local area networks (LANs), level 2 refers to physical
packet transmission. Thus, a level 2 address is a physical hardware address.
level 3. A reference to NETWORK level communication derived from the ISO seven-layer
reference model. For the Internet, level 3 refers to the Internet Protocol (IP) and IP
datagram formats. Thus, a level 3 address is an Internet address.
link name. The filename associated with a specific file within a directory. The length of a
filename, and therefore the length of a link name, depends on the file system. Within the
NFS file system, link names can be up to 255 characters long and can contain any ASCII
characters except for the NUL (binary 0) and the slash (/); such link names are case-
sensitive. See also filename
.
little-endian. A format for storage or transmission of binary data in which the least-
significant bit or byte is delivered or processed first. See also big-endian
.
local area network (LAN). Any physical network technology that operates at high speed
(usually tens of megabits/second to several gigabits/second) over short distances (up to a
few thousand meters). Examples include Ethernet and proNET-10.
local mount. A mount that attaches the fileset associated with a server to the specified mount
point within the local directory hierarchy. The local mount is visible within the OSS
NFS subsystem and makes the files associated with the server available through the path
associated with the local mount point.