Technical data

a remote system (server) to execute a designated procedure, using supplied
arguments, and the remote system returns the result to the local system.
operator communication manager
A system administration tool for communicating with users and operators on the
system.
OSPF (Open Shortest Path First)
One of a class of interior gateway protocols, described in more detail in the OSPF
section of
gated.proto(4)
.
open system
A nonproprietary, interoperable system with communications software.
Open System Interconnection (OSI)
A suite of protocols, designed by ISO committees, to be the international standard
of computer network architecture.
OpenVMS Cluster
A configuration of OpenVMS processors in which the network sees the cluster as
one system with one name, the cluster alias.
OpenVMS Cluster alias
An alias that allows remote hosts to address the cluster members as one host, as
well as any cluster member individually.
OpenVMS file system
The OpenVMS files and directories on a mounted OpenVMS volume. These files
and directories reside on a Files-11 On-Disk Structure (ODS-2 or ODS-5) disk.
origination
The beginning point of communications on a circuit.
overmounting
The process of NFS mounting another directory over an existing mount point.
The original file system is dismounted from the mount point, and the new file
system is mounted.
packet
A unit of data sent across a network.
Packet Internet Groper (PING)
A program used to test reachability of a destination by sending an ICMP echo
request and waiting for a reply. See also loopback.
packet looping
A condition in which a packet revisits a node. See also aged packet.
packet size
The amount of data in a packet.
packet switching
A communication paradigm in which packets are individually routed between
hosts, with no previously established communication path.
path
The physical lines between source nodes and destination nodes; can comprise a
sequence of connected nodes. The path that the data takes through the network
is transparent to users.
Glossary–32