NBT Manual

Glossary
NBT Manual—424773-001
Glossary-5
Distributed Systems Management
Distributed Systems Management. A set of tools used to manage NonStop systems and
EXPAND networks. These tools include the VIEWPOINT console application, the
Subsystem Control Facility (SCF) for data communications subsystems, the Subsystem
Programmatic Interface (SPI), the Event Management Service (EMS), the Distributed
Name Service (DNS), and token-oriented programmatic interfaces to the management
processes for various Compaq subsystems.
distributor. An EMS process that distributes event messages from event logs to requesting
management applications, to Guardian console message destinations, or to a collector on
another node. See also consumer distributor.
and compatibility distributor. Contrast
collector.
DNS (Domain Name Server). See Domain Name Server
.
Domain Name Server. A method for naming resources. The basic function of the domain
name server is to provide information about network objects by answering queries.
Domain. In the Internet, a part of the naming hierarchy. Syntactically, a domain name
consists of a sequence of names (labels) separated by periods (dots).
DSC. See Dynamic System Configuration (DSC).
DSM. See Distributed Systems Management.
Dynamic System Configuration (DSC). A facility that allows system managers to make
online changes to the configuration of devices and controllers. Its interactive utility
program is called the Configuration Utility Program (COUP). DSC is not used to
configure Compaq OSI subsystem objects, but can be used to configure the underlying
X25AM and TLAM objects.
E4SA. See Ethernet 4 ServerNet adapter (E4SA)
.
ECHO. The name of a program used in the Internet to test the reachability of destinations by
sending them an ICMP echo request and waiting for a reply.
EGP (Exterior Gateway Protocol). The protocol used by a gateway in one autonomous
system to advise the Internet addresses of networks in that autonomous system to a
gateway in another autonomous system. Every autonomous system must use EGP to
advertise network reachability to the core gateway system.
empty response record. In DSM programmatic interfaces, a response record containing only
a return token with a value that means “no more response records.” See also return
token.
EMS (Event Management Service). See Event Management Service (EMS)
.
EMS standard definitions. The set of declarations provided by EMS for use in event
management, regardless of the subsystem. Any application that retrieves tokens from
event messages needs the EMS standard definitions. See also definition or definition
files. Comparedata communications standard definitions
or SPI standard definitions.