Specifications

Glossary-v
Glossary
The individual sections of the name might represent sites, groups, or computers,
but the domain system simply calls each section a label.
For example, the domain name super.dec.com, contains three labels: super, dec,
and com. Any suffix of labels in a domain name is called a domain. Thus, the
lowest level domain is super.dec.com, an abbreviation for the computer named
super. The second level domain is dec.com (for Digital Equipment Corporation);
and the top level domain is com (for commercial institution). As the example
shows, domain names are written with the most local label first and the topmost
domain last.
Domain Name System
See DNS.
downline loading
The process of sending the access server image from a load host to a access server.
DSR
Data Set Ready. A control signal that is used to inform whether or not a
communications device is ready to transmit and receive data.
DSVCONFIG
The configuration procedure used on a load host to configure the load host’s node
database.
DTR
Data Terminal Ready. A control signal that is used to inform whether or not a data
terminal is ready to transmit and receive data.
dump file
A file containing a copy of the access server memory. The load host creates this file
when it receives an upline dump from the access server. The file is stored on the
load host in the access server directory.
Ethernet
A type of local area network based on carrier-sense multiple-access/collision
detection (CSMA/CD).
event logging
This is a process of recording significant occurrences on the network.
failover
LAT. A failure-recovery function provided by LAT software. Failover occurs when
a user’s current LAT session is disrupted by the failure of the service node.
Failover attempts to connect the user to the same service on an alternative service