NS3000/iX NMMGR Screens Reference Manual - Edition 8 (36922-90038)

330 Glossary
Glossary
local node The computer that
you are configuring or that you
are logged on to.
local switching A feature of the
DTC which permits back-to-back
configuration (for connections to
an HP 3000 MPE/V host), using
two ports of the same DTC. See
also closed user group.
local user group A list defined
for a particular DTC and card
that specifies which remote nodes
this DTC can send data to and
also which remote nodes this DTC
can receive data from.
logging The process of recording
the usage of network resources.
Events can be logged to both the
OpenView workstation and to the
MPE host.
logging class A number defining
the severity of any given event
logged. An operator uses the
logging classes to specify which
events are to be logged. Class 1
(catastrophic event) is always
logged.
logical device number (ldev)
A value by which operating
system recognizes a specific
device. All DTC devices that are
configured as nailed devices
through the NMMGR
configuration have ldev numbers
permanently assigned. The DTC
devices can then be accessed
programmatically through use of
their ldev number. Non-nailed
devices have ldev numbers that
are assigned from a pool of
available ldev numbers for the
life of their connection to a
system. Each nailed port
configured in NMMGR must have
a unique ldev number.
log off The termination of a job
or session.
log on The process of initiating a
job or session.
logon device See
session-accepting device.
loopback The routing of
messages from a node back to
itself.
LUG Local User Group. A list
defined for a particular DTC and
card that specifies which remote
nodes this DTC can send data to
and also which remote nodes this
DTC can receive data from. See
also local user group.
M
maintenance mode An
NMMGR character mode
interface used to manage both
network directory and
configuration files. It can be used
interactively, from within the
screen mode interface, or as a set
of commands entered via a batch
job.
map, network A drawing that
shows the topology of the
network. For networks managed
by the OpenView DTC Manager a
network map must be created
through use of the OVDraw