6760 ServerNet/DA Manual

Glossary
6760 ServerNet/DA Manual—424879-003
Glossary-56
NNA
NNA. See node-numbering agent (NNA).
NNA PIC. See node-numbering agent (NNA) plug-in card (PIC).
node. (1) A uniquely identified computer system connected to one or more other computer
systems in a network. See also Expand node
and ServerNet node. (2) An endpoint in
a ServerNet fabric, such as a processor or ServerNet addressable controller (SAC).
node number. A number used to identify a member system in a network. The node number
is usually unique for each system in the network. See also node
and ServerNet node
number.
node-numbering agent (NNA). A field-programmable gate array (FPGA) in a single-mode
fiber-optic (SMF) plug-in card (PIC) that translates the node number of each ServerNet
packet entering or exiting the external ServerNet fabrics.
node-numbering agent (NNA) plug-in card (PIC). A plug-in card (PIC) for the modular
ServerNet expansion board (MSEB) that supports the node-numbering agent (NNA)
interface.
node routing ID. See ServerNet node routing ID.
noncanonical input mode. For an Open System Services (OSS) process, a terminal input
mode in which data is made available to the process when a timer expires or when a
certain number of characters have been entered. Noncanonical data is not grouped
into logical lines of input. This mode is sometimes called block mode or transparent
mode. Contrast with canonical input mode
.
nonclustered. Lacking the quality of belonging to a cluster.
nonconfigured object. An object that comes into existence after Subsystem Control
Facility (SCF) is running and that was created in response to activity outside the SCF
environment. An SCF STATUS command can display the name of a nonconfigured
object, but its state is UNKNOWN.
nonessential firmware. Code that is used for support routines such as self-test diagnostics
and that can be overwritten during flash programming without affecting the next
power-up operation. Contrast with essential firmware
.
noninteractive mode. A mode of operation that usually involves a command file (an EDIT
file that contains a series of commands). Contrast with interactive mode
.
nonlinear load. Electrical load for which the instantaneous current is not proportional to the
instantaneous voltage. Consequently, the local impedance varies with the voltage.
nonsensitive command. A command that can be issued by any user or program that is
allowed access to a subsystem—that is, a command on which the subsystem imposes
no further security restrictions. For Subsystem Control Facility (SCF), nonsensitive