TCP/IP Configuration and Management Manual

Glossary
TCP/IP Configuration and Management Manual—427132-004
Glossary-14
return token
also contain error lists that include error tokens. A response can consist of multiple
response records, spread across one or more response messages. A response record
cannot be split between two response messages. If multiple response records are in a
response message, each response record is enclosed in a data list. See also data list
.
Each response record is required to contain a return token. See also return token
.
return token. In DSM programmatic interfaces, the token that indicates whether a
command was successful and, if not, why it failed. The token code for the return token
is ZSPI-TKN-RETCODE. Its value consists of a single integer field. Compare
error
token.
RFC (Request for Comments). See Request for Comments.
SAC. See ServerNet addressable controller (SAC).
SCF. See Subsystem Control Facility (SCF).
SCP. See Subsystem Control Point (SCP).
sensitive command. In DSM, a command that can be issued only by a restricted set of
Guardian users, such as the owner of a subsystem process. For data communications
subsystems, the sensitive commands are those that can change the state or
configuration of objects, start or stop tracing, or change the values of statistics
counters. Compare
nonsensitive command.
ServerNet adapter. A customer-replaceable unit (CRU) that connects peripheral devices to
the rest of the system through a ServerNet bus interface (SBI). A ServerNet adapter is
similar in function to an I/O controller logic board (LB) and backplane interconnect card
(BIC) in NonStop K-series servers.
ServerNet addressable controller (SAC). A controller that is uniquely addressable within
one or more ServerNet address domains (SADs) through the node ID and address
fields in a request packet. A SAC typically is implemented on some portion of a
processor multifunction (PMF) customer-replaceable unit (CRU), an I/O multifunction
(IOMF) CRU, or a ServerNet adapter.
ServerNet LAN Systems Access (SLSA) subsystem. A subsystem of the NonStop
operating system. The SLSA subsystem enables the protocol I/O processes (IOPs)
and drivers to access the ServerNet adapters.
ServerNet wide area network (SWAN) concentrator. A data communications peripheral
that provides connectivity to a NonStop S-series server. The SWAN concentrator
supports both synchronous and asynchronous data over RS-232, RS-449, X.21, and
V.35 electrical and physical interfaces.
service. A set of primitives (operations) that a layer provides to the layer above it. The
service defines what operations the layer can perform on behalf of its users, but not
how these operations are implemented. A service relates to an interface between two