Introduction to Networking for NonStop S-Series Servers

Glossary
Introduction to Networking for HP NonStop S-Series Servers—520670-005
Glossary-20
ServerNet/FX adapter subsystem
ServerNet/FX adapter subsystem. The HP subsystem that enables a NonStop S-Series
server to communicate with Cyclone and NonStop K-series servers in a FOX ring. See
also Expand-over-FOX line-handler process and FOX ring.
ServerNet LAN systems access (SLSA) subsystem. A subsystem of the NonStop Kernel
operating system. The SLSA subsystem enables the protocol input-output (I/O)
processes (IOPs) and drivers to access the ServerNet adapters.
ServerNet SAN. See ServerNet system area network (ServerNet SAN).
ServerNet system area network (ServerNet SAN). A wormhole-routed, full-duplex,
packet-switched, point-to-point network designed with special attention to reducing
latency and ensuring reliability. The ServerNet SAN provides the communications path
used for interprocessor messages and for communication between processors and I/O
devices.
ServerNet wide area network (SWAN) concentrator. (1) An HP data communications
peripheral that provides connectivity to an HP 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. (2) A collective term for both
SWAN concentrators and SWAN 2 concentrators when a distinction between the two is
not required.
ServerNet wide area network (SWAN) 2 concentrator. An HP data communications
peripheral that provides connectivity to an HP NonStop S-series server. The SWAN 2
concentrator supports both synchronous and asynchronous data over RS-232,
RS-449, X.21, and V.35 electrical and physical interfaces. The SWAN 2 concentrator is
the next-generation SWAN concentrator and has 12 WAN ports.
service class. A set of functional units negotiated at association establishment,
determining what kinds of operations can occur over the association. International
Standards Organization (ISO) File Transfer, Access, and Management (FTAM)
specifies five levels of service classes, four of which are supported by the HP FTAM
implementation. See also functional unit
.
session. In IBM Systems Network Architecture (SNA)
, a logical connection between two
logical units (LUs), possibly of different types. More generally, a temporary logical
connection between systems and devices.
Session Layer. Layer 5 of the Open Systems Interconnection (OSI) Reference Model,
responsible for coordination and synchronization of transmissions between
communicating entities.
Simple Network Management Protocol (SNMP). An asynchronous request-response
protocol used for network management. SNMP originated as a means for managing
Transmission Control Protocol/Internet Protocol (TCP/IP) and Ethernet networks. The
TSM package can include an SNMP-compliant interface for communication between
the TSM workstation and HP NonStop S-series server.