Introduction to Networking for NonStop S-Series Servers

Glossary
Introduction to Networking for HP NonStop S-Series Servers—520670-005
Glossary-14
multipoint
reroutes data over remaining lines if one or more lines fail. See also line, path, and
route.
multipoint. A communications line connecting more than two data stations for data
transmission. See also point-to-point.
NAU. See network addressable unit (NAU).
NetBIOS. See network basic input/output system (NetBIOS).
NETNAM protocol. The protocol used by an Expand line-handler process to communicate
with a network access method (NAM). See also network access method (NAM).
network. A group of interconnected computer systems and devices and the hardware and
software used to connect them.
network access method (NAM). The interface through which an Expand-over-NAM line-
handler process communicates with an X25AM line-handler process or a SNAX/APN
line-handler process, and through which an Expand-over-ServerNet line-handler
process communicates with the ServerNet monitor process ($ZZSCL) and an Expand-
over-FOX line-handler process communicates with the FOX monitor process
($ZZFOX).
network addressable unit (NAU). Logical entities subject to individual reference and
allowing control and manipulation of node resources in an IBM Systems Network
Architecture (SNA) network.
network basic input/output system (NetBIOS). A legacy standard protocol for
communication among IBM personal computers (PCs) and equivalent devices.
network interface unit (NIU). A device used to connect terminals or other devices to a local
area network (LAN). An NIU can be either a separately packaged server or a card that
fits into a slot in the terminal or other device.
Network Layer. Layer 3 of the Open Systems Interconnection (OSI)
Reference Model,
responsible for routing data through a network.
node. A system or device that follows the protocols of a specific network and that other
systems or devices in that network can address.
node type (NT). A classification of IBM Systems Network Architecture (SNA)
network nodes
on the basis of the physical unit (PU) type associated with the node. For example, a
node containing a PU of type 4 is called a node type 4.
NonStop. Characterized by continued operation even when a component fails, or when
equipment is being repaired or replaced, or while new processors or peripheral devices
are being added to the system.