SWAN Concentrator and WAN Subsystem Troubleshooting Guide

Glossary
SWAN Concentrator and WAN Subsystem Troubleshooting Guide—426992-008
Glossary-12
WAN
WAN. See wide area network (WAN).
WAN driver. The four WAN drivers on each communications line interface processor
(CLIP), async, bitsync, bytesync, and X.21, provide a procedure interface used by the
data link control (DLC) task to access SSC3 or SSC4.
WAN manager process. Provided as part of the WAN subsystem, the WAN manager
process is started and managed by the NonStop Kernel subsystem SCF interface. It is
started as a generic process and runs as a NonStop process pair in the system
processors. The WAN manager process starts and manages the WAN subsystem
objects including the ConMgr and WANBoot processes. The WAN manager process is
named $ZZWAN. See also WAN subsystem SCF interface, ConMgr process, and
WANBoot process.
WAN port. Depending on the type of SWAN concentrator, a concentrator has either six or
twelve WAN ports, which provide a data channel that connects to other devices or
computers. See also interface converter cable.
WAN shared driver. Provided as part of the WAN subsystem, the WAN shared driver
provides a simplified interface to TCP/IP for use by IOPs. The shared driver interface is
similar to that provided by DOIOPLEASE in earlier NonStop servers.
WAN subsystem SCF interface. The SCF commands supported specifically for the WAN
subsystem. WAN subsystem SCF commands are directed to the WAN manager
process.
WANBoot process. Provided as part of the WAN subsystem, the WANBoot process runs
as a NonStop process pair in each processor that supports an HP NonStop TCP/IP
process that is supporting WAN communications. WANBoot implements the BOOTP
protocol. It provides management functions to the WAN subsystem and the WAN
DEVICE objects such as downloading IP addresses to the SWAN concentrator and
updating the firmware on each CLIP on the SWAN concentrator. See also WAN
subsystem SCF interface, Simple Network Management Protocol (SNMP), BOOTP,
BOOTP client
, and BOOTP daemon.
wide area network (WAN). A communications system that connects geographically
dispersed sites or local area networks (LANs). WANs are primarily used to
interconnect an organization’s voice, video, data, and computer business systems
including LANs. A WAN links these communications systems outside the organization’s
properties and crosses public areas that are regulated by local, national, or
international authorities.
X.21. CCITT standard for connecting terminals and modems for synchronous connection on
public data networks (PDNs).
X25 Access Method (X25AM) subsystem. X25AM enables a NonStop system to connect
to public or private data networks conforming to the CCITT X.25 Recommendation. It is
used by applications and terminals on a NonStop system to communicate with host
computers or terminals in an X.25 network.