NonStop S-Series Operations Guide (G06.24+)

Communications Subsystems: Monitoring and
Recovery
HP NonStop S-Series Operations Guide—522459-007
6-3
Local Area Networks (LANs) and Wide Area
Networks (WANs)
Processes that use the SLSA subsystem to send and receive data on a LAN attached
to a NonStop S-series server are called LAN service providers. Three service
providers—the NonStop TCP/IP subsystem and Parallel Library TCP/IP subsystem,
the Port Access Method (PAM), and NonStop IPX/SPX—are currently supported. They
provide access for these subsystems:
Processes, user applications, and subsystems that use the SLSA subsystem and
related LAN providers to connect to an Ethernet, a Fast Ethernet, a Gigabit Ethernet, a
Gigabit 4-port Ethernet or a token-ring LAN attached to a NonStop S-series server are
called LAN clients. For example, the WAN subsystem is a client of the SLSA
subsystem because the SLSA subsystem provides the WAN subsystem access to the
ServerNet wide area network (SWAN) concentrator through the LAN.
The WAN subsystem is used to control access to the SWAN concentrator. Depending
on your configuration, it can be used to configure and manage both WAN and LAN
connectivity for these communication subsystem objects:
LAN Service Provider Subsystems Supported
NonStop TCP/IP subsystem,
Parallel Library TCP/IP
subsystem, NonStop TCP/IPv6
subsystem
The Expand subsystem, which provides Expand-over-
IP connections.
Port Access Method (PAM) Ethernet and token-ring LANs. The OSI/AS, OSI/TS,
SNAX/XF, and SNAX/APN subsystems communicate
with SLSA through the PAM subsystem.
NonStop IPX/SPX Novell NetWare LAN
Object Connectivity By
AM3270 Line-handler processes
Asynchronous Terminal
Process 6100 (ATP6100)
Line-handler processes
ServerNet/FX Line-handler processes
Communications Process
subsystem (CP6100)
Line-handler processes
SNAX/APN Subsystem service manager process and line-
handler processes
Envoy subsystem Line-handler processes
SNAX/XF Subsystem service manager process and line-
handler processes
EnvoyACP/XF Line-handler processes
TR3271 Line-handler processes