LAN Configuration and Management Manual

Introduction to the SLSA Subsystem
LAN Configuration and Management Manual—520469-012
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LAN Service Providers
ServerNet adapters and uses system-library routines accessible to LAN
service-provider processes (such as TCP/IP).
LAN Service Providers
Local area network (LAN) service providers are processes that use the SLSA
subsystem to send and receive data on a LAN attached to the system. Four directly
attached LAN service providers are supported: HP NonStop TCP/IP (includes
conventional TCP/IP, Parallel Library TCP/IP, and NonStop TCP/IPv6),
HP NonStop Expand, NonStop IPX/SPX, and PAM, which provide access for the
following:
LAN Clients
LAN clients are processes, user applications, or subsystems that use the SLSA
subsystem and related LAN service providers to connect to the Ethernet or token-ring
LANs attached to an Integrity NonStop NS-series or NonStop S-series server. In
addition, the WAN subsystem is a client of the SLSA subsystem because the WAN
subsystem uses the SLSA Ethernet LAN to access the SWAN concentrator.
QIO API clients Protocol subsystems that communicate with a
LAN-transport service provider directly through QIO. These
clients are:

Expand products connecting through the QIO
application program interface (API) to TCP/IP to provide
Expand/IP capability.

WAN input/output process (WAN I/O process) drivers
connecting through the QIO API to TCP/IP to provide
access to remote ServerNet wide area network (SWAN)
concentrators.
Socket library
applications
User applications and HP protocols (such as TELSERV and
FTP) that use the socket library to establish remote
connections and communicate through TCP/IP and
IPX/SPX.
SNAX SNAX applications running over the token-ring LAN.
Expand Expand traffic over ATM.