TCP/IP Configuration and Management Manual

Overview of NonStop TCP/IP
TCP/IP Configuration and Management Manual—427132-004
2-5
NonStop TCP/IP Interface to LAN, WAN, and ATM
networks
through the rest of the SLSA subsystem, which consists of ServerNet Addressable
Adapters (SACs) and PIFs, then out to a LAN, WAN, or X.25 connection. A brief
description of the SLSA components relevant to this discussion follows Figure 2-2. The
NonStop TCP/IP process interfaces to ATM adapters (ATM3SAs) through the ATM
subsystem which is not shown in Figure 2-2 (see Figure 2-1).
Figure 2-2. TCP/IP Relationship to the SLSA Subsystem
PIF
004VST .VSD
Processor
File
System
Interface
e
TCP/IP Applications
Socket Library
LANMON
LANMAN
SCF
LAN Drivers, Interrupt handlers (DIHs)
Y Fabric
X Fabric
Filters
LAN
QIO
Shared
Memory
Segment
SAC
LIF
SAC SAC
SAC
PIFPIF PIFPIF PIF PIF
PIF
LIFLIFLIFLIFLIF
LIF
LIF
TCP/IP
SLSA
Adapter
FESA,
E4SA, or
TRSA
SLSA
G4SA,
GESA,