LAN Configuration and Management Manual

Introduction to the SLSA Subsystem
LAN Configuration and Management Manual—520469-012
2-3
Overview of SLSA
Table 2-2. SLSA Data Structures in Adapters
SLSA Data Structure Description
Logical interface (LIF) Allows QIO clients (NonStop TCP/IP and IPX/SPX) to
connect their queues to one or more PIFs.
For more information about LIFs, see Logical Interface
(LIF) on page 2-15.
Physical interface (PIF) Represents the physical connection to the LAN. The PIF
is an abstraction that is used to transmit MAC-layer
statistics and information. Data travels from an NSK
system to the outside world by using the PIF.
For more information about PIFs, see Physical Interface
(PIF) on page 2-15.
Servernet addressable
controller (SAC)
An object that represents the entry point from the adapter
into the ServerNet router. Each SAC has a unique
ServerNet address, assigned when the adapter is started.
Data from the outside world (symbolized by the PIF) is
routed to the correct processor by the SAC.
For more information about SACs, see ServerNet
Addressable Controller (SAC) on page 2-15.