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Configuring Direct-Connect and Satellite-Connect

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QIO Subsystem

QIO is a mechanism for transferring data between processes through a shared

memory segment. The QIO subsystem is preconfigured and started during the system

load sequence. The QIO subsystem must be started before Expand line-handler

processes can be started.

For more information on the QIO subsystem, see the QIO Configuration and

Management Manual.

Wide Area Network (WAN) Shared Driver

The WAN shared driver is a set of library procedures that is bound with each input-

output process (IOP) that uses a ServerNet wide area network (SWAN) concentrator.

The WAN shared driver is a component of the WAN subsystem. The WAN subsystem

is preconfigured and starting during the system load sequence.

For more information on the WAN subsystem, see the WAN Subsystem Configuration

and Management Manual.

NonStop TCP/IP Process

The NonStop TCP/IP subsystem provides TCP/IP data communications connectivity.

NonStop TCP/IP processes are used by LAN adapters and SWAN concentrators. The

NonStop TCP/IP processes that support the adapter and SWAN concentrators are

preconfigured and started during the system load sequence.

For more information on the NonStop TCP/IP and the NonStop TCP/IPv6 subsystems,

see the TCP/IP Configuration and Management Manual and the TCP/IPv6

Configuration and Management Manual.

For more information on LAN adapters, see the LAN Configuration and Management

Manual.

Local Area Network (LAN) Driver and Interrupt Handlers (DIHs)

NonStop TCP/IP processes can interface to the network through the ServerNet LAN

Systems Access (SLSA) subsystem. The SLSA subsystem provides QIO-based driver

and interrupt handlers (DIHs) that allow NonStop TCP/IP processes to connect to a

LAN adapter. The SLSA subsystem is preconfigured and started during the system-

load sequence. For more information on the SLSA subsystem, see the LAN

Configuration and Management Manual.