LAN Configuration and Management Manual

Introduction to the SLSA Subsystem
LAN Configuration and Management Manual—520469-012
2-12
SLSA Subsystem SCF Objects
Monitors
The monitor objects are the control processes in the SLSA subsystem. The LANMAN
process creates a monitor in each processor. If a monitor process fails, LANMAN
restarts it. Each LAN monitor (LANMON) performs the following functions:

Controls the access to specific adapters by:

Creating data structures representing all the adapters, SACs, physical
interfaces (PIFs), and logical interfaces (LIFs).

Handling all error reporting from the driver interrupt handlers (DIHs).

Providing trace facilities for all LAN access from its processor.

Broadcasts state changes for each SAC for which it has access to the other
LANMON processes in the system.
LANMON names have the form $ZZLAN.#ZLMnn, where nn indicates the particular
processor in which the LANMON is running. For example, $ZZLAN.#ZLM01 indicates
the LANMON process running in processor 01 of the system.
Adapters
Ethernet adapters and their ports are the primary hardware components that provide a
NonStop S-series or NonStop NS-series system LAN access. The Ethernet ports
support one or more SACs. Adapters are installed in a system enclosure or IOAM
enclosure and connect to the enclosure through the ServerNet SAN. In a Versatile I/O
(VIO) enclosure, Ethernet ports in slots 6 or 7 function like G4SAs and are treated as
G4SAs by the Integrity NonStop NS-series system. (The VIO enclosure is available in
H06.08 and later H-series RVUs.) For more information about the VIO enclosure, see
the Versatile I/O Manual.
Adapter names use the form $ZZLAN.adapter-name, where adapter-name consists of
up to eight alphanumeric characters with a leading alphabetic character, for example:
$ZZLAN.MIOE0 or $ZZLAN.G4SA1. (See HP Manufacturing Naming Conventions
(G06.26 and Earlier RVUs) on page 3-2 for information about preconfigured naming
conventions and suggestions for naming your adapters.)
Note. As of the G06.21 RVU, a new LANMON can be installed without a cold load. Refer to
Replacing a LANMON Without a Cold Load
on page 5-10 for more information.
Note. J-Series RVUs and NonStop BladeSystems have different architecture and networking
considerations. For more information, see the HP NonStop Networking Overview or the
NonStop BladeSystem Planning Guide.