LAN Configuration and Management Manual

Introduction to the SLSA Subsystem
LAN Configuration and Management Manual—520469-012
2-11
SLSA Subsystem SCF Objects
SLSA Subsystem SCF Objects
The SCF objects for the SLSA subsystem consist of manager and monitor processes
and several other objects that correspond to components of the adapters that connect
the LANs to the server.
The PROCESS and MONITOR objects correspond to the process used to manage
(LANMAN) and monitor (LANMON) the SLSA subsystem through SCF.
The SCF objects related to adapters are the ADAPTER, SAC, LIF, and PIF objects.
The SAC and PIF objects correspond directly to the adapter’s hardware. The LIF
objects correspond to logical processes running on the system that are used for
handling data transferred between the LAN and a system using the ServerNet
architecture. The LIF provides an interface to the PIF. Figure 2-4 on page 2-8 shows
the relationship between the SLSA SCF objects as they correspond to an Ethernet
adapter. (The dashed lines in Figure 2-4 indicate the data path.)
Processes
The SLSA subsystem processes manage and control the SLSA subsystem. The
manager process is the LAN Manager (LANMAN) process.
The LANMAN process is the central point of management for all LAN connectivity in an
Integrity NonStop NS-series or NonStop S-series server. The LANMAN process runs
as a process pair in processors 0 and 1 only (the same processors as the system
disk). LANMAN performs the following tasks:

Accepts all Distributed Systems Management (DSM) requests from the SCF
product module through the Subsystem Control Point (SCP).

Starts a LAN Monitor (LANMON) process in each processor and maintains it
persistently across failures.

Assigns ownership of ServerNet addressable controllers (SACs) to specific
LANMON processes for management purposes.
LANMAN begins running as a persistent generic process at system startup with the
name $ZZLAN.