NonStop NS-Series Operations Guide (H06.12+)

Connectivity ByObject
Line-handler processesServerNet cluster (Expand-over-ServerNet)
Subsystem service manager process and line-handler
processes
SNAX/APN
Subsystem service manager process and line-handler
processes
SNAX/XF
Line-handler processesTR3271
Line-handler processesX25AM
You can define these communications subsystem objects as WAN subsystem devices.
Monitoring Communications Subsystems and Their Objects
Monitoring and recovery operations for communications subsystems can be complex. An error
in any of the components—service providers, clients, objects, adapters, processes, and so on—can
generate multiple error messages from many interdependent subsystems and processes. Analyzing
and solving an error that originates in an object controlled by a LAN or a WAN often requires
that you methodically gather status information about the affected services and then eliminate
objects that are working normally.
Detailed monitoring and recovery techniques for devices and processes related to communications
subsystems are discussed in detail in the manuals for each subsystem. For more information,
refer to “Related Reading” (page 87).
This guide provides some basic commands you can use to identify and resolve common problems.
Your most powerful tool for monitoring and collecting information about subsystem objects is
the SCF facility. You can use SCF commands to get information and status for subsystem objects
by name, device type, or device subtype.
Subdevices are defined if a subsystem potentially operates on numerous, separately addressable
objects, such as stations on a multipoint line; the line is a device, and the stations are subdevices.
For a list of subsystems with their device type numbers and device subtypes, see Using SCF to
Determine Your System Configuration on page 2-5.
Monitoring the SLSA Subsystem
This subsection describes how to obtain the status of adapters, SACs, LIFs, and PIFs. For more
information on the SLSA subsystem, refer to the LAN Configuration and Management Manual.
Monitoring Communications Subsystems and Their Objects 79