- Hewlett-Packard Printer User Guide

An Introduction to Integrating Partner Applications with VPO
VPO Conceptual Overview
Chapter 140
Processing and Consolidating Information
VPO offers extensive tools for the management of messages. Messages
collected at the managed nodes are automatically forwarded to an
appropriate management server.
To minimize network traffic, and to avoid overloading the user with
irrelevant messages, filter conditions can be specified. All messages,
including suppressed ones, can be logged on the originating node for
future analysis. Each message can be assigned to a particular severity
level (critical, major, minor, warning, normal) to show the relative
importance of the event. If no severity class has been assigned, then the
message is treated as belonging to class unknown. However, it is
recommended to avoid the “unknown” message status because it is useful
to know the severity of different events. Messages sent to VPO by way of
the opcmsg(1) command are assigned a severity level of normal if no
other severity level has been specified.
Messages which are considered to belong together, for example, if they
are related to the same kind of managed objects or to a certain problem
domain, can be grouped together into message groups. For example, all
messages from a backup or spooler application might be grouped
together. VPO provides several default message groups; see the VPO
Administrator’s Reference Volume I for a complete list. Message groups
can be added, modified, or deleted in the VPO Message Group Bank. Note
that the message groups Misc and OpC have special functions and must
not be used for integration; they cannot be deleted.
You can configure message source templates at the management server
and then download them to the managed nodes using the VPO GUI or
the command opctmpldwn(1). This process is independent of the
location of the managed node. The monitoring of services at the managed
nodes helps to reduce the network traffic. VPO also monitors its own
processes to guarantee complete and continuous availability of its
services.