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An Introduction to Integrating Partner Applications with VPO
VPO Conceptual Overview
Chapter 136
The implementation of VPO can be scaled from the management of
smaller workgroups, running business critical applications, to the
management of world-wide distributed computing environments with
thousands of systems. VPO also supports competitive management
approaches, for example, follow-the sun.
Open APIs and external interfaces enable the seamless integration of
products such as database management modules, and customized
application integration packages. Other IT infrastructure components,
for example, trouble-ticket systems, pagers, and help desks are available
on both the management server and agents.
To summarize, VPO is a core INSM component that can improve the
effectiveness and productivity of any IT organization by increasing the
availability of computing resources and reducing the time required to
resolve problems.
VPO Implementation
VPO is a distributed client-server software solution and its architecture
adheres to the manager/agent concept. Within a computing environment
managed by VPO one, or several, suitable systems are selected as central
management servers. The management servers receive and present
management information, initiate actions and activate the agents,
among other tasks. Other computer systems in the environment,
connected by either LAN or WAN to the management servers, can be
made managed nodes, running the VPO agent software. The VPO
agent on the managed node collects and processes management
information, forwards pertinent information to the appropriate
management server(s), and starts local actions.
VPO can also monitor intelligent network devices such as bridges, hubs
and printers which can submit SNMP traps if a fault or other event
occurs.
Communication between the VPO management server and the managed
nodes is based on DCE remote procedure calls (RPC) which enables
bidirectional communication. In comparison with pure SNMP-based
communication, the use of RPC allows true
management-by-exception. This means that instead of the
management server polling its managed nodes at regular intervals to
obtain status information, it is contacted by the VPO intelligent agent
only when a problem is detected. This minimizes the network traffic and
increases the performance of the management server.