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Integrating Solutions with VPO
Defining an Integration Strategy
Chapter 276
Monitoring Facilities
The Data Collection and Threshold Monitoring facility of NNM can
be used to monitor numeric MIB values. Alternatively, you can configure
monitor templates for VPO managed nodes to use the VPO threshold
monitoring facility. This has the following advantages:
❏ With MIB data collection, polling is always done by the management
server which sends a request for data to the managed objects at
regular intervals, and receives the monitored value as the response.
With the VPO threshold monitors, polling is done by the VPO agent.
This means that there is no additional network traffic when polling
MIB variables. The only additional network traffic occurs if a problem
is detected that causes a message to be sent to the management
server. This can be useful for monitoring application MIBs that are
located on nodes running the VPO agent.
❏ Even if an object for which a MIB variable is monitored is not running
a VPO agent, the threshold monitor can reduce network load. In this
case, it is recommended to use an agent running on a machine located
in the vicinity of the monitored object. In this case, any additional
network load caused by MIB variable polling is restricted to a
segment of the network, reducing overall network load and the
workload of the management server.
❏ All features previously mentioned for the SNMP Trap Template also
apply to the Monitor Template.
The MIB Data Collection facility allows the collection of SNMP-related
data and it is provided by both NNM and VPO. It is recommended to use
the MIB Data Collection facility when:
❏ the agent is not running on the node to be monitored, and there is no
VPO managed node in the immediate vicinity
❏ the monitored values are to be collected and graphed at a later time.
VPO offers additional capabilities to achieve a tighter integration and
many additional features in the areas described in the following
subsections: