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Chapter 1 11
Introduction to HP OpenView Service Assurance for Communication
Networks
Product Architecture
devices and applications, so that an incoming message from a device
or application can affect the status of an associated service. Service
Navigator provides root cause analysis of service status issues. It can
also show the services impacted by a particular failure condition
listed in the message browser. When the OV Topology Server is also
configured, the service hierarchy can show the specific telecom
network element that is causing a service degradation.
OV Telecom Extensions for OV Operations
The primary components of the OV Telecom Extensions for OV
Operations product are:
• Telecom subagent—The telecom subagent acts as a data collector to
receive messages from telecom network elements and telecom
element management systems. The telecom subagent formats the
received messages using the configured message source templates.
Additionally, the telecom subagent provides table lookup and time
arithmetic capabilities. If the OV Topology Server is configured, the
telecom subagent formats the messages into X.733 alarm format and
forwards them to the topology server for further processing. If the OV
Topology Server is not configured, the telecom subagent forwards the
messages to the OVO agent.
• Topology adaptor—The topology adaptor forwards problem
notifications from the topology server to the OVO agent for inclusion
in the message browser. It maps source topology elements to nodes in
the OVO GUI node bank for maintaining the two GUIs. The topology
adaptor also maintains the synchronization between the message
browser and the problems presenter by sending messages directly to
the OVO server. This synchronization includes changes to problem
ownership, severity, acknowledged state, and discharged state. When
Service Navigator is configured, the topology adaptor assigns
messages to the applicable services and communicates this
information to the OVO server so the status of services that include
elements in the telecom topology stays current.
OV Topology Server
The primary components of the OV Topology Server product are:
• Topology server—The topology server receives messages from the
telecom subagent and correlates them into problems. The topology