Upon importing device topology from IP Availability Manager, VoIP Availability Manager performs its own discovery on the devices to gather critical VoIP application information. It models this information as logical topology objects in its repository, and maps the logical topology to the underlying physical transport topology discovered by IP Availability Manager.
VoIP Availability Manager then monitors the availability of the objects in its repository by monitoring the status of the managed devices and by subscribing to certain device, card, and interface status updates from IP Availability Manager. It also monitors the performance of the objects in its repository through status updates received periodically from VoIP Performance Manager.
VoIP Availability Manager uses SNMP polling and SNMP trap processing to continuously monitor the status of the objects in its repository:
The Avaya Enablement Pack uses a combination of SNMP polling and SNMP trap processing to obtain status update information for the discovered Avaya topology.
The Cisco Enablement Pack uses SNMP polling to obtain status update information for the discovered Cisco topology.
The Nortel Enablement Pack uses SNMP trap processing to obtain status update information for the discovered Nortel topology.
The VoIP Performance Manager Integration Pack uses SNMP trap processing to obtain status update information from VoIP Performance Manager.
The enablement packs apply the status updates to the appropriate attributes of the corresponding topology objects in the VoIP Availability Manager repository.