Cisco Systems 78-11324-02 Manual De Usuario

VHM helps network administrators and network operators determine and
maintain the stability of the VoIP network within their enterprise. VHM achieves
this goal by using:

A series of availability and health checks on the VoIP equipment in the
network.

A fault detection and escalation system to notify the users of any faults or
exceptions detected.

VHM integrates with network management systems (NMSs) such as HP
OpenView Network Node Manager.

With VHM, you can:

Discover VoIP network devices and applications on a user-entered schedule

Monitor faults in voice and data networks

Run synthetic transaction tests, to check Cisco CallManager functions

Check the availability and health of VoIP equipment and applications

Obtain the status of each voice device group, such as Voice Cluster, Voice
Gateway, Phone Access Switches, and Work Flow Applications

Discover and manage Ethernet ports that have IP Phones connected to them

Monitor IP phones in the network

VHM manages the voice-specific devices in the network by polling information
from managed devices, as well as processing SNMP Traps generated by the
devices. VHM relies on DFM to receive the SNMP Traps. VHM does not
duplicate queries for information collection, but shares the information collected
by DFM.

Any polling analysis done in DFM can be leveraged by VHM. When polling
devices, DFM monitors generic parameters, while VHM monitors voice-specific
parameters. When VHM is used in conjunction with DFM, users can detect
generic faults that are causing VoIP disruptions.