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Chapter 4 Simple Network Management Protocol
SNMP Traps and Informs
SNMP Traps and Informs
An SNMP agent sends notifications in the form of traps or informs to identify important system events.
Traps do not receive acknowledgments from the destination whereas informs do receive
acknowledgments.
Note
Cisco Unity Connection does not support SNMP traps.
For all notifications, the system sends traps immediately if the corresponding trap flags are enabled. In
the case of the syslog agent, the Cisco Unified CM alarms and system-level log messages get sent to
syslog daemon for logging. Also, some standard third-party applications send the log messages to syslog
daemon for logging. These log messages get logged locally in the syslog files and also get converted into
SNMP traps/notifications.
The following list contains Cisco Unified CM SNMP trap and inform messages that are sent to a
configured trap destination:
•
Cisco Unified CM failed
•
Phone failed
•
Phones status update
•
Gateway failed
•
Media resource list exhausted
•
Route list exhausted
•
Gateway layer 2 change
•
Quality report
•
Malicious call
•
Syslog message generated
SNMP Trace Configuration
For Cisco Unified CM, you can configure traces for the SNMP agent in the Trace Configuration window
in Cisco Unified Serviceability by choosing the Cisco Unified CM SNMP Service in the Performance
and Monitoring Services service group. A default setting exists for all the agents. For Cisco CDP Agent
and Cisco Syslog Agent, you use the command line interface (CLI) to change trace settings, as described
in the
Command Line Interface Reference Guide for Cisco Unified Solutions
.
SNMP Tips
Refer to the CISCO-CCM-CAPABILITY-MIB at
http://tools.cisco.com/Support/SNMP/do/BrowseMIB.do?local=en&step=2&mibName=CISCO-CCM-
CAPABILITY
or
“CISCO-CCM-CAPABILITY” section on page 7-121
. As stated in the
CISCO-CCM-CAPABILITY-MIB, ccmPhoneDevicePoolIndex does not get supported, so it returns a 0.
The Callmanager device registration alarm currently does not contain the device pool information.
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