H3C Technologies H3C MSR 5600 - Manual (Page 126)

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The SNMP agent logs Get requests, Set requests, Set responses, and SNMP notifications, but does not
log Get responses.
• Get operation—The agent logs the IP address of the NMS, name of the accessed node, and node
OID.
• Set operation—The agent logs the NMS' IP address, name of accessed node, node OID, variable
value, and error code and index for the Set operation.
• Notification tracking—The agent logs the SNMP notifications after sending them to the NMS.
The SNMP module sends these logs to the information center as informational messages. You can
configure the information center to output these messages to certain destinations, such as the console
and the log buffer. The total output size for the node field (MIB node name) and the value field (value of
the MIB node) in each log entry is 1024 bytes. If this limit is exceeded, the information center truncates
the data in the fields. For more information about the information center, see "Configuring the
information center."
To configure SNMP logging:
Step Command Remarks
1. Enter system view. system-view N/A
2. (Optional.) Enable SNMP
logging. snmp-agent log { all |
get-operation | set-operation } By default, SNMP logging is
disabled.
3. (Optional.) Enable SNMP
notification logging.
snmp-agent trap log
By default, SNMP notification
logging is disabled.
Configuring SNMP notifications
The SNMP Agent sends notifications (traps and informs) to inform the NMS of significant events, such as
link state changes and user logins or logouts. Unless otherwise stated, the trap keyword in the command
line includes both traps and informs.
Enabling SNMP notifications
Enable an SNMP notification only if necessary. SNMP notifications are memory-intensive and may affect
device performance.
To generate linkUp or linkDown notifications when the link state of an interface changes, you must
enable linkUp or linkDown notification globally by using the snmp-agent trap enable standard
[ linkdown | linkup ] * command and on the interface by using the enable snmp trap updown
command.
After you enable notifications for a module, whether the module generates notifications also depends on
the configuration of the module. For more information, see the configuration guide for each module.
To enable SNMP notifications:
Step Command Remarks
1. Enter system view. system-view N/A