Chapter 13
| Basic Administration Protocols
Simple Network Management Protocol
– 444 –
To show configured trap managers:
1. Click Administration, SNMP.
2. Select Configure Trap from the Step list.
3. Select Show from the Action list.
Figure 273: Showing Trap Managers
Creating SNMP
Notification Logs
Use the Administration > SNMP (Configure Notify Filter - Add) page to create an
SNMP notification log.
Command Usage
â—† Systems that support SNMP often need a mechanism for recording Notification
information as a hedge against lost notifications, whether there are Traps or
Informs that may be exceeding retransmission limits. The Notification Log MIB
(NLM, RFC 3014) provides an infrastructure in which information from other
MIBs may be logged.
â—† Given the service provided by the NLM, individual MIBs can now bear less
responsibility to record transient information associated with an event against
the possibility that the Notification message is lost, and applications can poll
the log to verify that they have not missed any important Notifications.
â—† If notification logging is not configured, when the switch reboots, some SNMP
traps (such as warm start) cannot be logged.
â—† To avoid this problem, notification logging should be configured as described
in this section, and these commands stored in the startup configuration file
using the System > File (Copy – Running-Config) page as described on page 91.
Then when the switch reboots, SNMP traps (such as warm start) can now be
logged.
â—† Based on the default settings used in RFC 3014, a notification log can contain
up to 256 entries, and the entry aging time is 1440 minutes. Information
recorded in a notification log, and the entry aging time can only be configured
using SNMP from a network management station.
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