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STA Reference Guide, v1.0.2
E28382-03
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Managing Library SNMP Connections : Testing Library SNMP Connections

Testing Library SNMP Connections

A library connection test establishes, or re-establishes, the SNMP handshake between STA and the library. An STA user or administrator can perform a connection test at any time, as needed. It typically takes less than a second to test a library connection, but during this time no traps will be received from any libraries. Only one library connection can be tested at a time. See “Test a Library SNMP Connection” for detailed instructions.

When to Perform Connection Tests

It is recommended that you perform a library connection test whenever you perform any of the activities described below. These activities may cause the SNMP connection with the affected library to be dropped, and STA will not be able to receive SNMP data from the library until after the completion of the next scheduled data collection (see “Scheduled Data Collections” for details). Performing a connection test minimizes the amount of time that the library SNMP connection is dropped and prevents the loss of large amounts of SNMP data.

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After modifying any settings for the STA SNMP client (see “Change SNMP Settings for the STA Client”  for details). These settings include the SNMP user name and the connection authorization and privacy passwords. If you modify any of these settings, you need to test the connections of all monitored libraries.
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After modifying any SNMP settings for a monitored library (see “Change SNMP Connection Details for a Monitored Library”  for details). Whenever you modify these settings, the Library Engine ID field is blanked out to indicate that the SNMP connection with the library has been dropped. To restore the proper connections, you only need to test the connection of the affected library.
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After a monitored library has been rebooted. You should wait until the library is fully operational before initiating the connection test. If more than one library is rebooted, you only need to test the connection for one of them, but you should wait for all libraries to be fully operational before doing so.
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After a Redundant Electronics switch has taken place on a monitored library. You should wait until the switch has completed and the library is fully operational before initiating the connection test. See “STA and Redundant Electronics” for details.
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Anytime you suspect loss of SNMP data from one or more libraries.
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