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8. Applications
Similarly to the GUI or WWW interface operation, after applying changes the configuration must
be committed to save the settings. With NSMP, the committing is executed by sending a SNMP Set
request with the OID of the satelSATELLARNMSCancelCommit parameter. To commit changes permanently and make them effective, CancelCommit is set to value 1. To cancel changes that are not yet
stored CancelCommit is set to 0.
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Satellar SNMP settings define whether the SNMP version 2 or SNMP version 3 is available. SNMPv3
USM Security Type parameter defines what SNMPv3 authentication and ciphering method is used,
but it also defines whether the SNMPv2 is available or not. If Security Type is set to NoAuth (default),
SNMPv2 is available with defined community words and also SNMPv3 is available without authentication or ciphering. When the Security Type is set to any other option, only SNMPv3 with defined
parameter settings is available.
8.2.4SNMP Timeout
Some of the reading or writing actions require more time to complete that others. Espacially commands related to databases, such as routing tables, take longer than accessing a parameter with a
single value. Also, SNMP requests sent over the radio interface have longer delay than the request
sent over wired IP connection. This has to be taken into account at the external SNMP application
sending the requests: most of the SNMP applications have a SNMP Timeout parameter. Increasing
the value for timeout in the external application can be used to avoid SNMP connectivity issues with
SATELLAR modems.
8.2.4.1 SNMP application examples
NET-SNMP – Console based application for various SNMP usages, such as scripting.
SNMPB - a simple graphical Windows application.
Dude – a simple graphical Windows application.
Spiceworks – a browser-based application.
8.2.5Notifications (traps)
SNMP also includes the possibility to get notifications - also known as traps - for different events.
These are basically messages with different names and possibly some content. One default trap is
information about stop and start of SNMP. When SNMP starts, it sends coldStart trap and when it
closes down, it sends notification NotifyShutdown. Notifications are sent to IP address that is defined
at parameter SNMP Notification IP.
There are several notifications in Satellar that can be enabled. To be able to enable notification,
SNMP must be set ON and then each notification is enabled individually. Each notification has userdefinable parameters that define when message for the event is sent.
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