To avoid management systems attempting to manage a partially booted system, SNMP remains in a shut down state if the configuration file fails to complete during system startup. While shutdown, SNMP gets and sets are not processed. However, notifications are issued if an SNMP trap group has been configured.
To enable SNMP, the portions of the configuration that failed to load must be initialized properly. Start SNMP with the config>system>snmp>no shutdown CLI command.
Use caution when changing the SNMP engine ID. If the SNMP engine ID is changed in the config>system>snmp>engineID engine-id context, the current configuration must be saved and a reboot must be executed. If not, the previously configured SNMP communities and logger trap-target notify communities are not valid for the new engine ID.