A aimosAgentAnnouncement notification is emitted by the agent if it is put in or out of operation. aimosAgentState of type AgentState indicates what actually happens. aimosAgentAnnouncement notification has no aimosAlarmCleared notification. Cold Start ========== A aimosAgentState of snmpColdStart(1) indicates, that the agent has been started. Already existing Sessions are invalid; requests will be responded by authorisation errors. The relevant alarm list entry contains aimosAlarmListAlarmID set to alarmOMC(62) and aimosAlarmListSpecificProblem set to 8880. Pause ===== A aimosAgentState of snmpPause(2) signifies that the A.I.M.O.S. SNMP Agent is proceed to pause its activity. Even though the A.I.M.O.S. SNMP Agent's process will remain active, requests will result in time outs until aimosAgentAnnouncement with aimosAgentState set to snmpResume(3) is forwarded. The relevant alarm list entry contains aimosAlarmListAlarmID set to alarmOMC(62) and aimosAlarmListSpecificProblem set to 8887. The agent is waiting a certain period of time for acknowledgements before going in pause mode. If the agent comes back in operation, it will recognise missing acknowledgements and continue sending out aimosAgentAnnouncement notifications regarding the AgentState of snmpPause(2) additional to the aimosAgentAnnouncement notifications regarding the AgentState of snmpResume(3). This may prevent the manager from requesting a synchronisation of the alarm list due to the gap in the sequence of notification ID's. Resume ====== A aimosAgentState of snmpResume(3) signifies that the A.I.M.O.S. SNMP Agent is resuming its activity. Already existing Sessions remain valid, except they were not used for a period longer than the one specified in aimosSessionTimeout. The relevant alarm list entry contains aimosAlarmListAlarmID set to alarmOMC(62) and aimosAlarmListSpecificProblem set to 8881. Shut Down ========= A aimosAgentState of snmpShutDown(4) signifies that the A.I.M.O.S. SNMP Agent is about to shut down. The A.I.M.O.S. SNMP Agent waits a certain time for the SNMP Managers to be able to acknowledge this notification before actually shutting down. If the process terminates, all Sessions are invalidated. The agent doesn't respond to requests until aimosAgentAnnouncement with aimosAgentState set to snmpColdStart(1) is forwarded. The relevant alarm list entry contains aimosAlarmListAlarmID set to alarmOMC(62) and aimosAlarmListSpecificProblem set to 8889. If the A.I.M.O.S. SNMP Agent comes back in operation, it will recognise missing acknowledgements and continue sending out aimosAgentAnnouncement notifications regarding the AgentState of snmpShutDown(4) additional to the aimosAgentAnnouncement notifications regarding the AgentState of snmpColdStart(1). This may prevent the manager from requesting a synchronisation of the alarm list due to the gapin the sequence of notification ID's.