VMSC - VMD - Serviceability

Use the Serviceability dialog box, SNMP tab to configure alarm notification settings, when an SNMP network management tool is being used to collect and view alarms.

Network Management Station: Enter the fully qualified domain name or IP address of the NMS to which you want to send alarm notification traps. You can use the Browse button, if necessary.

Context (community): Enter the name of the context or community to which the NMS belongs.

For more information about how to configure this field, see the documentation for your SNMP NMS.

Acknowledgement type: Select the acknowledgement method from the SNMP NMS that the alarm notification traps have been received:

Return trap (Default) This acknowledgement type is potentially better and more reliable. When an alarm trap is received by your NMS, it is configured to send a trap of its own back to the MAS, acknowledging that it has received the alarm notification. It is also more complicated to set up and requires that you configure your NMS to generate such return traps.

Ping surround This acknowledgement type is easier to implement but inherently less informative and makes certain assumptions.

When this option is selected, and an alarm trap is ready to be sent to the NMS, a ping command is first generated to the NMS. Only if the MAS receives a ping response, does it send the trap. Then it sends another ping request. If it receives another ping response from the NMS, the assumption is that the trap was received on the NMS.

If no initial ping response is received from the NMS, then the MAS waits 5 minutes before trying again. It keeps trying at 5-minute intervals, until it receives a response from the NMS. If after 16 tries there is still no response from the NMS, then the MAS stops trying and raises a warning alarm against the alarming system.

If the first ping is successful and the trap is sent, but the second ping is not successful, then the assumption is that the trap was not sent successfully. In this case, the trap is rescheduled to be sent at 5-minute intervals until it is successfully sent. If after 16 tries there is still no response from the NMS, then the MAS stops trying and raises a warning alarm against the alarming system.

VMSC - VMD - Serviceability - SNMP Tab

Launching the Screen

Configuring the Screen Controls

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