13.6.7 NNMi calculations for state and status
By default, NNMi automatically enables ICMP polling of each node's management address, including nodes residing in a NAT environment (Configuration > Monitoring > Monitoring Configuration, the Default Settings tab, ICMP Fault Monitoring section's Enable Management Address Polling setting). If you have a NAT environment, we recommend that you do not disable this setting.
- Important
In the Inventory > Node view, select a node and use the Actions > Configuration Details > Monitoring Settings command. The displayed information indicates whether NNMi has this management address polling enabled
When management address polling is enabled, the Agent ICMP State field appears in the following locations:
Node form
SNMP Agent form
SNMP Agent table views
The following table shows how NNMi behavior changes based on the ICMP Fault Monitoring settings.
ICMP fault monitoring settings |
Management ICMP address state IP address state |
||
---|---|---|---|
Enable management address polling |
Enable IP address fault polling |
Agent ICMP state |
IP address state |
Enabled# |
Disabled# |
Polled |
Not polled |
Enabled |
Enabled |
Polled |
Polled |
Disabled |
Disabled |
Not polled |
Not polled |
Disabled |
Enabled |
Not polled |
Polled |
#: Default settings
When management address polling is enabled, NNMi considers both the management address's ICMP response and the SNMP agent's response when calculating conclusions and generating incidents.
The following table shows the SNMP agent status calculations determined by the combined ICMP and SNMP responses.
SNMP agent's response |
Management address's ICMP response |
Resulting SNMP agent status |
---|---|---|
Responding |
Responding |
Normal |
Responding |
Not responding |
Minor |
Not responding |
Responding |
Critical |
Not responding |
Not responding |
Critical |