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Enabling ICMP Polling of the Management Address in a NAT Environment
By default, NNMi automatically enables ICMP management address polling for all nodes, including those nodes residing in a NAT environment. If you have a NAT environment, it is highly recommended that you do not disable this setting.
To enable ICMP management address polling (if it is disabled), do the following:
- From the workspace navigation panel, select the Configuration workspace, expand the Monitoring folder, select Monitoring Configuration, and locate the Default Settings tab.
- Enable
ICMP Management Address Polling
. See Set Default Monitoring in the NNMi help.
View the information NNMi displays after performing Actions->Monitoring Settings for SNMP Agents. The displayed information indicates whether NNMi has the management address polling enabled.
When ICMP Management Address Polling is enabled, NNMi changes as follows:
-
The Agent ICMP State field appears in the following forms:
- Node form
- SNMP Agent form
- SNMP Agent table views
- NNMi changes the display location of the management address ICMP state. NNMi also changes the way it determines the SNMP agent status.
The following table shows the Agent ICMP and IP Address state polling actions that NNMi takes for the ICMP Management Address Polling and ICMP Fault Polling settings.
ICMP Management Address Polling |
ICMP 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 |
The following table shows changes to the SNMP Agent Status determined by APA for the SNMP agent and ICMP responses.
SNMP Agent Response |
Management Address ICMP Response |
SNMP Agent Status |
---|---|---|
Responding |
Responding |
Normal |
|
Not Responding |
Minor |
Not Responding |
|
Critical |
Not Responding |
Not Responding |
Critical |
With ICMP polling of the management address enabled, APA now considers the management address ICMP response and the SNMP agent response when generating conclusions and generating incidents.
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