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- Managing Overlapping IP Addresses in NAT Environments
- What is NAT?
- What are the Benefits of NAT?
- What Types of NAT are Supported?
- How is NAT Implemented in NNMi?
- Static NAT Considerations
- Dynamic NAT and PAT Considerations
- Deploy NNMi in a Network Address Translation (NAT) Environment
- How NNMi Calculates State and Status in a Network Address Translation (NAT) Environment
NNMi Calculations for State and Status
By default, NNMi automatically enables ICMP polling of each Node’s management address, including those 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, it is highly recommended that you do not disable this setting.
Note In the Inventory > SNMP Agent view, select an SNMP Agent and use the Actions > 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 ICMP Fault Monitoring settings. The first row in the table shows the NNMi 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
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