2.2.7 Configuring monitoring settings
NNMi periodically monitors devices discovered by network discovery.
- Organization of this subsection
(1) About monitoring
Monitoring is a process to periodically monitor whether nodes on a discovered network work properly. NNMi monitors target devices by using SNMP or ICMP (ping). By default, monitoring is performed at five-minute intervals to check the status of the targets.
The following table describes the relationship between the settings for communication, discovery, and monitoring, and communication protocols SNMP and ICMP (ping).
Target of configuration |
Description |
Location for configuring the setting |
Setup item |
Default value |
---|---|---|---|---|
Protocol behavior |
Configure the timeout and retry count per communication for SNMP or ICMP (ping). Communications for discovery and monitoring are performed based on these settings. |
Select the Configuration workspace and then Communication Configuration. |
SNMP |
Five minutes (two retries) |
ICMP (ping) |
||||
Behavior during network discovery |
Configure the setting so that rediscovery is performed on a daily basis because generally the configuration of a network is not changed frequently. |
Select the Configuration workspace, Discovery, and Discovery Configuration. |
Sweep Interval |
One day |
Behavior during network monitoring |
Configure the setting so that monitoring is performed in a short cycle to immediately discover a failure. However, configure the setting so that polling is performed in minutes to keep a proper monitoring load. |
Select the Configuration workspace, Monitoring, and Monitoring Configuration. |
Fault Polling Interval |
Five minutes |
Items that can be monitored by NNMi are displayed in the Inventory view. The following figure shows the correspondence between the items monitored by NNMi and a device.
(2) Viewing monitoring definitions and checking the monitoring method
NNMi provides monitoring definitions as standard to help you immediately start monitoring. Therefore, you do not need to change the settings unless you want to customize the monitoring method or polling interval. In the following procedure, you will view the standard monitoring definitions, and check the monitoring method.
Procedure
In the Configuration workspace, select Monitoring and then Monitoring Configuration.
Select the Default Settings tab.
The default monitoring settings are displayed.
Check the settings such as the targets to be monitored and the number of minutes set for the monitoring interval.
Select the Interface Settings tab or the Node Settings tab to view the monitoring definitions.
In the Node Settings tab, the following definitions are specified:
Routers
Networking infrastructure devices
Microsoft Windows systems
Non-SNMP devices
Double-click a monitoring definition item.
Monitoring definitions for the item are displayed.
An appropriate monitoring method is defined for each node type. Check and compare the difference in monitoring targets and monitoring interval among the methods.
Next steps
You have now successfully checked the default monitoring definitions. In the next section, you will configure incidents.
(3) Items configured in monitoring definitions
NNMi provides, as standard, appropriate monitoring definitions as the settings for monitoring networks. Monitoring definitions define the type and cycle of polling performed during monitoring. By using these monitoring definitions, you can start network monitoring in an appropriate method immediately after installing NNMi.
You can configure the monitoring method in the Monitoring Configuration view. The following table describes the main monitoring definition items that can be defined.
Location for configuring the setting |
Monitoring definition item |
Description |
---|---|---|
Global Control field |
Enable State Polling |
Selecting this item monitors the operating status of SNMP agents, interfaces, and IP addresses.
|
Enable Card Polling# |
Selecting this item monitors the status of cards via SNMP. |
|
Enable Chassis Polling# |
Selecting this item monitors the status of the chassis via SNMP. |
|
Enable Physical Sensor Polling# |
Selecting this item monitors the status of physical sensors via SNMP. |
|
Default Settings tab |
Enable Management Address Polling |
Selecting this item monitors the IP addresses that are classified as management addresses via ICMP (ping). A management address is used by NNMi to communicate with the SNMP agent in its node. |
Enable IP Address Fault Polling |
Selecting this item monitors IP addresses via ICMP (ping). |
|
Enable Interface Fault Polling |
Selecting this item monitors the status of interfaces via SNMP. |
|
Enable Card Fault Polling# |
Selecting this item monitors the status of cards via SNMP. |
|
Enable Chassis Fault Polling# |
Selecting this item monitors the status of the chassis via SNMP. |
|
Enable Physical Sensor Fault Polling# |
Selecting this item monitors the status of physical sensors via SNMP. |
|
Fault Polling Interval |
Specify the interval for status monitoring. |
|
Node Settings tab |
Networking Infrastructure Devices |
Core devices in the network are monitored. Not only SNMP devices but also components (fans, power supplies, etc.) are configured as targets to be monitored. |
Non-SNMP Devices |
Devices that do not respond to SNMP are automatically managed as non-SNMP devices. They are configured to be monitored via ICMP (ping), and therefore their active status can be monitored. If a non-SNMP device becomes able to respond to SNMP, it is managed via SNMP. |
#: Cards, chassis, and physical sensors can be monitored only in specific models supported by NNMi.