Investigating data display issues in the Network Health Dashboard

Configure poll policies as follows in order to make data available in the various widgets of the Network Health Dashboard.

For information on the different Network Manager poll policies and poll definitions, see the following topic in the Network Manager documentation: https://www.ibm.com/docs/en/SSSHRK_4.2.0/ref/reference/ref_pollingref.html

Unavailable Resources widget

Configure the following poll policies in order to make data available in the Unavailable Resources widget:

Table 1. Unavailable Resources widget: which poll policies to configure

If you want to show response data for	Then ensure that one or more of the following poll policies is enabled in the appropriate network views
Chassis devices based on ping polling	Any poll policy that uses one or more chassis ping poll definitions. An example of a poll policy of this type is the Default Chassis Ping poll policy
Interfaces based on ping polling	Any poll policy that uses one or more chassis ping poll definitions. An example of a poll policy of this type is the Default Interface Ping poll policy.
Chassis devices based on SNMP polling	Any poll policy that uses one or more SNMP poll definitions. An example of a poll policy of this type is the snmpInBandwidth poll policy.
Interfaces based on SNMP polling	SNMP Link State poll policy.

Percentage Availability widget

Enable the Default Chassis Ping poll policy in order to display overall chassis availability data in the Percentage Availability widget.

Top Performers widget

Metrics in the Top Performers widget

To show a specific metric in the Top Performers widget Metric drop-down list, you must enable the poll policy that contains a poll definition related to that metric. Alternatively, create a new poll definition and add it to an enabled poll policy.

Note: These must be poll definition that can be stored and that falls into one of the following types:

• Basic threshold
• Ping
• SnmpLinkState

For example, using the default poll policies and poll definitions provided with Network Manager, here are examples of poll policies to enable and the corresponding metric that will be made available in the Metric drop-down list:

Table 2. Top Performers widget: examples of poll policies to configure

To display this metric	Enable this poll policy	Which contains this poll definition
ifInDiscards	ifInDiscards	ifInDiscards
ifOutDiscards	ifOutDiscards	ifOutDiscards
snmpInBandwidth	snmpInBandwidth	snmpInBandwidth

Historical poll data in the Top Performers widget

You can display historical poll data for a metric in the Top Performers widget by clicking the Last Day, Last Week, Last Month, and Last Year buttons. To collect historical poll data to display in this way, you must select the option to store historical data for the related poll definition related to the metric. For example, using the default poll policies and poll definitions provided with Network Manager, here are examples of poll definitions to configure.

Note: Historical data will only be viewable in the Top Performers once it has been collected, processed, and stored in the NCPOLLDATA database. For example, if at the time of reading this you had selected the option to store poll data for a poll definition one month ago, then you will only see one month's worth of data in the Last Year option.

Table 3. Top Performers widget: examples of poll definitions to configure

To display historical data for this metric	Select the Store? option for this poll definition	Within this poll policy
ifInDiscards	ifInDiscards	ifInDiscards
ifOutDiscards	ifOutDiscards	ifOutDiscards
snmpInBandwidth	snmpInBandwidth	snmpInBandwidth

Important: If you have correctly configured storage of historical poll data for the metrics you are interested in, but when you click any of the Last Day, Last Week, Last Month, and Last Year buttons you are not seeing any data, then there might be a problem with the underlying systems that process and store historical poll data. In particular, the Apache Storm system that processes historical poll data, might not be running, or Apache Storm might have lost connection to the NCPOLLDATA database, where historical poll data is stored. For more information, see the following topic in the Network Manager documentation: https://www.ibm.com/docs/en/SSSHRK_4.2.0/poll/task/poll_administeringstorm.html

Configuration and Event Timeline

If a configuration with Netcool® Configuration Manager was set up at installation time, but configuration change data does not appear in the Configuration and Event Timeline this might be due to integration issues. For more information on the integration with Netcool Configuration Manager, see the following topic in the Network Manager documentation: https://www.ibm.com/docs/en/SSSHRK_4.2.0/install/task/con_configintegrationwithncm.html