Node Settings for Monitoring

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NNMi decides which monitoring configurations apply to a node or interface based on the ordering number assigned to the configuration definitions. NNMi monitors the device according to the first match (checked from lowest number to highest number within each category). Categories are read in sequence. Click here for a description of the sequence.

1. Interface Settings: NNMi monitors each of the Node's Interfaces and IP Addresses based on the first matching Interface Settings definition. The first match is the Interface Settings definition with the lowest Ordering number, then Baseline Settings.

2. Node Settings: NNMi monitors each Node and each previously unmatched Interface or IP Address based on the first matching Node Settings definition. The first match is the Node Settings definition with the lowest Ordering number, then Baseline Settings.

   Note Child node groups are included in the Ordering hierarchy. This means that if the parent node group has a lower Ordering number (for example, parent=10, child=20), then the monitoring configuration specified for the parent node group also applies to the nodes in the child node group. To override a parent node group monitoring configuration, set the Ordering number for the child node group to a number that is lower than the parent (for example, parent=20, child=10).

3. Default Settings: If no match is found for a Node, Interface, or IP Address in 1 or 2, NNMi applies the default Monitoring Configuration settings.

No duplicate Ordering numbers are permitted. Each Node Setting ordering number must be unique. 

If  enabled, NNMi contacts the SNMP AgentSimple Network Management Protocol (SNMP) is an Internet-standard protocol used to manage devices on IP networks. The SNMP Agent uses this protocol to report information to authorized management programs. or Web AgentThe Web Agent represents a management service running on a device and contains the settings NNMi uses to communicate with the device. on each node in the specified Node Group to gather data for monitoring purposes.

If  disabled, NNMi does not contact the SNMP Agent or Web Agent on nodes in the specified Node Group for monitoring purposes (does not generate traffic to the nodes). NNMi continues to generate ICMP traffic to the nodes in the specified Node Group unless ICMP monitoring is disabled (see below).

If you use Auto-Discovery, NNMi might detect Nodes and add them to the NNMi database as non-SNMP nodes.

If  enabled, State Poller only issues ICMP (ping) requests to the management address for a node.

If  disabled, State Poller does one of the following:

• If neither this attribute nor Enable ICMP Fault Polling is selected, State Poller does not use ICMP to monitor nodes covered by this configuration setting.
• If Enable ICMP Fault Polling is selected, State Poller uses ICMP to monitor ALL IP addresses covered by this configuration setting.

If  enabled, State Poller issues ICMP (ping) requests to verify the availability of discovered IP address. 

If  disabled, State Poller does the following:

• IP addresses (both previously discovered and newly discovered) have a State attribute value of "Not Polled" and a Status attribute value of "No Status" with the color of the IP address map-symbol set to beige. See Layer 3 Neighbor View.
• If both ICMP and SNMP are disabled for a Node, the Node has a Status attribute value of "No Status" and the color of the Node map-symbol background shape is set to beige.

If  enabled, State Poller monitors all interfaces by issuing SNMP read-only queries to devices assigned to this level of the monitoring hierarchy. 

By default, any connected interface is monitored for MIB-II ifAdminStatus and ifOperStatus. (ifAdminStatus is set by the device administrator. ifOperStatus indicates the operational status of interface health.) If you have unconnected interfaces that you want to monitor, expand NNMi monitoring behavior with the Poll Unconnected Interfaces and the Poll Interfaces Hosting IP Addresses attributes.

• In the Global Control section of this form, the Enable State Polling attribute must be enabled, too. See Layer 2 Neighbor View. (See Global Control Settings for Monitoring for more information.)
• In the Communication Configuration view, enable State Poller queries with the applicable Enable SNMP Communication attributes (see Configure communication protocol for more information).

If  disabled, for devices assigned to this level of the monitoring hierarchy:

• Causal Engine calculates Status based only on IP address State.
• The Interface objects previously discovered change to a State attribute value of "Not Polled" and a Status attribute value of "No Status" (plus any related map-symbol changes to a beige color).

Use this attribute to poll fault metrics for cards. Card fault metrics include Administrative State, Operational State, and Standby State.

If  enabled, NNMi gathers fault data related to the card fault metrics in devices assigned to this level of the monitoring hierarchy.

If  disabled, NNMi does not extend data collection behavior to include card fault data about devices assigned to this level of the monitoring hierarchy.

Use this attribute to poll fault metrics for chassis. Chassis fault metrics include Administrative State, Operational State, and Standby State.

If  enabled, NNMi gathers fault data related to the chassis fault metrics in devices assigned to this level of the monitoring hierarchy.

If  disabled, NNMi does not extend data collection behavior to include chassis fault data about devices assigned to this level of the monitoring hierarchy.

Use this attribute to poll Node Sensor fault metrics.

If  enabled, NNMi gathers fault data related to the Node Sensor fault data in devices assigned to this level of the monitoring hierarchy.

If  disabled, NNMi does not extend data collection behavior to include Node Sensor fault data about devices assigned to this level of the monitoring hierarchy.

Use this attribute to poll for Physical Sensor faults on fan, power supply, temperature, and voltage. Only the health of the power supply and fan Physical Sensors are propagated to the Node level to affect Node Status.

If  enabled, NNMi gathers fault data related to the Physical Sensor fault metrics in devices assigned to this level of the monitoring hierarchy.

If  disabled, NNMi does not extend data collection behavior to include Physical Sensor fault data about devices assigned to this level of the monitoring hierarchy.

The time that State Poller waits between issuing queries to gather information for any of the following that are enabled: ICMP Polling, SNMP Polling, Poll Unconnected Interfaces, and Poll Interfaces Hosting IP addresses.

The default Fault Polling Interval is 5 minutes, except for the Node Group named Microsoft Windows Systems which is 10 minutes.

Requires Network Node Manager iSPI Performance for Metrics Software (NNM iSPI Performance for Metrics). To populate performance data in the dashboard views or enhance NNM iSPI Performance for Metrics reports by sharing NNMi configuration settings, install the optional Network Performance Server (NPS).

(NNM iSPI Performance for Metrics) Use this attribute to extend the range of polling data that NNMi collects. NNM iSPI Performance for Metrics uses the additional data in a series of performance reports. See Purchase Network Node Manager i Smart Plug-ins and More for more information. When enabled, network traffic increases on your network because NNMi gathers performance data about each member of this group on a regular schedule.

If  enabled, NNMi gathers basic Interface performance data from Interfaces in devices assigned to this level of the monitoring hierarchy.

If  disabled, NNMi does not extend data collection behavior to include performance data about Interfaces assigned to this level of the monitoring hierarchy.

(NNM iSPI Performance for Metrics) Use this attribute to extend the range of polling data that NNMi collects. NNM iSPI Performance for Metrics uses the additional data in a series of performance reports. When enabled, network traffic increases on your network because NNMi gathers performance data about each member of the DSx Interfaces interface group on a regular schedule. See Interface Groups Provided by NNMi for more information.

If  enabled, NNMi gathers DSx performance data from DSx Interfaces assigned to this level of the monitoring hierarchy.

If  disabled, NNMi does not gather DSx performance data from DSx Interfaces assigned to this level of the monitoring hierarchy.

(NNM iSPI Performance for Metrics) Use this attribute to extend the range of polling data that NNMi collects. NNM iSPI Performance for Metrics uses the additional data in a series of performance reports. When enabled, network traffic increases on your network because NNMi gathers performance data about each member of the SONET Interfaces interface group on a regular schedule. See Interface Groups Provided by NNMi for more information.

If  enabled, NNMi gathers SONET performance data from SONET Interfaces assigned to this level of the monitoring hierarchy.

If  disabled, NNMi does not gather SONET performance data from SONET Interfaces assigned to this level of the monitoring hierarchy.

(NNM iSPI Performance for Metrics) Use this attribute to extend the range of polling data that NNMi collects. NNM iSPI Performance for Metrics uses the additional data in a series of performance reports. When enabled, network traffic increases on your network because NNMi gathers performance data for each ATM Interface.

If  enabled, NNMi gathers ATM performance data from ATM Interfaces assigned to this level of the monitoring hierarchy.

If  disabled, NNMi does not gather ATM performance data from ATM Interfaces assigned to this level of the monitoring hierarchy.

(NNM iSPI Performance for Metrics) Use this attribute to extend the range of polling data that NNMi collects. NNM iSPI Performance for Metrics uses the additional data in a series of performance reports. When enabled, network traffic increases on your network because NNMi gathers performance data for each Frame Relay Interface.

If  enabled, NNMi gathers Frame Relay performance data from Frame Relay Interfaces assigned to this level of the monitoring hierarchy.

If  disabled, NNMi does not gather Frame Relay performance data from Frame Relay Interfaces assigned to this level of the monitoring hierarchy.

This option gathers the following types of metrics:

• Circuit in and out octets, errors, and discards
• Committed Information Rate (CIR) and Extended Information Rate (EIR) utilization
• Forward Error Congestion Notification (FECN) and Backward Error Congestion Notification (BECN) counts

See also Configure Discovery of ATM/Frame Relay Interfaces.

(NNM iSPI Performance for Metrics) Use this attribute to poll Node Sensor performance. An NNMi administrator can set the threshold for Node Sensors related to the buffer, CPU, disk, and memory metrics.

If  enabled, NNMi gathers performance data related to the Node Sensors performance metrics in devices assigned to this level of the monitoring hierarchy. 

If  disabled, NNMi does not extend data collection behavior to include Node Sensors performance data about devices assigned to this level of the monitoring hierarchy.

(NNM iSPI Performance for Metrics) Use this attribute to poll for Physical Sensor performance on backplanes. An NNMi administrator can set thresholds related to Physical Sensor performance metrics for backplanes. The backplane's health is not propagated to the Node level to affect Node Status.

If  enabled, NNMi gathers performance data related to the Physical Sensor performance metrics in devices assigned to this level of the monitoring hierarchy. 

If  disabled, NNMi does not extend data collection behavior to include Physical Sensor performance data about devices assigned to this level of the monitoring hierarchy.

(NNM iSPI Performance for Metrics) Use this field to set the time period that NNMi waits between issuing network traffic to gather performance data for the NNM iSPI Performance for Metrics.

The default Performance Polling Interval is 5 minutes, except for the Node Group named Microsoft Windows Systems which is 10 minutes.

If  enabled, any unconnected interface that has one or more addresses associated with it is monitored for MIB-II ifAdminStatus and ifOperStatus. (ifAdminStatus is set by the device administrator. ifOperStatus indicates the operational status of interface health.) 

By monitoring the Interface (in addition to the IP address), NNMi can make more informed decisions about the health of each IP address associated with an unconnected interface.

If  disabled, State Poller polls according to other configuration settings.

Poll Link Aggregation Interfaces

(NNMi Advanced)

If  enabled, NNMi monitors any unconnected Link AggregationProtocols used on Switches to configure multiple Interfaces (Aggregation Member Interfaces) to function as if they were one (an Aggregator Interface). When two Aggregator Interfaces establish a connection, that connection is an Aggregator Layer 2 Connection. The Aggregator Layer 2 Connection appears on Layer 2 Neighbor View maps as a thick line with an Interface icon at each end (representing the Aggregator Interface). or Split Link AggregationLink Aggregation with more than two endpoints. Some vendors refer to this as Multi-Chassis Link Aggregation, SLAG, MLAG, or MC-LAG. member interfaces in switch-to-switch and server-to-switch connections:

• Aggregate member interfaces not connected outside the context of the Aggregator membership.
• Aggregate member interfaces connected to an undiscovered node (for example, the SLAG upstream switch stack).

If  disabled, you must ensure that other Monitoring Configuration settings allow NNMi to manage each Aggregator member interface (none accidentally excluded or missed). Otherwise, NNMi calculates Aggregator status based on overall Aggregator behavior.

When enabled , NNMi polls for the number of interfaces using the ifNumber value for the node. If the number of interfaces has changed, NNMi initiates a rediscovery of the node. Polling is suspended until the discovery is complete.

When disabled , NNMi does not actively poll for a change in the number of interfaces. The change is detected the next time the node is rediscovered.

When enabled , NNMi polls for the last change time from the ENTITY-MIB entLastChangeTime value. If the time has changed, NNMi initiates a rediscovery of the node. Polling is suspended until the discovery is complete.

When disabled , NNMi does not actively poll the entLastChangeTime MIB value. The change is detected the next time the node is rediscovered.

The time that State Poller waits between issuing queries to gather information for the Number of Interfaces (ifNumber) and Entity Change (entLastChangeTime) settings enabled for Change Detection Monitoring.

The default Change Detection Polling Interval is 4 hours.