Configure Threshold to Monitor Traffic Flow

The NNM iSPI Performance for Traffic thresholds enable you to monitor the volume of traffic passing through an interface. Use Threshold Configuration feature to specify the set of interfaces for which you want to monitor threshold. You can select a group of interfaces, all interfaces in a selected node, or all interfaces for a selected site for threshold configuration. The NNM iSPI Performance for Traffic monitors each interface of the node or site individually based on the configured threshold. This topic includes the following sections:

• Add New Threshold Settings Using the Threshold Details Form
• Add New Threshold Settings for Sites Using the Traffic Analysis Workspace
• Add New Threshold Settings for Nodes Using the Traffic Analysis Workspace
• Modify Threshold Settings Using the Threshold Details Form
• Delete Threshold Settings Using the Threshold Details Form

The NNM iSPI Performance for Traffic uses the following metrics for threshold monitoring.

• Volume: Refers to the number of bytes flowing through the interface. The units that the NNM iSPI Performance for Traffic uses to measure the traffic volume are Bytes, Kilobytes, Megabytes, and Gigabytes.
• Application Bandwidth: Refers to the bandwidth consumed by an application on an interface. The units that the NNM iSPI Performance for Traffic uses to measure the traffic bandwidth are bps, Kbps, Mbps, and Gbps. You can also set the Application Bandwidth threshold as Percent Utilization. Percent Utilization refers to the threshold based on the percentage of the interface bandwidth consumed by an application out of the total bandwidth available on an interface. For example, consider that you set an Application Bandwidth threshold on the Interface Fa0/0 for application A as x Percent Utilization. If the bandwidth utilized by the application A exceeds x percent of the total available bandwidth on the interface, an incident is raised.

The above metrics are applied to both ingress and egress traffic flows and both are monitored for threshold violations.

The NNM iSPI Performance for Traffic computes the metric values for the selected set of thresholds every five minutes. It generates or clears the incidents based on the computed values and configured threshold values.

The NNM iSPI Performance for Traffic performs the following actions if the threshold for an interface is breached:

• Creates an incident for the breached threshold

  For information about incident types supported by the NNM iSPI Performance for Traffic, see Incident Types Supported.

• Updates the threshold state of the interface in Flow Interfaces view.
• Updates the threshold state of the related node.

For example, if you have configured a threshold on the Interface Fa0/0 of Node A, and the traffic volume passing through Interface Fa0/0 crosses the threshold value, the NNM iSPI Performance for Traffic automatically raises an incident and updates the threshold state for the following:

• Flow interface Fa0/0
• Hosting node Node A

When the traffic volume comes back to the acceptable range, the NNM iSPI Performance for Traffic clears the incident and updates the status of the flow interface and the node accordingly.

Launch the Threshold Configuration Panel

To launch the threshold configuration form, follow these steps:

1. Log on to Network Node Manager i Software (NNMi) console using your user name and password.

   You must have administrator privileges.

2. Click Configuration. The Configuration tab expands.
3. Select NNM iSPI Performance for Traffic Configuration
4. On the Configuration panel, click Site, ToS and Threshold Configuration > Threshold.

You can perform the following tasks using the Threshold Configuration panel:

Icon	Description
	Enables you to create a new threshold.
	Performs the following operations: Opens the Threshold Details form for the selected threshold. Enables you to edit the selected threshold configuration.
	Deletes the selected threshold.
	Retrieves the last saved threshold configuration from the database and displays the configured thresholds in the Threshold Configuration panel.

Any changes made to the threshold settings are applied to the poller immediately.

Add New Threshold Settings Using the Threshold Details Form

To add a new threshold, follow these steps:

1. Launch the Threshold Configuration panel.
2. Click New in Threshold Configuration panel to open the Threshold Details form.
3. NNM iSPI Performance for Traffic assigns the new threshold to the interfaces configured for an existing group of interfaces, nodes, or sites. Specify the following information in the Threshold Details form:

   Field Name	Description
   Metric	Select one of the following metrics for the threshold: Volume: Selecting this metric enables the threshold to monitor the volume of traffic passing through the selected interfaces. Bandwidth: Selecting this metric enables the threshold to monitor the application bandwidth for the selected interfaces.
   High Value	Type a high value for the threshold. If you have selected Volume in the metric field, you can select Bytes, KB, MB, or GB for the threshold. If you have selected Bandwidth in the metric field, you can select bps, Kbps, Mbps, Gbps, or Percent Utilization for the threshold. If the traffic volume or data bandwidth for the interfaces cross this high value, the NNM iSPI Performance for Traffic creates an NNMi incident and updates the status for the node for which the interfaces are configured.
   High Rearm Value	Type a high rearm value for the threshold. The high rearm value specifies the acceptable range of traffic volume or data bandwidth for the selected interfaces. The NNM iSPI Performance for Traffic performs the following tasks after the traffic volume or data bandwidth for the selected interfaces reach the high rearm value: Updates the life-cycle state of the NNMi incident to Closed state Updates the node status
   Application or ToS - Set Threshold By	Select one of the following types for the threshold: Application: Select this option if you want NNM iSPI Performance for Traffic to monitor each application for each of the selected interfaces. If you select Bandwidth as the threshold metric, you can select either Application or All Applications as the threshold type. On the Application Mappings tab, select the application names you want to monitor. Make sure that you select at least one application. All Applications: Select this option if you want NNM iSPI Performance for Traffic to monitor all applications for each of the selected interfaces. If you select Bandwidth as the threshold metric, you can select either Application or All Applications as the threshold type. ToS: Select this option if you want NNM iSPI Performance for Traffic to monitor each class of service for each of the selected interfaces. Make sure that you select this threshold type if you have selected Volume as the threshold metric. On the Type of Service Mappings tab, select the class of service names that you want to monitor. Make sure that you select at least one class of service. All ToS: Select this option if you want NNM iSPI Performance for Traffic to monitor all classes of service for each of the selected interfaces. Make sure that you select this threshold type if you have selected Volume as the threshold metric. None: Select this option if you want NNM iSPI Performance for Traffic to monitor the total volume of traffic passing through each interface in the selected interface group, node, or site. NNM iSPI Performance for Traffic monitors the traffic volume across all applications and classes of services if you select this option. You can select this option only if you have selected Volume as the threshold metric. On the Type of Service Mappings tab, if the ToS Operator column displays the value EQUALS, the ToS Second Number column displays the value -1. The ToS Second Number column displays the upper ToS range only if the ToS Operator column displays the value IN. The value IN specifies that you have selected 'between' in the Operation field when creating the ToS group. For more information about creating ToS groups, see Add Class of Service Definitions.
   Topology Filters - Set Threshold By	Select one of the following options to select a topology filter for the threshold: Interface: Select this option if you want the threshold to monitor a group of interfaces. On the Flow Enabled Interfaces tab, select the interfaces for the threshold. Node: Select this option if you want the threshold to monitor all the interfaces configured for a selected node. On the Flow Enabled Nodes tab, select the nodes for the threshold. The threshold monitors all interfaces configured for the selected nodes. Site: Select this option if you want the threshold to monitor all the interfaces configured for a selected site. On the Sites tab, select the sites for the threshold. The threshold monitors all interfaces configured for all the nodes in the selected sites.

4. Click Save and Close to save the threshold configuration and close the Threshold Details form.

If you do not select any value in the Application or ToS and Topology Filters section, the configured threshold used by NNM iSPI Performance for Trafficis applied to all applications, ToS, interfaces, nodes, and sites.

Add New Threshold Settings for Sites Using the Traffic Analysis Workspace

You can use the views displayed in the Traffic Analysis workspace to configure thresholds for sites.

To add a new threshold for a site:

1. In the Workspaces navigation pane, select the Traffic Analysis workspace.
2. Select the Traffic Sites view.
3. Right-click a site and select Configure Traffic Threshold to open the Threshold Details form.

4. NNM iSPI Performance for Traffic assigns the new threshold to the interfaces configured for the site that you selected in the view. Specify the following information in the Threshold Details form:

   Field Name	Description
   Metric	Select one of the following metrics for the threshold: Volume: Selecting this metric enables the threshold to monitor the volume of traffic passing through the selected interfaces. Bandwidth: Selecting this metric enables the threshold to monitor the application bandwidth for the selected interfaces.
   High Value	Type a high value for the threshold. If you have selected Volume in the metric field, you can select Bytes, KB, MB, or GB for the threshold. If you have selected Bandwidth in the metric field, you can select bps, Kbps, Mbps, Gbps, or Percent Utilization for the threshold. If the traffic volume or data bandwidth for the interfaces cross this high value, the NNM iSPI Performance for Traffic creates an NNMi incident and updates the status for the node for which the interfaces are configured.
   High Rearm Value	Type a high rearm value for the threshold. The high rearm value specifies the acceptable range of traffic volume or data bandwidth for the selected interfaces. The NNM iSPI Performance for Traffic performs the following tasks after the traffic volume or data bandwidth for the selected interfaces reach the high rearm value: Updates the life-cycle state of the NNMi incident to Closed state Updates the node status
   Application or ToS - Set Threshold By	Select one of the following types for the threshold: Application: Select this option if you want NNM iSPI Performance for Traffic to monitor each application for each of the selected interfaces. If you select Bandwidth as the threshold metric, you can select either Application or All Applications as the threshold type. On the Application Mappings tab, select the application names you want to monitor. Make sure that you select at least one application. All Applications: Select this option if you want NNM iSPI Performance for Traffic to monitor all applications for each of the selected interfaces. If you select Bandwidth as the threshold metric, you can select either Application or All Applications as the threshold type. ToS: Select this option if you want NNM iSPI Performance for Traffic to monitor each class of service for each of the selected interfaces. Make sure that you select this threshold type if you have selected Volume as the threshold metric. On the Type of Service Mappings tab, select the class of service names that you want to monitor. Make sure that you select at least one class of service. All ToS: Select this option if you want NNM iSPI Performance for Traffic to monitor all classes of service for each of the selected interfaces. Make sure that you select this threshold type if you have selected Volume as the threshold metric. None: Select this option if you want NNM iSPI Performance for Traffic to monitor the total volume of traffic passing through each interface in the selected interface group, node, or site. NNM iSPI Performance for Traffic monitors the traffic volume across all applications and classes of services if you select this option. You can select this option only if you have selected Volume as the threshold metric. On the Type of Service Mappings tab, if the ToS Operator column displays the value EQUALS, the ToS Second Number column displays the value -1. The ToS Second Number column displays the upper ToS range only if the ToS Operator column displays the value IN. The value IN specifies that you have selected 'between' in the Operation field when creating the ToS group. For more information about creating ToS groups, see Add Class of Service Definitions.
   Topology Filters - Set Threshold By	NNM iSPI Performance for Traffic automatically selects the option Site when you create the threshold from the Traffic Sites view in the Traffic Analysis workspace. The site that you selected in the Traffic Sites view appears as selected in the Sites tab.

5. Click Save and Close to save the threshold configuration and close the Threshold Details form.

If you do not select any value in the Application or ToS and Topology Filters section, the configured threshold used by NNM iSPI Performance for Trafficapplies to all applications, ToS, interfaces, nodes, and sites.

Add New Threshold Settings for Nodes Using the Traffic Analysis Workspace

You can use the views displayed in the Traffic Analysis workspace to configure thresholds for nodes.

To add a new threshold for a node:

1. In the Workspaces navigation pane, select the Traffic Analysis workspace.
2. Select one of the following views:
   • Traffic Reporting Nodes
   • Threshold Exceptions Reporting Nodes
3. Right-click a node and select Configure Traffic Threshold to open the Threshold Details form.

4. NNM iSPI Performance for Traffic assigns the new threshold to the interfaces configured for the node that you selected in the view. Specify the following information in the Threshold Details form:

   Field Name	Description
   Metric	Select one of the following metrics for the threshold: Volume: Selecting this metric enables the threshold to monitor the volume of traffic passing through the selected interfaces. Bandwidth: Selecting this metric enables the threshold to monitor the application bandwidth for the selected interfaces.
   High Value	Type a high value for the threshold. If you have selected Volume in the metric field, you can select Bytes, KB, MB, or GB for the threshold. If you have selected Bandwidth in the metric field, you can select bps, Kbps, Mbps, Gbps, or Percent Utilization for the threshold. If the traffic volume or data bandwidth for the interfaces cross this high value, the NNM iSPI Performance for Traffic creates an NNMi incident and updates the status for the node for which the interfaces are configured.
   High Rearm Value	Type a high rearm value for the threshold. The high rearm value specifies the acceptable range of traffic volume or data bandwidth for the selected interfaces. The NNM iSPI Performance for Traffic performs the following tasks after the traffic volume or data bandwidth for the selected interfaces reach the high rearm value: Updates the life-cycle state of the NNMi incident to Closed state Updates the node status
   Application or ToS - Set Threshold By	Select one of the following types for the threshold: Application: Select this option if you want NNM iSPI Performance for Traffic to monitor each application for each of the selected interfaces. If you select Bandwidth as the threshold metric, you can select either Application or All Applications as the threshold type. On the Application Mappings tab, select the application names you want to monitor. Make sure that you select at least one application. All Applications: Select this option if you want NNM iSPI Performance for Traffic to monitor all applications for each of the selected interfaces. If you select Bandwidth as the threshold metric, you can select either Application or All Applications as the threshold type. ToS: Select this option if you want NNM iSPI Performance for Traffic to monitor each class of service for each of the selected interfaces. Make sure that you select this threshold type if you have selected Volume as the threshold metric. On the Type of Service Mappings tab, select the class of service names that you want to monitor. Make sure that you select at least one class of service. All ToS: Select this option if you want NNM iSPI Performance for Traffic to monitor all classes of service for each of the selected interfaces. Make sure that you select this threshold type if you have selected Volume as the threshold metric. None: Select this option if you want NNM iSPI Performance for Traffic to monitor the total volume of traffic passing through each interface in the selected interface group, node, or site. NNM iSPI Performance for Traffic monitors the traffic volume across all applications and classes of services if you select this option. You can select this option only if you have selected Volume as the threshold metric. On the Type of Service Mappings tab, if the ToS Operator column displays the value EQUALS, the ToS Second Number column displays the value -1. The ToS Second Number column displays the upper ToS range only if the ToS Operator column displays the value IN. The value IN specifies that you have selected 'between' in the Operation field when creating the ToS group. For more information about creating ToS groups, see Add Class of Service Definitions.
   Topology Filters - Set Threshold By	NNM iSPI Performance for Traffic automatically selects the option Node when you create the threshold from the Traffic Analysis node views. The node that you selected in the Traffic Analysis node view appears as selected in the Flow Enabled Nodes tab.

5. Click Save and Close to save the threshold configuration and close the Threshold Details form.

If you do not select any value in the Application or ToS and Topology Filters section, the configured threshold used by NNM iSPI Performance for Traffic is applied to all applications, ToS, interfaces, nodes, and sites.

Modify Threshold Settings Using the Threshold Details Form

To modify an existing threshold, follow these steps:

1. Launch the Threshold Configuration panel.

2. Select the threshold you want to modify.

   You can select multiple thresholds. The NNM iSPI Performance for Traffic displays each threshold in a separate Threshold Details form.

3. Click Open in Threshold Configuration panel to open the Threshold Details form.

4. You can modify only the following values for an existing threshold:

   Field Name	Description
   High Value	Type a high value for the threshold. If you have selected Volume in the metric field, you can select Bytes, KB, MB, or GB for the threshold. If you have selected Bandwidth in the metric field, you can select bps, Kbps, Mbps, Gbps, or Percent Utilization for the threshold. If the traffic volume or data bandwidth for the interfaces cross this high value, the NNM iSPI Performance for Traffic creates an NNMi incident and updates the status for the node for which the interfaces are configured.
   High Rearm Value	Type a high rearm value for the threshold. The high rearm value specifies the acceptable range of traffic volume or data bandwidth for the selected interfaces. The NNM iSPI Performance for Traffic performs the following tasks after the traffic volume or data bandwidth for the selected interfaces reach the high rearm value: Updates the life-cycle state of the NNMi incident to Closed state Updates the node status

5. Click Save and Close to save the modified threshold configuration and close the Threshold Details form.

Iif you did not select any value in the Topology Filters section when creating the threshold, NNM iSPI Performance for Traffic applies the threshold to all applications, ToS, interfaces, nodes, and sites. In such a scenario, the Threshold Details form does not display any value in the following tabs:

• Sites
• Flow Node/Interface
• Type of service Mappings
• Application Mappings

Delete Threshold Settings Using the Threshold Details Form

To delete an existing threshold, follow these steps:

1. Launch the Threshold Configuration panel.

2. Select the threshold you want to delete.

   You can select multiple thresholds for deletion.

3. Click Deletein Threshold Configuration panel.

The NNM iSPI Performance for Traffic performs the following tasks when you delete a threshold:

• Rearms all the related incidents in the Exceeded state. Rearming the incidents sets the incident state to Normal state.
• Sets the node state to Normal state if all the incidents belonging to the node are set to the Normal state.