Managing Severity and Thresholds

Configuring Severity and Thresholds allows you to be notified when the value of a monitored OID exceeds a set level. These levels are set in the Manage Severity dialog and are then used to define your alerts by assigning a level of severity to each threshold, set in the Manage Threshold dialog.

The Severities and Thresholds are now linked to the Granular Events Management (GEM) framework. This allows you to configure severities and thresholds from the Net Monitor tab, or navigate to the Console > Events screen to configure and verify changes there.

This section contains the following subsections:

•	Managing Severity

•	Managing Thresholds

•	Viewing Threshold Alerts in the Dashboard

•	Managing SNMP Scheduled Reports

•	Setting E-mail Threshold Alerts

Managing Severity

To configure your Severity settings:

1	In the menu bar, select Tools > Manage Severity.

 

 

2	Add a new severity by clicking and entering a name for the severity.

3	Move the new severity to a different priority level by having the severity selected in the list and using and .

4	Change the color of the severity by having the severity selected in the list and clicking .

5	To delete a severity, have the severity selected in the list, and click .

NOTE: A severity cannot be deleted if it is being used by one or more threshold elements. Ensure all corresponding threshold elements are not associated with that severity before attempting to delete. Severities are global settings and is available to use across the system.

Managing Thresholds

Every element in a threshold is assigned an operator, value, and severity. Thresholds are ways of defining conditions that monitor specified object identifier (OID) values. When the defined condition is met, the threshold is triggered, and severity helps to identify the priority of the triggered threshold. To configure your thresholds:

1	In the menu bar, select Tools > Manage Thresholds.

 

 

2	Click under Threshold and enter a friendly name to add a new threshold.

3	Click under Elements to add a new element to the threshold.

4	Configure the Operator, Value, and Severity fields in the new element as follows:

 

Table 67. Configuring the Operator, Value, and Severity fields

Operator	Double-click and choose an operator as a modifier for your value. For numeric values, operator options include ==, !=, >, >=, <, =<. For alpha numeric values, operator options include equals, equals ignore case, not equals, contains, not contains.
Value	Double-click and enter an alpha or numeric value. Numeric values are entered in bytes.
Severity	Double-click and choose a severity from the list to correspond with the operator and value.

You might also disable a specific threshold by selecting Disabled. The following threshold triggers a Low-level Warning at a value of less than 100000 bytes.

 

5	Click Apply to save your changes.

NOTE: Thresholds are global settings and is available to use across the system.

To delete a Threshold, select the threshold and click .

Viewing Threshold Alerts in the Dashboard

The Dashboard View is a screen where an alert about an SNMP Realtime Monitor satisfying user-defined threshold conditions are displayed. When a threshold alert is triggered, information about the device, realtime monitor, and the element that triggered the alert is shown on this screen.

Managing SNMP Scheduled Reports

You can schedule reports from realtime monitors to be sent by email or archived to a location on disk. To create a scheduled report, navigate to the Dashboard> Universal Scheduled Reports screen:

For more information regarding managing SNMP Schedule Reports, refer to Using the Universal Scheduled Reports Application .

Setting E-mail Threshold Alerts

GMS NetMonitor, now at a granular per device level, allows users to configure multiple destinations based on schedules. Alerts for that unit are then sent to the specified destinations based on the specified schedules. Alert settings now supports adding a maximum of five destinations for specified devices.

To set email threshold alerts:

1	Select the device(s) you wish to configure alerts for from the GMS NetMonitor main status screen by clicking (ctrl-click for multiple devices).

2	In the menu bar, select Tools > Alert Settings.

 

3	Click Add Destination to add a new destination. You are able to add a maximum of five destinations/schedules.

4	Select the destination from the pull-down menu.

 

 

5	Next, choose the Schedule you want applied to this destination.

 

 

6	Select whether you want these settings applied to just the Selected Device or All Accessible Devices. Note that selecting the latter option will overwrite any existing settings for the affected devices.

 

7	Click Apply to complete adding alerts. A warning could display notifying you that the Alert Settings is reset to the newly specified settings. Click Yes to continue.

Accessing the Legend

To see all icon definitions used in the NetMonitor section, navigate to the Help > Legend screen:

Monitoring Devices Behind a SonicWALL Appliance

To monitor devices behind a SonicWALL appliance, do one of the following:

•	Create a VPN tunnel to the remote firewall that makes all LAN subnets accessible to the Net Monitor.

•	Create NAT Policies that allow specific types of traffic through. For example, if TCP Probe is chosen as the monitor type, TCP connections must be allowed to the specified port. If Ping is chosen as the monitor type, ICMP must be allowed.