Alert Profiles Management

    An alert profile is created to set the thresholds for generating alerts. The parameters to be set for creating an alert profile are:

    1. Real-time alerts

    • Source(Interfaces/ IP Groups / Interface Groups / Access Points / SSID Groups) - The list of interfaces / IP Groups / Interface Group / Access Points / SSID Groups whose bandwidth utilization must be watched.
    • Traffic pattern - The traffic to be watched - In Traffic, Out Traffic or a Combination of both.
    • Threshold Settings - It has 3 settings namely % utilization, no. of times, and duration.
      • % Utilization/Volume/Speed/Packets - When the utilization exceeds this limit, it is noted 
      • No. of time - The number of times the utilization can be allowed to exceed the threshold before an alert is raised 
      • Duration - The time period within which, if the threshold is exceeded the specified number of times - an alert is created(generated)

    2. Aggregated alerts

    • Source(Interfaces/ IP Groups / Interface Groups / Access Points / SSID Groups) - The list of interfaces / IP Groups / Interface Group / Access Points / SSID Groups whose bandwidth utilization must be watched.
    • Time period
      • Custom - To carry out bandwidth usage monitoring between provided start and end time.
      • Periodic - Monitors bandwidth usage at mentioned intervals from the given start time.
    • Threshold Settings - It has 3 settings namely traffic pattern to be monitored(In Traffic, Out Traffic or a Combination of both), Volume/Packets, and number of bytes/packets.

    Netflow Analyzer calculates the bandwidth utilization of the specified interfaces/ IP Groups / Interface Group every minute. If the utilization exceeds the threshold value, the time when it exceeded is noted. Subsequently when it exceeds, the corresponding times are noted. If the number of times the utilization exceeds the specified limit, in the specified time duration, an alert is generated. When an alert is generated, you can also send an email to one / more people or send an SNMP trap to a manager application.

    The Alert Profile Management option lets you create and manage alert profiles. The Alert Profiles page lists all existing alert profiles, along with the number of alerts generated for each profile. The application comes loaded with a preconfigured alert that can trigger an email alert when a link goes down or when there are no flows for more than 5 minutes.

    The various columns displayed in the Alert Profiles page are described in the table below:

    Column Description
    Profile Name The name of the alert profile when it was created. Click on the alert profile's name to see more information about the alert profile.
    Description

    Descriptive information entered for this alert profile to help other operators understand why it was created.

    Category

    The category defines, to what type of alert an alert profile belongs to. The pre-loaded and pre-configured "Link Down" alert belongs to the "Link Status" category. All other alerts created by the user fall under the "Utilization"category.

    Status (Enabled/Disabled) This lists whether an alert profile is currently enabled or disabled. Click the alert icon to disable an alert profile. When this is done, alerts will no longer be generated for that alert profile. Click theDisabled alert icon to enable the alert. The Link Status alert becomes enabled only after the mail server settings have been set.
    Actions Actions allows to make changes to the existing Alert Profile with options like Edit, Copy and Delete. The option helps editing an Alert Profile from name and description to criteria and filters. One can also duplicate an Alert Profile with Copy or using Delete, they can remove all the alerts created for the profile altogether.
    Search Allows to find a particular Alert Profile from the list by entering either Profile Name, Description or Category.

    Alerts List of the Alarms page will display the alert profiles created, based on its severity, device, and time.

    Link Down Alert

    This is a preconfigured alert to send an email or log an SDP ticket when the link goes down or when there are no flows for more than 5 minutes. By default this profile is disabled. This is similar to other alerts that are manually configured except that it can't be deleted. It is possible to have emails sent by this alert whenever no flows are received for over 5 minutes. It becomes activated only after the mail server settings are configured. You can also create a custom notification template to get alerts every time the link goes down or no flows are received for a time period of 3 minutes to 30 minutes.

    Wireless Network Controller Monitoring - ManageEngine NetFlow Analyzer  

    Operations on Alert Profiles

    You can create new alert profiles, modify, or delete existing ones from the Alert Profiles page.

    Creating a new Alert Profile

    Important Remember to set the active timeout value on the router to 1 minute so that alerts are generated correctly. Refer the section for more information on router settings.

    The steps to create an Alert Profile are:

    1. Login to the NetFlow Analyzer client and click "Alert Profile Management" under "Admin Operations" in the left panel 
    2. Select the Alert Profile type as Real-Time or Aggregated.
    3. Click "Add" to add a new Alert Profile 
    4. Fill in the following details
      Field Description
      Alert Profile Name Enter a unique name to identify this alert profile
      Description

      Enter descriptive information for this alert profile to help other operators understand why it was created.

      Select Source By default all Interfaces / IP Groups/ Interface Group sending NetFlow exports are selected. If you want this alert profile to apply to certain interfaces/ ip groups / Interface Groups only, click the Modify Selection link. In the pop-up window, select the required devices and interfaces or select the IP Group Names and click Update to save your changes.
      Define Alert Criteria Select whether alerts need to be generated based on incoming traffic, outgoing traffic, or both. The default setting is for both(combined).
      Then select the application / port for which the alert has to be generated. This criteria can be very general - Any application traffic can be profiled - or it can be highly specific - Generate the alert only when a specific application, protocol, and/or port is used. To identify the overall link utilization the "No Criteria" option has to be chosen
      Define Threshold and Action Enter the threshold conditions (threshold utilization, no. of times it can exceed and the time duration) exceeding which the alert will be generated. You can also specify an action to be taken during the alert creation.

        -  Email  - to send a notification to one or more people.

        -  SNMP Trap - to send a trap to the manager application (specify the <server name>:<port>:<community>). For details on configuring trap forwarding, refer to SNMP Trap Forwarding section under Appendix

      To add more threshold values, click 'Add Row' and add values 

      Business Hour Alerts This option enables alerting only during the configured time range of a day. Alerts will not  be generated outside this time range.

      You can configure the way you want to receive alerts by creating a notification template that suits your preference.

    5. After setting the required thresholds, click 'Save

    The new alert profile is created and activated. The system watches the utilization and raises alarms when the specified conditions are met. 

    Real-time alert

    Only one alert is generated for a specified time duration. For example, say for a particular interface, the threshold is set as 60% and number of times is set as 3 times and the time duration is set as 30 minutes. Now lets assume that the utilization in that interface goes above 60% and stays above it. Then in 3 minutes, the above conditions will be met and an alert will be generated. The next alert will NOT be generated after 6 minutes, but only in the 33rd minute, if the condition persists. Thus for the specified 30 minutes time duration, only one alarm is generated. This is designed to avoid a lot of repetitive mail traffic.

    Aggregated alert

    An aggregated alert is generated based on a defined time frame and threshold. Say if you select an interface, and you want to get an alert when the OUT traffic crosses 80 GB volume within a time frame of your choice, like custom or periodic.

    When and if you choose custom time period, you get an alert if the volume crosses 80 GB within provided start and end time. On the contrary, if you select periodic time period, and specify the interval as 10 days, the traffic will be monitored every 10 days. You will get an aggregated alert for every time interval.

    Modifying or Deleting Alert Profiles

    Select an alert profile, and click on Modify to modify its settings. You can change all of the alert profile's settings except the profile name. However, it is possible to modify the "Link Down" alert profile's name. There is also an option to clear details of all alerts created for this profile from this page itself. Once you are done, click Save to save your changes.

    Select an alert profile, and click on Delete to delete the profile. Once an alert profile is deleted, all alerts associated with that profile are automatically cleared. However it is not possible to delete the "Link Down" alert profile.