# Alarm Suppression

OpManager provides you the option to suppress the alarms of the devices for a pre-defined time interval. This option will be useful in cases where the devices are under maintenance or some known issues exist with them.

- [Group Alarm Suppression](https://www.manageengine.com/network-monitoring/help/suppress-alarms.html#group-alarm-suppression)
- [Category Alarm Suppression](https://www.manageengine.com/network-monitoring/help/suppress-alarms.html#category-alarm-suppression)
- [Device Alarm Suppression](https://www.manageengine.com/network-monitoring/help/suppress-alarms.html#device-alarm-suppression)
- [Interface Alarm Suppression](https://www.manageengine.com/network-monitoring/help/suppress-alarms.html#interface-alarm-suppression)
- [Monitor Alarm Suppression](https://www.manageengine.com/network-monitoring/help/suppress-alarms.html#monitor-alarm-suppression)
- [Configuration Methods for Alarm Suppression](https://www.manageengine.com/network-monitoring/help/suppress-alarms.html#config-methods)
  - [Quick Configuration Wizard (QCW)](https://www.manageengine.com/network-monitoring/help/suppress-alarms.html#qcw)
  - [Workflow](https://www.manageengine.com/network-monitoring/help/suppress-alarms.html#workflow)
  - [Device Downtime Schedules](https://www.manageengine.com/network-monitoring/help/suppress-alarms.html#downtime)
  - [Discovery Rule Engine](https://www.manageengine.com/network-monitoring/help/suppress-alarms.html#discovery)

## Group alarm suppression

Group alarm suppression allows you to suppress alarms for all devices within a specific group. This is useful when you want to avoid receiving alarms during maintenance or while performing updates on an entire group of devices. Refer to the [Configuration methods for Alarm suppression](https://www.manageengine.com/network-monitoring/help/suppress-alarms.html#config-methods) section for detailed steps.

## Category Alarm Suppression

Category alarm suppression lets you suppress alarms for devices belonging to a specific category, such as WLAN devices, UCS servers, or printers. This feature is beneficial when certain categories of devices require maintenance or upgrades. Refer to [this section](https://www.manageengine.com/network-monitoring/help/suppress-alarms.html#config-methods) for detailed steps.

## Device alarm suppression

### Inventory

- Navigate to **Inventory → Devices**.
- Select a device, click the three-dot icon on the top right, and choose **Suppress Alarm**.
- Set the required suppression duration.
- The suppression icon appears in the **Suppressed** column for the respective device.
- In the same suppression window, users can view the configured suppressions.
- Delete individual entries or use **Delete All** to remove all suppressions for that device.

### Device snapshot page

- Open the device’s snapshot page.
- Click the menu icon on the top right and select **Suppress Alarm**.
- Choose the suppression period.
- The suppression icon is displayed near the device status, within the Recent Alarms tab, and on the Alarms icon.
- From the suppression details on the snapshot page, users can delete individual suppressions or select **Delete All**.

![Alarm Suppression in OpManager: Device suppression](https://www.manageengine.com/network-monitoring/help/images/alarm-suppression-1.png)

**Note:**

- When a device has multiple alarm suppressions configured, i.e., via categories and groups, using the Delete All option from the Suppression window will only delete device-specific alarm suppressions. Category or group-based suppressions will remain unaffected. To delete category or group-based suppressions, use the Quick Configuration Wizard (QCW).
- Similarly, when multiple suppressions are configured for a device, the longer suppression will automatically take effect. For example, if suppressions are set for 8 hours and 1 day, the 1-day suppression will be applied automatically.

## Interface alarm suppression

### Inventory

- Navigate to **Inventory → Interfaces**.
- Select an interface, click the three-dot icon on the top right, and choose **Suppress Alarm**.
- Set the suppression duration.
- The suppression icon appears near the interface name in the interface list.
- In the same suppression window, users can view and delete individual suppressions or select **Delete All** for that interface.

### Interface snapshot page

- Open the interface’s snapshot page.
- Click the menu icon and select **Suppress Alarm**.
- Define the suppression period.
- The suppression icon is displayed near the interface summary.
- From the suppression details, users can delete individual entries or choose **Delete All**.

## Monitor alarm suppression

### Device Snapshot Page (Monitors Tab)

- Open the device snapshot and navigate to the **Monitors** tab.
- Select one or more monitors, then click the menu icon and choose **Suppress Alarm**.
- Set the required suppression duration.
- The suppression icon appears next to the monitor name in the Monitors tab and is also visible in both graph and forecast views.
- From the suppression details in the Monitors tab, users have the ability to delete individual suppressions or select **Delete All**.

## Configuration methods for alarm suppression

Users can apply filters to narrow down the devices for which alarm suppression is applied. There are four available filter options:

- **Devices:** Discovered devices can be further refined based on Business View, Groups, or Virtual Servers. Additionally, devices can be filtered by their category.
- **Category:** The category of the device (e.g., WLAN, UCS, Printer, etc.).
- **Group:** The groups created in OpManager.
- **Global URL:** The monitored URLs in OpManager. To view the list of monitored Global URLs, navigate to **Settings → Monitoring → URL Monitors**.

### Quick Configuration Wizard (QCW)

- Open QCW and select **Configure**.
- Choose the appropriate filter type—Category, Group, or URL—depending on the suppression you wish to apply.
- Apply the required suppression settings.
- Use the **Remove** option in QCW to clear all suppressions applied for the chosen filter type.

![Alarm Suppression in OpManager: Quick Configuration Wizard](https://www.manageengine.com/network-monitoring/help/images/alarm-suppression-2.png)

### Workflow

- Navigate to **Workflow → New Workflow**.
- Drag and drop the **Suppress Alarm** action from the OpManager dropdown.
- Select the appropriate suppression type (such as Group, if applying to groups) and follow the configuration steps to set up the suppression.
- Users can remove the configured suppressions by setting the suppression time period to **Never** within the workflow configuration.

![Alarm Suppression in OpManager: Workflow](https://www.manageengine.com/network-monitoring/help/images/alarm-suppression-3.png)

### Device downtime schedules

#### Configuration:

- Navigate to **Settings → Configuration → Device Downtime Schedules**.
- Select **Suppress Alarm**, set the frequency, and use the filter to select the required categories, devices, groups, URLs, and monitors.
- Click **Save**.
- Go to the **Device Downtime Schedules** page and click the delete icon to remove the alarm suppression.

![Alarm Suppression in OpManager: Device downtime schedules](https://www.manageengine.com/network-monitoring/help/images/alarm-suppression-20.png)

**Note:**

- Alarms suppressed via Device Downtime Schedules will not be listed in the Alarm Suppression window. These suppressed alarms can only be viewed on the Device Downtime Scheduler List page.

### Discovery Rule Engine

Users can now configure alarm suppression for devices and monitors through [Discovery Rule Engine](https://www.manageengine.com/network-monitoring/help/configuring-discovery-rule-engine.html).

**NOTE :** A new Alarm Suppression page is now available at Settings → Configuration → Alarm Suppression. This page allows Full Access Admin Users to view all configured suppressions.

### Supported monitors list for Alarm Suppression

Given below are the list of monitors for which Alarm suppression is supported:

- Performance Monitors
- URL Monitors
- Service Monitors
- Process Monitors
- MSSQL Service Monitors
- AD Service Monitors
- Exchange Service Monitors
- MSSQL Monitors
- AD Monitors
- Exchange Monitors
- Windows Service Monitors
- File Monitors
- Folder Monitors
- EventLog Monitors
- Script Monitors
- Syslog
- SNMP Traps