Configuring Transmission Alarm Filtering Intervals

This section describes the usage scenario of transmission alarm filtering intervals, and the pre-configuration tasks and operation procedure for configuring the transmission alarm filtering intervals. If the lifetime (interval between alarm generation and alarm clearance) of an alarm is less than the generation alarm filtering interval, the alarm is filtered out as a burr. Otherwise, the alarm is considered as a normal alarm.

Usage Scenario

In the scenario where a router is connected to a transmission device, if the network is unstable, a large number of burr alarms may be generated. As a result, the physical status of interfaces will frequently change between up and down. If a transmission alarm filtering interval is configured, the alarms whose lifetime is shorter than the interval will be ignored.

Transmission alarm filtering intervals can be configured globally or on an interface. The global configuration takes effect on interfaces supporting the function. The relationship is as follows:

If a transmission alarm filtering interval is configured globally and a non-default transmission alarm filtering interval is configured on an interface, the configuration on the interface preferentially takes effect.
If no transmission alarm filtering interval is configured in the interface view, the global configuration takes effect.

In VS mode, global transmission alarm filtering intervals are supported only by the admin VS.

Pre-configuration Tasks

Before configuring transmission alarm filtering intervals, complete the following tasks:

Power on the NetEngine 8000 F and ensure that the NetEngine 8000 F passes the self-check.
Configuring Transmission Alarm Customization on the router's interface connected to the transmission device.

The alarm filtering function on an interface takes effect only after transmission alarm customization is configured on the interface.

Procedure

Enable the global alarm filtering function and set global generation and clearance alarm filtering intervals.
1. Run system-view
  The system view is displayed.
2. Run transmission-alarm holdoff-timer holdoff-time
  Generation alarm filtering is enabled globally, and an interval for filtering generation alarms is configured globally.
3. Run transmission-alarm holdup-timer holdup-time
  Clearance alarm filtering is enabled globally, and an interval for filtering clearance alarms is configured globally.
4. Run commit
  The configuration is committed.

Verifying the Configuration

After configuring transmission alarm filtering intervals, verify the configuration.