Setting CFM Alarm Parameters

This section describes how to set connectivity fault management (CFM) alarm parameters, which include the alarm generation and clearing anti-jitter times.

Context

You can set CFM alarm parameters so that CFM sends link fault alarms to a network management system (NMS). A network administrator can take measures based on the alarm information displayed on the NMS.

Table 1 describes CFM alarm parameters.

**Table 1** CFM alarm parameters
Parameter	Description
Alarm generation anti-jitter time	When a maintenance association end point (MEP) detects a link fault: It sends an alarm to an NMS after a specified alarm generation anti-jitter time elapses. It does not send an alarm if the fault is rectified within a specified alarm generation anti-jitter time.
Alarm clearing anti-jitter time	When a MEP detects a link fault and sends an alarm: It sends a clear alarm if the fault is rectified within a specified alarm clearing anti-jitter time. It does not send a clear alarm if the fault is not rectified within a specified alarm clearing anti-jitter time.

Pre-configuration Tasks

Before setting CFM alarm parameters, run the ma ma-name command to create a maintenance association (MA).

Procedure

Configure an alarm generation anti-jitter time.
1. Run system-view
  The system view is displayed.
2. Run cfm md md-name
  The maintenance domain (MD) view is displayed.
3. Run ma ma-name
  The MA view is displayed.
4. Run alarm occur time time
  An alarm generation anti-jitter time is configured.
5. Run commit
  The configuration is committed.
Configure an alarm clearing anti-jitter time.
1. Run system-view
  The system view is displayed.
2. Run cfm md md-name
  The MD view is displayed.
3. Run ma ma-name
  The MA view is displayed.
4. Run alarm finish time time
  An alarm clearing anti-jitter time is configured.
5. Run commit
  The configuration is committed.