21585 APS K2 Mismatch Alarm

Description

This alarm is reported when the protection modes at two ends of the APS protection section are different.

Attribute

Alarm ID	Alarm Severity	Alarm Type
21585	Major	Fault

Parameters

ID	Name	Meaning
1	Subrack No.	Number of the subrack where the alarm is generated
2	Slot No.	Number of the slot where the alarm is generated
3	Sub Slot No.	Number of the sub slot where the alarm is generated
4	Optical Port No.	Number of the optical port where the alarm is generated
5	Alarm Attribute	0=Normal, Alarms period are longer than the Transient Threshold. 1=Transient Count, The times and the period of the alarms whose periods are shorter than the Transient Threshold are summed up. If the sum result is longer than the Alarm Occurrence Period Threshold or Alarm Occurrence Times Threshold, an alarm so called Transient Count Alarm is triggered. Because Transient Count Alarm is based on accumulative result, the recovery of the alarm may occur at least one Summing Cycle later. The Summing Cycle can be query by MML "LST STATSLDWIN".

Impact on the System

The traffic carried by the optical port may be disrupted.

System Actions

None.

Possible Causes

The protection modes at two ends of the APS protection section are different: one end is 1:1 protection mode and the other end is 1+1 protection mode.

Procedure

Check whether the protection modes at two ends of the APS protection section are the same.
Y => Contact Huawei Customer Service Center.

N => Configure the APS protection mode at two ends to be the same. Interconnect the two ends, and then Go to 2.
Check whether this alarm is cleared.
Y => The alarm handling is complete.

N => Contact Huawei Customer Service Center.