20120 Broadcast packet overflow alarm

Description

Broadcast storm

Attribute

Alarm ID Alarm Severity Alarm Type
20120 Major Fault

Parameters

ID Name Meaning
1 Subrack No.

Subrack No.

2 Slot No.

Slot No.

3 Cpu No.

CPU No.

4 GE link No.

Number of the faulty GE Link

5 The Slot No. of transaction board corresponding this link

Number of the slot on the backplane mapping to the faulty link; if the faulty port is a panel port, the Slot No. is 255.

6 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 loop occurs on the existing switching network.

System Actions

None

Possible Causes

There is a broadcast storm.

Procedure

  1. Check whether the cables connections are in accord with the specifications.

    Y => The connections are in accord with the specifications. Please contact Huawei Customer Service Center.

    N => The connections are not in accord with the specifications. Please connect the cables according to the specifications. The alarm handling is complete.


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