ETH_HI_BER

ETH_HI_BER

Description

The ETH_HI_BER is an alarm indicating that the number of 40GE/100GE signal bit errors exceeds the preset threshold. This alarm is generated when the number of 40GE/100GE signal bit errors exceeds the preset threshold.

Attribute

Alarm Severity

Alarm Type

Major

Equipment alarm

Parameters

None

Impact on the System

The alarm has an influence on the QoS of the service signals.

Possible Causes

·    The attenuation of the received signals is excessively large and the fiber of the transmission line is abnormal.

·    The transmit part of the opposite site is faulty.

·    The receive part of the local site is faulty.

Procedure

1.     Check whether the receive optical power of the port is within the permitted range on the U2000. For the optical power specifications of the specific board, see "Technical Specifications" in the Product Description. If the receive optical power of the board at the local site is excessively low, clear the alarm according to the handling procedure of the IN_PWR_LOW alarm.

2.     If the alarm persists, check whether the transmit optical power of the corresponding port on the upstream board is within the permitted range on the U2000. For the optical power specifications of the specific board, see "Technical Specifications" in the Product Description. If the transmit optical power of the board at the upstream site is excessively low, clear the alarm according to the handling procedure of the OUT_PWR_LOW alarm.

3.     If the alarm persists, check whether the bit error alarm (for example, ETH_HI_BER or ETH_BIP8_SD) exists at the upstream site on the U2000. If the bit errors exist, clear the bit error fault of the upstream site.

4.     If the alarm persists, replace the faulty board at the local site.