Huawei OSN1500 devices are in the NE_IS_BUSY state because the SDH transmission equipment has to carry out data backup and software version matching for about 5 minutes between the master and backup masters after successful BOIS and FPGA boot-up during power-on startup, and then do the data backup in the case of consistent matching of the software version , which takes up a large amount of the equipment's CPU resources. However, due to some reasons, the backup may fail, but the device can not exit the backup task, the device hangs in the backup process, causing the device to enter the NE_IS_BUSY state.

Problem description

The OSN1500 has been in the NE_IS_BUSY state for up to 1 hour, and any command entered from the command line returns to the NE_IS_BUSY state.

Commands do not return normal values.

Alarm message

None

Processing

1. Soft reset the master board to reactivate the backup.

2、The host backup is successful and the status of the network element is normal.

Failurecauses

Data backup between the master and backup host requires a large amount of CPU resources, but due to the existence of some reasons, the backup may fail, but you can not exit the task.

Therefore it enters the NE_IS_BUSY state. To release this deadlock state, it is only necessary to restart the backup once. That is, soft reset the main control board, restart the backup, and after the backup is successful, the host enters the normal state.

Suggestions and Summary

The probability of this situation is very low when the software of the main and backup master control is consistent and there is no abnormality. Reset the master control after it occurs to recover.

The related technical information in this chapter and the troubleshooting process of SDH equipment are provided by Shenzhen Optical Transmission Network Technology Company Limited ( www.opticaltrans.com), please retain! Huawei SDH Optical Transmission Equipment,SDH Transmission Equipment Sales