OSN3500 SNCP subnet connection protection, which is based on dual transmitter-selective receiver protection, requires a working subnet and a protection subnet. When the working subnet connection fails or the performance is inferior to a certain degree, the working subnet connection will be replaced by the protection subnet connection.SNCP subnet connection protection, with one working subnet and one protection subnet, improves the reliability of the service by replacing the working subnet when the working subnet connection fails or the performance is inferior to a certain degree.The SNCP service pair is the basic unit of SNCP, which consists of a working source, a protection source, and a service host. The working source and the protection source can be any of the line types of fiber optic lines, STM-1e cables, and both can be different line types. The service host can be any type of line or branch. As shown in the figure below:

Problem Description

OSN3500 deletes a single board and reports an error, prompting that the single board is occupied by the protection group, error code 1090593932.

Processing

1, in accordance with common causes, confirm the deletion of the network layer to protect the subnet; there is no business; has been deleted from the logical fiber.

2, delete the board again, or error, prompting the board is occupied by the protection group, error code 1090593932.

3, query the single-station network manager, OSN3500 does not exist SNCP protection subnet menu items.

4, in the SDH isolated node management, to find the previous protection subnet of this network element. (SDH isolated node can be understood as: in a single station to create a protection but did not form a protection subnet)

5, click delete, and then delete the board successfully.

Reason

Network-side data is left behind, causing the board to be occupied by the protection group.

Solution

Find and delete the protection group in the SDH isolated node. You can also delete the multiplexed segment ring protection group cfg-del-rmspg with the command.

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