The ECC communication of the OptiX OSN 2500 REG is unavailable due to incorrect board configuration. This problem is solved by installing the relevant boards in paired slots.
Symptom
Two SL16 boards are installed in slots 7 and 8 on the OptiX OSN 2500 REG. After the boards are connected to the upstream NE and downstream NE through fibers, the ECC communication of the OptiX OSN 2500 REG is unavailable.
Cause Analysis
The possible causes are as follows:
- Fibers are misconnected.
- The board software is faulty or the NE software is faulty.
- Board configuration is incorrect.
Procedure
- Check the fiber connections and confirm that the fiber connections are correct.
- Check the alarms on the NE and find no abnormal alarms. The board software and the NE software are normal.
- The OptiX OSN 2500 REG has special requirements for fiber connections. The ECC communication in a certain direction must be achieved through the IN port on one optical interface board and the OUT port on another optical interface. After the ECC messages are received by an optical interface of a line board on the OptiX OSN equipment, the ECC messages are sent to the SCC board and the board in the paired slot. Therefore, only the line boards in paired slots can receive the ECC messages in one direction. Slots 8 and 11, slots 7 and 12 are paired slots. The ECC communication is unavailable on the OptiX OSN 2500 REG because the SL16 boards are not installed in paired slots.
- Reinstall the SL16 board in slot 8 into slot 12. Then, the ECC communication of the OptiX OSN 2500 REG is available.
Related Information
On the OptiX OSN 2500 REG, one pair of IN and OUT optical interfaces must be connected to the west and the east respectively. This connection method is similar to the REG board on the WDM equipment. Fibers can be misconnected easily on site.
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