Problem description

A project expands a N1EMS4 electrical port single board in a set of OSN1500 equipment, OSN 1500 equipment version V1R7C02B017SPH001, EMS4 single board version matching. The supervisor will configure the EMS4 single-board service and set the port mode to 1000M full-duplex at the same time, and the service test is normal. One day, the OSN 1500 device EMS4 single board docking equipment power down, while the N1EMS4 single board did not report any alarms.

Alarm information

No alarms are reported on the device.

Processing

1, suspect single board failure, use the same version of the same project configuration of the EMS4 optical single board can normally report ETH_LOS, at the same time, the two optical, electrical interface module swap, in the original GE electrical module EMS4 single board using GE optical module , the single board can normally report ETH_LOS alarms, to rule out single board failure.

2、Consult the R&D, V1R7C02B017SPH001OSN 1500/3500/7500 and other equipment of the EMS4 electrical single board does not support ETH_LOS alarm, need to be upgraded to V1R9C04 or above to support.

3. Upgrade to version V1R9C04, disconnect the network cable, the device can report ETH_LOS alarm normally.

Root Cause

The EMS4 electrical port veneer board of OSN 1500/3500/7500 and other devices of V1R7C02B017SPH001 does not support ETH_LOS alarm, and needs to be upgraded to V1R9C04 or above to support it.

Recommendation and Summary

The EMS4 electrical port veneer boards of devices such as OSN 1500/3500/7500 of V1R7C02B017SPH001 do not support ETH_LOS alarms, but can normally support EMS4 optical port veneer boards that can normally support ETH_LOS alarms.