Question

Engineer feedback OSN3500 equipment new expansion SSN2PQ1, SSN4SLQ16 single board anomaly, after the expansion of the master reported BD-VER-NMAT (single board version mismatch ) alarm, the host version: 5.21.18.12, the new expansion of N1SLQ16 single board version 7.54, SSN2PQ1 single board version 6.53.

Alarm

BD-VER-NMAT (single board version mismatch ) alarm.

Processing

1, BD-VER-NMAT (single board version mismatch ) alarm meaning: when the single board version does not match the host settings or version of the single board version mismatch alarm reported, check the 18.12 version matching table, found that the N2PQ1 single board matching version is 5.30, SSN4SLQ16 single board matching version is 6.11, the preliminary judgment is that the single board software is too high;

2、Contact engineers to use the command cfg-get-bdinfo query the BOM code of the single board, confirming that the expansion of the N1SLQ16 single board ( BOM 03052552 ) and the N2PQ1 single board ( BOM 03030KQL ) are B2 series single boards, and can not be downgraded for supporting;

3, the engineer is recommended to upgrade the host software to 5.21.18.50. At the same time, the B2 series is a vertically switched single board, which can be used to replace the original single board vertically in any version, and the current network can directly shield the BD-VER-NMAT alarm.

Root cause

The version of B2 series single board does not match with 5.21.18.12 host, and B2 series single board does not support downgrade, so BD-VER-NMAT (single board version mismatch ) alarm is reported.

Recommendations and Summary

After discovering that the veneer version does not match the host, don't downgrade immediately, you need to consider more about the multi-board ID, B2 series veneer problem, to avoid downgrading when the veneer can't start.