Description of the problem

A site has newly expanded several Huawei OSN3500 devices N1EMS4 single boards, and several of the EMS4 single boards report that the single boards are in the low-power alarm. From the data, the physical power consumption of the single boards exists, but the host has not been able to assign the logical power consumption to the single boards. Host version 19.22

Processing

1. After replacing the N1EMS4 single board, the fault phenomenon is still the same;

2, the network element is a lot of single board are not assigned to power consumption, so the slot problem is basically excluded;

3, query the version supporting table, the host version also supports the single board;

4, by comparing other single boards that can be assigned to power consumption, found that the single board version of these assigned to power consumption and the host version is not matching;

5, after downgrading the single board version, the fault is solved.

Root Cause

The single board version is mismatched with the host version.

Solution

Upgrade the single board version to the version that matches the host computer.

Recommendations and Summary

The version of NG products is required to be mandatory matching, but there are also mismatched versions in use on the network, so when dealing with some strange faults, it is recommended to check the version matching situation first.

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